CN101966772B - Plastic flexible packaging film with high obstruction - Google Patents
Plastic flexible packaging film with high obstruction Download PDFInfo
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- CN101966772B CN101966772B CN 201010272735 CN201010272735A CN101966772B CN 101966772 B CN101966772 B CN 101966772B CN 201010272735 CN201010272735 CN 201010272735 CN 201010272735 A CN201010272735 A CN 201010272735A CN 101966772 B CN101966772 B CN 101966772B
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- layer
- flexible packaging
- packaging film
- plastic flexible
- low density
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- 229920003023 plastic Polymers 0.000 title claims abstract description 30
- 239000004033 plastic Substances 0.000 title claims abstract description 30
- 239000012785 packaging film Substances 0.000 title claims abstract description 22
- 229920006280 packaging film Polymers 0.000 title claims abstract description 22
- 238000009459 flexible packaging Methods 0.000 title claims abstract description 19
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims abstract description 30
- 230000004888 barrier function Effects 0.000 claims abstract description 21
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims abstract description 18
- 239000004952 Polyamide Substances 0.000 claims abstract description 14
- 229920002647 polyamide Polymers 0.000 claims abstract description 14
- 239000004698 Polyethylene Substances 0.000 claims description 18
- 229920001684 low density polyethylene Polymers 0.000 claims description 18
- 239000004702 low-density polyethylene Substances 0.000 claims description 18
- 150000008064 anhydrides Chemical class 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 14
- 238000004026 adhesive bonding Methods 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- -1 polyethylene Polymers 0.000 claims description 11
- 125000000524 functional group Chemical group 0.000 claims description 9
- 238000003475 lamination Methods 0.000 claims description 9
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 9
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 9
- 229920000098 polyolefin Polymers 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 3
- 239000010410 layer Substances 0.000 abstract description 58
- 239000003814 drug Substances 0.000 abstract description 8
- 235000013305 food Nutrition 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 3
- 229940079593 drug Drugs 0.000 abstract description 2
- 239000012790 adhesive layer Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 12
- 238000012856 packing Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000002904 solvent Substances 0.000 description 8
- 239000005021 flexible packaging material Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 150000001875 compounds Chemical group 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 240000008415 Lactuca sativa Species 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
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000004434 industrial solvent Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000012045 salad Nutrition 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention provides a plastic flexible packaging film with high obstruction. The plastic flexible packaging film comprises a polyamide PA layer, an ethylene-vinyl alcohol copolymer EVOH barrier layer and a polyamide PA layer which are laminated in a coextrusion way, and a heat seal inner layer comprising an adhesive layer and a heat seal layer is prepared in the coextrusion way by taking one side surface of the plastic flexible packaging film as an inner side surface. The invention provides the plastic flexible packaging film which meets the requirements for high obstruction, moisture obstruction and gas obstruction and has high tenacity and strength and transparent appearance for foods, medicines, chemical products, and the like.
Description
Technical field
What patent application of the present invention related to is the multilayer composite plastic flexible packaging film as food, medicine.
Background technology
At present, food and drug packing material manufacture have started to step into the high-tech industry field of worldwide concern.In China, the plastic flexible packaging material of food and medicine and manufacturing technology thereof have also obtained suitable attention and development.As the plastic flexible packaging material of food, medicine,, barrier property wet to hindering has higher technical standard requirement.For improving the barrier property technical indicator of plastic flexible packaging material, the technical staff sets about research, development of new high obstructing performance plastic material on the one hand, on the other hand exactly by the multi-layer compound structure that improves plastic flexible packaging material, the technical purpose that reaches raising plastic flexible packaging material barrier property.Multiple patented technology is disclosed in Chinese patent, as name is called " high barrier aluminum-plating composite film for packing liquid dairy product ", the patent No. is CN200610050148.1, its seven layers include barrier layer and aluminizer all has the mutual compound formation of gluing layer between each interior functional layer, these packaging material can only be taked the manufacture of dry type composite algorithm, production cycle is long and can't meet existing professional technique standard-required, and itself there is high, the opaque technical problem of cost in this packaging material film; Chinese patent also discloses a kind of number of patent application: CN200910247702.9, " five-layer co-extrusion high barrier liquid packaging and preparation method thereof " patented technology, only comprise one deck barrier layer in five-layer structure, all the other each levels are that the resins such as high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density of polyethylene mix composition according to a certain percentage, this structure exists oxygen flow and the higher technical problem of permeability rate, and OTR oxygen transmission rate is 12000cm
3/ m
2, it is to be not more than 2 grams/m that steam sees through
2, the shelf-life is short, and gas permeability causes the packaged product quality to reduce.
In addition, formal new national standard " for packing composite plastic film, bag, dry laminating, extrude compound " the GB/T10004-2008 standard of implementing of China's on August 1st, 2009, several places that this standard is compared with primary standard are important not to be both: one, improved the requirement of solvent residual amount, the solvent total residue is by 10mg/m
2be adjusted into 5mg/m
2, benzene class residual quantity is by 3mg/m
2must not be adjusted into and detect, two, deleted containing aluminium foil structure, this point reflects that this professional technique standard proposes because the dry laminating production technology exposes series of technical, multilayer composite plastic flexible packaging film dry type composite manufacturing method is be coated with one deck solvent type adhesive on plastic sheeting after, make solvent evaporates through the compounding machine drying tunnel, dry, through hot pressing composite adjacent with a side, cohere again, form level and smooth composite, three-layer composite structure just needs one time aforesaid operations again, its production cycle is very long, three-layer composite structure needs can proceed to next process in 96 hours, in addition, the bondline thickness of the solvent-based adhesive in this production technology is not easy to control, usually can make the solvent type adhesive residual quantity increase, cause the packing soft material film after compound peculiar smell to occur, increase the probability that pollutes packaged food or medicine, for the plastic flexible packaging material that includes aluminium coated, can only be manufactured by the dry type composite algorithm, also increased the requirement of raw material and additive sanitary index in above-mentioned technical standard.Therefore, for tackling the enforcement requirement of described professional technique standard, the structure and the manufacturing process thereof that fundamentally change existing plastic flexible packaging material are exactly very necessary.
Summary of the invention
The goal of the invention of patent application of the present invention is to provide a kind of and has high-gas resistance, resistance is wet and barrier property, high-barrier plastic flexible packaging film that layer is high with layer bond quality.The high-barrier plastic flexible packaging film technical scheme that patent application of the present invention provides, its main technical content is: a kind of high-barrier plastic flexible packaging film, it is core structural layer, is take a side of core structural layer again and consist of through coextru-lamination gluing layer and hot sealing layer successively as medial surface by polyamide PA layer, ethylene-vinyl alcohol copolymer EVOH barrier layer and polyamide PA layer successively.Wherein said gluing layer is to introduce special polyolefin A DMER, anhydride modified linear low density of polyethylene polymer LLDPE, the anhydride modified low density polyethylene polymer LDPE etc. of polar functional group by graft reaction.
In above-mentioned overall technical architecture, in the another side of core structural layer, be that lateral surface still is shaped with gluing layer and printed layers through co-extrusion.Wherein said gluing layer is to introduce polyolefin A DMER, anhydride modified linear low density of polyethylene polymer LLDPE, the anhydride modified low density polyethylene polymer LDPE etc. of polar functional group by graft reaction; Described printed layers is polypropylene PP layer, PETG, also claims polyester PET or polythene PE.
The high-barrier plastic flexible packaging film technical scheme that patent application of the present invention provides, in the middle of having adopted two-layer polyamide PA, wrapped folder is combined with ethylene-vinyl alcohol copolymer EVOH and forms the packing soft material film with three layers of barrier layer, in the technical program, polyamide PA and ethylene-vinyl alcohol copolymer EVOH compatibility are good, between the two without any adhesive just can well in conjunction with, ethylene-vinyl alcohol copolymer EVOH is combined with the polyamide PA of both sides co-extrusion, in this combination, polyamide PA also effectively improves the fragility defect that ethylene-vinyl alcohol copolymer EVOH exists, making it toughness strengthens, obtain the obdurability packaging film, cracky not, layering, swelling, itself can make the packaging material that become any low dose, barrier, gas barrier property, resistance that three layers of barrier layer packaging film combined structure improved product greatly are moist, and its oxygen transit dose is only 0.5cm
3/ m
2, steam penetrating capacity is not higher than 1.5 grams/m
2, well below existing product, especially stronger food, medicine etc. for volatility, can be kept the quality of packed article, the term of validity of guaranteeing the quality that extends packed article for a long time by this plastic flexible package film packing, it also has good oil resistivity and chemical resistance, as immersed under 68 degree F in various solvents and oil, after 1 year, weight increase percentage is respectively: to cyclohexane, dimethylbenzene, oil fan, benzene and the third bronze medal equal solvent, be 0, to salad oil, be 0, to hexylene glycol, be 2.3%, so as from the foregoing, this plastic flexible package film is applicable to grease-like liquid packing, also is suitable for poisonous and volatile products, as the packing of product of industrial solvent, agricultural chemicals, agrochemical, the technical program can be made transparent packaging film material, and glossiness is good, be suitable as high-grade transparent flexible packing material, its glacing flatness and intensity, toughness all are better than existing product, meet country's " for packing composite plastic film, bag, dry laminating, extrude compound " all technical of GB/T10004-2008 standard-required fully, for food, medicine and heavy chemicals etc. provide a kind of meet high-barrier requirement, high resistant wet requirement, high-gas resistance requirement, high tenacity, high strength, there is the plastic flexible package film of transparent appearance.
The accompanying drawing explanation
Accompanying drawing is the layer structure figure of the embodiment for this high-barrier plastic flexible packaging film.
The specific embodiment
The high-barrier plastic flexible packaging film that patent application of the present invention provides, it is successively by polyamide PA layer 1, ethylene-vinyl alcohol copolymer EVOH barrier layer 2 and polyamide PA layer 3 are core structural layer, take again core structural layer a side as medial surface by gluing layer 4 and hot sealing layer 6 in molten condition, in a die head, coextru-lamination welds the high-barrier plastic flexible packaging film of making, the great advantage of ethylene-vinyl alcohol copolymer EVOH barrier layer is that the gas barrier effect is superior, but exist hydroxyl in the molecular structure due to ethylene-vinyl alcohol copolymer EVOH, so it also has hydrophily and hygroscopicity simultaneously, in the middle of being wrapped in by the two-layer polyamide PA layer with good affinity due to ethylene-vinyl alcohol copolymer EVOH in the technical program, greatly improved the barrier of product, gas barrier property and resistance are moist, described gluing layer 4 can be introduced the special polyolefin A DMER of polar functional group by graft reaction for what Mitsui company manufactured, also can be by anhydride modified linear low density of polyethylene polymer LLDPE, one of them of anhydride modified low density polyethylene polymer LDPE replaces the special polyolefin A DMER adhesive of introducing polar functional group by graft reaction, or anhydride modified linear low density of polyethylene polymer LLDPE and anhydride modified low density polyethylene polymer LDPE are arranged introducing coextru-lamination on the special polyolefin A DMER layer of polar functional group by graft reaction, hot sealing layer is preferably polythene PE, a resulting embodiment coextru-lamination seven shape structure layer by layer is respectively from outside to inside:
PA|EVOH|PA|ADMER|LLDPE|LDPE|PE。
The second embodiment coextru-lamination layer structure of patent application of the present invention as shown in drawings, it is by the special polyolefin A DMER5 by the graft reaction polar functional group and polyamide PA co-extrusion parcel in the core structural layer two sides, thereby intercept the harmful effect of humidity to ethylene-vinyl alcohol copolymer EVOH comprehensively, its barrier is improved comprehensively, its outermost layer is printed layers 7, can be polypropylene PP, polythene PE or PETG, the PET that also claims polyester, its coextru-lamination seven layer by layer the shape structure be respectively from outside to inside: PP|ADMER|PA|EVOH|PA|ADMER|PE, PE|ADMER|PA|EVOH|PA|ADMER|PE,
PET|ADMER|PA|EVOH|PA|ADMER|PE；
Wherein the gluing layer is also replaced and is introduced the special polyolefin A DMER of utmost point functional group by graft reaction by one of following adhesive backers: anhydride modified linear low density of polyethylene polymer LLDPE, anhydride modified low density polyethylene polymer LDPE etc.
Claims (3)
1. a high-barrier plastic flexible packaging film, it is characterized in that it is successively by polyamide PA layer, ethylene-vinyl alcohol copolymer EVOH barrier layer and polyamide PA layer are core structural layer PA|EVOH|PA, take a side of core structural layer consists of through coextru-lamination gluing layer and hot sealing layer successively as medial surface again, the another side of core structural layer also co-extrusion is shaped with gluing layer and printed layers, wherein said gluing layer is to introduce the special polyolefin A DMER of polar functional group by graft reaction, one of them of anhydride modified linear low density of polyethylene polymer LLDPE or anhydride modified low density polyethylene polymer LDPE, obtaining the oxygen transit dose is 0.5cm
3/ m
2, steam penetrating capacity is higher than 1.5 grams/m
2flexible packaging film.
2. according to the high-barrier plastic flexible packaging film of claim 1, it is characterized in that its gluing layer, for anhydride modified linear low density of polyethylene polymer LLDPE and anhydride modified low density polyethylene polymer LDPE being arranged introducing coextru-lamination on the special polyolefin A DMER layer of polar functional group by graft reaction, obtains the coextru-lamination layer structure and is respectively from outside to inside PA|EVOH|PA|ADMER|LLDPE|LDPE|PE.
3. according to the high-barrier plastic flexible packaging film of claim 1, it is characterized in that; Described printed layers is one of them of polypropylene PP, polyethylene terephtalate or polythene PE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010272735 CN101966772B (en) | 2010-09-01 | 2010-09-01 | Plastic flexible packaging film with high obstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010272735 CN101966772B (en) | 2010-09-01 | 2010-09-01 | Plastic flexible packaging film with high obstruction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101966772A CN101966772A (en) | 2011-02-09 |
| CN101966772B true CN101966772B (en) | 2013-05-22 |
Family
ID=43546026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010272735 Expired - Fee Related CN101966772B (en) | 2010-09-01 | 2010-09-01 | Plastic flexible packaging film with high obstruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101966772B (en) |
Families Citing this family (12)
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|---|---|---|---|---|
| CN102229270A (en) * | 2011-04-15 | 2011-11-02 | 江阴升辉包装材料有限公司 | Composite structure high barrier molded resin sheet material, and processing method thereof |
| CN105882086A (en) * | 2014-12-25 | 2016-08-24 | 亨达科技(天津)有限公司 | Anti-tearing composite packaging film with pattern |
| CN104816525A (en) * | 2015-04-30 | 2015-08-05 | 桐城市福润包装材料有限公司 | High-barrier plastic flexible-package composite material easy to tear |
| CN106079765A (en) * | 2016-06-28 | 2016-11-09 | 朝阳佛瑞达科技有限公司 | A kind of resistance to steaming and decocting casting films and production method thereof |
| CN106739330B (en) * | 2016-11-21 | 2018-08-17 | 厦门长塑实业有限公司 | A kind of linearly tearing, high-barrier polyamide film |
| CN107501704A (en) * | 2017-08-23 | 2017-12-22 | 宁波华丰包装有限公司 | EVOH high-barrier co-extrusion films |
| CN107521191B (en) * | 2017-08-23 | 2019-12-24 | 宁波华丰包装有限公司 | High-barrier food fresh-keeping bag film |
| CN109747971A (en) * | 2017-11-08 | 2019-05-14 | 林紫绮 | The method that cation water-based solution manufacture prevents ink pollution packaging material |
| CN108394156B (en) * | 2018-02-15 | 2021-03-23 | 东莞市富默克化工有限公司 | Liquid chemical packaging film and preparation method and application thereof |
| CN111483201A (en) * | 2020-04-21 | 2020-08-04 | 珠海徐太日用品有限公司 | High-barrier flexible packaging film and preparation process thereof |
| CN111499960A (en) * | 2020-05-08 | 2020-08-07 | 四川省宏源防水工程有限公司 | Preparation and application of high-resilience EPO (erythropoietin) high polymer material and waterproof board for gas tunnel |
| CN114953688B (en) * | 2022-05-26 | 2023-09-08 | 上海紫江彩印包装有限公司 | Composite sheet for injection packaging and preparation method and application thereof |
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| CN101966772A (en) | 2011-02-09 |
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