CN113427839A - Composite film bag and preparation method thereof - Google Patents
Composite film bag and preparation method thereof Download PDFInfo
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- CN113427839A CN113427839A CN202110985372.4A CN202110985372A CN113427839A CN 113427839 A CN113427839 A CN 113427839A CN 202110985372 A CN202110985372 A CN 202110985372A CN 113427839 A CN113427839 A CN 113427839A
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- composite film
- film bag
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Classifications
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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
- 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
- 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
- B32B27/36—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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
-
- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
- C09J163/10—Epoxy resins modified by unsaturated compounds
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/0028—Stretching, elongating
-
- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- 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
- B32B2439/02—Open containers
- B32B2439/06—Bags, sacks, sachets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
Abstract
The invention relates to a composite film bag and a preparation method thereof. According to the invention, through research on the adhesive used for compounding PE and PET, the adhesive is prepared by using 30-50 parts by weight of bisphenol A epoxy acrylate and 20-40 parts by weight of acrylic resin; the adhesive formed by 10-20 parts by weight of sodium alginate and 10-30 parts by weight of nano calcium carbonate can improve the composite strength of PE and PET, thereby further improving the tearing resistance and the fresh-keeping performance of the composite film bag.
Description
Technical Field
The invention relates to a packaging material, in particular to a composite film bag for food packaging and a preparation method thereof, and the composite film bag has high tearing strength.
Background
Ordinary PET belongs to crystalline polymers, and PET films generate a large degree of crystallization after being stretched and oriented, and if the PET films are subjected to heat sealing, shrinkage deformation is generated, so that the ordinary PET films do not have the heat sealing performance. At present, PET containers on the market generally achieve the effect of heat seal sealing through heat seal glue or EVA materials. The heat-sealing glue is adopted for heat-sealing, a heat-sealing glue material is coated on a base material to be processed into a heat-sealing coiled material, but the foreign matter risk is easy to occur in the using process, the offset printing residual condition exists when the sealing position of a sealing film is uncovered, or the residual glue of the heat-sealing coiled material falls off, so that the heat-sealing coiled material is unsafe to be used for food packaging; the EVA material (ethylene-vinyl acetate copolymer) is used as a heat-seal coiled material, the anti-sticking phenomenon is easy to occur when the temperature is higher than 30 ℃ in summer, the uncoiling is difficult to occur in the actual use process, and meanwhile, as the EVA is an acidic substance polyolefin material, a little smell exists, if the EVA is used as a food packaging material, the original smell of the contents can be influenced, and the experience feeling of consumers is reduced.
In the prior patent application CN110524991A of the applicant of the present application, a heat-sealing film roll is disclosed, which comprises a surface layer and a heat-sealing layer co-extruded from PE and PET, wherein the PE layer of the surface layer and the PE layer of the heat-sealing layer are compounded together by glue. The processing process flow comprises the following steps: the production flow of the heat sealing layer is as follows: firstly, extruding and molding a PE material and a PET material; secondly, compounding the PE film and the PET film which are extruded and formed simultaneously, stretching and cooling the PE film and the PET film together; thirdly, compounding the PE film and the PET film together; production flow of the surface layer: firstly, extruding and forming a surface layer material; secondly, stretching and cooling the extruded surface film; step three, rolling the stretched and cooled surface film; the compounding process of the heat sealing layer and the surface layer comprises the following steps: and compounding the heat-seal layer film and the surface layer film together, wherein the surface layer film is positioned above the PE film of the heat-seal layer film. The product provided by the invention has the advantages of simple structure, convenience in processing, no peculiar smell, tear resistance, easiness in uncovering and no foreign matter falling.
However, the tearing resistance of the heat-seal film coiled material still needs to be further improved, and the invention researches through the adhesive used for compounding the PE and the PET, finds that the specific adhesive can improve the compound strength of the PE and the PET, and further improves the tearing resistance of the compound film bag.
Disclosure of Invention
Based on the background technology, the technical problem to be solved by the invention is to provide a composite film bag which improves tearing resistance and is beneficial to improving food preservation effect. In order to realize the purpose of the invention, the following technical scheme is adopted:
the invention relates to a composite film bag, which comprises an outer layer formed by PET, an adhesive layer and an inner layer formed by PE, wherein the outer layer and the inner layer are directly attached through the adhesive layer, and the composite film bag is characterized in that the adhesive layer is prepared from the following components:
30-50 parts by weight of bisphenol A type epoxy acrylate;
20-40 parts of acrylic resin
10-20 parts of sodium alginate;
10-30 parts of nano calcium carbonate.
Experimental research proves that the composite film bag is beneficial to improving tearing resistance and food preservation effect. Although the principle is not well established, it is presumed that the acrylic resin partially reacts with nano calcium carbonate to form calcium ions, which form stronger interactions with sodium alginate, bisphenol a type epoxy acrylate, and PE and PET.
In a preferred embodiment of the invention, the thickness of the outer layer is 40-60 microns.
In a preferred embodiment of the invention, the thickness of the inner layer is 40-60 microns.
In a preferred embodiment of the invention, the thickness of the adhesive layer is 20 to 40 micrometers.
In a preferred embodiment of the invention, the solvent of the adhesive layer is water and no other components are included.
In a preferred embodiment of the present invention, the nano calcium carbonate has an average particle size of 80 to 120 nm. By controlling the particle size of the nano calcium carbonate, the uniform adhesive layer is formed, and the tearing resistance is improved.
The invention also relates to a preparation method of the composite film bag, which is characterized by comprising the following steps:
(1) putting the PE material into a PE screw extruder for extrusion molding, and putting the PET material into a PET screw extruder for extrusion molding;
(2) coating an adhesive on the PE film, and attaching the PET film to the adhesive layer;
(3) compounding the adhered PE film and PET film, co-stretching at 140-160 deg.c and cooling to form
A composite film bag.
In a preferred embodiment of the present invention, the preparation method further comprises printing a desired pattern on the surface layer of the PET film layer of the composite film pouch by a printing device.
The invention also relates to the application of the composite film bag, and the composite film bag is used for food preservation.
Advantageous effects
According to the invention, through research on the adhesive used for compounding PE and PET, the adhesive is prepared by using 30-50 parts by weight of bisphenol A epoxy acrylate and 20-40 parts by weight of acrylic resin; the adhesive formed by 10-20 parts by weight of sodium alginate and 10-30 parts by weight of nano calcium carbonate can improve the composite strength of PE and PET, thereby further improving the tearing resistance and the fresh-keeping performance of the composite film bag.
Detailed Description
In order to further understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless otherwise specified, the reagents involved in the examples of the present invention are all commercially available products, and all of them are commercially available.
Adhesive preparation example:
the adhesive is prepared according to the formula shown in the following table 1, the average grain diameter of the nano calcium carbonate is 100nm, and the preparation method comprises the following steps: mixing the raw materials according to the following ratio: 1 part of water: 2 parts by weight of the above-mentioned components were added to water, and the mixture was heated to 80 ℃ and kneaded for 30 minutes, thereby obtaining an adhesive.
Composite film bag preparation example:
(1) putting the PE material into a PE screw extruder for extrusion molding, and putting the PET material into a PET screw extruder for extrusion molding;
(2) coating the adhesive on a PE film according to the thickness of 100 micrometers, and attaching a PET film to the adhesive layer;
(3) compounding the attached PE film and the PET film together, stretching and cooling at 150 ℃ together to form a composite film bag with the thickness of the PE film and the thickness of the PET film both being 50 micrometers, and the adhesive layer being 25 micrometers;
(4) and printing a required pattern on the surface layer of the PET film layer of the composite film bag by a printing device.
Test examples:
the heat-sealing film coiled material produced by the process flow has strong tear resistance and no peculiar smell, and can effectively prolong the insurance time of food. The specific experimental data are as follows:
(1) right angle tear performance test
The test principle is as follows: the test specimen was subjected to a tensile load to tear the specimen at a right angle, and the tear load or tear strength of the specimen was measured.
The test method comprises the following steps: according to QB/T1130-:
the results of the tests show that the mean right angle tear strength in the transverse direction is about 15KN/m greater than that in the reference, and the difference in the longitudinal direction is about 10KN/m, improving tear resistance in both the transverse and longitudinal directions.
(2) Odor detection test, the test shows that no odor is generated in the preparation examples and the reference examples of the invention.
(3) Food preservation test
The food to be preserved is pretreated, washed clean, soaked in 10% saline solution for 30 minutes, then dried to remove water on the surface of the fresh food, and the two layers are sealed by using the composite film bag, and the test results are shown in the following table 3.
In conclusion, the composite film bag disclosed by the invention is tear-resistant and free of peculiar smell, and can greatly prolong the preservation time of food. The foregoing describes preferred embodiments of the present invention, but is not intended to limit the invention thereto. Modifications and variations of the embodiments disclosed herein may be made by those skilled in the art without departing from the scope and spirit of the invention.
Claims (9)
1. The utility model provides a composite film bag, its inlayer that includes the skin, adhesive layer and the PE that PET formed, wherein, direct laminating of adhesive layer is passed through to skin and inlayer, its characterized in that the adhesive layer is prepared by following constitution:
30-50 parts by weight of bisphenol A type epoxy acrylate;
20-40 parts of acrylic resin;
10-20 parts of sodium alginate;
10-30 parts of nano calcium carbonate.
2. The composite film bag of claim 1, said outer layer having a thickness of 40-60 microns.
3. The composite film bag of claim 1, said inner layer having a thickness of 40-60 microns.
4. The composite film bag of claim 1, said adhesive layer having a thickness of 20-40 microns.
5. The composite film bag of claim 1, wherein the solvent of the adhesive layer is water.
6. The composite film bag of claim 1, wherein the nano calcium carbonate has an average particle size of 80-120 nm.
7. The method of manufacturing a composite film bag according to any one of claims 1 to 6, characterized by comprising the steps of:
(1) putting the PE material into a PE screw extruder for extrusion molding, and putting the PET material into a PET screw extruder for extrusion molding;
(2) coating an adhesive on the PE film, and attaching the PET film to the adhesive layer;
(3) compounding the adhered PE film and PET film, co-stretching at 140-160 deg.c and cooling to form
A composite film bag.
8. The method of claim 7, further comprising printing a desired pattern on the surface layer on the PET film layer of the composite film pouch by a printing device.
9. Use of the composite film bag of any one of claims 1 to 6 for the preservation of food.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110985372.4A CN113427839A (en) | 2021-08-26 | 2021-08-26 | Composite film bag and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110985372.4A CN113427839A (en) | 2021-08-26 | 2021-08-26 | Composite film bag and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113427839A true CN113427839A (en) | 2021-09-24 |
Family
ID=77797991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110985372.4A Pending CN113427839A (en) | 2021-08-26 | 2021-08-26 | Composite film bag and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN113427839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132040A (en) * | 2021-12-09 | 2022-03-04 | 金石(天津)科技发展有限公司 | Composite film bag and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001201A (en) * | 2009-08-26 | 2011-04-06 | 富士胶片株式会社 | Laminate film and composite film |
| CN202368014U (en) * | 2011-12-28 | 2012-08-08 | 宁波瑞成包装材料有限公司 | Multilayer food packaging bag |
| CN103240934A (en) * | 2013-05-22 | 2013-08-14 | 四川汇利实业有限公司 | Composite film with high barrier property for steam and light |
| CN103660437A (en) * | 2013-12-05 | 2014-03-26 | 广东挚信彩印有限公司 | Nanometer impermeable boiling bag, and nano-binder and making method thereof |
| CN104039913A (en) * | 2011-11-02 | 2014-09-10 | 汉高知识产权控股有限责任公司 | Adhesive for electronic component |
| CN204076985U (en) * | 2014-06-30 | 2015-01-07 | 海宁市产品质量监督检验所 | One easily tears food package film |
| CN105620909A (en) * | 2014-10-31 | 2016-06-01 | 宜昌宏裕塑业有限责任公司 | Fresh-keeping packaging film for high-activity fresh yeast |
| CN205470464U (en) * | 2016-03-29 | 2016-08-17 | 浙江新长海新材料股份有限公司 | Food package bag with pearl effect |
| CN107206766A (en) * | 2015-02-10 | 2017-09-26 | 诺瓦化学品(国际)股份有限公司 | Laminar structure and by its obtained vertical bag |
| CN110091564A (en) * | 2019-04-15 | 2019-08-06 | 青岛周氏塑料包装有限公司 | A kind of complete biological 100% degradable composite membrane and its processing technology and application |
-
2021
- 2021-08-26 CN CN202110985372.4A patent/CN113427839A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001201A (en) * | 2009-08-26 | 2011-04-06 | 富士胶片株式会社 | Laminate film and composite film |
| CN104039913A (en) * | 2011-11-02 | 2014-09-10 | 汉高知识产权控股有限责任公司 | Adhesive for electronic component |
| CN202368014U (en) * | 2011-12-28 | 2012-08-08 | 宁波瑞成包装材料有限公司 | Multilayer food packaging bag |
| CN103240934A (en) * | 2013-05-22 | 2013-08-14 | 四川汇利实业有限公司 | Composite film with high barrier property for steam and light |
| CN103660437A (en) * | 2013-12-05 | 2014-03-26 | 广东挚信彩印有限公司 | Nanometer impermeable boiling bag, and nano-binder and making method thereof |
| CN204076985U (en) * | 2014-06-30 | 2015-01-07 | 海宁市产品质量监督检验所 | One easily tears food package film |
| CN105620909A (en) * | 2014-10-31 | 2016-06-01 | 宜昌宏裕塑业有限责任公司 | Fresh-keeping packaging film for high-activity fresh yeast |
| CN107206766A (en) * | 2015-02-10 | 2017-09-26 | 诺瓦化学品(国际)股份有限公司 | Laminar structure and by its obtained vertical bag |
| CN205470464U (en) * | 2016-03-29 | 2016-08-17 | 浙江新长海新材料股份有限公司 | Food package bag with pearl effect |
| CN110091564A (en) * | 2019-04-15 | 2019-08-06 | 青岛周氏塑料包装有限公司 | A kind of complete biological 100% degradable composite membrane and its processing technology and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114132040A (en) * | 2021-12-09 | 2022-03-04 | 金石(天津)科技发展有限公司 | Composite film bag and preparation method thereof |
| CN114132040B (en) * | 2021-12-09 | 2023-12-22 | 金石(天津)科技发展有限公司 | Composite film bag and preparation method thereof |
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