CN110626039A - Aluminum-plastic stretched coiled material convenient for online packaging and production method thereof - Google Patents

Aluminum-plastic stretched coiled material convenient for online packaging and production method thereof Download PDF

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Publication number
CN110626039A
CN110626039A CN201910993492.1A CN201910993492A CN110626039A CN 110626039 A CN110626039 A CN 110626039A CN 201910993492 A CN201910993492 A CN 201910993492A CN 110626039 A CN110626039 A CN 110626039A
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China
Prior art keywords
layer
packaging
aluminum
ink
printing ink
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CN201910993492.1A
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Chinese (zh)
Inventor
顾春明
杨伟
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JIANGYIN SUNRISE PACKAGING MATERIAL CO Ltd
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JIANGYIN SUNRISE PACKAGING MATERIAL CO Ltd
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Priority to CN201910993492.1A priority Critical patent/CN110626039A/en
Publication of CN110626039A publication Critical patent/CN110626039A/en
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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
    • 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
    • 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
    • B32B15/20—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
    • 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
    • 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
    • B32B27/34—Layered products comprising a layer 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates toThe utility model provides a tensile coiled material of plastic-aluminum convenient to online packaging, its characterized in that includes printing top layer, interior seal printing ink layer, barrier layer, nylon layer and anti-soil heat-seal layer from last to extremely down in proper order, directly bonds through the gluing agent between each layer, and the use amount of gluing agent is 3.8 ~ 4.2g/m2(ii) a Wherein: the printing surface layer is a BOPET film with the thickness of 12 mu m; the inner printing ink layer is ink; the barrier layer is Al and has a thickness of 9 μm; the nylon layer is a BOPA film, and the thickness is 15 mu m; the anti-pollution heat sealing layer is an RCPP film, and the thickness of the anti-pollution heat sealing layer is 60-90 mu m. The aluminum-plastic stretched coiled material convenient for online packaging has good punching depth performance, has higher barrier property after being punched, is convenient for online filling, and is suitable for packaging and processing small-package cooked food products such as dried tofu, chicken legs and the like; the antifouling heat sealing can be realized, and the reject ratio is greatly reduced by matching with the current continuous intelligent filling equipment; the automatic packaging of multichannel arrangement can be realized, the labor cost is saved, and the production efficiency can be greatly improved.

Description

Aluminum-plastic stretched coiled material convenient for online packaging and production method thereof
Technical Field
The invention relates to the technical field of food packaging films, in particular to an aluminum-plastic stretched coiled material convenient for online packaging and a production method thereof.
Background
The traditional pot-stewed snack packaging mode is that after an aluminum plastic film is made into a prefabricated bag, two production modes of manual filling and sealing or semi-automatic filling and sealing are matched, and the traditional method has the defects of low production efficiency and high labor cost.
The aluminum plastic film has better barrier property, and is usually used for packaging cooked food such as dried bean curds, chicken legs and the like. However, as the cooked food is usually packaged, the cooked food is packaged by filling in bags. When the sealing is carried out after filling, the sealing position is often wrinkled due to irregular shapes of the contents, and a false seal is formed at the sealing position.
Also, for example, chinese patent publication No. CN109649731A discloses a vacuum packaging bag with a built-in wet mask, wherein a side to be sealed is provided above a rectangular outer bag, and after the mask is placed inside the rectangular outer bag through an opening of the side to be sealed, a vacuum state is formed inside the rectangular outer bag, and the side to be sealed is subjected to a hot-pressing sealing operation to form a completely sealed side, thereby completing the vacuum packaging bag with the built-in wet mask. Although the shape of the mask is regular, the sealing effect is still affected by the position of the content during the production process.
In order to improve the packaging efficiency, it is desirable to provide an aluminum-plastic stretched coil material which is not only resistant to boiling but also suitable for on-line packaging of small-package cooked foods, and which is convenient for on-line packaging.
Disclosure of Invention
The invention aims to provide an aluminum-plastic stretched coiled material convenient for online packaging and a production method of the aluminum-plastic stretched coiled material convenient for online packaging.
In order to achieve the above object, a first aspect of the present invention provides an aluminum-plastic stretched coil material for on-line packaging, which is characterized by comprising, from top to bottom in sequenceThe printing surface layer, the inner printing ink layer, the barrier layer, the nylon layer and the anti-fouling heat sealing layer are directly bonded through an adhesive, and the using amount of the adhesive is 3.8-4.2 g/m2(ii) a Wherein:
the printing surface layer is a BOPET film with the thickness of 12 mu m;
the inner printing ink layer is ink, and the coating amount of ink is 2g/m2；
The barrier layer is Al;
the nylon layer is a BOPA film, and the thickness is 15 mu m;
the anti-pollution heat sealing layer is an RCPP film, and the thickness of the anti-pollution heat sealing layer is 60-90 mu m.
Preferably, the adhesive is high-temperature cooking adhesive.
Preferably, the RCPP film adopts a cooking grade above 121 ℃.
Preferably, the thickness of the aluminum foil is 9 μm or more.
The BOPET mentioned in the invention is a biaxially oriented polyester film produced by Xiamen Long-Plastic industry Co Ltd; the Al is an aluminum foil which is manufactured by Henan Ming Tai aluminum industry Limited and has the mark number of 8079, the ductility is high, and when the pit punching depth reaches 1cm, the ductility is still good; BOPA is a synchronous stretching nylon membrane produced by Japan Yougikuko; RCPP selects steaming RCPP with the temperature of over 121 ℃ produced by Hebei Tadao packaging material limited company; ink is the inner printing ink produced by Wulong printing ink factory in Wuxi city, and is added with the ink curing agent produced by Suzhou Zhongya printing ink company Limited; the tie selects SX-100 type high temperature resistant cooking adhesive produced by Jinan mountain star chemical Co.
Preferably, the ink comprises inner printing ink and an ink curing agent, and the mass ratio of the inner printing ink to the ink curing agent is (4-8).
The second aspect of the invention provides a production method of an aluminum-plastic stretched coiled material convenient for online packaging, which comprises the following steps:
s1) printing: spraying the inner printing ink on the surface of the printing surface layer through printing equipment to form an inner printing ink layer, and drying the inner printing ink layer;
s2) corona: carrying out double-sided corona treatment on the nylon layer;
s3) sizing: coating a layer of adhesive on one side of the printing surface layer/inner printing ink layer in the step S1, the nylon layer in the step S2 and the anti-fouling heat-sealing layer, wherein the adhesive of the printing surface layer/inner printing ink layer is coated on one side of the inner printing ink layer;
s4) compounding: pulling the glued layers in the step S3 to a compound machine, sequentially placing the glued layers according to the sequence of the printing surface layer/inner printing ink layer, the blocking layer, the nylon layer and the anti-fouling heat sealing layer, wherein one surface of the adhesive is placed between every two layers, compounding the layers through the compound machine to obtain an aluminum-plastic stretched coiled material, and rolling the coiled material;
s5) curing: curing the aluminum-plastic stretched coil compounded in the step S4;
s6) slitting: and (5) cutting the cured coiled material obtained in the step S5 according to the specification requirement, and then rolling again.
Preferably, the back printing ink layer in the step S1 comprises back printing ink and an ink curing agent, and the mass ratio of the back printing ink to the ink curing agent is 100 (4-8).
Preferably, the gluing amount of the adhesive in the step S3 is 3.8-4.2 g/m2。
Preferably, the curing temperature in the step S5 is 50-60 ℃, and the curing time is 96-48 hours.
The third aspect of the invention provides an online packaging method of an aluminum-plastic stretched coiled material convenient for online packaging, which comprises the following steps:
t1, pit punching: drawing the cut aluminum-plastic stretched coiled material to the online packaging equipment through a drawing mechanism, wherein the cut aluminum-plastic stretched coiled material is an upper packaging film and a lower packaging film respectively, and a pit punching die is selected according to the contents of the package to punch pits on the lower packaging film;
t2, composite: placing the contents to be packaged in the punching pits of the lower packaging film through online packaging equipment, and compounding the anti-fouling heat sealing layer of the upper packaging film and the anti-fouling heat sealing layer of the lower packaging film after direct hot pressing to finish the packaging of the contents;
t3, slitting: and (4) cutting and packaging the food packaged in the T2.
Compared with the prior art, the aluminum-plastic stretching composite coiled material convenient for online packaging and the production method thereof have the following advantages:
1. the aluminum-plastic stretched coiled material convenient for online packaging has good punching depth performance, has higher barrier property after being punched, is convenient for online filling, and is suitable for packaging and processing small-package cooked food products such as dried tofu, chicken legs and the like;
2. the invention provides an aluminum-plastic stretching coiled material convenient for online packaging, which can realize anti-pollution heat sealing and greatly reduce the reject ratio by matching with the current continuous intelligent filling equipment;
3. the invention provides the aluminum-plastic stretched coiled material convenient for online packaging, which can realize automatic packaging in multi-channel arrangement, not only save labor cost, but also greatly improve production efficiency.
Detailed Description
The present invention is further illustrated by the following specific embodiments and examples.
The RCPP film or RCPP mentioned in the invention refers to a retort type non-stretched polypropylene film.
The aluminum-plastic stretched coiled material convenient for online packaging sequentially comprises a printing surface layer, an inner printing ink layer, a barrier layer, a nylon layer and an anti-fouling heat sealing layer from top to bottom, wherein the layers are directly bonded through an adhesive, and the using amount of the adhesive is 3.8-4.2 g/m2(ii) a Wherein:
the printing surface layer is a BOPET film with the thickness of 12 mu m;
the inner printing ink layer is ink, and the coating amount of ink is 2g/m2；
The barrier layer is Al;
the nylon layer is a BOPA film, and the thickness is 15 mu m;
the anti-pollution heat sealing layer is an RCPP film, and the thickness of the anti-pollution heat sealing layer is 60-90 mu m.
Preferably, in order to facilitate the cooked food to be directly packaged after being processed, the amount of bacteria entering the package is reduced, the adhesive adopts high-temperature cooking glue, and the aluminum-plastic stretched coiled material cannot be layered under the action of high temperature, so that the packaging effect is influenced.
Preferably, the RCPP film chooses for use the level of cooking more than 121 ℃, can make the tensile coiled material of plastic-aluminum have anti-soil heat sealability on the one hand, on the other hand when anti-soil heat-seal layer receives high temperature, can not release harmful substance, does not influence and eat.
Preferably, the thickness of the aluminum foil is 9 μm or more.
The BOPET mentioned in the invention is a biaxially oriented polyester film produced by Xiamen Long-Plastic industry Co Ltd; the Al is an aluminum foil which is manufactured by Henan Ming Tai aluminum industry Limited and has the mark number of 8079, the ductility is high, and when the pit punching depth reaches 1cm, the ductility is still good; BOPA is a synchronous stretching nylon membrane produced by Japan Yougikuko; RCPP selects steaming RCPP with the temperature of over 121 ℃ produced by Hebei Tadao packaging material limited company; ink is inner printing ink produced by a Wulong printing ink factory in the Wuxi market, and an ink curing agent produced by Suzhou Zhongya printing ink company Limited is added, wherein the mass ratio of the inner printing ink to the ink curing agent is 100 (4-8); the tie selects SX-100 type high temperature resistant cooking adhesive produced by Jinan mountain star chemical Co. Other commercially available products can also meet the requirements of the present invention if their properties are similar to those of the products mentioned in the present invention.
The invention relates to a production method of an aluminum-plastic stretched coiled material convenient for online packaging, which comprises the following steps:
s1) printing: spraying the inner printing ink on the surface of the printing surface layer through printing equipment to form an inner printing ink layer, and drying the inner printing ink layer;
s2) corona: carrying out double-sided corona treatment on the nylon layer;
s3) sizing: coating a layer of adhesive on one side of the printing surface layer/inner printing ink layer in the step S1, the nylon layer in the step S2 and the anti-fouling heat-sealing layer, wherein the adhesive of the printing surface layer/inner printing ink layer is coated on one side of the inner printing ink layer;
s4) compounding: pulling the glued layers in the step S3 to a compound machine, sequentially placing the glued layers according to the sequence of the printing surface layer/inner printing ink layer, the blocking layer, the nylon layer and the anti-fouling heat sealing layer, wherein one surface of the adhesive is placed between every two layers, compounding the layers through the compound machine to obtain an aluminum-plastic stretched coiled material, and rolling the coiled material;
s5) curing: curing the aluminum-plastic stretched coil compounded in the step S4;
s6) slitting: and (5) cutting the cured coiled material obtained in the step S5 according to the specification requirement, and then rolling again.
Preferably, in order to improve the ink adhesion fastness, ink in the step S1 is composed of the back printing ink and the ink curing agent, and the mass ratio of the back printing ink to the ink curing agent is 100 (4-8).
Preferably, the gluing amount of the adhesive in the step S3 is 3.8-4.2 g/m2。
Preferably, the curing temperature in the step 5 is 50-60 ℃, and the curing time is 96-48 hours.
The online packaging method of the aluminum plastic stretching coiled material comprises the following steps:
t1, pit punching: drawing the cut aluminum-plastic stretched coiled material to the online packaging equipment through a drawing mechanism, wherein the cut aluminum-plastic stretched coiled material is an upper packaging film and a lower packaging film respectively, and a pit punching die is selected according to the contents of the package to punch pits on the lower packaging film;
t2, composite: placing the contents to be packaged in the punching pits of the lower packaging film through online packaging equipment, and compounding the anti-fouling heat sealing layer of the upper packaging film and the anti-fouling heat sealing layer of the lower packaging film after direct hot pressing to finish the packaging of the contents;
t3, slitting: and (4) cutting and packaging the food packaged in the T2.
The following are specific embodiments of the present invention, and it should be understood that the specific embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
Example 1
The specific structure of the tensile coiled material of plastic-aluminum in this embodiment is: the ink-jet printing ink comprises BOPET (biaxially oriented polyethylene terephthalate)/ink/tie/Al/tie/BOPA (polyamide)/tie/RCPP (resin coated polypropylene), wherein the BOPET forms a surface layer, the ink is an inner printing ink layer, the Al forms a barrier layer, the BOPA forms a nylon layer, the RCPP is an anti-pollution heat sealing layer, the layers are connected through an adhesive, and the using amount of the adhesive is 3.8-4.2 g/m2(ii) a The thickness of each layer is 12 μm on the surface layer, the barrier layer is 9 μm, the nylon layer is 15 μm, and the antipollution heat sealing layer is 60 μm, wherein:
BOPET selects a biaxially oriented polyester film produced by Xiamen Long-plastic industry Co Ltd;
al is selected from aluminum foil with a mark number of 8079 produced by Henan Ming Tai aluminum industry Co., Ltd;
BOPA is a synchronous stretching nylon membrane produced by Japan Yougikuko;
RCPP selects steaming RCPP with the temperature of over 121 ℃ produced by Hebei Tadao packaging material limited company;
the coating amount of ink was 2g/m2(ii) a ink is selected from inner printing ink produced by Wuxi Longyin ink factory, and an ink curing agent is added, wherein the mass ratio of the inner printing ink to the ink curing agent is 100: 4;
the tie selects SX-100 type high temperature resistant cooking adhesive produced by Jinan mountain star chemical Co.
The specific production method of the aluminum-plastic stretched coil convenient for online packaging is as follows:
s1) printing: spraying ink on the surface of BOPET through printing equipment, and airing;
s2) corona: carrying out double-sided corona treatment on the BOPA;
s3) sizing: coating a layer of adhesive on one surface of the dried BOPET/ink, BOPA and RCPP, wherein the gluing amount of the adhesive is 3.8-4.2 g/m2Wherein the adhesive of BOPET is coated on one side surface of ink;
s4) compounding: drawing the glued layers in the step S3 to a compound machine, and sequentially putting the glued layers according to the sequence of BOPET/ink, Al, BOPA and RCPP, wherein one surface of the adhesive is arranged between every two layers, compounding the layers by the compound machine to obtain an aluminum-plastic stretched coil, and rolling the aluminum-plastic stretched coil;
s5) curing: curing the aluminum-plastic stretched coil compounded in the step S4 in an environment with the temperature of 50 ℃ for 96 hours until the adhesive completely reacts;
s6) slitting: and (5) cutting the cured coiled material obtained in the step S5 according to the specification requirement, and then rolling again.
In order to improve the ink adhesion fastness, ink in the step S1 is composed of the back printing ink and the ink curing agent, and the mass ratio of the back printing ink to the ink curing agent is 100: 4.
The online packaging method of the aluminum-plastic stretched coil material of the embodiment is as follows:
t1, pit punching: drawing the cut aluminum-plastic stretched coiled material to the online packaging equipment through a drawing mechanism, wherein the cut aluminum-plastic stretched coiled material is an upper packaging film and a lower packaging film respectively, and a pit punching die is selected according to the contents of the package to punch pits on the lower packaging film;
t2, composite: the contents to be packaged are placed in the punching pits of the lower packaging film through an online packaging device, and the anti-fouling heat sealing layer of the upper packaging film and the anti-fouling heat sealing layer of the lower packaging film are directly hot-pressed and then compounded to complete the packaging of the contents;
t3, slitting: and (4) cutting the packaged food in the T2, and packaging.
Example 2
The specific structure of the aluminum-plastic stretched coil in this embodiment is the same as that in embodiment 1, except that the amount of the adhesive used is 4g/m2(ii) a The thickness of the barrier layer is 10 mu m, and the thickness of the anti-pollution heat sealing layer is 70 mu m; the mass ratio of the inner printing ink to the ink curing agent is 100: 6.
The specific production method of the aluminum-plastic stretched coil convenient for on-line packaging in the embodiment is the same as that in the embodiment 1, and the difference is that the mass ratio of the ink and the ink curing agent in the step S1 is 100: 6; the gluing amount of the adhesive in the step S3 is 4g/m2(ii) a In step S5, the aging temperature is 60 ℃ and the aging time is 72 hours.
The method for packaging the aluminum-plastic stretched coil in-line in this example was the same as in example 1.
Example 3
The specific structure of the aluminum-plastic stretched coil in this embodiment is the same as that in embodiment 1, except that the amount of the adhesive used is 4.2g/m2(ii) a The thickness of the barrier layer is 15 mu m, and the thickness of the anti-pollution heat sealing layer is 90 mu m; the mass ratio of the inner printing ink to the ink curing agent is 100: 8.
The specific production method of the aluminum-plastic stretched coil convenient for on-line packaging in this embodiment is the same as that in embodiment 1, except that the quality of the ink and the ink curing agent printed in the step S1The quantity ratio is 100: 8; the gluing amount of the adhesive in the step S3 is 4.2g/m2(ii) a In step S5, the aging temperature is 70 ℃ and the aging time is 48 hours.
The method for packaging the aluminum-plastic stretched coil in-line in this example was the same as in example 1.
Comparative example 1
The structure of the aluminum-plastic stretched coil of this comparative example is the same as that of example 1, except that: CPP is selected as the anti-pollution heat sealing layer.
The production method of the aluminum-plastic stretched coil of the comparative example is the same as that of example 1, except that: in step S5, the aging temperature is 50 ℃ and the aging time is 72 hours.
Test method and test results:
the aluminum-plastic tensile coiled materials prepared in the examples 1 to 3 and the comparative examples 1 to 2 are tested by the following test method, and the test results are shown in table 1:
(1) peel strength: testing the peel strength between BOPET and Al, between BOPA and Al and between BOPA and RCPP according to GB/T8808 and 1988, peeling test method for soft composite plastic materials;
the first peel strength is between BOPET and Al, and the product is qualified when the first peel strength is more than or equal to 2.5N/15 mm; otherwise, the product is unqualified;
a second peeling strength is formed between the BOPA and the Al, and the BOPA is qualified when the second peeling strength is more than or equal to 3N/15 mm; otherwise, the product is unqualified;
a first peel strength is formed between the BOPA and the RCPP, and the BOPA is qualified when the first peel strength is more than or equal to 4N/15 mm; otherwise, the product is not qualified.
(2) Elongation at break: according to the test of GB13022-91 'test method for tensile property of plastic film', when the MD is more than 70%, the film is qualified; otherwise, the product is unqualified; when the TD is more than 70%, the product is qualified, otherwise, the product is unqualified.
(3) Heat sealability: and (3) taking 2 aluminum-plastic stretched coils of 10cm by 10cm, aligning the anti-pollution heat sealing layers, carrying out hot pressing, cooling, and carrying out heat sealing test at the heat sealing temperature of 190 +/-10 ℃ according to GB/T2358-98 method for testing the heat sealing strength of plastic film packaging bags. The judgment standard of the anti-pollution test is as follows: when the heat seal strength of the film is more than or equal to 15N/15mm, the film is qualified; when the heat seal strength is less than 15N/15mm, the sheet is not qualified.
(4) Anti-fouling heat sealability: taking 2 10 cm-by-10 cm aluminum-plastic stretched coils, dripping 1 drop of edible oil on the anti-pollution heat sealing layer of one aluminum-plastic stretched coil, aligning the anti-pollution heat sealing layers of the 2 aluminum-plastic stretched coils, carrying out hot pressing, and carrying out heat sealing under the condition that the heat sealing temperature is 190 +/-10 ℃ according to GB/T2358-98 Heat sealing Strength test method for plastic film packaging bags. The judgment standard of the anti-pollution test is as follows: when the heat seal strength of the film is more than or equal to 15N/15mm, the film is qualified; when the heat seal strength is less than 15N/15mm, the sheet is not qualified.
TABLE 1
From the above table, in the production process of the aluminum-plastic stretched coil, through complete curing, the aluminum-plastic stretched coil convenient for online packaging has higher peel strength between layers, so that the punching depth performance of the coil is improved, the coil after punching is ensured to have higher barrier property, the online filling is convenient, and the aluminum-plastic stretched coil is suitable for the packaging and processing of small-package cooked food products such as dried tofu, chicken legs and the like.
The aluminum-plastic stretched coiled material convenient for online packaging can realize anti-pollution heat sealing, and is matched with the existing continuously intelligent filling equipment, so that the reject ratio is greatly reduced; the automatic packaging of multichannel arrangement can be realized, the labor cost is saved, and the production efficiency can be greatly improved.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is intended to cover various modifications, equivalents and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. Is convenient to be on-lineThe aluminum-plastic stretching coiled material for packaging is characterized by comprising a printing surface layer, an inner printing ink layer, a blocking layer, a nylon layer and an anti-fouling heat sealing layer from top to bottom in sequence, wherein the layers are directly bonded through an adhesive, and the using amount of the adhesive is 3.8-4.2 g/m2(ii) a Wherein:
the printing surface layer is a BOPET film with the thickness of 12 mu m;
the inner printing ink layer is ink, and the coating amount of ink is 2g/m2；
The barrier layer is Al;
the nylon layer is a BOPA film, and the thickness is 15 mu m;
the anti-pollution heat sealing layer is an RCPP film, and the thickness of the anti-pollution heat sealing layer is 60-90 mu m.
2. The aluminum-plastic stretched coil convenient for on-line packaging as claimed in claim 1, wherein the adhesive is high temperature cooking glue.
3. The aluminum-plastic stretched coil convenient for online packaging as claimed in claim 2, wherein the RCPP film is selected from a cooking grade above 121 ℃.
4. The aluminum-plastic stretched coil material convenient for in-line packaging as claimed in claim 1, wherein the aluminum foil has a thickness of 9 μm or more.
5. The aluminum-plastic stretched coil convenient for online packaging as claimed in claim 1, wherein the ink comprises an inner printing ink and an ink curing agent, and the mass ratio of the inner printing ink to the ink curing agent is 100 (4-8).
6. A method for producing the aluminum-plastic stretched coiled material convenient for on-line packaging as claimed in any one of claims 1 to 5, is characterized by comprising the following steps:
s1) printing: spraying the inner printing ink on the surface of the printing surface layer through printing equipment to form an inner printing ink layer, and drying the inner printing ink layer;
s2) corona: carrying out double-sided corona treatment on the nylon layer;
s3) sizing: coating a layer of adhesive on one side of the printing surface layer/inner printing ink layer in the step S1, the nylon layer in the step S2 and the anti-fouling heat-sealing layer, wherein the adhesive of the printing surface layer/inner printing ink layer is coated on one side of the inner printing ink layer;
s4) compounding: pulling the glued layers in the step S3 to a compound machine, sequentially placing the glued layers according to the sequence of the printing surface layer/inner printing ink layer, the blocking layer, the nylon layer and the anti-fouling heat sealing layer, wherein one surface of the adhesive is placed between every two layers, compounding the layers through the compound machine to obtain an aluminum-plastic stretched coiled material, and rolling the coiled material;
s5) curing: curing the aluminum-plastic stretched coil compounded in the step S4;
s6) slitting: and (5) cutting the cured coiled material obtained in the step S5 according to the specification requirement, and then rolling again.
7. The production method of the aluminum-plastic stretched coil convenient for online packaging as claimed in claim 6, wherein the inner printing ink layer in the step S1 comprises inner printing ink and an ink curing agent, and the mass ratio of the inner printing ink to the ink curing agent is 100 (4-8).
8. The method for producing the aluminum-plastic stretched coil convenient for on-line packaging as claimed in claim 7, wherein the gluing amount of the adhesive in the step S3 is 3.8-4.2 g/m2。
9. The method for producing the aluminum-plastic stretched coil convenient for the on-line packaging as claimed in claim 6, wherein the curing temperature in the step S5 is 50-70 ℃ and the curing time is 96-48 hours.
10. An on-line packaging method of the aluminum plastic stretching coiled material convenient for on-line packaging as claimed in any one of claims 1 to 5, comprising the following steps:
t1, pit punching: drawing the cut aluminum-plastic stretched coiled material to the online packaging equipment through a drawing mechanism, wherein the cut aluminum-plastic stretched coiled material is an upper packaging film and a lower packaging film respectively, and a pit punching die is selected according to the contents of the package to punch pits on the lower packaging film;
t2, composite: placing the contents to be packaged in the punching pits of the lower packaging film through online packaging equipment, and compounding the anti-fouling heat sealing layer of the upper packaging film and the anti-fouling heat sealing layer of the lower packaging film after direct hot pressing to finish the packaging of the contents;
t3, slitting: and (4) cutting and packaging the food packaged in the T2.
CN201910993492.1A 2019-10-18 2019-10-18 Aluminum-plastic stretched coiled material convenient for online packaging and production method thereof Pending CN110626039A (en)

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CN202895814U (en) * 2012-08-09 2013-04-24 海宁市粤海彩印有限公司 Food package composite film
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