CN101966772A - Plastic flexible packaging film with high obstruction - Google Patents
Plastic flexible packaging film with high obstruction Download PDFInfo
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- CN101966772A CN101966772A CN2010102727351A CN201010272735A CN101966772A CN 101966772 A CN101966772 A CN 101966772A CN 2010102727351 A CN2010102727351 A CN 2010102727351A CN 201010272735 A CN201010272735 A CN 201010272735A CN 101966772 A CN101966772 A CN 101966772A
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- plastic flexible
- low density
- flexible package
- anhydride modified
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- 229920003023 plastic Polymers 0.000 title claims abstract description 33
- 239000004033 plastic Substances 0.000 title claims abstract description 33
- 239000012785 packaging film Substances 0.000 title abstract description 11
- 229920006280 packaging film Polymers 0.000 title abstract description 11
- 238000009459 flexible packaging Methods 0.000 title abstract description 7
- 230000004888 barrier function Effects 0.000 claims abstract description 34
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims abstract description 29
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims abstract description 17
- 239000004952 Polyamide Substances 0.000 claims abstract description 14
- 229920002647 polyamide Polymers 0.000 claims abstract description 14
- 229920001684 low density polyethylene Polymers 0.000 claims description 20
- 239000004702 low-density polyethylene Substances 0.000 claims description 20
- 239000004698 Polyethylene Substances 0.000 claims description 19
- 150000008064 anhydrides Chemical class 0.000 claims description 16
- 229920000642 polymer Polymers 0.000 claims description 16
- 238000004026 adhesive bonding Methods 0.000 claims description 13
- 229920000573 polyethylene Polymers 0.000 claims description 13
- -1 polyethylene Polymers 0.000 claims description 12
- 125000000524 functional group Chemical group 0.000 claims description 10
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 10
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 10
- 229920000098 polyolefin Polymers 0.000 claims description 10
- 238000003475 lamination Methods 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 238000001125 extrusion Methods 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
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 4
- 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 11
- 238000012856 packing Methods 0.000 description 9
- 150000001875 compounds Chemical group 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000005021 flexible packaging material Substances 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 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
- 230000008859 change Effects 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 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
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 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
- 230000002950 deficient 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
- 235000021485 packed food Nutrition 0.000 description 1
- 230000000149 penetrating effect Effects 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
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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
Patent application of the present invention relates to is multilayer composite plastic flexible packaging film as food, medicine.
Background technology
At present, food and drug packing material manufacturing have begun 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 all 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, is 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 on the other hand.Multiple patented technology is disclosed in the Chinese patent, as name be 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 manufacturing of dry type composite algorithm, production cycle is long and can't satisfy existing professional technique standard-required, and this packaging material film itself exists cost height, opaque technical problem; Chinese patent also discloses a kind of number of patent application: CN200910247702.9, " five-layer co-squeezing high-barrier liquid packaging film material and preparation method thereof " patented technology, only comprise one deck barrier layer in the five-layer structure, all the other each levels are that 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 permeability rate technical problems of high, and OTR oxygen transmission rate is 12000cm
3/ m
2, it is to be not more than 2 gram/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 " packing compound, extrude compound " the GB/T10004-2008 standard of implementing of China's on August 1st, 2009 with composite plastic film, bag, dry method, 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 and contained the aluminium foil structure, this point anti-Showing-that-momentum-turning goes out this professional technique standard and proposes because of the dry method combined producing tech exposes series of technical, the compound autofrettage of multilayer composite plastic flexible packaging film dry type is behind coating one deck solvent type adhesive on the plastic sheeting, make solvent evaporates through the compounding machine drying tunnel, dry, cohere through the adjacent composite of hot pressing again with a side, form level and smooth composite, three-layer composite structure just needs an aforesaid operations again, its production cycle is very long, three-layer composite structure needed 96 hours can change next process over to, in addition, the bondline thickness of the solvent-based adhesive in this production technology is not easy control, the solvent type adhesive residual quantity is increased, cause the packing soft material film after compound peculiar smell to occur, increase the probability that pollutes packaged food or medicine, then can only make by the dry type composite algorithm for the plastic flexible packaging material that includes aluminium coated; Also increased the requirement of raw material and additive sanitary index in the 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 choke, resistance is wet and barrier property, a layer and layer high high barrier plastic flexible package film of bond quality.The high barrier plastic flexible package membrane technology scheme that patent application of the present invention provides, its major technique content is: a kind of high barrier plastic flexible package film, it successively by polyamide PA layer, ethylene-vinyl alcohol copolymer EVOH barrier layer and polyamide PA layer be core structural layer, the side with core structural layer is that medial surface is made of through coextru-lamination gluing layer and hot sealing layer successively again.Wherein said gluing layer is special polyolefin A DMER, anhydride modified linear low density of polyethylene polymer LLDPE, the anhydride modified low density polyethylene polymer LDPE etc. that introduce polar functional group by graft reaction.
In above-mentioned overall technical architecture, be that lateral surface still is shaped on gluing layer and printed layers through co-extrusion in the another side of core structural layer.Wherein said gluing layer is polyolefin A DMER, anhydride modified linear low density of polyethylene polymer LLDPE, the anhydride modified low density polyethylene polymer LDPE etc. that introduce 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 package membrane technology scheme that patent application of the present invention provides, wrapped folder is combined with ethylene-vinyl alcohol copolymer EVOH and constitutes the packing soft material film with three layers of barrier layer in the middle of having adopted two-layer polyamide PA, polyamide PA and ethylene-vinyl alcohol copolymer EVOH compatibility are good in the technical program, need not between the two any adhesive just can well in conjunction with, ethylene-vinyl alcohol copolymer EVOH combines with the polyamide PA co-extrusion of both sides, in this combination, polyamide PA also effectively improves the fragility defective 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 only is 0,5cm
3/ m
2, steam penetrating capacity is not higher than 1.5 gram/m
2, well below existing product,, pack the quality that can keep packed article for a long time by this plastic flexible package film especially for the stronger food of volatility, medicine etc., prolong the term of validity of guaranteeing the quality of packed article; It also has good oil resistivity and chemical resistance, as under 68 degree F, immersing in all kinds of solvents and the oil, weight increase percentage is respectively after 1 year: to cyclohexane, dimethylbenzene, oil fan, benzene and the third bronze medal equal solvent is 0, to salad oil is 0, to hexylene glycol is 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, the every technical indicator that meets country's " packing compound, extrude compound " GB/T10004-2008 standard-required fully with composite plastic film, bag, dry method, for food, medicine and heavy chemicals etc. provide a kind of meet high-barrier requirement, high resistant wet requirement, high choke requirement, high tenacity, high strength, have the plastic flexible package film of transparent appearance.
Description of drawings
Accompanying drawing is for being the layer structure figure of the embodiment of this high barrier plastic flexible package film.
The specific embodiment
The high barrier plastic flexible package 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, be medial surface by gluing layer 4 and hot sealing layer 6 in molten condition with a side of core structural layer again, coextru-lamination welds the high barrier plastic flexible package film of making in a die head, the great advantage of ethylene-vinyl alcohol copolymer EVOH barrier layer is that the gas barrier effect is superior, but owing to exist hydroxyl in the molecular structure of ethylene-vinyl alcohol copolymer EVOH, so it goes back possess hydrophilic property and hygroscopicity simultaneously, because ethylene-vinyl alcohol copolymer EVOH is wrapped in the centre by two-layer polyamide PA layer with good affinity, improved the barrier of product greatly in the technical program, gas barrier property and resistance are moist; Described gluing layer 4 can be the special polyolefin A DMER that graft reaction is introduced polar functional group that passes through of Mitsui company manufacturing, 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 coextru-lamination has anhydride modified linear low density of polyethylene polymer LLDPE and anhydride modified low density polyethylene polymer LDPE on the special polyolefin A DMER layer of introducing polar functional group by graft reaction, hot sealing layer is preferably polythene PE, and 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 special polyolefin A DMER 5 and polyamide PA co-extrusion parcel by the graft reaction polar functional group 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 a 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 also replaces the special polyolefin A DMER that introduces 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 (6)
1. high barrier plastic flexible package film, it is characterized in that it successively by polyamide PA layer, ethylene-vinyl alcohol copolymer EVOH barrier layer and polyamide PA layer be core structural layer, the side with core structural layer is that medial surface is made of through coextru-lamination gluing layer and hot sealing layer successively again.
2. according to the high barrier plastic flexible package film of claim 1, it is characterized in that wherein said gluing layer is one of them of the special polyolefin A DMER that introduces polar functional group by graft reaction, anhydride modified linear low density of polyethylene polymer LLDPE or anhydride modified low density polyethylene polymer LDPE.
3. according to the high barrier plastic flexible package film of claim 1, it is characterized in that its gluing layer for coextru-lamination on the special polyolefin A DMER layer of introducing polar functional group by graft reaction has anhydride modified linear low density of polyethylene polymer LLDPE and anhydride modified low density polyethylene polymer LDPE, obtains the coextru-lamination layer structure and is respectively PA|EVOH|PA|ADMER|LLDPE|LDPE|PE from outside to inside.
4. according to the high barrier plastic flexible package film of claim 1, it is characterized in that being shaped on gluing layer and printed layers as lateral surface through co-extrusion at another.
5. according to the high barrier plastic flexible package film of claim 4, it is characterized in that described gluing layer is one of them of the special polyolefin A DMER that introduces polar functional group by graft reaction, anhydride modified linear low density of polyethylene polymer LLDPE or anhydride modified low density polyethylene polymer LDPE.
6. according to the high barrier plastic flexible package film of claim 4, 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 true CN101966772A (en) | 2011-02-09 |
| CN101966772B 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) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| CN106739330A (en) * | 2016-11-21 | 2017-05-31 | 厦门长塑实业有限公司 | A kind of linear tear, 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 |
| CN107521191A (en) * | 2017-08-23 | 2017-12-29 | 宁波华丰包装有限公司 | High-barrier food preserving bag film |
| CN108394156A (en) * | 2018-02-15 | 2018-08-14 | 东莞市富默克化工有限公司 | A kind of liquid chemicals packaging film and its preparation method and application |
| CN109747971A (en) * | 2017-11-08 | 2019-05-14 | 林紫绮 | The method that cation water-based solution manufacture prevents ink pollution packaging material |
| 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 |
| WO2023226936A1 (en) * | 2022-05-26 | 2023-11-30 | 上海紫江彩印包装有限公司 | Composite sheet for injection packaging, and preparation method therefor and use thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106739330A (en) * | 2016-11-21 | 2017-05-31 | 厦门长塑实业有限公司 | A kind of linear tear, high-barrier polyamide film |
| CN107521191A (en) * | 2017-08-23 | 2017-12-29 | 宁波华丰包装有限公司 | High-barrier food preserving bag 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 |
| CN108394156A (en) * | 2018-02-15 | 2018-08-14 | 东莞市富默克化工有限公司 | A kind of liquid chemicals packaging film and its preparation method and application |
| 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 |
| WO2023226936A1 (en) * | 2022-05-26 | 2023-11-30 | 上海紫江彩印包装有限公司 | Composite sheet for injection packaging, and preparation method therefor and use thereof |
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| Publication number | Publication date |
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| CN101966772B (en) | 2013-05-22 |
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