CN116141816A - Preparation method of composite material based on internal and external corresponding variable codes - Google Patents
Preparation method of composite material based on internal and external corresponding variable codes Download PDFInfo
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- CN116141816A CN116141816A CN202310167458.5A CN202310167458A CN116141816A CN 116141816 A CN116141816 A CN 116141816A CN 202310167458 A CN202310167458 A CN 202310167458A CN 116141816 A CN116141816 A CN 116141816A
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- 238000001035 drying Methods 0.000 claims description 121
- 239000000463 material Substances 0.000 claims description 102
- 238000007639 printing Methods 0.000 claims description 76
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 20
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- 238000004806 packaging method and process Methods 0.000 abstract description 7
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Images
Classifications
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- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7422—Aluminium or alloys of aluminium
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
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- 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
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- B32B2307/30—Properties of the layers or laminate having particular thermal properties
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
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- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- B32B2307/5825—Tear resistant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B2307/00—Properties of the layers or laminate
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2553/00—Packaging equipment or accessories not otherwise provided for
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- 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
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
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Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to the technical field of packaging, in particular to a preparation method of a composite material based on internal and external corresponding variable codes.
Description
Technical Field
The invention relates to the technical field of packaging, in particular to a preparation method of a composite material based on internal and external corresponding variable codes.
Background
Along with the rapid development of economy, the brand awareness and competitiveness of enterprises are rapidly improved, counterfeit phenomena such as photocopying are improved, the counterfeit products not only infringe the benefits of consumers, bring economic losses to the consumers, but also seriously damage the benefits and brand image of the enterprises, and become nightmares for the long-term development of the enterprises, so that the anti-counterfeiting work of the products is a necessary choice for the enterprises facing the trouble of the counterfeit products and the long-term development of the enterprises. The digital identity codes are put into product packaging by using variable data printing, so that the connection between the product and the digital identity codes is realized, and the whole process quality tracking system based on food one-object one-code production is established, so that the anti-counterfeiting problem of the product can be effectively solved.
Patent document with publication number of CN109703151B discloses a preparation method of an aluminum foil easy-to-tear cup cover package based on a variable two-dimensional code and a verification code, which comprises the following steps: adopting an aluminum foil material with the thickness of 9-20 microns, and forming a printed aluminum foil semi-finished product after carrying out color pattern printing on the matte surface layer of the aluminum foil material; the related variable data coding is finished on the front side and the back side at one time through an ink jet process, then an aluminum plastic composite film is formed by a solvent-free composite process with a heat sealing film, and a packaging container is formed by a cup cover sheet and a plastic cup body through die cutting, so that the packaging container is used for automatic packaging and packaging of foods such as betel nuts, chocolate, yoghourt and the like.
In the prior art, the ink sprayed by the ink-jet machine is exposed outside and is easy to wipe and change, so that the failure rate of the variable two-dimensional code is higher.
Disclosure of Invention
Therefore, the invention provides a preparation method of a composite material based on an internal-external correspondence variable code, which can solve the problem of high failure rate of the variable two-dimensional code.
In order to achieve the above purpose, the present invention provides a method for preparing a composite material based on an internal-external correspondence variable code, the method comprising:
if the code printing base material is a composite base material, the first code printing base material and the second code printing base material are compounded to obtain a composite code printing base material, and if the code printing base material is a single code printing base material, the code printing base material is not required to be compounded;
printing positioning cursors on the front side and the back side of a single coding substrate or a composite coding substrate to obtain a first composite material;
performing laser coding on the front and back sides of the first composite material according to the positioning cursor to obtain a second composite material;
a first film material is compounded on the front surface of the second composite material through a first dry type compounding machine to obtain a third composite material, the first dry type compounding machine is provided with a first scraper, a first anilox roller, a first camera device and a first central control module, the first central control module is connected with the first scraper to control the gap between the first scraper and the first anilox roller, the first central control module is connected with the first camera device to receive monitoring data of the first camera device, the monitoring data are thickness information of the third composite material, and the first central control module adjusts the actual contact pressure P of the first scraper and the first anilox roller according to the relation between the actual thickness D of the third composite material and a first preset thickness D0;
a second film material is compounded on the reverse side of the third composite material through a second dry type compounding machine to obtain a fourth composite material, the second dry type compounding machine is provided with a second scraper, a second anilox roller, a second camera device and a second central control module, the second central control module is connected with the second scraper to control the gap between the second scraper and the second anilox roller, the second central control module is connected with the second camera device to receive monitoring data of the second camera device, the monitoring data is thickness information of the fourth composite material, and the second central control module adjusts the actual contact pressure P ' of the second scraper and the second anilox roller according to the relation between the actual thickness D ' of the fourth composite material and a second preset thickness D0 ';
and curing the fourth composite material to obtain a final composite material.
Further, when the first central control module adjusts the actual contact pressure P of the first scraper and the first anilox roller according to the relation between the actual thickness D of the third composite material and the first preset thickness D0,
when D is smaller than k1 xD 0, the first central control module controls the first dry type compound machine to automatically stop and send out maintenance warning information, k1 is a first coefficient,
when k1×d0 is less than or equal to D < D0, the first central control module controls the actual contact pressure P of the first doctor blade and the first anilox roller to be reduced to p×d/D0,
when D0 is less than or equal to D and less than k2 xD 0, the first central control module controls the actual contact pressure P of the first scraper and the first anilox roller to be increased to P x D/D0, k2 is a second coefficient,
when D is more than or equal to k2 xD 0, the first central control module controls the first dry type compound machine to automatically stop and send out overhaul warning information.
Further, when the second central control module adjusts the actual contact pressure P ' of the second scraper and the second anilox roller according to the relation between the actual thickness D ' of the fourth composite material and the second preset thickness D0',
when D '< k3 xD 0', the second central control module controls the second dry type compound machine to stop automatically and send out maintenance warning information, k3 is a third coefficient,
when k3×d0 '. Ltoreq.d' < D0', the second center control module controls the actual contact pressure P' of the second doctor blade and the second anilox roller to be reduced to P '×d/D0',
when D0 'is less than or equal to D' and less than k4 multiplied by D0', the second central control module controls the actual contact pressure P' of the second scraper and the second anilox roller to be increased to P 'multiplied by D/D0', k4 is a fourth coefficient,
and when D 'is not less than k4 multiplied by D0', the second central control module controls the second dry type compound machine to automatically stop and send out overhaul warning information.
Further, the first coding base material and the single coding base material are aluminum foils with the thickness of 10-150 micrometers, the second coding base material is a biaxially oriented polyamide film with the thickness of 50-200 micrometers,
the method is characterized in that the positioning cursor is printed on the front side and the back side of a single code printing substrate or a composite code printing substrate through an intaglio printing machine, the printing length of each minute of the intaglio printing machine is less than or equal to 150 meters, and the drying temperature of the intaglio printing machine is 40-80 ℃.
Further, when the variable codes are printed on the front and back surfaces of the first composite material by a laser coding machine, the relation between the coding depth h1 of the single coding base material and the thickness h2 of the single coding base material is 5% x h2 less than or equal to 15% x h2, the coding length per second of the laser coding machine is 7000 micrometers, the minimum line width of the laser coding machine is 0.2 millimeter, the relation between the coding depth h3 of the laser coding machine on the first coding base material and the thickness h4 of the first coding base material is 5% x h4 less than or equal to 15% x h4, and the relation between the coding depth h5 of the laser coding machine on the biaxially oriented polyamide film and the thickness h6 of the biaxially oriented polyamide film is 10% x h6 less than or equal to 20% x 6.
Further, the first film material is a biaxially oriented polyester film.
Further, when the first film material is compounded on the front surface of the second composite material, the first dry compounding machine is used for compounding the first film material through a first dry compounding machine, the compounding length of each minute of the first dry compounding machine is less than or equal to 180 meters, the first dry compounding machine comprises a first drying box, a second drying box and a third drying box, the first drying box is connected with the second drying box and the first central control module, the second drying box is connected with the third drying box and the first central control module, the third drying box is connected with the first central control module, the position of the first camera device is arranged between the first anilox roller and the first drying box, the drying temperature range of the first drying box is 50-70 ℃, the drying temperature range of the second drying box is 60-80 ℃, and the drying temperature range of the third drying box is 70-90 ℃.
Further, the second film material is a polyethylene film.
Further, when a second film material is compounded on the back surface of the third composite material, the back surface of the third composite material is a surface of the third composite material which does not contain the biaxially oriented polyester film, the compounding length per minute of the second dry type compounding machine is less than or equal to 150 meters, the second dry type compounding machine comprises a fourth drying box, a fifth drying box and a sixth drying box, the fourth drying box is connected with the fifth drying box and the second central control module, the fifth drying box is connected with the sixth drying box and the second central control module, the sixth drying box is connected with the second central control module, the position of the second camera device is arranged between the second anilox roller and the fourth drying box,
the drying temperature of the fourth drying oven ranges from 50 ℃ to 70 ℃, the drying temperature of the fifth drying oven ranges from 60 ℃ to 80 ℃, and the drying temperature of the sixth drying oven ranges from 70 ℃ to 90 ℃.
Further, the curing of the fourth composite material is performed through a curing chamber, the temperature of the curing chamber ranges from 50 ℃ to 70 ℃, and the curing time of the fourth composite material is more than or equal to 72 hours.
Compared with the prior art, the method has the beneficial effects that the two code printing substrates are compounded to obtain the composite code printing substrate or the single code printing substrate is directly adopted, the positioning cursors are printed on the front side and the back side of the composite code printing substrate and/or the single code printing substrate, the code printing area of the variable code is limited, the laser code printing machine is used for printing the variable code according to the positioning cursors, the accuracy of the position of the variable code is improved, the variable code on the composite code printing substrate and/or the single code printing substrate is protected through the front side and the back side composite film materials of the composite code printing substrate and/or the single code printing substrate after the code printing by the laser code printing machine, the chip falling caused by the variable code printing of the composite code printing substrate and/or the single code printing substrate is avoided, the safety of the composite material is improved, the variable code printing substrate and/or the single code printing substrate is prevented from being influenced by toxic volatile matters of the printing ink, the variable code printing efficiency is reduced through the two layers of film materials, and the direct contact between the variable code printing substrate and the outside variable code printing device is avoided.
In particular, the aluminum foil is used as a base material, and the aluminum foil has the characteristics of good barrier property, light-shielding property, glossiness, heat resistance, grease resistance, moisture resistance, waterproofness, air tightness, fragrance retention, composite adaptability and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is enlarged.
Particularly, the invention prints the positioning cursor on the base material by using the intaglio printing machine, and performs coding according to the positioning cursor, thereby improving the accuracy of coding areas.
In particular, the invention uses the laser coding machine to code the base material, the laser coding process is nontoxic, and the safety of the composite material based on the internal-external corresponding variable code is improved.
In particular, the biaxially oriented polyester film is used as the first film, and the biaxially oriented polyester film has the characteristics of good strength, rigidity, transparency, wear resistance, folding resistance, pinhole resistance, tear resistance and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is improved.
In particular, the aluminum foil is used as a base material, and the aluminum foil has the characteristics of good barrier property, light-shielding property, glossiness, heat resistance, grease resistance, moisture resistance, waterproofness, air tightness, fragrance retention, composite adaptability and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is enlarged.
Particularly, the invention prints the positioning cursor on the base material by using the intaglio printing machine, and performs coding according to the positioning cursor, thereby improving the accuracy of coding areas.
In particular, the invention uses the laser coding machine to code the base material, the laser coding process is nontoxic, and the safety of the composite material based on the internal-external corresponding variable code is improved.
In particular, the biaxially oriented polyester film is used as the first film, and the biaxially oriented polyester film has the characteristics of good strength, rigidity, transparency, wear resistance, folding resistance, pinhole resistance, tear resistance and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is improved.
Drawings
FIG. 1 is a schematic flow chart of a method for preparing a composite material based on internal and external corresponding variable codes according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a composite structure with a single substrate prepared by a method for preparing a composite material based on internal and external corresponding variable codes according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a composite structure with a composite substrate according to the method for preparing a composite material based on internal and external variable codes according to an embodiment of the present invention;
reference numerals:
1-outer layer variable codes; 2-inner layer variable codes; 3-biaxially oriented polyester film; 4-aluminum foil; a 5-polyethylene film; 6-biaxially oriented polyamide film.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, the present invention provides a method for preparing a composite material based on an internal-external correspondence variable code, which includes:
s10, if the code printing base material is a composite base material, the first code printing base material and the second code printing base material are compounded to obtain a composite code printing base material, and if the code printing base material is a single code printing base material, the code printing base material is not required to be compounded;
s20, printing positioning cursors on the front side and the back side of a single coding substrate or a composite coding substrate to obtain a first composite material;
s30, performing laser coding on the front side and the back side of the first composite material according to the positioning cursor to obtain a second composite material;
s40, compounding a first film material on the front surface of the second composite material through a first dry type compounding machine to obtain a third composite material, wherein the first dry type compounding machine is provided with a first scraper, a first anilox roller, a first camera device and a first central control module, the first central control module is connected with the first scraper to control the gap between the first scraper and the first anilox roller, the first central control module is connected with the first camera device to receive monitoring data of the first camera device, the monitoring data is thickness information of the third composite material, and the first central control module adjusts the actual contact pressure P of the first scraper and the first anilox roller according to the relation between the actual thickness D of the third composite material and a first preset thickness D0;
s50, compounding a second film material on the reverse side of the third composite material through a second dry type compounding machine to obtain a fourth composite material, wherein the second dry type compounding machine is provided with a second scraper, a second anilox roller, a second camera device and a second central control module, and the second central control module adjusts the actual contact pressure P ' of the second scraper and the second anilox roller according to the relation between the actual thickness D ' of the fourth composite material and a second preset thickness D0 ';
and S60, curing the fourth composite material to obtain a final composite material.
Specifically, the embodiment of the invention obtains the composite code base material by compositing two code base materials or directly adopts a single code base material and prints a positioning cursor on the front side and the back side of the composite code base material and/or the single code base material, the code printing area of the variable code is limited, the laser code printing machine prints the variable code according to the positioning cursor, the accuracy of the position of the variable code is improved, the variable code on the composite code base material and/or the single code base material is protected by the front side and the back side composite film material of the composite code base material and/or the single code base material after the code printing by the laser code printing machine, the chip falling caused by the variable code of the composite code base material and/or the single code base material is avoided, the safety of the composite code base material and/or the single code base material is prevented from being influenced by toxic volatile matters of ink through the use of the laser code printing machine, the safety of the composite code base material is improved, the direct contact between the variable code and the outside is avoided through the coverage of the two layers of film materials, and the variable code losing efficiency is reduced.
Example 1
The invention provides a preparation method of a composite material based on an internal-external correspondence variable code, which comprises the following steps:
s10, printing positioning cursors on the front side and the back side of a single coding substrate to obtain a first composite material;
s20, performing laser coding on the front side and the back side of the first composite material according to the positioning cursor to obtain a second composite material;
s30, compounding a first film material on the front surface of the second composite material through a first dry type compounding machine to obtain a third composite material, wherein the first dry type compounding machine is provided with a first scraper, a first anilox roller, a first camera device and a first central control module, the first central control module is connected with the first scraper to control the gap between the first scraper and the first anilox roller, the first central control module is connected with the first camera device to receive monitoring data of the first camera device, the monitoring data is thickness information of the third composite material, and the first central control module adjusts the actual contact pressure P of the first scraper and the first anilox roller according to the relation between the actual thickness D of the third composite material and a first preset thickness D0;
s40, compounding a second film material on the reverse side of the third composite material through a second dry type compounding machine to obtain a fourth composite material, wherein the second dry type compounding machine is provided with a second scraper, a second anilox roller, a second camera device and a second central control module, the second central control module is connected with the second scraper to control the gap between the second scraper and the second anilox roller, the second central control module is connected with the second camera device to receive monitoring data of the second camera device, the monitoring data is thickness information of the fourth composite material, and the second central control module adjusts the actual contact pressure P ' of the second scraper and the second anilox roller according to the relation between the actual thickness D ' of the fourth composite material and a second preset thickness D0 ';
and S50, curing the fourth composite material to obtain a final composite material.
Specifically, in S10, as shown in fig. 2, the coded base material is an aluminum foil 4 having a thickness of 10 to 150 micrometers.
Specifically, in the embodiment of the invention, the aluminum foil is used as the base material, and the aluminum foil has the characteristics of good barrier property, light-shielding property, glossiness, heat resistance, grease resistance, moisture resistance, waterproofness, air tightness, fragrance retention, composite adaptability and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is improved.
Specifically, in S10, the positioning cursor is printed on the front and back surfaces of the coding substrate by a gravure printing machine,
the printing length of the gravure printing machine per minute is less than or equal to 150 meters, and the drying temperature of the gravure printing machine is 40-80 ℃.
Specifically, the embodiment of the invention prints the positioning cursor on the substrate by using the intaglio printing machine, and performs coding according to the positioning cursor, thereby improving the accuracy of coding areas.
Specifically, in S20, the variable code is laser coded on the front and back surfaces of the first composite material by a laser coding machine,
the relation between the coding depth h1 of the laser coding machine and the thickness h2 of the aluminum foil 4 is 5-percent h2 less than or equal to h1 less than or equal to 15-percent h2, the coding length of the laser coding machine per second is 7000 micrometers, and the minimum line width of the laser coding machine is 0.2 millimeter.
Specifically, the embodiment of the invention uses the laser coding machine to code the base material, the laser coding process is nontoxic, and the safety of the composite material based on the internal-external corresponding variable code is improved.
Specifically, as shown in fig. 2, the variable codes on the front and back sides of the second composite material have a corresponding relationship, the variable codes include two-dimensional codes, one-dimensional codes and numbers, the variable code on the front side of the second composite material is an outer layer variable code 1, and the variable code on the back side of the second composite material is an inner layer variable code 2.
Specifically, in S30, the first film material is biaxially oriented polyester film 3.
Specifically, the biaxially oriented polyester film is used as the first film, and the biaxially oriented polyester film has the characteristics of good strength, rigidity, transparency, wear resistance, folding resistance, pinhole resistance, tear resistance and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is enlarged.
Specifically, in S30, the first film material is compounded on the front surface of the second composite material by a first dry compounding machine,
the first dry type compound machine is provided with a first scraper and a first anilox roller, the first scraper and the first anilox roller are matched to glue the front surface of the second compound material,
the first dry type compound machine is provided with a first camera device and a first central control module, the first camera device is used for monitoring thickness information of the third compound material,
the first central control module adjusts the actual contact pressure P of the first scraper and the first anilox roller according to the relation between the actual thickness D of the third composite material and the first preset thickness D0,
the length of each minute of the first dry type compound machine is less than or equal to 180 meters, the first dry type compound machine comprises a first drying box, a second drying box and a third drying box, the first drying box is connected with the second drying box and the first central control module, the second drying box is connected with the third drying box and the first central control module, the third drying box is connected with the first central control module, the position of the first camera device is arranged between the first anilox roller and the first drying box, the drying temperature range of the first drying box is 50-70 ℃, the drying temperature range of the second drying box is 60-80 ℃, and the drying temperature range of the third drying box is 70-90 ℃.
In particular, when the first central control module adjusts the actual contact pressure P of the first doctor blade and the first anilox roller according to the relation between the actual thickness D of the third composite material and a first preset thickness D0,
when D is smaller than 0.9 xD 0, the first central control module controls the first dry type compound machine to automatically stop and send out overhaul warning information,
when D is more than or equal to 0.9 multiplied by D0 and less than D0, the first central control module controls the actual contact pressure P of the first scraper and the first anilox roller to be reduced to P multiplied by D/D0,
when D0 is less than or equal to D and less than 1.1 xD 0, the first central control module controls the actual contact pressure P of the first scraper and the first anilox roller to be increased to P x D/D0,
when D is more than or equal to 1.1 xD 0, the first central control module controls the first dry type compound machine to automatically stop and send out overhaul warning information.
Specifically, in S40, as shown in fig. 2, the second film material is a polyethylene film 5.
Specifically, in S40, the second film material is compounded on the reverse side of the third composite material by a second dry compounding machine,
the reverse side of the third composite material is the side of the third composite material which does not contain the biaxially oriented polyester film 3,
in particular, the second dry type compound machine is provided with a second scraper and a second anilox roller, the second scraper and the second anilox roller are matched to glue the reverse side of the third compound material,
the second dry type compound machine is provided with a second camera device and a second central control module, the second camera device is used for monitoring the thickness information of the fourth compound material,
the second central control module adjusts the actual contact pressure P ' of the second scraper and the second anilox roller according to the relation between the actual thickness D ' of the fourth composite material and the second preset thickness D0',
the length of each minute of the second dry type compound machine is less than or equal to 150 meters, the second dry type compound machine comprises a fourth drying box, a fifth drying box and a sixth drying box, the fourth drying box is connected with the fifth drying box and the second central control module, the fifth drying box is connected with the sixth drying box and the second central control module, the sixth drying box is connected with the second central control module, the position of the second camera device is arranged between the second anilox roller and the forehead drying box, the drying temperature range of the fourth drying box is 50-70 ℃, the drying temperature range of the fifth drying box is 60-80 ℃, and the drying temperature range of the sixth drying box is 70-90 ℃.
In particular, when the second central control module adjusts the actual contact pressure P ' of the second doctor blade and the second anilox roller according to the relation between the actual thickness D ' of the fourth composite material and the second preset thickness D0',
when D '< 0.9XD0', the second central control module controls the second dry type compound machine to stop automatically and send out maintenance warning information,
when D ' is less than or equal to 0.9 xD 0' and less than D ' is less than D0', the second central control module controls the actual contact pressure P ' of the second scraper and the second anilox roller to be reduced to P ' xD/D0 ',
when D0 'is less than or equal to D' and less than 1.1 xD 0', the second central control module controls the actual contact pressure P' of the second scraper and the second anilox roller to be increased to P 'xD/D0',
and when D 'is more than or equal to 1.1 xD 0', the second central control module controls the second dry type compound machine to automatically stop and send out overhaul warning information.
Specifically, in S50, the curing of the fourth composite material is performed by a curing chamber, the temperature of the curing chamber ranges from 50 ℃ to 70 ℃, and the curing time of the fourth composite material is longer than or equal to 72 hours.
Example 2
Referring to fig. 3, the present invention provides a method for preparing a composite material based on an internal-external correspondence variable code, which includes:
s10, compounding the first coding base material and the second coding base material to obtain a compound base material;
s20, printing positioning cursors on the front and back sides of the composite coding substrate to obtain a first composite material;
s30, performing laser coding on the front side and the back side of the first composite material according to the positioning cursor to obtain a second composite material;
s40, compounding a first film material on the front surface of the second composite material to obtain a third composite material;
s50, compounding a second film material on the reverse side of the third composite material to obtain a fourth composite material;
s60, curing the fourth composite material to obtain a final composite material;
specifically, in S10, the first coding substrate is an aluminum foil 4 with a thickness of 10-150 micrometers, and the second coding substrate is a biaxially oriented polyamide film 6 with a thickness of 50-200 micrometers.
Specifically, in the embodiment of the invention, the aluminum foil is used as the base material, and the aluminum foil has the characteristics of good barrier property, light-shielding property, glossiness, heat resistance, grease resistance, moisture resistance, waterproofness, air tightness, fragrance retention, composite adaptability and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is improved.
Specifically, in S10, the first code printing base material and the second code printing base material are compounded by a first dry compounding machine,
the length of the first dry type compound machine compounded per minute is less than or equal to 170 meters, the first dry type compound machine comprises a first drying box, a second drying box and a third drying box, the drying temperature of the first drying box ranges from 50 ℃ to 70 ℃, the drying temperature of the second drying box ranges from 60 ℃ to 80 ℃, and the drying temperature of the third drying box ranges from 70 ℃ to 90 ℃.
Specifically, in S20, the positioning cursor is printed on the front and back surfaces of the composite coding substrate by a gravure printing machine,
the outer surface of the first coding substrate of the composite coding substrate is the front surface of the composite coding substrate, the outer surface of the second coding substrate of the composite coding substrate is the back surface of the composite coding substrate,
the printing length of the gravure printing machine per minute is less than or equal to 150 meters, and the drying temperature of the gravure printing machine is 40-80 ℃.
Specifically, the embodiment of the invention prints the positioning cursor on the substrate by using the intaglio printing machine, and performs coding according to the positioning cursor, thereby improving the accuracy of coding areas.
Specifically, in S30, the variable code is laser coded on the front and back surfaces of the first composite material by a laser coding machine,
as shown in fig. 2 and 3, the relation between the coding depth h3 of the laser coding machine on the aluminum foil 4 and the thickness h4 of the aluminum foil 4 is 5% x h4 less than or equal to h3 less than or equal to 15% x h4,
the relation between the coding depth h5 of the laser coding machine on the biaxially oriented polyamide film 6 and the thickness h6 of the biaxially oriented polyamide film 6 is 10 percent of x h6, h5 is less than or equal to 20 percent of x h6,
the code length of the laser code printer per second is 7000 micrometers, and the minimum linewidth of the laser code printer is 0.2 millimeter.
Specifically, the embodiment of the invention uses the laser coding machine to code the base material, the laser coding process is nontoxic, and the safety of the composite material based on the internal-external corresponding variable code is improved.
Specifically, referring to fig. 3, the variable codes on the front and back sides of the second composite material have a corresponding relationship, where the variable codes include two-dimensional codes, one-dimensional codes and numbers, the variable code on the front side of the second composite material is an outer variable code 1, and the variable code on the back side of the second composite material is an inner variable code 2.
Specifically, in S40, as shown in fig. 3, the first film material is biaxially oriented polyester film 3.
Specifically, the biaxially oriented polyester film is used as the first film, and the biaxially oriented polyester film has the characteristics of good strength, rigidity, transparency, wear resistance, folding resistance, pinhole resistance, tear resistance and the like, so that the application range of the composite material based on the internal and external corresponding variable codes is enlarged.
Specifically, in S40, the first film material is compounded on the front surface of the second composite material by a second dry compounding machine,
the outer surface of the first coding base material in the second composite material is the front surface of the second composite material, the outer surface of the second coding base material in the second composite material is the back surface of the second composite material,
the length of the second dry type compound machine compounded per minute is less than or equal to 180 meters, the second dry type compound machine comprises a fourth drying box, a fifth drying box and a sixth drying box, the drying temperature of the fourth drying box ranges from 50 ℃ to 70 ℃, the drying temperature of the fifth drying box ranges from 60 ℃ to 80 ℃, and the drying temperature of the sixth drying box ranges from 70 ℃ to 90 ℃.
Specifically, in S50, the second film material is a polyethylene film 5.
Specifically, in S50, the second film material is compounded on the reverse side of the third composite material by a third dry compounding machine,
the outer surface of the first coding base material in the third composite material is the front surface of the third composite material, the outer surface of the second coding base material in the third composite material is the back surface of the third composite material,
the length of the third dry type compound machine compounded per minute is less than or equal to 150 meters, the third dry type compound machine comprises a seventh drying box, an eighth drying box and a ninth drying box, the drying temperature range of the seventh drying box is 50-70 ℃, the drying temperature range of the eighth drying box is 60-80 ℃, and the drying temperature range of the ninth drying box is 70-90 ℃.
Specifically, in S60, the curing of the fourth composite material is performed by a curing chamber, the temperature of the curing chamber ranges from 50 ℃ to 70 ℃, and the curing time of the fourth composite material is longer than or equal to 72 hours.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The preparation method of the composite material based on the internal and external corresponding variable codes is characterized by comprising the following steps of:
if the code printing base material is a composite base material, the first code printing base material and the second code printing base material are compounded to obtain a composite code printing base material, and if the code printing base material is a single code printing base material, the code printing base material is not required to be compounded;
printing positioning cursors on the front side and the back side of a single coding substrate or a composite coding substrate to obtain a first composite material;
performing laser coding on the front and back sides of the first composite material according to the positioning cursor to obtain a second composite material;
a first film material is compounded on the front surface of the second composite material through a first dry type compounding machine to obtain a third composite material, the first dry type compounding machine is provided with a first scraper, a first anilox roller, a first camera device and a first central control module, the first central control module is connected with the first scraper to control the gap between the first scraper and the first anilox roller, the first central control module is connected with the first camera device to receive monitoring data of the first camera device, the monitoring data are thickness information of the third composite material, and the first central control module adjusts the actual contact pressure P of the first scraper and the first anilox roller according to the relation between the actual thickness D of the third composite material and a first preset thickness D0;
a second film material is compounded on the reverse side of the third composite material through a second dry type compounding machine to obtain a fourth composite material, the second dry type compounding machine is provided with a second scraper, a second anilox roller, a second camera device and a second central control module, the second central control module is connected with the second scraper to control the gap between the second scraper and the second anilox roller, the second central control module is connected with the second camera device to receive monitoring data of the second camera device, the monitoring data is thickness information of the fourth composite material, and the second central control module adjusts the actual contact pressure P ' of the second scraper and the second anilox roller according to the relation between the actual thickness D ' of the fourth composite material and a second preset thickness D0 ';
and curing the fourth composite material to obtain a final composite material.
2. The method for preparing a composite material based on internal and external variable codes according to claim 1, wherein when the first central control module adjusts the actual contact pressure P between the first doctor blade and the first anilox roller according to the relationship between the actual thickness D of the third composite material and a first preset thickness D0,
when D is smaller than k1 xD 0, the first central control module controls the first dry type compound machine to automatically stop and send out maintenance warning information, k1 is a first coefficient,
when k1×d0 is less than or equal to D < D0, the first central control module controls the actual contact pressure P of the first doctor blade and the first anilox roller to be reduced to p×d/D0,
when D0 is less than or equal to D and less than k2 xD 0, the first central control module controls the actual contact pressure P of the first scraper and the first anilox roller to be increased to P x D/D0, k2 is a second coefficient,
when D is more than or equal to k2 xD 0, the first central control module controls the first dry type compound machine to automatically stop and send out overhaul warning information.
3. The method for preparing a composite material based on internal and external variable codes according to claim 2, wherein when the second central control module adjusts the actual contact pressure P ' between the second doctor blade and the second anilox roller according to the relationship between the actual thickness D ' of the fourth composite material and a second preset thickness D0',
when D '< k3 xD 0', the second central control module controls the second dry type compound machine to stop automatically and send out maintenance warning information, k3 is a third coefficient,
when k3×d0 '. Ltoreq.d' < D0', the second center control module controls the actual contact pressure P' of the second doctor blade and the second anilox roller to be reduced to P '×d/D0',
when D0 'is less than or equal to D' and less than k4 multiplied by D0', the second central control module controls the actual contact pressure P' of the second scraper and the second anilox roller to be increased to P 'multiplied by D/D0', k4 is a fourth coefficient,
and when D 'is not less than k4 multiplied by D0', the second central control module controls the second dry type compound machine to automatically stop and send out overhaul warning information.
4. The method for preparing a composite material based on internal and external variable codes according to claim 3, wherein the first coding substrate and the single coding substrate are aluminum foils with thickness of 10-150 micrometers, the second coding substrate is a biaxially oriented polyamide film with thickness of 50-200 micrometers,
the method is characterized in that the positioning cursor is printed on the front side and the back side of a single code printing substrate or a composite code printing substrate through an intaglio printing machine, the printing length of each minute of the intaglio printing machine is less than or equal to 150 meters, and the drying temperature of the intaglio printing machine is 40-80 ℃.
5. The method for preparing the composite material based on the internal and external variable codes according to claim 4, wherein the laser coding is performed on the front side and the back side of the first composite material by a laser coding machine, the relation between the coding depth h1 of the single coding substrate and the thickness h2 of the single coding substrate is 5% -x h 2-15% -h 2, the coding length of the laser coding machine per second is 7000 micrometers, the minimum line width of the laser coding machine is 0.2 millimeter, the relation between the coding depth h3 of the laser coding machine on the first coding substrate and the thickness h4 of the first coding substrate is 5% -x h 4-15% -x h4, and the relation between the coding depth h5 of the laser coding machine on the biaxially oriented polyamide film and the thickness h6 of the biaxially oriented polyamide film is 10% -x 6% -h 5-20% -x 6.
6. The method for preparing a composite material based on internal and external variable codes according to claim 5, wherein the first film material is a biaxially oriented polyester film.
7. The method for preparing composite material based on internal and external variable codes according to claim 6, wherein the first film material is compounded on the front surface of the second composite material by a first dry compounding machine, the length compounded by the first dry compounding machine per minute is less than or equal to 180 meters, the first dry compounding machine comprises a first drying box, a second drying box and a third drying box, the first drying box is connected with the second drying box and the first central control module, the second drying box is connected with the third drying box and the first central control module, the third drying box is connected with the first central control module,
the first image pick-up device is arranged between the first anilox roller and the first drying oven, the drying temperature of the first drying oven ranges from 50 ℃ to 70 ℃, the drying temperature of the second drying oven ranges from 60 ℃ to 80 ℃, and the drying temperature of the third drying oven ranges from 70 ℃ to 90 ℃.
8. The method for preparing a composite material based on internal and external variable codes according to claim 7, wherein said second film material is a polyethylene film.
9. The method for preparing composite material based on internal and external variable codes according to claim 8, wherein the process of compounding a second film material on the back surface of the third composite material is performed by a second dry compounding machine, the back surface of the third composite material is a surface of the third composite material which does not contain the biaxially oriented polyester film, the length compounded per minute of the second dry compounding machine is less than or equal to 150 meters, the second dry compounding machine comprises a fourth drying box, a fifth drying box and a sixth drying box, the fourth drying box is connected with the fifth drying box and the second central control module, the fifth drying box is connected with the sixth drying box and the second central control module, the sixth drying box is connected with the second central control module, the position of the second camera device is arranged between the second reticulation roller and the fourth drying box,
the drying temperature of the fourth drying oven ranges from 50 ℃ to 70 ℃, the drying temperature of the fifth drying oven ranges from 60 ℃ to 80 ℃, and the drying temperature of the sixth drying oven ranges from 70 ℃ to 90 ℃.
10. The method for preparing the composite material based on the internal and external variable codes according to claim 9, wherein the fourth composite material is cured through a curing chamber, the temperature of the curing chamber ranges from 50 ℃ to 70 ℃, and the curing time of the fourth composite material is more than or equal to 72 hours.
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| CN109703151A (en) * | 2018-12-05 | 2019-05-03 | 湖北宏裕新型包材股份有限公司 | A kind of preparation method based on variable two-dimension code and identifying code aluminum foil openable cup lid packaging |
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| CN102902999A (en) * | 2012-10-17 | 2013-01-30 | 河南省卫群科技发展有限公司 | Color separation holographic variable two-dimensional code identification |
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