CN101905776A - Multilayer coextrusion paper-like liquid packaging film - Google Patents
Multilayer coextrusion paper-like liquid packaging film Download PDFInfo
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- CN101905776A CN101905776A CN2010102444028A CN201010244402A CN101905776A CN 101905776 A CN101905776 A CN 101905776A CN 2010102444028 A CN2010102444028 A CN 2010102444028A CN 201010244402 A CN201010244402 A CN 201010244402A CN 101905776 A CN101905776 A CN 101905776A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention provides a multilayer coextrusion paper-like liquid packaging film. In resent years, people demand more dairy products, and the demand for the packaging films of various kinds of dairy products and liquid foods increases along with the continuous development of a UHT (Ultra Heat Treated) sterilization technology. According to incomplete statistics, only the consumption of milk packaging films reaches 7200 tons/year in 2009, and because liquid foods have self characteristics, liquid packaging films which are all made from 100% plastics are impossible to adopt a biodegradable packaging material to package the liquid foods so that gigantic pressure is brought to environmental protection, and a great amount of oil resources is consumed. Therefore, the field needs a material which can be used for packaging liquid, particularly a multi-layer liquid packaging film for packaging liquid dairy products and being capable of reducing the consumption of oil resources. According to one aspect of the invention, the invention provides the multilayer film is used for packaging liquid and can greatly reduce the consumption of plastic raw materials.
Description
Background technology:
In recent years, along with people are increasing to the dairy products demand, and be accompanied by the continuous development of UHT sterilization technology, the demand of all kinds of dairy products and liquid food packing film is also increasing.According to incompletely statistics; 2009 are only amount of membrane of milk pack just reaches 7200 tons (years); big consumption like this; add because the characteristic that liquid food itself is had; all adopt the liquid packaging film of 100% plastic raw materials manufacturing; can't adopt biodegradable packing to take packing liquid food at all,, also consume a large amount of oil resources simultaneously so bring huge pressure to environmental protection.
Therefore, this area still needs a kind of material that can be used for flexible package punch, especially packing liquid dairy products, has a multilayer liquid packaging film structure that reduces the petroleum resource consumption amount.
Summary of the invention:
For overcoming problems of the prior art, the inventor finds that behind in-depth study the hot sealing layer by comprising that at least polyethylene (PE) reaches and the heat-sealing intensifier is formed is preferably selected from: polyolefin, additive, the common skin of forming of inorganic matter.Hot sealing layer (internal layer) and outer by adopting multi-layer co-extruded extruder to extrude the PP TYPE of processing, raw materials for plastics production that can unexpected reduction by 10%～50%, have the same outward appearance of paper simultaneously,, very good processability is arranged by liquid food is packed.
According to an aspect of the present invention, provide a kind of packing liquid material that is used for, can reduce the multilayer film of plastic raw materials greatly, having comprised: multilayer coextrusion paper-like liquid packaging film comprises the following ingredients combination:
A. the hot sealing layer of multilayer coextrusion paper-like liquid packaging film (internal layer) is made up of the heat-sealing intensifier of: 1%～99% polyethylene and 99%～1%;
B. the skin of multilayer coextrusion paper-like liquid packaging film is to be made up of 10%～80% inorganic matter, 30%～0.1% compatilizer and 60%～19.9% polyolefin.
Extrude the multilayer coextrusion paper-like liquid packaging film that inflation film manufacturing machine is prepared by a and b by multi-layer co-extruded.
According to embodiment of the present invention, a of multilayer coextrusion paper-like liquid packaging film and b are in PP TYPE, and the shared thickness of each layer is a (hot sealing layer) 10%～90%, and b (skin) 90%～10% is in the gross thickness of multilayer coextrusion paper-like liquid packaging film.
According to embodiment of the present invention, multilayer coextrusion paper-like liquid packaging film, wherein the described polyethylene of a is selected from: the blend of low density polyethylene (LDPE) (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE) (HDPE), linear low density polyethylene (LLDPE) and above-mentioned compound.
According to embodiment of the present invention, multilayer coextrusion paper-like liquid packaging film, wherein the heat-sealing intensifier of a is selected from: metallocene PE (MLLDPE), ethylene-vinyl acetate copolymer (EVA), acrylic copolymer, ionomer and above-mentioned elastic body, compound blend.
According to embodiment of the present invention, multilayer coextrusion paper-like liquid packaging film, wherein the inorganic matter of b is selected from: calcium carbonate, french talc, kaolin, mica, calcite in powder, marble powder, agstone, aluminium powder, iron powder, gypsum powder, amargosite, vermiculite power, diatomite in powder, zeolite powder, huge sum of money stone flour, celestite powder, rare earth, wollastonite in powder, silicon dioxide, clay and above-mentioned compound are formed.
According to embodiment of the present invention, multilayer coextrusion paper-like liquid packaging film, wherein the compatilizer of b is selected from: the coupling agent class: silane coupling agent, titante coupling agent, aluminium esters of gallic acid coupling agent, Organic Chromium class coupling agent; Elastic body class: polyurethane elastomer, polyethylene elastomer body, polypropylene elastomer, polyamide elastomer, metallocene elastic body, ethylene-vinyl acetate copolymer, Ethylene Propylene Terpolymer elastic body; Glue class: natural rubber, EP rubbers, butyl rubber, isoprene rubber, government rubber, acrylic rubber, Arabic gum, pectin, gelatine; Acids: acrylic acid, methyl methacrylate, EMA, butyl methacrylate, methyl acrylate, ethyl acrylate, maleic acid, GMA, ionomer and they and ethene, propylene, the copolymer of polystyrene, blend, graft copolymerization, blend, cmpd; Antioxidant class: inferior phosphide kind antioxidant, Hinered phenols antioxidant; Slip agent class, erucyl amide, oleamide, silicone based, vinegar class and above-mentioned compound, blend.
According to embodiment of the present invention, multilayer coextrusion paper-like liquid packaging film, wherein the polyolefin of b is selected from: polyethylene, polypropylene, polystyrene, polybutene, metallocene PE, metallocene polypropylene and above-mentioned compound, blend, copolymer.
According to another embodiment of the present invention, multilayer coextrusion paper-like liquid packaging film, wherein a hot sealing layer also contains the black masterbatch, accounts for 1%～15% of total amount, in a hot sealing layer total weight.
According to the preferred embodiments of the invention, multilayer coextrusion paper-like liquid packaging film, also barrier layer c can be arranged, be selected from: the barrier layer of polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), PVA alloy accounts for 0.7%～8% of multi-layer co-extruded stone paper liquid packaging film gross thickness.
According to specific embodiments of the present invention, the job operation of multilayer coextrusion paper-like liquid packaging film is to adopt the multi-layer co-extruded inflation film manufacturing machine blown film of extruding, and its overall film thickness is: 55 microns～90 microns, and preferred 65 microns～80 microns.
According to the preferred embodiments of the invention, multilayer coextrusion paper-like liquid packaging film, wherein the job operation of c barrier layer is selected from: adopt the coating machine coating, with or adopt the direct coextrusion barrier layer of multi-layer co-extruded extruder c layer, require 1 described a, b layer co-extrusion to form a, c, b or a, b, c multilayer coextrusion paper-like liquid packaging film with aforesaid right.
According to the preferred embodiments of the invention, when adopting barrier layer, the thickness of above-mentioned each layer is respectively: hot sealing layer 10%～80%, barrier layer 0.7%～8%, skin 89.3%～12%, and in the gross thickness of multilayer coextrusion paper-like liquid packaging film.
According to the preferred embodiments of the invention, when barrier layer of the present invention adopts polyvinyl alcohol (PVA) as barrier layer, be preferably selected from: coating process, adopt dry compound machine or coating machine to be coated with.Its structure is: polyethylene (PE) hot sealing layer (black)/polyvinyl alcohol (PVA) coating/adhesive layer/contain inorganic matter, compatilizer and polyolefinic skin (white)/printed layers, when adopting this programme, the thickness of above-mentioned each layer is respectively: polyethylene (PE) hot sealing layer (black) accounts for 10%～82%, polyvinyl alcohol (PVA) coating accounts for 0.5%～8%, contain inorganic matter, compatilizer and polyolefinic skin (white) and account for 89.5%～10%.
According to specific embodiments of the present invention, according to actual needs, also can comprise in the multilayer coextrusion paper-like liquid packaging film: opening agent, slip agent, PPA processing aid and white master material etc.
Industrial applicibility:
Because the present invention has adopted such scheme, has made full use of inorganic material and High molecular material characteristic separately.Adopt Banbury mixer in addition, mixing roll, single screw extrusion machine, the themoplasticity processing prilling process that double screw extrusion machine etc. are known, to inorganic matter, compatilizer, the skin that polyolefin is formed carries out blend and granulation, can fully strengthen dispersiveness and compatibility between polyolefin and the inorganic matter like this, reach and make it easy to process in road, back blown film operation, reduce brilliant point, improve impressionability, simultaneously can improve liquid packaging film physical property and mechanical strength greatly, and when liquid-filling machine canned liquid food, total has formed a heat-sealing gradient from low to high from inside to outside just, this liquid film can be in wide in range relatively heat-sealing temperature, still do well, thereby can reduce the bottom pour ladle rate of all kinds of liquid food packings to a certain extent, for enterprise reduces the loss.If the present invention is applied; but cost-cutting 20%～30% per ton so this is highly beneficial for reducing packing cost, can reduce the use amount nearly 30%～50% of plastic raw materials simultaneously; this is all highly beneficial for reducing carbon emission amount and environmental protection, and great using value is arranged.Multilayer coextrusion paper-like liquid packaging film of the present invention can be used for all kinds of liquid food packings such as dairy products, beverage, liquid pesticidal, seasonings.
Further specify the present invention with non-limiting example below, but it should be noted, it is limitation of the present invention that these embodiment should not be considered as.
The specific embodiment:
In present specification and appended claims, except as otherwise noted, all parts and percentum are all based on weight.
Embodiment 1 (the outer field embodiment 1 of b):
In the embodiment of the invention, multilayer coextrusion paper-like liquid packaging film, the b skin is by 75% calcium carbonate (maker: the Heshan chemical industry), 5% natural rubber, ethylene-acrylic acid copolymer, du pont company) and 20% polyethylene (maker: common form CNOOC) mixture ratio 1: 0.5 (maker:.After described calcium carbonate, natural rubber, ethylene-acrylic acid copolymer, polyethylene fully mixed, adopt double-screw extruding pelletizing machine extruding pelletization, and fully dry, obtain the outer raw material of b of multilayer coextrusion paper-like liquid packaging film.
The processing temperature of each section of double-screw extruding pelletizing machine is respectively: 170 ℃, 180 ℃, 190 ℃, 190 ℃, 200 ℃.
Embodiment 2 (the outer field embodiment 2 of b):
In the embodiment of the invention, multilayer coextrusion paper-like liquid packaging film, the b skin is by 65% french talc, titanium dioxide, 1: 0.2 (maker: the Heshan chemical industry) of mixture ratio, 8% vinyltrimethoxy silane, butyl rubber, triphenyl phosphite, Nanjing dawn chemical industry Co., Ltd) and 27% polypropylene (maker: common form Yanshan Mountain chemical industry) mixture ratio 1: 2: 0.01 (maker:.After described french talc, titanium dioxide, vinyltrimethoxy silane, butyl rubber, triphenyl phosphite, polypropylene fully mixed; adopt double-screw extruding pelletizing machine extruding pelletization; and fully dry, obtain the outer raw material of b of multilayer coextrusion paper-like liquid packaging film.
The processing temperature of each section of double-screw extruding pelletizing machine is respectively: 170 ℃, 180 ℃, 190 ℃, 190 ℃, 200 ℃.
Embodiment 3 (the outer field embodiment 3 of b):
In the embodiment of the invention, multilayer coextrusion paper-like liquid packaging film, the b skin is by 30% calcium carbonate, kaolin, clay (maker: the Heshan chemical industry), 15% polyethylene elastomer body, erucyl amide, Hebei Barrier Packaging Materials Co., Ltd.) and 55% polyethylene, polypropylene (maker: common composition CNOOC) mixture ratio 1: 0.01 (maker:.After described calcium carbonate, kaolin, clay, polyethylene elastomer body, erucyl amide, polyethylene, polypropylene fully mixed, adopt double-screw extruding pelletizing machine extruding pelletization, and fully dry, obtain the outer raw material of b of multilayer coextrusion paper-like liquid packaging film.
The processing temperature of each section of double-screw extruding pelletizing machine is respectively: 170 ℃, 180 ℃, 190 ℃, 190 ℃, 200 ℃.
Adopting individual layer to extrude the inflation film manufacturing machine extruded blown with above raw material, to become thickness be 20 microns film, promptly get b (skin) and imitate the paper film.
The processing temperature that individual layer is extruded each section of inflation film manufacturing machine is respectively: 170 ℃, 190 ℃, 190 ℃, 190 ℃.
Embodiment one:
Multilayer coextrusion paper-like liquid packaging film in the present embodiment, a is by low density polyethylene (LDPE) (the LDPE) (trade mark: 2420H of 40wt%; Maker: CSPC), the linear low density polyethylene of 30wt% (LLDPE) (trade mark: 7042), the metallocene PE of 30wt% (the MLLDPE) (trade mark: 1018FA; Maker: a hot sealing layer of Zu Chenging Exxon Mobil).
The b skin that b adopts embodiment 1 (manufacturing raw material) to form.
With described hot sealing layer a low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), metallocene PE (MLLDPE) wherein, after adopting batch mixer fully to mix, add in the three-layer co-extruded internal layer (hot sealing layer) and middle level feed bin of extruding inflation film manufacturing machine.
Described embodiment 1 raw material b (skin) is joined in the three-layer co-extruded outer feed bin of extruding inflation film manufacturing machine.
The three-layer co-extruded processing temperature of extruding each layer of inflation film manufacturing machine and each section is respectively:
Internal layer: 150 ℃, 170 ℃, 180 ℃, 180 ℃, 185 ℃;
Middle level: 160 ℃, 180 ℃, 185 ℃, 185 ℃, 190 ℃;
Outer: 160 ℃, 180 ℃, 185 ℃, 185 ℃, 190 ℃;
Head: 180 ℃, 185 ℃.
It is 80 microns product multilayer coextrusion paper-like liquid packaging film of the present invention that co-extrusion is blow molded into gross thickness, and wherein each layer thickness is than being (1: 1: 1).
Embodiment two:
Multilayer coextrusion paper-like liquid packaging film in the present embodiment, a is by low density polyethylene (LDPE) (the LDPE) (trade mark: 2420H of 40wt%; Maker: CSPC), the linear low density polyethylene of 30wt% (LLDPE) (trade mark: 7042), the metallocene PE of 30wt% (the MLLDPE) (trade mark: 1018FA; Maker: a hot sealing layer of Zu Chenging Exxon Mobil).
The b skin that b adopts embodiment 2 (manufacturing raw material) to form.
With described hot sealing layer a low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), metallocene PE (MLLDPE) wherein, after adopting batch mixer fully to mix, add in the three-layer co-extruded internal layer (hot sealing layer) and middle level feed bin of extruding inflation film manufacturing machine.
Described embodiment 2 raw material b (skin) are joined in the three-layer co-extruded outer feed bin of extruding inflation film manufacturing machine.
The three-layer co-extruded processing temperature of extruding each layer of inflation film manufacturing machine and each section is respectively:
Internal layer: 150 ℃, 170 ℃, 180 ℃, 180 ℃, 185 ℃;
Middle level: 160 ℃, 180 ℃, 185 ℃, 185 ℃, 190 ℃;
Outer: 160 ℃, 180 ℃, 185 ℃, 185 ℃, 190 ℃;
Head: 180 ℃, 185 ℃.
It is 90 microns product multilayer coextrusion paper-like liquid packaging film of the present invention that co-extrusion is blow molded into gross thickness, and wherein each layer thickness is than being (1: 2: 1).
Embodiment three:
Multilayer coextrusion paper-like liquid packaging film in the present embodiment, a is by low density polyethylene (LDPE) (the LDPE) (trade mark: 2420H of 35wt%; Maker: CSPC), the linear low density polyethylene of 30wt% (LLDPE) (trade mark: 7042), the ethylene-vinyl acetate copolymer of 30wt% (the EVA) (trade mark: 14-2; Maker: factory is optimized in Beijing) and the black masterbatch (trade mark: 190826 of 5wt%; Maker: the peace color matching) a hot sealing layer of forming.
The b skin that b is made up of embodiment 2 (manufacturing raw material).
By ethylene-vinyl alcohol copolymer (EVOH) (maker: Japanese synthetic chemistry) be interlayer.
By the polyethylene of maleic anhydride graft (maker: du pont company) be the second layer and the 4th layer.
With described hot sealing layer a low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), ethylene-vinyl acetate copolymer (EVA), black masterbatch wherein, after adopting batch mixer fully to mix, add five-layer co-squeezing and extrude in internal layer (hot sealing layer) feed bin of inflation film manufacturing machine.
Described outer b embodiment 2 (manufacturing raw material) is wherein added five-layer co-squeezing to be extruded in the outer feed bin of inflation film manufacturing machine.
Ethylene-vinyl alcohol copolymer (EVOH) is added five-layer co-squeezing to be extruded in the interlayer feed bin of inflation film manufacturing machine.
The polyethylene of maleic anhydride graft is added five-layer co-squeezing respectively to be extruded in the second layer and the 4th layered material storehouse of inflation film manufacturing machine.
The processing temperature that five-layer co-squeezing is extruded each layer of inflation film manufacturing machine and each section is respectively:
Internal layer: 150 ℃, 170 ℃, 180 ℃, 180 ℃, 185 ℃;
The second layer: 150 ℃, 170 ℃, 190 ℃, 190 ℃, 195 ℃;
Middle level: 190 ℃, 210 ℃, 210 ℃, 215 ℃, 230 ℃;
The 4th layer: 150 ℃, 170 ℃, 190 ℃, 190 ℃, 195 ℃;
Outer: 160 ℃, 180 ℃, 185 ℃, 185 ℃, 190 ℃;
Head: 210 ℃, 230 ℃.
It is 80 microns product multilayer coextrusion paper-like liquid packaging film of the present invention that co-extrusion is blow molded into gross thickness, and wherein each layer thickness is than being (2: 0.3: 0.5: 0.3: 2).
Embodiment four:
Multilayer coextrusion paper-like liquid packaging film in the present embodiment, a is by low density polyethylene (LDPE) (the LDPE) (trade mark: 2420H of 35wt%; Maker: CSPC), the linear low density polyethylene of 30wt% (LLDPE) (trade mark: 7042), the black masterbatch (trade mark: 190826 of the acrylic copolymer of 30wt% and 5wt%; Maker: the peace color matching) a hot sealing layer of forming.
With described hot sealing layer a low density polyethylene (LDPE) (LDPE), linear low density polyethylene (LLDPE), acrylic copolymer, black masterbatch wherein, after the employing batch mixer fully mixes, add individual layer and extrude in the feed bin of inflation film manufacturing machine.
The processing temperature that individual layer is extruded each section of inflation film manufacturing machine is respectively: 150 ℃, 170 ℃, 180 ℃, 180 ℃, 185 ℃.
Being blow molded into gross thickness is a heat-sealing tunic of 55 microns product multilayer coextrusion paper-like liquid packaging film of the present invention.
With a heat-sealing tunic of being blown, the coating of employing coating machine, thickness is 0.6 micron polyvinyl alcohol (PVA) coating, then, it is compound to adopt dry compound machine and thickness to be that 20 microns embodiment 3 (film of manufacturing) carries out dry type, the gross thickness of its film is 76 microns, promptly gets PVA high-barrier paper-like liquid packaging film of the present invention.
Claims (11)
1. multilayer coextrusion paper-like liquid packaging film comprises the following ingredients combination:
A. the hot sealing layer of multilayer coextrusion paper-like liquid packaging film (internal layer) is made up of the heat-sealing intensifier of: 1%～99% polyethylene and 99%～1%;
B. the skin of multilayer coextrusion paper-like liquid packaging film is by 10%～80% inorganic matter, and 30%～0.1% compatilizer and 60%～19.9% polyolefin are formed.
Extrude the multilayer coextrusion paper-like liquid packaging film that inflation film manufacturing machine is prepared by a and b by multi-layer co-extruded.
2. a of multilayer coextrusion paper-like liquid packaging film and b are in PP TYPE, and the shared thickness of each layer is a (hot sealing layer) 10%～90%, b (skin) 90%～10%.
3. according to the multilayer coextrusion paper-like liquid packaging film of claim 1-2 item, wherein the described polyethylene of a is selected from: the blend of low density polyethylene (LDPE) (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE) (HDPE), linear low density polyethylene (LLDPE) and above-mentioned compound.
4. according to the multilayer coextrusion paper-like liquid packaging film of claim 1-2 item, wherein the heat-sealing intensifier of a is selected from: metallocene PE (MLLDPE), ethylene-vinyl acetate copolymer (EVA), acrylic copolymer, ionomer and above-mentioned elastic body, compound blend.
5. according to the multilayer coextrusion paper-like liquid packaging film of claim 1-2 item, wherein the inorganic matter of b is selected from: calcium carbonate, french talc, kaolin, mica, calcite in powder, marble powder, agstone, aluminium powder, iron powder, gypsum powder, amargosite, vermiculite power, diatomite in powder, zeolite powder, huge sum of money stone flour, celestite powder, rare earth, wollastonite in powder, silicon dioxide, clay and above-mentioned compound are formed.
6. according to the multilayer coextrusion paper-like liquid packaging film of claim 1-2 item, wherein the compatilizer of b is selected from: the coupling agent class: silane coupling agent, titante coupling agent, aluminium esters of gallic acid coupling agent, Organic Chromium class coupling agent; Elastic body class: polyurethane elastomer, polyethylene elastomer body, polypropylene elastomer, polyamide elastomer, metallocene elastic body, ethylene-vinyl acetate copolymer, Ethylene Propylene Terpolymer elastic body; Glue class: natural rubber, EP rubbers, butyl rubber, isoprene rubber, government rubber, acrylic rubber, Arabic gum, pectin, gelatine; Acids: acrylic acid, methyl methacrylate, EMA, butyl methacrylate, methyl acrylate, ethyl acrylate, maleic acid, GMA, ionomer and they and ethene, propylene, the copolymer of polystyrene, blend, graft copolymerization, blend, cmpd; Antioxidant class: inferior phosphide kind antioxidant, Hinered phenols antioxidant; Slip agent class, erucyl amide, oleamide, silicone based, vinegar class and above-mentioned compound, blend.
7. according to the multilayer coextrusion paper-like liquid packaging film of claim 1-2 item, wherein the polyolefin of b is selected from: polyethylene, polypropylene, polystyrene, polybutene, metallocene PE, metallocene polypropylene and above-mentioned compound, blend, copolymer.
8. according to the multilayer coextrusion paper-like liquid packaging film of claim 1-2 item, wherein a hot sealing layer also contains the black masterbatch, accounts for 1%～15% of total amount.
9. according to each of claim 1-7 item, also barrier layer c can be arranged, be selected from: the barrier layer of polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyamide (PA), PVA alloy accounts for 0.7%～8% of multilayer coextrusion paper-like liquid packaging film gross thickness.
10. according to the job operation of each multilayer coextrusion paper-like liquid packaging film of claim 1-9 item, be to adopt the multi-layer co-extruded inflation film manufacturing machine blown film of extruding, its overall film thickness is: 55 microns～90 microns, and preferred 65 microns～80 microns.
11. according to claim 9 multilayer coextrusion paper-like liquid packaging film, wherein the job operation of c barrier layer is selected from: adopt the coating machine coating, with or adopt the direct coextrusion barrier layer of multi-layer co-extruded extruder c layer, require 1 described a, b layer co-extrusion to form a, c, b or a, b, c multilayer coextrusion paper-like liquid packaging film with aforesaid right.
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| CN2010102444028A CN101905776A (en) | 2010-07-26 | 2010-07-26 | Multilayer coextrusion paper-like liquid packaging film |
| CN201010529280.7A CN102079418B (en) | 2010-07-26 | 2010-10-27 | Multi-layer co-extruded paper-like liquid packaging film |
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| CN2010102444028A CN101905776A (en) | 2010-07-26 | 2010-07-26 | Multilayer coextrusion paper-like liquid packaging film |
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| US4503102A (en) * | 1982-01-20 | 1985-03-05 | Du Pont Of Canada, Inc. | Pouches of ethylene-α-olefin copolymer/ethylene-vinyl acetate copolymer blends |
| JPH0826262A (en) * | 1994-07-18 | 1996-01-30 | Asahi Chem Ind Co Ltd | Milk package |
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| EP2186634A1 (en) * | 2008-11-13 | 2010-05-19 | Amcor Flexibles Transpac N.V. | Curl-free polyolefin-based packaging film used for the packaging of sterile products |
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| CN201456504U (en) * | 2009-05-15 | 2010-05-12 | 湖北慧狮塑业股份有限公司 | Multifunctional polyolefin co-extruded composite membrane |
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| CN102079418B (en) | 2014-03-26 |
| CN102079418A (en) | 2011-06-01 |
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