CN101525071A - Seven-layer coextrusion composite high-separation packaging film - Google Patents
Seven-layer coextrusion composite high-separation packaging film Download PDFInfo
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- CN101525071A CN101525071A CN200910011252A CN200910011252A CN101525071A CN 101525071 A CN101525071 A CN 101525071A CN 200910011252 A CN200910011252 A CN 200910011252A CN 200910011252 A CN200910011252 A CN 200910011252A CN 101525071 A CN101525071 A CN 101525071A
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Abstract
The invention relates to a seven-layer coextrusion composite high-separation packaging film which comprises polyethylene (PE) resin, ethane and vinyl alcohol copolymer (EVOH) resin, a connecting material (TIE) and polyamide (PA), each layer of the packaging film comprises one of the four kinds of resin, the thickness of the packaging film is -20-15 mu m, and the packaging film is processed by a coextrusion film blowing machine by adopting multilayer coextrusion composite technology. The seven-layer coextrusion composite high-separation packaging film has the advantages of high-separation gas tightness, environmental protection, high mechanical property, high explosion resistance, strong puncture resistance, strong tear resistance, oil resistance, moisture resistance, high-temperature cooking resistance, low-temperature refrigeration resistance, quality assurance, fresh preservation, odor preservation, low cost, good heat sealability, high flexibility and good transparency.
Description
Technical field
The present invention relates to a kind of flexible packing material, more particularly, relate to MULTILAYER COMPOSITE high-barrier, impermeable food package film.
Background technology
In plastic flexible packaging material, packaging for foodstuff is its maximum application market, and along with the raising of the level of consumption, also more and more harsher to the requirement of packaging for foodstuff, this has impelled the multi-functional packing film Development of Materials of high-barrier.On ordinary meaning, the structure of packing film goods depends on the functional requirement of packing to film, for packaging for foodstuff, packing generally must satisfy the demand of market the following aspects: 1. because oxygen can cause the oxidation deterioration of fat and protein, so the ability of excellent blocking oxygen will be arranged; 2. because of the entering or volatilize and to cause the variation of food taste of steam, must have excellent aqueous vapor obstructing capacity; 3. for to prevent that peculiar smell from entering or the volatilization of fragrance, guarantee the food original flavor, need the ability of excellent obstruct fragrance; 4. for satisfying the needs of airtight preservation, good heat sealability be arranged; 5. satisfy the requirement of sterilization, avoid germ to exist and destroy food, have certain resistance to heat; 6. for the needs of decorate attractive in appearance and the information that commodity are necessary, good printing be arranged; 7. be protection food, satisfy the needs of carrying and transportation, must have stronger mechanical property; 8. requirement of other some optical property aspects etc.Therefore, produce packing, lean on the material of single variety can't satisfy these requirements, lean on the multi-layer co-extruded compound collocation of different material to satisfy these demands with above characteristic.To be poly-vinyl resin, the second layer be ethene and vinyl alcohol copolymer resin with the 4th layer for being connected material, the 3rd layer for the five-layer co-squeezing high-barrier complex film of prior art, ground floor and layer 5, and five layers thickness must be in 15.The shortcoming of five-layer co-squeezing high-barrier complex film is, it blocks water, oxygen resistance and anti-puncture ability, pulling strengrth, the anti-property fallen are poor, wastes raw MAT'L on the thickness.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of multi-layer co-extruded compound high-isolating packaging film is provided, its purpose is, this type of multilayer complex films that is primarily aimed at prior art blocks water, oxygen resistance and anti-puncture ability, pulling strengrth, the anti-property fallen are poor, problem such as waste raw MAT'L on the thickness.
In order to address the above problem, design-calculated seven-layer coextrusion composite high-separation packaging film of the present invention, it is characterized in that: described packaging film includes polyethylene (PE) resin, ethene and ethenol copolymer (EVOH) resin, is connected material (TIE) and four kinds of hybrid resins of nylon (PA), each layer in the described packaging film contains a kind of in above-mentioned four kinds of resins, the top layer of described packaging film contact packed article does not contain EVOH, described packaging film thickness 20-150 μ m adopts multi-layer co-extruded complex technique to utilize the coextrusion film blowing machinework to form.
The PE top layer has tough and tensile protective value, good hot weld envelope effect and printing ergosphere; The PA internal layer is the extraordinary chemical inertness ergosphere of high temperature resistant function, guarantees that product does not have any aspirate; The EVOH interlayer has high barrier ergosphere; Between PE and the PA articulamentum, well compound between assurance gas producing formation and the layer, lamination does not take place.Multi-layer co-extruded complex technique be two or more material under molten condition, compound being welded together in a die head.The base resin of coextru-lamination generally is high density polyethylene (HDPE) (HDPE), polypropylene resins such as (PP), and barrier resins mainly is PA, EVOH, vinylidene chloride copolymer (PVDC) etc.Because the compatibility of barrier material and heat-sealable material is generally very poor, therefore must consider the compatilizer that chooses, as the copolymer resins of esters of acrylic acid.In general coextru-lamination presses the symmetric design of five layers of ABCBA and ABCDCBA seven-layer structure, and its barrier and combined strength bination are best.
Compared with prior art, the invention has the advantages that: (1) high-barrier air-tightness: multi-layer co-extruded film can be combined into a film by the plastic co-extrusion that various functions are different, reaches the effect to high-barrier such as oxygen, water, carbon dioxide, smells.(2) environmental protection: because of not adding any adhesive agent, so noresidue agent polluted product belongs to green ring packing.(3) mechanical characteristics is strong, and anti-burst performance height, anti-puncture tear resistance are strong, in response to using multi-layer co-extruded blow molding technology, so there is not the delamination phenomenon.(4) performance is strong: oil resistant, humidity, digestion resistant, low temperature resistant freezing, guarantee the quality, fresh-keeping, protect smell.(5) cost is low: compare with glass packaging, In Aluminium Foil Packing, reach equal barriering effect, multi-layer co-extruded film has bigger advantage on cost.(6) good, the flexibility of heat sealability, the high grade of transparency are good.Therefore the present invention is having marked improvement than prior art aspect economic value and the value of service two.
The specific embodiment
Design-calculated seven-layer coextrusion composite high-separation packaging film of the present invention, include polyethylene (PE) resin, ethene and ethenol copolymer (EVOH) resin, be connected material (TIE) and four kinds of hybrid resins of nylon (PA), adopt multi-layer co-extruded complex technique to utilize the coextrusion film blowing machinework to form.
Embodiment one
The seven-layer structure of described seven-layer coextrusion composite high-separation packaging film is that (1) layer and (7) layer are EVOH for TIE, (3) layer and (5) layer for PA, (4) layer for PE, (2) and (6) layer.Proportioning PE: TIE: PA: EVOH=60: 10: 25: 5.Packaging film thickness 52 μ m.
Embodiment two
The seven-layer structure of described seven-layer coextrusion composite high-separation packaging film is that (1) layer and (7) layer are EVOH for TIE, (3) layer and (5) layer for PA, (4) layer for PE, (2) and (6) layer.Proportioning PE: TIE: PA: EVOH=70: 7: 20: 3.Packaging film thickness 60 μ m.
Embodiment three
The seven-layer structure of described seven-layer coextrusion composite high-separation packaging film is that (1) layer and (7) layer are EVOH for TIE, (3) layer and (5) layer for PA, (4) layer for PE, (2) and (6) layer.Proportioning PE: TIE: PA: EVOH=80: 6: 10: 4.Packaging film thickness 75 μ m.
Seven-layer coextrusion composite high-separation packaging film of the present invention is compared with other Obstruct membranes, has more excellent cost performance.
See the following form:
| Title | OTR oxygen transmission rate (cm 3/m 2·24h·0.1Mpa) | Moisture-vapor transmission (g/m 2·24h) | Standard | Shelf-life | Price (unit/kilogram) |
| Three-layer co-extruded film | 1120 | 216 | GB19741-200 5 GB9683 | 7 days | 18 |
| The Lile packaging film | 212 | 3.8 | GB19741-200 5 GB9683 FDA | 3 months | 65 |
| The seven-layer co-extrusion film | 236 | 3.6 | GB19741-200 5 GB9683 FDA | 3 months | 30 |
| Monofilm | 22620 | 342 | GB19741-200 5 GB9683 | 2 days | 13 |
In the above-mentioned table, described seven-layer co-extrusion film is a seven-layer coextrusion composite high-separation packaging film of the present invention.
The above; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (2)
1, a kind of seven-layer coextrusion composite high-separation packaging film, it is characterized in that: described packaging film includes poly-vinyl resin, ethene and vinyl alcohol copolymer resin, is connected material and four kinds of hybrid resins of nylon, each layer in the described packaging film contains a kind of in above-mentioned four kinds of resins, described packaging film thickness 20-150 μ m, the top layer of described packaging film contact packed article does not contain EVOH.
2, according to the described seven-layer coextrusion composite high-separation packaging film of claim 1, it is characterized in that: described packaging film contain the kind of resin and between it proportioning be:
(1) layer is ethene and vinyl alcohol copolymer resin for being connected material, (3) layer and (5) layer for nylon, (4) layer for poly-vinyl resin, (2) layer and (6) layer with (7) layer,
Poly-vinyl resin: ethene is connected material with the ethenol copolymer portions of resin: nylon=55～70: 3～8: 8～20: 15～30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910011252A CN101525071A (en) | 2009-04-23 | 2009-04-23 | Seven-layer coextrusion composite high-separation packaging film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910011252A CN101525071A (en) | 2009-04-23 | 2009-04-23 | Seven-layer coextrusion composite high-separation packaging film |
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| CN101525071A true CN101525071A (en) | 2009-09-09 |
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| CN200910011252A Pending CN101525071A (en) | 2009-04-23 | 2009-04-23 | Seven-layer coextrusion composite high-separation packaging film |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729563A (en) * | 2012-06-01 | 2012-10-17 | 朝阳佛瑞达科技有限公司 | Easily degradable paper-like novel high-barrier packaging film for UHT liquid milk |
| CN103009714A (en) * | 2012-12-05 | 2013-04-03 | 浙江德洋胶粘制品有限公司 | High-fire-retardant composite fabric and manufacturing method thereof |
| WO2015006328A1 (en) * | 2013-07-08 | 2015-01-15 | The Pictsweet Company | Slurry product filled film pouches and method of making same |
| CN104434386A (en) * | 2013-09-25 | 2015-03-25 | 重庆诚邦科技发展有限公司 | Constant-temperature cold compress bag |
| CN106042568A (en) * | 2016-06-20 | 2016-10-26 | 广东宝佳利彩印实业有限公司 | Anti-leaking pressure-resistant high-temperature-resistant high-barrier vertical food oil bag and preparation method thereof |
| CN107501704A (en) * | 2017-08-23 | 2017-12-22 | 宁波华丰包装有限公司 | EVOH high-barrier co-extrusion films |
| CN107856375A (en) * | 2017-10-25 | 2018-03-30 | 无锡市太平洋新材料股份有限公司 | A kind of boiling film for packaging for foodstuff |
| CN108045051A (en) * | 2017-12-07 | 2018-05-18 | 黄山永新股份有限公司 | A kind of uvioresistant high-barrier transparent packaging film and its production method |
| 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 |
| CN111959075A (en) * | 2020-08-26 | 2020-11-20 | 安徽省恳思惠新型材料有限责任公司 | Multi-layer co-extrusion high-barrier film applied to vacuum insulation panel packaging |
| CN116849908A (en) * | 2023-07-03 | 2023-10-10 | 安徽精良同硕塑膜科技有限公司 | High-resistance, seepage-proof and cooling collar and preparation method thereof |
-
2009
- 2009-04-23 CN CN200910011252A patent/CN101525071A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102729563A (en) * | 2012-06-01 | 2012-10-17 | 朝阳佛瑞达科技有限公司 | Easily degradable paper-like novel high-barrier packaging film for UHT liquid milk |
| CN102729563B (en) * | 2012-06-01 | 2015-01-07 | 朝阳佛瑞达科技有限公司 | Easily degradable paper-like novel high-barrier packaging film for UHT liquid milk |
| CN103009714A (en) * | 2012-12-05 | 2013-04-03 | 浙江德洋胶粘制品有限公司 | High-fire-retardant composite fabric and manufacturing method thereof |
| CN103009714B (en) * | 2012-12-05 | 2015-12-09 | 浙江德洋胶粘制品有限公司 | A kind of High-fire-retardant composite fabric and manufacture method thereof |
| WO2015006328A1 (en) * | 2013-07-08 | 2015-01-15 | The Pictsweet Company | Slurry product filled film pouches and method of making same |
| US9663281B2 (en) | 2013-07-08 | 2017-05-30 | The Pictsweet Company | Slurry product filled film pouches and method of making same |
| CN104434386A (en) * | 2013-09-25 | 2015-03-25 | 重庆诚邦科技发展有限公司 | Constant-temperature cold compress bag |
| CN106042568A (en) * | 2016-06-20 | 2016-10-26 | 广东宝佳利彩印实业有限公司 | Anti-leaking pressure-resistant high-temperature-resistant high-barrier vertical food oil bag and preparation method thereof |
| CN107501704A (en) * | 2017-08-23 | 2017-12-22 | 宁波华丰包装有限公司 | EVOH high-barrier co-extrusion films |
| CN107856375A (en) * | 2017-10-25 | 2018-03-30 | 无锡市太平洋新材料股份有限公司 | A kind of boiling film for packaging for foodstuff |
| CN108045051A (en) * | 2017-12-07 | 2018-05-18 | 黄山永新股份有限公司 | A kind of uvioresistant high-barrier transparent packaging film and its production method |
| CN108045051B (en) * | 2017-12-07 | 2019-05-14 | 黄山永新股份有限公司 | A kind of uvioresistant high-barrier transparent packaging film and its production method |
| 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 |
| CN111959075A (en) * | 2020-08-26 | 2020-11-20 | 安徽省恳思惠新型材料有限责任公司 | Multi-layer co-extrusion high-barrier film applied to vacuum insulation panel packaging |
| CN116849908A (en) * | 2023-07-03 | 2023-10-10 | 安徽精良同硕塑膜科技有限公司 | High-resistance, seepage-proof and cooling collar and preparation method thereof |
| CN116849908B (en) * | 2023-07-03 | 2024-02-09 | 安徽精良同硕塑膜科技有限公司 | High-resistance, seepage-proof and cooling collar and preparation method thereof |
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Application publication date: 20090909 |