CN104130507A - Anti-fog plastic film - Google Patents
Anti-fog plastic film Download PDFInfo
- Publication number
- CN104130507A CN104130507A CN201410356638.9A CN201410356638A CN104130507A CN 104130507 A CN104130507 A CN 104130507A CN 201410356638 A CN201410356638 A CN 201410356638A CN 104130507 A CN104130507 A CN 104130507A
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- parts
- antifogging
- plastic film
- agent
- fog
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- Pending
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- 239000002985 plastic film Substances 0.000 title claims abstract description 37
- 229920006255 plastic film Polymers 0.000 title claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 48
- 229920001577 copolymer Polymers 0.000 claims abstract description 22
- 229920000098 polyolefin Polymers 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 14
- 239000002981 blocking agent Substances 0.000 claims description 32
- 235000013305 food Nutrition 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000005025 cast polypropylene Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 210000004379 membrane Anatomy 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 210000002469 basement membrane Anatomy 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000012660 binary copolymerization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000015895 biscuits Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009512 pharmaceutical packaging Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000012747 synergistic agent Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
- C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/223—Packed additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Laminated Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention provides an anti-fog plastic film, which belongs to the technical field of plastic films. The anti-fog plastic film comprises the following raw materials by weight: 94 to 98 parts of a polyolefin copolymer, 1 to 3 parts of a concentrated anti-adhesion agent and 1 to 3 parts of an anti-fog agent. The polyolefin copolymer comprises the following raw materials by weight: 83 to 90 parts of an ethylene-propylene copolymer and 10 to 17 parts of a propylene-butylene copolymer. The thickness of the anti-fog plastic film is 3 to 24 mu m. The concentrated anti-adhesion agent is AB6001PP, and the anti-fog agent AF0238PP. The concentrated anti-adhesion agent and the anti-fog agent are added in the form of master batch. According to the invention, adhesion between film layers of the anti-fog plastic film hardly happens, and the anti-fog plastic film has a good anti-fog effect and is beneficial for preservation of food.
Description
Technical field
The present invention relates to plastics film technical field, particularly a kind of antifogging plastic film.
Background technology
CPP film, cast polypropylene film cast polypropylene, also claims un-stretched polypropylene film, and cost is lower, and output is higher.CPP film is higher than PE stiffness of thin film, and aqueous vapor and peculiar smell barrier are good, can be used as matrix material basement membrane, can carry out metalized, as food and commodity packaging and outer packaging, has good illustrative, can make product still high-visible under packing.CPP film, through printing, bag, is applicable to: composite membrane, comprises clothes, tricot and flower packaging bag, file and photograph album film, food product pack; Aluminium plating film, the metallized film of barrier package and decoration, for the top grade packing of tealeaves, fried delicious and crisp food, biscuit etc.; Boiling film, is applied to the fields such as hot filling, pressure pad, sterile packed; Functional membrane, for food casing, candy outer packaging, drug packaging, replaces PVC, synthetic paper, Pressure sensitive adhesive tape, cards folder, annulus folder and Vertical-bag matrix material in fields such as photograph album, folder and files.CPP film is widely used in food product pack, the article such as food, vegetables, fruit are put in refrigerator after wrapping with preservative film, because the air being enclosed within packing is cooled, airborne water vapour can not be all in gas phase state, be that air is saturated by water vapour, water vapour is just condensed into little dispersion water droplet at film surface, thereby has formed water smoke at film surface.The surface tension of water is 72mJ/m
2, polyacrylic surface tension is 30mJ/m
2, the two surface tension is different, so that water droplet can not disperse film is uniformly moistening, thereby has formed the drop disperseing, namely water smoke.After mist formation, be difficult for the clear content of seeing in packing, the content aesthetic feeling in packing reduced, more likely severe exacerbation quality product.
The patent No. is that 200810244354.5 national inventing patent discloses a kind of antifog thin film for food packaging, it is characterized in that anti-fog thin film adopts the mode of production of inner additive type, transfer molding antifogging agent is directly added in material resin when preparing burden, anti-fog thin film adopts the mode of production of coextrusion mold to form three-decker, three-decker is to take transparent thin film layer as middle layer, and inside and outside both sides are set to respectively inner side anti-fog layer and outside anti-fog layer; Inner side anti-fog layer and outside anti-fog layer are all that to take ethylene-propylene binary copolymerization polypropylene or ethylene-propylene-butylene ternary polymerized polypropylene be material, in it, be added with migration-type antifogging agent, this anti-fog thin film has bilateral anti-fog function, anti-fog effect is durable by force, difficult is washed away or is wiped.But this film production process is complicated, and cost is high.
The patent No. is that 201210284437.3 national inventing patent discloses a kind of antifog polyester film and preparation method thereof, and antifog polyester film comprises polyester base material, and described base material both sides are provided with anti-fog function layer; Described polyester base material is pure polyester layer, and described anti-fog function layer material is the polyester slice of 100 parts, the antifogging agent of 0.5-2.0 part, the synergistic agent of 0.1-0.5 part.The transparency of this film is better, has better machining property, and thinner thickness, Heat stability is good, and antifog property is good, can under hot and humid environment, apply, but the easy adhesion between rete, impact is used.
Summary of the invention
The object of this invention is to provide a kind of antifogging plastic film, not only between rete, have the adhesion of being difficult for, and good antifogging effect, be beneficial to food and preserve.
The technical solution adopted for the present invention to solve the technical problems is:
An antifogging plastic film, the raw material that described antifogging plastic film comprises following weight parts: 94～98 parts of polyolefin copolymers, 1～3 part of concentrated anti blocking agent, 1～3 part of antifogging agent; The raw material that described polyolefin copolymer comprises following weight parts: 83～90 parts of ethylene propylene copolymers, 0～17 part of propylene butene copolymer 1; The thickness of described antifogging plastic film is 3～24 microns.Described concentrated anti blocking agent and antifogging agent all add with master batch form.Add concentrated anti blocking agent master batch can make film volume have between layers air, prevent adhesion, easy to use.Add antifogging agent master batch, antifogging agent can precipitate into film surface, plays anti-fog effect.
Further, described concentrated anti blocking agent is AB6001PP.
Further, described antifogging agent is AF0238PP.
Compared to the prior art the present invention, has the following advantages and effect: the composition of a kind of antifogging plastic film of the present invention is simple, and cost is low.Add concentrated anti blocking agent can make film volume have between layers air, prevent adhesion, easy to use.Add antifogging agent master batch, antifogging agent can precipitate into film surface, plays anti-fog effect.After adding antifogging agent, on the one hand, because polarity is different, antifogging agent can precipitate into film surface, when antifogging agent moves to film surface, just gives film surface certain polarity; On the other hand, antifogging agent is dissolved in water droplet, the surface tension of water droplet is declined, antifogging agent has dwindled the gap between polypropylene and water surface tension, finally make both surface can substantially equate that contact angle between such water droplet and film will continue to reduce until be zero, thereby play antifog effect.A kind of antifogging plastic film of the present invention not only has the adhesion of being difficult between rete, and good antifogging effect, is beneficial to food and preserves.
Embodiment
Below by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment 1
The raw material that this antifogging plastic film comprises following weight parts: 94 parts of polyolefin copolymers, 1.2 parts of concentrated anti blocking agents, 2 parts of antifogging agents.
The raw material that polyolefin copolymer comprises following weight parts: 83 parts of ethylene propylene copolymers, 7 parts of propylene butene copolymer 1s.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 3 microns.
Embodiment 2
The raw material that this antifogging plastic film comprises following weight parts: 95.6 parts of polyolefin copolymers, 1 part of concentrated anti blocking agent, 1 part of antifogging agent.
The raw material that polyolefin copolymer comprises following weight parts: 85 parts of ethylene propylene copolymers, 5 parts of propylene butene copolymer 1s.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 7.2 microns.
Embodiment 3
The raw material that this antifogging plastic film comprises following weight parts: 96.2 parts of polyolefin copolymers, 1.5 parts of concentrated anti blocking agents, 2 parts of antifogging agents.
The raw material that polyolefin copolymer comprises following weight parts: 86.5 parts of ethylene propylene copolymers, 3.5 parts of propylene butene copolymer 1s.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 12 microns.
Embodiment 4
The raw material that this antifogging plastic film comprises following weight parts: 97 parts of polyolefin copolymers, 3 parts of concentrated anti blocking agents, 2 parts of antifogging agents.
The raw material that polyolefin copolymer comprises following weight parts: 88 parts of ethylene propylene copolymers, 2 parts of propylene butene copolymer 1s.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 16 microns.
Embodiment 5
The raw material that this antifogging plastic film comprises following weight parts: 97.2 parts of polyolefin copolymers, 2.5 parts of concentrated anti blocking agents, 3 parts of antifogging agents.
The raw material that polyolefin copolymer comprises following weight parts: 90 parts of ethylene propylene copolymers, 0 part of propylene butene copolymer 1.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 20 microns.
Embodiment 6
The raw material that this antifogging plastic film comprises following weight parts: 98 parts of polyolefin copolymers, 3 parts of concentrated anti blocking agents, 1.7 parts of antifogging agents.
The raw material that polyolefin copolymer comprises following weight parts: 90 parts of ethylene propylene copolymers, 5 parts of propylene butene copolymer 1s.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 24 microns.
Embodiment 7
The raw material that this antifogging plastic film comprises following weight parts: 95 parts of polyolefin copolymers, 2.1 parts of concentrated anti blocking agents, 1.6 parts of antifogging agents.
The raw material that polyolefin copolymer comprises following weight parts: 85 parts of ethylene propylene copolymers, 3 parts of propylene butene copolymer 1s.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 22 microns.
Embodiment 8
The raw material that this antifogging plastic film comprises following weight parts: 94.2 parts of polyolefin copolymers, 1.1 parts of concentrated anti blocking agents, 3 parts of antifogging agents.
The raw material that polyolefin copolymer comprises following weight parts: 86.4 parts of ethylene propylene copolymers, 4 parts of propylene butene copolymer 1s.
Concentrated anti blocking agent is AB6001PP.
Antifogging agent is AF0238PP.
Concentrated anti blocking agent and antifogging agent all add with master batch form, and the thickness of antifogging plastic film is 16 microns.
Above content described in this specification sheets is only made for the present invention illustrating.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment; only otherwise depart from the content of specification sheets of the present invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (4)
1. an antifogging plastic film, is characterized in that: the raw material that described antifogging plastic film comprises following weight parts: 94～98 parts of polyolefin copolymers, 1～3 part of concentrated anti blocking agent, 1～3 part of antifogging agent; The raw material that described polyolefin copolymer comprises following weight parts: 83～90 parts of ethylene propylene copolymers, 0～17 part of propylene butene copolymer 1; The thickness of described antifogging plastic film is 3～24 microns.
2. a kind of antifogging plastic film according to claim 1, is characterized in that: described concentrated anti blocking agent is AB6001PP.
3. a kind of antifogging plastic film according to claim 1, is characterized in that: described antifogging agent is AF0238PP.
4. a kind of antifogging plastic film according to claim 1, is characterized in that: described concentrated anti blocking agent and antifogging agent all add with master batch form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356638.9A CN104130507A (en) | 2014-07-25 | 2014-07-25 | Anti-fog plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356638.9A CN104130507A (en) | 2014-07-25 | 2014-07-25 | Anti-fog plastic film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104130507A true CN104130507A (en) | 2014-11-05 |
Family
ID=51803376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410356638.9A Pending CN104130507A (en) | 2014-07-25 | 2014-07-25 | Anti-fog plastic film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104130507A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106113839A (en) * | 2016-07-15 | 2016-11-16 | 黄山永新股份有限公司 | A kind of fruit and vegerable salad packaging composite film and production technology thereof |
| CN112046108A (en) * | 2020-08-31 | 2020-12-08 | 广东鼎孚新材料科技有限公司 | Fresh food keeps fresh and uses ventilative bag |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003874A2 (en) * | 2002-06-26 | 2004-01-08 | Avery Dennison Corporation | Oriented films comprising polypropylene / olefin elastomer blends |
| CN101024318A (en) * | 2006-01-31 | 2007-08-29 | 东洋纺织株式会社 | Polypropylene resin laminated film and its manufacturing method |
| CN101508808A (en) * | 2009-03-12 | 2009-08-19 | 广州市合诚化学有限公司 | Biological medical large transfusion soft bag connector material and preparation thereof |
| CN103764395A (en) * | 2011-07-08 | 2014-04-30 | 金达胶片美国有限责任公司 | Multi-layer films having improved sealing properties |
-
2014
- 2014-07-25 CN CN201410356638.9A patent/CN104130507A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003874A2 (en) * | 2002-06-26 | 2004-01-08 | Avery Dennison Corporation | Oriented films comprising polypropylene / olefin elastomer blends |
| CN101024318A (en) * | 2006-01-31 | 2007-08-29 | 东洋纺织株式会社 | Polypropylene resin laminated film and its manufacturing method |
| CN101508808A (en) * | 2009-03-12 | 2009-08-19 | 广州市合诚化学有限公司 | Biological medical large transfusion soft bag connector material and preparation thereof |
| CN103764395A (en) * | 2011-07-08 | 2014-04-30 | 金达胶片美国有限责任公司 | Multi-layer films having improved sealing properties |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106113839A (en) * | 2016-07-15 | 2016-11-16 | 黄山永新股份有限公司 | A kind of fruit and vegerable salad packaging composite film and production technology thereof |
| CN112046108A (en) * | 2020-08-31 | 2020-12-08 | 广东鼎孚新材料科技有限公司 | Fresh food keeps fresh and uses ventilative bag |
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Application publication date: 20141105 |