CN113715444A - Preparation and application of high-strength and high-toughness food packaging film based on PE film substrate - Google Patents
Preparation and application of high-strength and high-toughness food packaging film based on PE film substrate Download PDFInfo
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- CN113715444A CN113715444A CN202111020357.2A CN202111020357A CN113715444A CN 113715444 A CN113715444 A CN 113715444A CN 202111020357 A CN202111020357 A CN 202111020357A CN 113715444 A CN113715444 A CN 113715444A
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- density polyethylene
- low density
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- 239000000758 substrate Substances 0.000 title claims abstract description 34
- 235000013305 food Nutrition 0.000 title claims abstract description 25
- 239000012785 packaging film Substances 0.000 title claims abstract description 23
- 229920006280 packaging film Polymers 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title description 5
- 239000004698 Polyethylene Substances 0.000 claims abstract description 43
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 18
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 18
- 229920001526 metallocene linear low density polyethylene Polymers 0.000 claims abstract description 15
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 10
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 10
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011737 fluorine Substances 0.000 claims abstract description 5
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 239000000155 melt Substances 0.000 claims description 20
- 239000004811 fluoropolymer Substances 0.000 claims description 10
- 229920002313 fluoropolymer Polymers 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000009459 flexible packaging Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 239000005021 flexible packaging material Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 229920006233 biaxially oriented polyamide Polymers 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010096 film blowing Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
Abstract
The invention discloses a high-strength high-toughness food packaging film based on a PE film substrate, which belongs to the technical field of plastic flexible packaging and comprises the PE film substrate and other plastic substrates, wherein the structure based on the PE film comprises an outer layer, a middle layer and an inner layer which are sequentially overlapped; the outer layer comprises linear low density polyethylene, fluorine polymer and metallocene linear low density polyethylene; the middle layer comprises low density polyethylene, linear low density polyethylene, fluorine polymer, metallocene linear low density polyethylene; the inner layer comprises low density polyethylene, linear low density polyethylene, fluorine polymer, metallocene linear low density polyethylene and opening slipping agent. The high-strength high-toughness food packaging film prepared on the basis of the PE film substrate is added with the third-generation metallocene LLDPE in the formula of the PE film, so that the tensile resistance and the flexibility are greatly improved, the corresponding food packaging film is relatively thin, the resources are saved, the cost is reduced, and the economic benefit and the social benefit are obvious.
Description
Technical Field
The invention belongs to the technical field of plastic flexible packaging, and particularly relates to preparation and application of a high-strength high-toughness food packaging film based on a PE film substrate.
Background
The PE film is a common plastic flexible packaging material and is widely applied to packaging of foods, medicines, electronic products, daily chemical products and the like. However, the plastic flexible packaging material is not degradable or has long degradation period, so that the plastic flexible packaging material is not easy to be buried, and secondary pollution to the environment can be caused by combustion treatment, thereby threatening the sustainable development of human beings. Therefore, the research and development of the high-strength and high-toughness food packaging film based on the PE film substrate can realize the minimum material consumption, the minimum waste and the resource and energy conservation by improving the strength and the flexibility of the material and reducing the thickness of the plastic flexible packaging material. It is also an important direction to reduce the waste of plastic packaging and realize green development.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the technical performance of the conventional PE film substrate and provide a high-strength and high-toughness PE film. Correspondingly, the preparation and application of the high-strength high-toughness food packaging film based on the PE film substrate are provided.
In order to solve the technical problems, the invention provides a high-strength high-toughness food packaging film based on a PE film substrate, which comprises the PE film substrate and other plastic substrates, wherein the structure based on the PE film comprises an outer layer, a middle layer and an inner layer which are sequentially overlapped; wherein the outer layer comprises 40 to 45 weight percent of linear low density polyethylene, 0.5 to 1 weight percent of fluoropolymer and 55 to 60 weight percent of metallocene linear low density polyethylene; the middle layer comprises 20 to 25 weight percent of low density polyethylene, 35 to 40 weight percent of linear low density polyethylene, 0.5 to 1 weight percent of fluorine polymer and 35 to 40 weight percent of metallocene linear low density polyethylene; 15 to 20 weight percent of low density polyethylene, 55 to 60 weight percent of linear low density polyethylene, 0.5 to 1 weight percent of fluoropolymer, 25 to 30 weight percent of metallocene linear low density polyethylene and 0.5 to 1 weight percent of opening slipping agent.
Further, the thickness of the blow molding PE film formed by overlapping the outer layer, the middle layer and the inner layer is 45-80 mu.
Further, the outer layer has a linear low density polyethylene melt index of 2, a density of 0.918, Lanzhou petrochemical 7042N; the metallocene linear low density polyethylene of the outer layer is us exxon mobil 6020ML with a melt index of 0.2, density of 0.916; the fluoropolymer of the middle layer is gold hair technology EE0B633 with the melt index of 9 and the density of 0.93.
Further, the low density polyethylene of the middle layer is a landification 2426H with a melt index of 2 and a density of 0.925; the linear low-density polyethylene of the middle layer is 7042N of Lanzhou petrochemical industry with the melt index of 2; the fluoropolymer of the middle layer is gold hair technology EE0B633 with the melt index of 9 and the density of 0.93; the metallocene linear low density polyethylene of the middle layer was exxonmobil 6020ML, usa, having a melt index of 0.2 and a density of 0.916.
Further, the low density polyethylene of the inner layer is landlocked 2426H with a melt index of 2 and a density of 0.925; the linear low density polyethylene of the inner layer is shanghai seiki 0220KJ with a melt index of 2.4 and a density of 0.92; the fluoropolymer of the middle layer is gold hair technology EE0B633 with the melt index of 9 and the density of 0.93; the metallocene linear low density polyethylene of the inner layer is us dow chemical 5400G with a melt index of 1 and a density of 0.916.
The preparation method of the high-strength high-toughness food packaging film based on the PE film substrate comprises the following steps: the PE film substrate and other plastic substrates are compounded in a dry compounding or solvent-free compounding mode.
The application of the high-strength high-toughness food packaging film based on the PE film substrate is particularly applied to food.
Compared with the prior art, the invention has the following advantages:
(1) according to the PE film provided by the invention, the metallocene LLDPE with good tensile resistance and high flexibility is added into the formula of the PE film product in a certain proportion, and after the PE film is processed and formed, the film has high strength, high toughness and good heat sealability.
(2) The composite forming high-strength high-toughness food packaging film prepared based on the PE film substrate can reduce the thickness of the packaging film, so that the cost can be saved.
(3) The high-strength and high-toughness food packaging film based on the PE film substrate reduces material consumption, saves resources and energy sources, reduces plastic wastes and promotes the sustainable development and green development of the society because the thickness of the substrate is properly reduced.
In summary, the high-strength and high-toughness food packaging film prepared based on the PE film substrate in the technology is added with the third-generation metallocene LLDPE in the formula of the PE film, so that the tensile resistance and the flexibility are greatly improved, the thickness of the film can be reduced, the resources are saved, the cost is reduced, the plastic waste is reduced, and the economic benefit and the social benefit are obvious.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1:
(1) based on the PE membrane structure, the PE membrane structure comprises an outer layer, a middle layer and an inner layer which are sequentially overlapped, and the PE membrane structure is prepared from the following raw materials in percentage by mass:
(2) a PE film using the formulation described in example 1, the procedure was as follows: inputting corresponding data of an outer layer (A), a middle layer (B) and an inner layer (C) on an order formula page on a main control console of a film blowing machine according to the material types, material proportions and material densities, respectively setting the temperatures of an extruder A, an extruder B, an extruder C and a die head to 170-175 ℃, and pneumatically blowing into an extruder screw after the set temperature is reached. The mixture is subjected to hot melting extrusion at a die orifice, inflation molding, air cooling, corona treatment and winding to obtain the overlapped outer layer, middle layer and inner layer dies. The performance detection indexes of the PE film after the outer layer, the middle layer and the inner layer are overlapped are as shown in the table:
(3) in conclusion, the PE film substrate and other plastic substrates (such as BOPET, BOPA and the like) are compounded in a dry mode or a solvent-free compounding mode to prepare the high-strength and high-toughness food packaging film.
(4) The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and therefore, modifications, equivalent changes, improvements, etc. made in the claims of the present invention still fall within the scope of the present invention.
Claims (7)
1. The high-strength high-toughness food packaging film based on the PE film substrate is characterized by comprising the PE film substrate and other plastic substrates, wherein the structure based on the PE film comprises an outer layer, a middle layer and an inner layer which are sequentially overlapped; wherein the outer layer comprises 40 to 45 weight percent of linear low density polyethylene, 0.5 to 1 weight percent of fluoropolymer and 55 to 60 weight percent of metallocene linear low density polyethylene; the middle layer comprises 20 to 25 weight percent of low density polyethylene, 35 to 40 weight percent of linear low density polyethylene, 0.5 to 1 weight percent of fluorine polymer and 35 to 40 weight percent of metallocene linear low density polyethylene; 15 to 20 weight percent of low density polyethylene, 55 to 60 weight percent of linear low density polyethylene, 0.5 to 1 weight percent of fluoropolymer, 25 to 30 weight percent of metallocene linear low density polyethylene and 0.5 to 1 weight percent of opening slipping agent.
2. The high-strength high-toughness food packaging film based on the PE film substrate as claimed in claim 1, wherein the thickness of the blown PE film obtained by stacking the outer layer, the middle layer and the inner layer is 45-80 μm.
3. A high strength and high toughness food packaging film based on PE film substrate according to claim 1 wherein the outer layer has a linear low density polyethylene melt index of 2, a density of 0.918, langzhou petrochemical 7042N; the metallocene linear low density polyethylene of the outer layer is us exxon mobil 6020ML with a melt index of 0.2, density of 0.916; the fluoropolymer of the middle layer is gold hair technology EE0B633 with the melt index of 9 and the density of 0.93.
4. A high strength and high toughness food packaging film based on PE film substrate as claimed in claim 1 wherein the low density polyethylene of the middle layer is landification 2426H with a melt index of 2, density of 0.925; the linear low-density polyethylene of the middle layer is 7042N of Lanzhou petrochemical industry with the melt index of 2; the fluoropolymer of the middle layer is gold hair technology EE0B633 with the melt index of 9 and the density of 0.93; the metallocene linear low density polyethylene of the middle layer was exxonmobil 6020ML, usa, having a melt index of 0.2 and a density of 0.916.
5. A high strength and high toughness food packaging film based on PE film substrate as claimed in claim 1 wherein the low density polyethylene of the inner layer is landlocked 2426H, petrochemical having a melt index of 2, density of 0.925; the linear low density polyethylene of the inner layer is shanghai seiki 0220KJ with a melt index of 2.4 and a density of 0.92; the fluoropolymer of the middle layer is gold hair technology EE0B633 with the melt index of 9 and the density of 0.93; the metallocene linear low density polyethylene of the inner layer is us dow chemical 5400G with a melt index of 1 and a density of 0.916.
6. A method for preparing a high strength and high toughness food packaging film based on PE film substrate as claimed in any of claims 1-6, wherein the method comprises: the PE film substrate and other plastic substrates are compounded in a dry compounding or solvent-free compounding mode.
7. Use of a high strength and high toughness food packaging film based on a PE film substrate, characterized in that it is particularly for use in food.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111020357.2A CN113715444A (en) | 2021-09-01 | 2021-09-01 | Preparation and application of high-strength and high-toughness food packaging film based on PE film substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111020357.2A CN113715444A (en) | 2021-09-01 | 2021-09-01 | Preparation and application of high-strength and high-toughness food packaging film based on PE film substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113715444A true CN113715444A (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111020357.2A Withdrawn CN113715444A (en) | 2021-09-01 | 2021-09-01 | Preparation and application of high-strength and high-toughness food packaging film based on PE film substrate |
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| CN (1) | CN113715444A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416744A (en) * | 2011-08-03 | 2012-04-18 | 大连方盛塑料有限公司 | Food packaging plastic base material film and production process thereof |
| CN109747254A (en) * | 2017-11-07 | 2019-05-14 | 长沙银腾塑印包装有限公司 | A kind of blow molding table print PE film |
| CN109747253A (en) * | 2017-11-07 | 2019-05-14 | 长沙银腾塑印包装有限公司 | A kind of blow molding PE film and its production method |
| CN110733218A (en) * | 2019-11-16 | 2020-01-31 | 青岛东海包装产业有限公司 | polyethylene film with high puncture strength and preparation method thereof |
| CN210311681U (en) * | 2019-03-09 | 2020-04-14 | 大连富得膜科技有限公司 | High-strength and high-toughness PE (polyethylene) base material film for rice packaging bag |
-
2021
- 2021-09-01 CN CN202111020357.2A patent/CN113715444A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416744A (en) * | 2011-08-03 | 2012-04-18 | 大连方盛塑料有限公司 | Food packaging plastic base material film and production process thereof |
| CN109747254A (en) * | 2017-11-07 | 2019-05-14 | 长沙银腾塑印包装有限公司 | A kind of blow molding table print PE film |
| CN109747253A (en) * | 2017-11-07 | 2019-05-14 | 长沙银腾塑印包装有限公司 | A kind of blow molding PE film and its production method |
| CN210311681U (en) * | 2019-03-09 | 2020-04-14 | 大连富得膜科技有限公司 | High-strength and high-toughness PE (polyethylene) base material film for rice packaging bag |
| CN110733218A (en) * | 2019-11-16 | 2020-01-31 | 青岛东海包装产业有限公司 | polyethylene film with high puncture strength and preparation method thereof |
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