CN106808662A - A kind of lithium battery is packed for the preparation method of aluminum plastic film - Google Patents
A kind of lithium battery is packed for the preparation method of aluminum plastic film Download PDFInfo
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- CN106808662A CN106808662A CN201710103185.2A CN201710103185A CN106808662A CN 106808662 A CN106808662 A CN 106808662A CN 201710103185 A CN201710103185 A CN 201710103185A CN 106808662 A CN106808662 A CN 106808662A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/27—Cleaning; Purging; Avoiding contamination
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses the preparation method that a kind of lithium battery is packed for aluminum plastic film, comprise the following steps：(1) cladding material and the first binding material are added separately in two layers of A screw rods and B screw rods of co-extruded sheet unit, while melting coextrusion casting to aluminium foil side film forming in screw extruder；(2) inner layer material and the second binding material are added separately in two layers of A screw rods and B screw rods of co-extruded sheet unit, while melting coextrusion casting to the opposite side film forming of aluminium foil in screw extruder；Can obtain lithium battery pack dress aluminum plastic film.Cladding material or inner layer material are melted coextrusion casting to aluminium foil surface film forming by the present invention by the way of screw extruder melting coextrusion casting；In the cladding material of molten condition（Or inner layer material）Can be interpenetrated in interlayer with binding material, being cast to when aluminium foil surface is laminated whne it can make the combination of interlayer more firm, further improve the bond strength of interlayer.
Description
Technical field
The present invention relates to the preparation method that a kind of lithium battery is packed for aluminum plastic film, it is related to lithium battery to be packed for plastic-aluminum membrane technology
Field.
Background technology
In recent years, with the development of polymer Li-ion battery technology, plastic-aluminum packaging film（Also known as aluminum plastic film）Application
More and more extensively, original steel construction packaging material are replaced using plastic-aluminum packaging film, can be effectively prevented because inside battery is violent
The HTHP that produces of chemical reaction and the explosion accident that causes, improve the security of lithium ion battery.
At present, the lithium battery in domestic and international market is packed for the ridge that aluminum plastic film is formd production and technology by Japanese firm
It is disconnected, the development work in terms of the country also has many enterprises to proceed by aluminum plastic film in recent years, though just effective performance is not still good enough.
Aluminum plastic film in the market is mainly made up of sandwich construction：Middle aluminium foil layer, in aluminium foil layer both sides distributing binders oxidant layer, adventitia
Layer and adhesive phase, theca interna.Wherein, theca externa mainly selects the polyester or polyamide of heat resistance, and theca externa is with
Between the bonding mode of aluminium foil layer be mainly dry type and be combined, the bonding mode of theca interna and middle aluminium foil layer mainly have dry type compound and
Hot method is combined.
It is exactly the direct layer in material surface by adhesive coateds such as polyurethane, epoxy resin, acrylic acid that so-called dry type is compound
Pressure is bonded.Hot method is combined the binder resin for being exactly to heat and directly extrudes between aluminium foil layer and theca interna, using hot melt
Property binder resin viscosity both are bonded together.However, above-mentioned 2 kinds of methods there are the following problems：Dry type complex method is adopted
Contain a large amount of organic solvents in adhesive, highly volatile so as to cause environmental pollution, and during lithium battery use
Once electrolyte passes through inner layer material, the electrolyte of deep-etching will decompose adhesive, and then corrosive aluminum foil and cladding material,
Lithium battery is caused to leak.And hot method many membrane material guides of compound needs, also need by complicated film early stage preheating procedure,
Complex process, improves production cost, also extends the production cycle.Additionally, whether dry type is combined or hot method is combined, all need
Ready-made theca interna and theca externa is separately purchased, thus production cost is higher.
For above-mentioned technical problem, Chinese invention patent CN104241556 discloses a kind of using brand-new multi-layer co-extruded
The lithium battery flexible packaging aluminum plastic film of casting technology production, but by reading over discovery, the method is to bond new function
Resin bed（Using homo-polypropylene as base material, the copolymer of phenylethylene-maleic anhydride is activated monomer, cumyl peroxide
As additive）Using multi-screw extruder extrusion process, and the polyester layer in outside（PET）With inner side co-polypropylene layer（CPP）
It is still the membrane material for preparing in advance, is not multi-layer co-extruded curtain coating production technology truly, referring to its claim 1
With 8, its aluminum base layer for including centre, inner side is distributed as new function bonding resin layer (AD), polyester layer from inside to outside successively
(PET), co-polypropylene layer (CPP), outside is distributed as new function bonding resin layer (AD), polyester layer from inside to outside successively
(PET), homo-polypropylene (PP)；It is final to prolong coextrusion using five laminar flows, the processing of multilayer mutual aid the tape casting technique is carried out, here
Five layers refer respectively to aluminum base layer, polyester layer (PET), co-polypropylene layer (CPP), polyester layer (PET), homo-polypropylene (PP), thus
It can be seen that, this 5 layers is all using ready-made aluminium lamination, theca interna and theca externa.Likewise, Chinese invention patent CN105789497 is public
Open a kind of lithium battery produced using brand-new multi-layer co-extruded casting technology and be packed for aluminum plastic film, actually also simply will be new
Function bonding resin layer（Using homo-polypropylene as base material, the copolymer of phenylethylene-maleic anhydride is activated monomer, peroxidating
Diisopropylbenzene (DIPB) is used as additive）Using multi-screw extruder extrusion process, outer layer is bi-component bonding coating nylon layer（OPA）,
Internal layer is co-polypropylene layer（CPP）, it is the membrane material for preparing in advance, nor multi-layer co-extruded curtain coating life truly
Production. art.
Therefore, the preparation method that a kind of lithium battery is packed for aluminum plastic film is developed, to simplify preparation technology, reduces cost is prevented
Only organic solvent-free volatilization, it is clear that with positive realistic meaning.
The content of the invention
Goal of the invention of the invention is to provide the preparation method that a kind of lithium battery is packed for aluminum plastic film.
To achieve the above object of the invention, the technical solution adopted by the present invention is：A kind of lithium battery is packed for the system of aluminum plastic film
Preparation Method, it is characterised in that comprise the following steps：
(1) cladding material and the first binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to aluminium foil side film forming；
The cladding material in aluminium foil side film forming is one layer or two layers；
When cladding material is one layer, cladding material and the first binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to aluminium foil side film forming in screw extruder；Wherein, described first material is bonded
Material position is between cladding material layer and aluminium foil；The cladding material is selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon
612nd, one or more in nylon 1010, PET, PEN；Described first bonds material
Material selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or
Acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride
Or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, horse
Carry out one or more in acid anhydrides or acrylic acid modified ethylene-methyl acrylate copolymer；
When cladding material is two layers, the first cladding material, the second cladding material and the first binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to aluminium foil side in screw extruder
Film forming；Sequentially form from inside to outside is aluminium foil layer, the first bonding material layer, the first cladding material layer, the second cladding material layer；Institute
State the first cladding material and the second cladding material different, be respectively selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon 612,
One or more in nylon 1010, PET, PEN；The first binding material choosing
From ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or propylene
The modified polyethylene of acid and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride or third
The modified ethylene-vinyl acetate copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, maleic acid
One or more in acid anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
(2) inner layer material and the second binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to the opposite side film forming of aluminium foil；
The inner layer material in aluminium foil opposite side film forming is one layer or two layers；
When inner layer material is one layer, inner layer material and the second binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to the opposite side film forming of aluminium foil in screw extruder；Wherein, described second glues
Knot material is located between inner layer material layer and aluminium foil；The inner layer material is selected from polyethylene and its copolymer, polypropylene and its is total to
One or more in polymers；Second binding material be selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer,
Ethylene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid
Modified polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or third
In the modified ethylene-acrylic acid copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer one
Plant or several；
When inner layer material is two layers, the first inner layer material, the second inner layer material and the second binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to the another of aluminium foil in screw extruder
Side film forming；The second inner layer material layer, the first inner layer material layer, the second bonding material layer, aluminium foil layer are sequentially formed from inside to outside；
First inner layer material and the second inner layer material are different, are respectively selected from polyethylene and its copolymer, polypropylene and its copolymer
In one or more；Second binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, second
Alkene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid change
The polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or propylene of property
One kind in the modified ethylene-acrylic acid copolymer of acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer
Or it is several；
Can obtain lithium battery pack dress aluminum plastic film；
First binding material and the second binding material are identical or different.
Preferably, after step (2), aluminum plastic film is carried out into heating pressurized treatments.
Preferably, the fusing point of the cladding material is 165-280 DEG C, and the fusing point of the inner layer material is 70-165 DEG C, institute
The fusing point for stating the first binding material and the second binding material is 60-150 DEG C.
Preferably, when cladding material is one layer, the thickness of the cladding material layer is 15-35 microns；Work as cladding material
For two layers when, the thickness of first cladding material layer is 10-20 micron, and the thickness of the second cladding material layer is 10-20
Micron；
Preferably, when inner layer material is one layer, the thickness of the inner layer material layer is 25-60 microns；When inner layer material is two
During layer, the thickness of the first inner layer material layer is 10-35 microns, and the thickness of the second inner layer material layer is 10-35 microns；
Preferably, the thickness of first binding material and the second binding material is 4-20 microns；The thickness of the aluminium foil is 30-
70 microns.
Pin hole is the major defect of aluminium foil, and dust, impurity in air in the preparation process of aluminium foil etc. enter in pressure roller
Pin hole can be caused, the aluminium foil surface pin hole number less than 6 microns is more, it is impossible to meet the barrier property of aluminum plastic film；Meanwhile, aluminium
Mechanical strength is smaller when paper tinsel is too thin, and too thick is difficult to bond and improve production cost.It is therefore preferable that the thickness of aluminium foil layer is
30-70 microns.
Preferably, the aluminium foil using it is preceding also carry out before process,
The pre-treatment is the one kind in cleaning treatment, silane coupler or titanate coupling agent priming coat process, sided corona treatment
Or it is several.
Preferably, the aluminium foil is the soft state high-mouldability aluminium foil by making annealing treatment.The aluminium foil has good extension
Property and mechanical property.
A kind of corresponding another technical scheme, lithium battery is packed for the preparation method of aluminum plastic film, including following step
Suddenly：
(1) cladding material and the first binding material are added separately in two layers of A screw rods and B screw rods of co-extruded sheet unit,
Simultaneously coextrusion casting to aluminium foil side film forming is melted in screw extruder；
Wherein, first binding material is located between cladding material layer and aluminium foil；
The cladding material is selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon 612, nylon 1010, poly terephthalic acid
One or more in second diester, PEN；
First binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate
Copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and
Its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified second
One or more in alkene-acrylic copolymer, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
(2) by the first inner layer material, the second inner layer material and the second binding material be added separately to it is three-layer co-extruded go out units for sheet material
A screw rods, B screw rods and C screw rods in, while melting coextrusion casting to the opposite side film forming of aluminium foil in screw extruder；
The second inner layer material layer, the first inner layer material layer, the second bonding material layer, aluminium foil layer are sequentially formed from inside to outside；
Can obtain lithium battery pack dress aluminum plastic film；
First inner layer material and the second inner layer material are different, are respectively selected from polyethylene and its copolymer, polypropylene and its are total to
One or more in polymers；
Second binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate
Copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and
Its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified second
One or more in alkene-acrylic copolymer, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
First binding material and the second binding material are identical or different.
Preferably, after step (2), aluminum plastic film is carried out into heating pressurized treatments.
Preferably, the thickness of the cladding material is 15-35 microns；
Preferably, the thickness of first inner layer material is 10-35 microns, and the thickness of the second inner layer material is 10-35 microns；
Preferably, the thickness of first binding material and the second binding material is 4-20 microns；The thickness of the aluminium foil is 30-
70 microns.
A kind of corresponding another technical scheme, lithium battery is packed for the preparation method of aluminum plastic film, including following step
Suddenly：
(1) cladding material and the first binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to aluminium foil side film forming；
The cladding material in aluminium foil side film forming is one layer or two layers；
When cladding material is one layer, cladding material and the first binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to aluminium foil side film forming in screw extruder；Wherein, described first material is bonded
Material position is between cladding material layer and aluminium foil；The cladding material is selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon
612nd, one or more in nylon 1010, PET, PEN；Described first bonds material
Material selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or
Acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride
Or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, horse
Carry out one or more in acid anhydrides or acrylic acid modified ethylene-methyl acrylate copolymer；
When cladding material is two layers, the first cladding material, the second cladding material and the first binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to aluminium foil side in screw extruder
Film forming；Sequentially form from inside to outside is aluminium foil layer, the first bonding material layer, the first cladding material layer, the second cladding material layer；Institute
State the first cladding material and the second cladding material different, be respectively selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon 612,
One or more in nylon 1010, PET, PEN；The first binding material choosing
From ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or propylene
The modified polyethylene of acid and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride or third
The modified ethylene-vinyl acetate copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, maleic acid
One or more in acid anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
(2) one layer or two layers of inner layer material layer are bonded to the opposite side of aluminium foil using the method that hot method is compound or dry type is compound；
Can obtain lithium battery pack dress aluminum plastic film.
The aluminum plastic film be followed successively by from inside to outside the second inner layer material layer, the first inner layer material layer, tack coat, aluminium foil layer,
First bonding material layer, the first cladding material layer, the second cladding material layer.
Above, in the step (2) method that hot method is compound or dry type is compound is prior art.First internal layer
Material layer, the second inner layer material layer are also using existing inner layer material.
A kind of corresponding another technical scheme, lithium battery is packed for the preparation method of aluminum plastic film, including following step
Suddenly：
(1) one layer or two layers of cladding material layer are bonded to the side of aluminium foil using the method that hot method is compound or dry type is compound；
(2) inner layer material and the second binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to the opposite side film forming of aluminium foil；
The inner layer material in aluminium foil opposite side film forming is one layer or two layers；
When inner layer material is one layer, inner layer material and the second binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to the opposite side film forming of aluminium foil in screw extruder；Wherein, described second glues
Knot material is located between inner layer material layer and aluminium foil；The inner layer material is selected from polyethylene and its copolymer, polypropylene and its is total to
One or more in polymers；Second binding material be selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer,
Ethylene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid
Modified polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or third
In the modified ethylene-acrylic acid copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer one
Plant or several；
When inner layer material is two layers, the first inner layer material, the second inner layer material and the second binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to the another of aluminium foil in screw extruder
Side film forming；The second inner layer material layer, the first inner layer material layer, the second bonding material layer, aluminium foil layer are sequentially formed from inside to outside；
First inner layer material and the second inner layer material are different, are respectively selected from polyethylene and its copolymer, polypropylene and its copolymer
In one or more；Second binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, second
Alkene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid change
The polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or propylene of property
One kind in the modified ethylene-acrylic acid copolymer of acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer
Or it is several；
Can obtain lithium battery pack dress aluminum plastic film.
The aluminum plastic film be followed successively by from inside to outside the second inner layer material layer, the first inner layer material layer, tack coat, aluminium foil layer,
First bonding material layer, the first cladding material layer, the second cladding material layer.
Above, in the step (2) method that hot method is compound or dry type is compound is prior art.First internal layer
Material layer, the second inner layer material layer are also using existing inner layer material.
The present invention is claimed and is packed for aluminum plastic film using lithium battery obtained in above-mentioned preparation method simultaneously.
Working mechanism of the invention is：Outer layer or inner layer material are melted by the way of screw extruder melting coextrusion casting
Melt coextrusion casting to aluminium foil surface film forming；For outer layer and internal layer, cladding material（Or inner layer material）With binding material simultaneously
The melting extrusion in screw extruder, in the cladding material of molten condition（Or inner layer material）Can be mutual in interlayer with binding material
Infiltration, being cast to when aluminium foil surface is laminated whne it can make the combination of interlayer more firm, while being in molten condition layers of material
Can prevent bubble occur when bonding, can further improve the bond strength of interlayer；
In addition, the present invention uses thermoplastic binder resin as tack coat, and the plastic-aluminum prepared using multi-layer co-extruded the tape casting
Thickness and the material stress distribution of film are more uniform, improve the barrier property and electrolyte resistance corrosive nature of aluminum plastic film.
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
1. the present invention devises the preparation method that a kind of new lithium battery is packed for aluminum plastic film, and co-extrusion is melted using screw extruder
Cladding material or inner layer material are melted coextrusion casting to aluminium foil surface film forming by the mode of curtain coating；Cladding material（Or inner layer material）
With binding material simultaneously the melting extrusion in screw extruder, in the cladding material of molten condition（Or inner layer material）With bonding material
Material can interpenetrate in interlayer, and being cast to when aluminium foil surface is laminated whne it can make the combination of interlayer more firm, while in melting
State layers of material can also prevent bubble occur when bonding, and can further improve the bond strength of interlayer；
2nd, the plastic pellet and bonding material layer of melting directly can be coextruded to aluminium foil layer surface heat bonding curtain coating by the present invention
Film forming, it is not necessary to separately purchase ready-made theca interna and theca externa, in process of production without extra film guide, thus
Production cost is greatly reduced, significant economic effect is achieved；
3rd, experiment is proved：The thickness of aluminum plastic film and material stress distribution are more uniform as obtained in the method for the present invention, and interlayer glues
Knotting strength is high, and the barrier property and electrolyte resistance corrosive nature of aluminum plastic film are more preferably；
4th, preparation method of the invention is simple, it is easy to accomplish, and without organic solvent volatilization, low production cost is suitable to promote and answers
With.
Specific embodiment
With reference to embodiment, the invention will be further described：
Embodiment one
A kind of lithium battery is packed for the preparation method of aluminum plastic film, comprises the following steps：
1st, from the soft aluminium foil that thickness is 40 microns, degreasing annealing is carried out first, remove the grease of aluminium foil surface；Then
Conversion process is carried out with chromium phosphate, chromic nitrate etc., to improve the decay resistance of aluminium foil；It is last to process aluminium with silane coupler again
Paper tinsel, to improve the adhesive property of aluminium foil；Aluminium foil after treatment between rubber rollers and chill roll, is carried out into outer layer curtain coating by one
Co-extrusion film formation process；
2nd, nylon 6, ethylene-methyl acrylate copolymer is put into two layers of A screw rods and B screw rods of co-extruded sheet unit respectively,
It is 170-280 DEG C to control temperature；Make the ethylene-methyl acrylate copolymer of B Screw Extrusions towards aluminium foil simultaneously；Two layers of coextrusion
The material of units for sheet material extrusion is cast in aluminium foil surface, then passes through rubber rollers and chill roll, carries out laminate adhesive；Then, will
Aluminium foil layer upset is by between another rubber rollers and chill roll, carrying out the coextrusion casting film formation process of internal layer；
3rd, HOPP, block copolymerization polypropylene, maleic anhydride grafted PP are put into three-layer co-extruded slice respectively
In the A screw rods of material unit, B screw rods and C screw rods, temperature is controlled for 170-250 DEG C, the maleic anhydride grafting for extruding screw rod C changes
Property polypropylene towards aluminium foil simultaneously；It is three-layer co-extruded go out units for sheet material extrusion material be cast in aluminium foil surface, then pass through rubber
Roller and chill roll, carry out laminate adhesive；
4th, the aluminum plastic film of above-mentioned multi-layer co-extruded curtain coating is carried out into postorder treatment, is laminated through two laminating rolls, make aluminum plastic film each
Interlayer is further bonded；
5th, will bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product S1.
Embodiment two
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using multi-layer co-extruded casting technique, and method is shown in Table 1 with embodiment one, the condition of setting.
Aluminium foil layer and internal layer are compound using dry-lamination process, by the aluminium foil opposite side spraying of outer layer on coextrusion casting
Or one layer of polyurethane adhesive of blade coating, directly with cast polypropylene film CPP laminated bondings.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product S2.
Embodiment three
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using multi-layer co-extruded casting technique, and method is shown in Table 1 with embodiment one, the condition of setting.
Aluminium foil layer and internal layer are compound using hot method combination process, and ethylene-acrylic acid copolymer is added into single screw extrusion machine,
Control screw extruder temperature for 170-250 DEG C, direct melting extrusion is thin in the aluminium foil side of outer layer offside and cast polypropylene
Between film CPP, carry out internal layer hot pressing and be combined.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product S3.
Example IV
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using dry-lamination process, and method is shown in Table 1 with embodiment two, the condition of setting.
Aluminium foil layer and internal layer are compound using multi-layer co-extruded casting technique, and method is shown in Table 1 with embodiment one, the condition of setting.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product S4.
Embodiment five
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using hot method combination process, and method is shown in Table 1 with embodiment three, the condition of setting.
Aluminium foil layer and internal layer are compound using multi-layer co-extruded casting technique, and method is shown in Table 1 with embodiment one, the condition of setting.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product S5.
Comparative example one
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using dry-lamination process, and method is shown in Table 1 with embodiment two, the condition of setting.
Aluminium foil layer and internal layer are also adopted by dry-lamination process and are combined, and method is shown in Table 1 with embodiment two, the condition of setting.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product P1.
Comparative example two
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using dry-lamination process, and method is shown in Table 1 with embodiment two, the condition of setting.
Aluminium foil layer and internal layer are also adopted by hot method combination process and are combined, and method is shown in Table 1 with embodiment three, the condition of setting.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product P2.
Comparative example three
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using hot method combination process, and method is shown in Table 1 with embodiment three, the condition of setting.
Aluminium foil layer and internal layer are also adopted by dry-lamination process and are combined, and method is shown in Table 1 with embodiment two, the condition of setting.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product P3.
Comparative example four
The handling process of aluminium foil layer is with embodiment one.
Aluminium foil layer and outer layer are compound using hot method combination process, and method is shown in Table 1 with embodiment three, the condition of setting.
Aluminium foil layer and internal layer are also adopted by hot method combination process and are combined, and method is shown in Table 1 with embodiment three, the condition of setting.
Above-mentioned aluminum plastic film is carried out into postorder treatment, is laminated through two laminating rolls, each interlayer of aluminum plastic film is further glued
Close.
To bond the aluminum plastic film that completes through supercooling, draw, the operation such as batch and obtain finished product P4.
Lithium battery obtained in above-described embodiment and comparative example is packed for into aluminum plastic film carries out performance test, and test result is shown in Table 2, tool
Body examination method for testing is as follows：
1, outward appearance：By visual observation come detect the presence of pin hole, scratch and foreign matter, evaluate aluminum plastic film outward appearance.
2, interlaminar strength test：With reference to GB/T 2792-2014《180 ° of peeling strength test methods of pressure-sensitive tape》
The test method operation of regulation is carried out.Wherein, peel angle：180 °, peeling rate：150mm/min.
3, the test of electrolyte resistance performance：Sample is placed in 85 DEG C of electrolyte and is soaked 15 days, Sample Width：15 mm, peel off
Angle：180 °, peeling rate：150mm/min.
4, barrier property test：Sample bag, injection electrolyte sealing, soaks 7 days in 45 DEG C of water, in test electrolyte
Moisture.
In the present invention, the raw material for being used are as follows：
Heat-resistant resin：Nylon 6 selects Dupont（73G20L, fusing point is 230 DEG C）, nylon66 fiber selection Dupont
（70G33L, fusing point is 255 DEG C）, PET selection Dupont（FR530, fusing point is 260 DEG C）, the stretched film of nylon 6 and nylon66 fiber draw
Stretch film and be selected from Cologne company of South Korea.
Jointing material：Ethylene-acrylic acid copolymer selects LG-DOW（5980I, fusing point is 77 DEG C）, ethylene-acrylic acid
Methyl terpolymer is selected from Dupont（1214AC, fusing point is 62 DEG C）, epoxyn and polyurethane adhesive be selected from 3M
Company, maleic anhydride modified polypropylene are selected from Dupont（P353, fusing point is 135 DEG C）, maleic anhydride modified polyethylene is selected from
Dupont（E100, fusing point is 134 DEG C）.
Aluminium foil：Selected from Japanese Japan's Aluminum 8021 or 8079.
Thermoplastic resin：Block copolymerization polypropylene is selected from South Korea's Samsung（BI800, fusing point is 165 DEG C）, random copolymerization poly- third
Alkene is selected from TPC companies of Singapore（FS5611, fusing point is 135 DEG C）, HOPP be selected from South Korea's Samsung（BI452, fusing point is
164℃）, CPP films be selected from Wenzhou Xin Tai new materials limited company.
CPP films：That is cast polypropylene film cast polypropylene, also referred to as un-stretched polypropylene film, CPP films are
By being cast polypropylene (PP) film that extrusion process is produced in plastic cement industry；Such film and BOPP (two-way polypropylene) film
Difference, belongs to non-oriented film.Strictly speaking, CPP films are only orientated in longitudinal direction (MD) direction in the presence of certain, mainly due to technique
Caused by property.Quickly cooled down by chill casting roller, excellent definition and finish is formed on film.
By upper table 2 as can be seen that being packed for aluminum plastic film using lithium battery prepared by multi-layer co-extruded casting technique of the invention
Than the aluminum plastic film of the compound and hot method combination process preparation using dry type（Comparative example）With more excellent outward appearance and barrier property.Its
In, the aluminum plastic film that internal layer and outer layer are prepared using multi-layer co-extruded curtain coating has optimal performance, its interlaminar strength, resistance to electrolysis
Fluidity is above the aluminum plastic film prepared by other method, and immersion remains to keep stripping higher in 15 days in the electrolyte of severe corrosive
From intensity.Therefore, the aluminum plastic film that prepared by multi-layer co-extruded casting technique of the invention have good appearance, interlaminar strength high,
Good electrolyte resistance performance and high barrier, meanwhile, the method need not separately purchase heat-resistant resin film or thermoplasticity
Resin film, it is not necessary to additionally purchase film guide, reduce production cost, simplify operating process.
Above-described embodiment is only the preferred embodiment of the present invention, it is impossible to limit the scope of protection of the invention according to this, this
The change and replacement of any unsubstantiality that the technical staff in field is done on the basis of of the invention belong to the present invention and want
Seek the scope of protection.
Claims (12)
1. a kind of lithium battery is packed for the preparation method of aluminum plastic film, it is characterised in that comprise the following steps：
(1) cladding material and the first binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to aluminium foil side film forming；
The cladding material in aluminium foil side film forming is one layer or two layers；
When cladding material is one layer, cladding material and the first binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to aluminium foil side film forming in screw extruder；Wherein, described first material is bonded
Material position is between cladding material layer and aluminium foil；The cladding material is selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon
612nd, one or more in nylon 1010, PET, PEN；Described first bonds material
Material selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or
Acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride
Or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, horse
Carry out one or more in acid anhydrides or acrylic acid modified ethylene-methyl acrylate copolymer；
When cladding material is two layers, the first cladding material, the second cladding material and the first binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to aluminium foil side in screw extruder
Film forming；Sequentially form from inside to outside is aluminium foil layer, the first bonding material layer, the first cladding material layer, the second cladding material layer；Institute
State the first cladding material and the second cladding material different, be respectively selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon 612,
One or more in nylon 1010, PET, PEN；The first binding material choosing
From ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or propylene
The modified polyethylene of acid and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride or third
The modified ethylene-vinyl acetate copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, maleic acid
One or more in acid anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
(2) inner layer material and the second binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to the opposite side film forming of aluminium foil；
The inner layer material in aluminium foil opposite side film forming is one layer or two layers；
When inner layer material is one layer, inner layer material and the second binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to the opposite side film forming of aluminium foil in screw extruder；Wherein, described second glues
Knot material is located between inner layer material layer and aluminium foil；The inner layer material is selected from polyethylene and its copolymer, polypropylene and its is total to
One or more in polymers；Second binding material be selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer,
Ethylene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid
Modified polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or third
In the modified ethylene-acrylic acid copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer one
Plant or several；
When inner layer material is two layers, the first inner layer material, the second inner layer material and the second binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to the another of aluminium foil in screw extruder
Side film forming；The second inner layer material layer, the first inner layer material layer, the second bonding material layer, aluminium foil layer are sequentially formed from inside to outside；
First inner layer material and the second inner layer material are different, are respectively selected from polyethylene and its copolymer, polypropylene and its copolymer
In one or more；Second binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, second
Alkene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid change
The polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or propylene of property
One kind in the modified ethylene-acrylic acid copolymer of acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer
Or it is several；
Can obtain lithium battery pack dress aluminum plastic film；
First binding material and the second binding material are identical or different.
2. lithium battery according to claim 1 is packed for the preparation method of aluminum plastic film, it is characterised in that：Step (2) it
Afterwards, aluminum plastic film is carried out into heating pressurized treatments.
3. lithium battery according to claim 1 is packed for the preparation method of aluminum plastic film, it is characterised in that：The cladding material
Fusing point be 165-280 DEG C, the fusing point of the inner layer material is 70-165 DEG C, first binding material and the second binding material
Fusing point be 60-150 DEG C.
4. lithium battery according to claim 1 is packed for the preparation method of aluminum plastic film, it is characterised in that：When cladding material is
At one layer, the thickness of the cladding material layer is 15-35 microns；When cladding material is two layers, the first cladding material layer
Thickness be 10-20 micron, the thickness of second cladding material layer is 10-20 microns；
When inner layer material is one layer, the thickness of the inner layer material layer is 25-60 microns；When inner layer material is two layers, institute
The thickness for stating the first inner layer material layer is 10-35 microns, and the thickness of the second inner layer material layer is 10-35 microns；
The thickness of first binding material and the second binding material is 4-20 microns；The thickness of the aluminium foil is 30-70 microns.
5. lithium battery according to claim 1 is packed for the preparation method of aluminum plastic film, it is characterised in that：The aluminium foil makes
Pre-treatment is also carried out with preceding,
The pre-treatment is the one kind in cleaning treatment, silane coupler or titanate coupling agent priming coat process, sided corona treatment
Or it is several.
6. lithium battery according to claim 1 is packed for the preparation method of aluminum plastic film, it is characterised in that：The aluminium foil be through
Cross the soft state high-mouldability aluminium foil of annealing.
7. a kind of lithium battery is packed for the preparation method of aluminum plastic film, it is characterised in that comprise the following steps：
(1) cladding material and the first binding material are added separately in two layers of A screw rods and B screw rods of co-extruded sheet unit,
Simultaneously coextrusion casting to aluminium foil side film forming is melted in screw extruder；
Wherein, first binding material is located between cladding material layer and aluminium foil；
The cladding material is selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon 612, nylon 1010, poly terephthalic acid
One or more in second diester, PEN；
First binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate
Copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and
Its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified second
One or more in alkene-acrylic copolymer, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
(2) by the first inner layer material, the second inner layer material and the second binding material be added separately to it is three-layer co-extruded go out units for sheet material
A screw rods, B screw rods and C screw rods in, while melting coextrusion casting to the opposite side film forming of aluminium foil in screw extruder；
The second inner layer material layer, the first inner layer material layer, the second bonding material layer, aluminium foil layer are sequentially formed from inside to outside；
Can obtain lithium battery pack dress aluminum plastic film；
First inner layer material and the second inner layer material are different, are respectively selected from polyethylene and its copolymer, polypropylene and its are total to
One or more in polymers；
Second binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate
Copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and
Its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified second
One or more in alkene-acrylic copolymer, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
First binding material and the second binding material are identical or different.
8. lithium battery according to claim 7 is packed for the preparation method of aluminum plastic film, it is characterised in that：Step (2) it
Afterwards, aluminum plastic film is carried out into heating pressurized treatments.
9. lithium battery according to claim 7 is packed for the preparation method of aluminum plastic film, it is characterised in that：The cladding material
Thickness be 15-35 microns；
The thickness of first inner layer material is 10-35 microns, and the thickness of the second inner layer material is 10-35 microns；
The thickness of first binding material and the second binding material is 4-20 microns；The thickness of the aluminium foil is 30-70 microns.
10. a kind of lithium battery is packed for the preparation method of aluminum plastic film, it is characterised in that comprise the following steps：
(1) cladding material and the first binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to aluminium foil side film forming；
The cladding material in aluminium foil side film forming is one layer or two layers；
When cladding material is one layer, cladding material and the first binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to aluminium foil side film forming in screw extruder；Wherein, described first material is bonded
Material position is between cladding material layer and aluminium foil；The cladding material is selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon
612nd, one or more in nylon 1010, PET, PEN；Described first bonds material
Material selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or
Acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride
Or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, horse
Carry out one or more in acid anhydrides or acrylic acid modified ethylene-methyl acrylate copolymer；
When cladding material is two layers, the first cladding material, the second cladding material and the first binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to aluminium foil side in screw extruder
Film forming；Sequentially form from inside to outside is aluminium foil layer, the first bonding material layer, the first cladding material layer, the second cladding material layer；Institute
State the first cladding material and the second cladding material different, be respectively selected from nylon 6, nylon66 fiber, nylon 12, NYLON610, nylon 612,
One or more in nylon 1010, PET, PEN；The first binding material choosing
From ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, maleic anhydride or propylene
The modified polyethylene of acid and its copolymer, maleic anhydride or acrylic acid modified polypropylene and its copolymer, maleic anhydride or third
The modified ethylene-vinyl acetate copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-acrylic acid copolymer, maleic acid
One or more in acid anhydride or acrylic acid modified ethylene-methyl acrylate copolymer；
(2) one layer or two layers of inner layer material layer are bonded to the opposite side of aluminium foil using the method that hot method is compound or dry type is compound；
Can obtain lithium battery pack dress aluminum plastic film.
A kind of 11. lithium batteries are packed for the preparation method of aluminum plastic film, it is characterised in that comprise the following steps：
(1) one layer or two layers of cladding material layer are bonded to the side of aluminium foil using the method that hot method is compound or dry type is compound；
(2) inner layer material and the second binding material are added separately in the screw rod of co-extruded sheet unit, while being squeezed in screw rod
Go out machine and melt coextrusion casting to the opposite side film forming of aluminium foil；
The inner layer material in aluminium foil opposite side film forming is one layer or two layers；
When inner layer material is one layer, inner layer material and the second binding material are added separately to two layers of co-extruded sheet unit
In A screw rods and B screw rods, while melting coextrusion casting to the opposite side film forming of aluminium foil in screw extruder；Wherein, described second glues
Knot material is located between inner layer material layer and aluminium foil；The inner layer material is selected from polyethylene and its copolymer, polypropylene and its is total to
One or more in polymers；Second binding material be selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer,
Ethylene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid
Modified polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or third
In the modified ethylene-acrylic acid copolymer of olefin(e) acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer one
Plant or several；
When inner layer material is two layers, the first inner layer material, the second inner layer material and the second binding material are added separately to three
In the layer A screw rods of co-extruded sheet unit, B screw rods and C screw rods, while melting coextrusion casting to the another of aluminium foil in screw extruder
Side film forming；The second inner layer material layer, the first inner layer material layer, the second bonding material layer, aluminium foil layer are sequentially formed from inside to outside；
First inner layer material and the second inner layer material are different, are respectively selected from polyethylene and its copolymer, polypropylene and its copolymer
In one or more；Second binding material is selected from ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, second
Alkene-methyl acrylate copolymer, maleic anhydride or acrylic acid modified polyethylene and its copolymer, maleic anhydride or acrylic acid change
The polypropylene and its copolymer, maleic anhydride or acrylic acid modified ethylene-vinyl acetate copolymer, maleic anhydride or propylene of property
One kind in the modified ethylene-acrylic acid copolymer of acid, maleic anhydride or acrylic acid modified ethylene-methyl acrylate copolymer
Or it is several；
Can obtain lithium battery pack dress aluminum plastic film.
12. are packed for aluminum plastic film using lithium battery obtained in any one preparation method in claim 1 to 11.
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| CN108794788A (en) * | 2018-05-16 | 2018-11-13 | 上海恩捷新材料科技股份有限公司 | A kind of flexible package and preparation method thereof |
| CN109370203A (en) * | 2018-09-08 | 2019-02-22 | 浙江华正能源材料有限公司 | A kind of lithium battery flexible packaging outer layer membrane material and its preparation process |
| CN109494317A (en) * | 2018-09-17 | 2019-03-19 | 上海恩捷新材料科技有限公司 | A kind of aluminum plastic film of electrolyte resistance and preparation method thereof |
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| CN109940939A (en) * | 2018-09-08 | 2019-06-28 | 浙江华正能源材料有限公司 | A kind of secondary energy sources battery use packing material |
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| CN110828744A (en) * | 2020-01-13 | 2020-02-21 | 比亚迪股份有限公司 | Battery, battery pack and electric vehicle |
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| CN107521064A (en) * | 2017-08-14 | 2017-12-29 | 浙江康骏机械有限公司 | Lithium battery aluminum-plastic composite membrane coextru-lamination preparation method |
| CN108656491A (en) * | 2018-04-24 | 2018-10-16 | 苏州融达信新材料科技有限公司 | A kind of preparation process and its equipment of novel aluminum-plastic composite membrane |
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| CN109940939A (en) * | 2018-09-08 | 2019-06-28 | 浙江华正能源材料有限公司 | A kind of secondary energy sources battery use packing material |
| CN109494317A (en) * | 2018-09-17 | 2019-03-19 | 上海恩捷新材料科技有限公司 | A kind of aluminum plastic film of electrolyte resistance and preparation method thereof |
| CN109560221B (en) * | 2018-12-03 | 2022-07-15 | 桑顿新能源科技有限公司 | Method for improving packaging reliability of aluminum plastic film of soft package battery |
| CN109560221A (en) * | 2018-12-03 | 2019-04-02 | 桑顿新能源科技有限公司 | The method for improving soft-package battery aluminum plastic film package reliability |
| CN110722863A (en) * | 2019-10-15 | 2020-01-24 | 界首市天鸿新材料股份有限公司 | Preparation method of corrosion-resistant flexible packaging film for lithium battery |
| CN110936690A (en) * | 2019-12-25 | 2020-03-31 | 广州市瑞高包装工业有限公司 | Aluminum-plastic composite sheet and preparation method thereof |
| CN110828744B (en) * | 2020-01-13 | 2020-07-10 | 比亚迪股份有限公司 | Battery, battery pack and electric vehicle |
| CN110828744A (en) * | 2020-01-13 | 2020-02-21 | 比亚迪股份有限公司 | Battery, battery pack and electric vehicle |
| CN113629327A (en) * | 2020-05-06 | 2021-11-09 | 浙江鹏远新材料科技集团股份有限公司 | Lithium battery flexible package aluminum-plastic film material and preparation method thereof |
| WO2021223115A1 (en) * | 2020-05-06 | 2021-11-11 | 河源新之源粘贴技术有限公司 | Electrolyte resistance testing method for adhesive tape |
| CN112208167A (en) * | 2020-10-20 | 2021-01-12 | 安徽双津实业有限公司 | Aluminum-plastic film for lithium battery packaging |
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