CN216579583U - Heat-resistant composite film - Google Patents
Heat-resistant composite film Download PDFInfo
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- CN216579583U CN216579583U CN202122680455.0U CN202122680455U CN216579583U CN 216579583 U CN216579583 U CN 216579583U CN 202122680455 U CN202122680455 U CN 202122680455U CN 216579583 U CN216579583 U CN 216579583U
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- film layer
- cpp
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- heat
- base film
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- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 85
- 239000004698 Polyethylene Substances 0.000 claims description 22
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 14
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 14
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 229920002799 BoPET Polymers 0.000 claims description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 abstract description 18
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract description 18
- 238000007789 sealing Methods 0.000 abstract description 7
- -1 Polypropylene Polymers 0.000 abstract description 5
- 239000004743 Polypropylene Substances 0.000 abstract description 3
- 239000012785 packaging film Substances 0.000 abstract description 3
- 229920006280 packaging film Polymers 0.000 abstract description 3
- 229920001155 polypropylene Polymers 0.000 abstract description 3
- 239000002985 plastic film Substances 0.000 abstract description 2
- 229920006255 plastic film Polymers 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 81
- 239000000203 mixture Substances 0.000 description 17
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 12
- 239000010409 thin film Substances 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 5
- 235000013305 food Nutrition 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013410 fast food Nutrition 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The application discloses a heat-resistant composite film, relates to the technical field of plastic films, and solves the problem that the existing packaging film is poor in heat resistance and heat sealing performance. The composite film comprises an EVA (ethylene-vinyl acetate copolymer) blending film layer, wherein a base film layer is bonded at the bottom of the EVA blending film layer, a CPP (chlorinated Polypropylene) film layer is bonded at the bottom of the base film layer, a first corrugated groove is uniformly formed in one side, close to the CPP film layer, of the base film layer, and a second corrugated groove is uniformly formed in one side, close to the base film layer, of the CPP film layer.
Description
Technical Field
The application relates to the technical field of plastic films, in particular to a heat-resistant composite film.
Background
Films made from polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins are used for packaging, and as film coatings. Plastic packages and plastic package products have a larger share in the market, and particularly, composite plastic flexible packages are widely applied to the fields of food, medicine, chemical industry and the like, wherein the proportion of the plastic packages is the largest, such as beverage packages, quick-frozen food packages, steamed and cooked food packages, fast food packages and the like, and the plastic packages and the plastic package products bring great convenience to the life of people.
The prior packaging film has poor heat resistance and heat sealing performance, and a sealing part is easy to be polluted and difficult to be applied to the packaging of high-temperature articles.
SUMMERY OF THE UTILITY MODEL
In order to improve the problem that the heat resistance and the heat sealing performance of the existing packaging film are poor, the application provides a heat-resistant composite film.
The application provides a heat-resisting complex film adopts following technical scheme:
a heat-resistant composite film comprises an EVA (ethylene vinyl acetate) blending film layer, wherein a base film layer is bonded at the bottom of the EVA blending film layer, a CPP (chlorinated polypropylene) film layer is bonded at the bottom of the base film layer, a first corrugated groove is uniformly formed in one side, close to the CPP film layer, of the base film layer, a second corrugated groove is uniformly formed in one side, close to the base film layer, of the CPP film layer, a PE (polyethylene) blending film layer is bonded at the bottom of the CPP film layer, and a LLDPE (linear low density polyethylene) film layer is bonded at one side, far away from the base film layer, of the PE blending film layer.
Optionally, a composite adhesive layer is bonded between the base film layer and the CPP film layer.
Optionally, the thickness of the EVA blend film layer is 0.02 mm.
Optionally, the base film layer is a PET film.
Optionally, the thickness of the PE blend film layer is 0.015 mm.
Optionally, the thickness of the base film layer is 0.025 mm.
Optionally, the thickness of the LLDPE film layer is 0.01 mm.
To sum up, the beneficial effect of this application is as follows:
1. this application is through setting up the setting of EVA blend film layer, PE blend film layer and LLDPE film layer, utilizes EVA blend film and PE blend film heat insulating ability and heat resistance to can effectively improve the heat-resisting effect of whole complex film with the compounding of basic film layer, utilize the good characteristics of the heat sealability of LLDPE film simultaneously, effectively improved the heat sealability of whole complex film, effectively reduced and sealed contaminated probability, in order to satisfy the packing demand of the higher product of temperature.
2. This application is close to through first ripple groove and the setting of second ripple groove, has effectively increased the CPP thin layer the superficial area of basic rete opposite side to improve the bite-force with compound gluing layer, thereby further improve the bonding strength who improves whole complex film, reduce the probability of layering in the use.
Drawings
FIG. 1 is a cross-sectional view of the overall construction of the present application;
FIG. 2 is a cross-sectional view of the present application of a base film layer and a CPP thin film layer structure.
Description of reference numerals: 1. an EVA blending film layer; 2. a base film layer; 3. compounding an adhesive layer; 4. a PE blended film layer; 5. a LLDPE film layer; 6. a CPP thin film layer; 7. a first corrugation groove; 8. a second corrugation groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
Referring to fig. 1, a heat-resistant composite film includes an EVA blend film layer 1, the thickness of the EVA blend film layer 1 is 0.02mm, and the heat resistance and toughness of the whole composite film can be effectively improved by using the advantages of good heat resistance and toughness of the EVA blend film, so as to meet the requirement of packaging a product with high temperature.
Referring to fig. 1, a base film layer 2 is bonded to the bottom of an EVA blend film layer 1, the base film layer 2 is a PET film, the thickness of the base film layer 2 is 0.025mm, and the strength and toughness of the entire film can be effectively improved by using the characteristics of the PET film, such as high toughness, high tensile strength, and high impact strength, so that the entire composite film is not easily torn.
Referring to fig. 1, a CPP thin film layer 6 is bonded to the bottom of a base film layer 2, the CPP thin film has good air tightness and oil resistance, and can effectively improve the air tightness and oil resistance of the whole composite film so as to package foods with high grease, a PE blend thin film layer 4 is bonded to the bottom of the CPP thin film layer 6, the thickness of the PE blend thin film layer 4 is 0.015mm, and the PE blend thin film layer 4 is an ethylene-vinyl acetate copolymer modified PE film.
Referring to fig. 1-2, a first corrugated groove 7 is uniformly formed on one side of the base film layer 2 close to the CPP film layer 6, a second corrugated groove 8 is uniformly formed on one side of the CPP film layer 6 close to the base film layer 2, a composite adhesive layer 3 is adhered between the base film layer 2 and the CPP film layer 6, the composite adhesive layer 3 is arranged to adhere and fix the base film layer 2 and the CPP film layer 6, so as to improve the adhesive strength of the whole composite film, and meanwhile, by arranging the first corrugated groove 7 and the second corrugated groove 8, the surface area of the CPP film layer 6 close to the opposite side of the base film layer 2 is effectively increased, so as to improve the biting force with the composite adhesive layer 3, so as to further improve the adhesive strength of the whole composite film, and the PE resin is modified by using the performance advantages of the ethylene-vinyl acetate copolymer, so as to reduce the crystallinity of the PE resin, thereby improving the flexibility of the PE blend film layer 4, Impact resistance and heat sealability, PE blend film layer 4 is kept away from one side of base film layer 2 and is bonded and have LLDPE film layer 5, the thickness of LLDPE film layer is 0.01mm, the heat sealability of LLDPE film is corresponding with the heat sealing temperature of complete melting, LLDPE heat sealing temperature is 10-15 ℃ higher than LDPE, and LLDPE is narrower than LDPE melting point range, so the heat sealability of film is good, consequently, can effectively improve the heat sealability of whole complex film, be convenient for seal the packing of product, reduce the contaminated probability of sealing after the product packing simultaneously.
The implementation principle of the application is as follows:
when this complex film is used, through selecting for use ethylene-vinyl acetate copolymer modified PE membrane, reduce the degree of crystallinity of PE resin, thereby the pliability of PE blend film layer 4 has been improved, shock resistance and heat sealability, utilize the good advantage of EVA blend film heat resistance and toughness, can effectively improve the heat resistance and the toughness of whole complex film, pack in order to satisfy the higher product of temperature, and utilize 5 good heat sealability of LLDPE film layer, make and seal more convenient firm to product packaging, thereby seal contaminated probability behind the reduction product packaging.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. A heat-resistant composite film comprises an EVA blending film layer (1), and is characterized in that: the EVA blending film layer is characterized in that a base film layer (2) is bonded to the bottom of the EVA blending film layer (1), a CPP film layer (6) is bonded to the bottom of the base film layer (2), a first corrugated groove (7) is uniformly formed in one side, close to the CPP film layer (6), of the base film layer (2), a second corrugated groove (8) is uniformly formed in one side, close to the base film layer (2), of the CPP film layer (6), a PE blending film layer (4) is bonded to the bottom of the CPP film layer (6), and a LLDPE film layer (5) is bonded to one side, far away from the base film layer (2), of the PE blending film layer (4).
2. A heat resistant composite film according to claim 1 wherein: and a composite adhesive layer (3) is bonded between the base film layer (2) and the CPP film layer (6).
3. A heat resistant composite film according to claim 1 wherein: the thickness of the EVA blending film layer (1) is 0.02 mm.
4. A heat resistant composite film according to claim 1 wherein: the base film layer (2) is a PET film.
5. A heat resistant composite film according to claim 1 wherein: the thickness of the PE blended film layer (4) is 0.015 mm.
6. A heat resistant composite film according to claim 3 wherein: the thickness of the base film layer (2) is 0.025 mm.
7. A heat resistant composite film according to claim 1 wherein: the thickness of the LLDPE film layer is 0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122680455.0U CN216579583U (en) | 2021-11-03 | 2021-11-03 | Heat-resistant composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122680455.0U CN216579583U (en) | 2021-11-03 | 2021-11-03 | Heat-resistant composite film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216579583U true CN216579583U (en) | 2022-05-24 |
Family
ID=81643757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122680455.0U Active CN216579583U (en) | 2021-11-03 | 2021-11-03 | Heat-resistant composite film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216579583U (en) |
-
2021
- 2021-11-03 CN CN202122680455.0U patent/CN216579583U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 Furong liangjiaqiao Industrial Park, Hengshanqiao Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Shunlong Hongyuan Technology Co.,Ltd. Address before: 213000 Furong liangjiaqiao Industrial Park, Hengshanqiao Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU SHUNLONG HONGYUAN PACKING Co.,Ltd. |