CN104816525A - High-barrier plastic flexible-package composite material easy to tear - Google Patents
High-barrier plastic flexible-package composite material easy to tear Download PDFInfo
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- CN104816525A CN104816525A CN201510211553.6A CN201510211553A CN104816525A CN 104816525 A CN104816525 A CN 104816525A CN 201510211553 A CN201510211553 A CN 201510211553A CN 104816525 A CN104816525 A CN 104816525A
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Abstract
The invention discloses a high-barrier plastic flexible-package composite material easy to tear. The material is formed by lamination of a plastic film base material subjected to damage treatment and a high barrier layer film. A plurality of micro through holes or non-through holes are formed in the surface of the plastic film base material subjected to damage treatment. The high barrier layer film is formed by co-extrusion lamination of a PA (polyamide) layer, an EVOH (ethylene vinyl-alcohol copolymer) barrier layer and a PA layer, an inner heat sealing layer composed of a gluing layer and a heat seal layer is co-extruded on one side face serving as the inner side face, and a gluing layer and a printing layer are co-extruded on the other side face servicing as the outer side face. The transparent composite material for flexible packages meets requirements on high barrier, high moisture resistance and high gas resistance, has high tenacity and strength and is convenient to open.
Description
Technical field
The present invention relates to packaging material field, particularly a kind of high-barrier, tearability plastic flexible package composite.
Background technology
At present, every field gets more and more to the requirement of packaging material, particularly food, pharmaceutical packing material, require that high-barrier, high resistant are wet, high-gas resistance, high tenacity, high strength, there is transparent appearance etc., and the packaging material existed at present include barrier layer and aluminizer all has the mutual compound of adhesive layer to form between interior each functional layer, this packaging material film production cycle is grown and cannot meet existing professional technique standard-required, itself there is high, the opaque technical problem of cost; Some only comprises one deck barrier layer, 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, there is oxygen flow and the higher technical problem of permeability rate in this structure, shelf-life is short, and gas permeability causes packaged product quality to reduce.And this encapsulant is difficult to tear or open in some cases, common way carries out local mechanical damage at the sealing position of packaging bag, or the edge sealing of packaging bag is cut into zigzag, is convenient to consumer and tears in the indentation, there at this edge.It is thorough that the defect of these methods is due to breach process, even if often cause the embarrassment being also difficult to tear packaging bag along breach.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high-barrier, tearability plastic flexible package composite.
The technical problem that the present invention solves can realize by the following technical solutions: a kind of high-barrier, tearability plastic flexible package composite, formed by the plastic film substrate processed through damage and high-obstruction Film laminated, there is some fine perforation or non-through hole in the described plastic film substrate surface through damage process, described high-obstruction is by polyamide PA layer, ethylene-vinyl alcohol copolymer EVOH barrier layer and the coextru-lamination of polyamide PA layer are formed, with the heat seal internal layer that a side is wherein made up of adhesive layer and hot sealing layer for medial surface co-extrusion is shaped with, and be shaped with adhesive layer and printed layers as lateral surface through co-extrusion by another side.
Preferably, there is 15-800 fine perforation and have the non-through hole of plastic film substrate thickness more than 1/3 degree of depth in described plastic film substrate every square centimeter, the surface mixing through damage process.
Preferably, described printed layers is one of them of polypropylene PP, polyethylene terephtalate or polythene PE.
Preferably, described adhesive layer is introducing polyolefin A DMER, the anhydride modified linear low density of polyethylene polymer LLDPE of polar functional group or one of them of anhydride modified low density polyethylene polymer LDPE by graft reaction.
Preferably, described high-obstruction film is made up of PP|ADMER|PA|EVOH|PA|ADMER|PE7 Rotating fields.
The beneficial effect of above technical scheme is adopted to be: a kind of high-barrier provided by the invention, tearability plastic flexible package composite have carried out damaging process to base film surface, make this plastic flexible package composite when not losing original function, from any position of larger specific region, just can open packing material by the strength of finger simply.The advantages such as high-obstruction plastic sheeting provides high-barrier, high resistant wets, high-gas resistance, high tenacity, high strength, thus make this composite not only have high barrier but also have the advantages such as tearability, be the desirable substitute products of existing plastic flexible package composite, there are good market prospects.
Detailed description of the invention
The following detailed description of the preferred embodiment of the present invention.
A kind of high-barrier of the present invention, tearability plastic flexible package composite are formed by the plastic film substrate processed through damage and high-obstruction Film laminated, there is some fine perforation or non-through hole in the described plastic film substrate surface through damage process, described high-obstruction is made up of polyamide PA layer, ethylene-vinyl alcohol copolymer EVOH barrier layer and the coextru-lamination of polyamide PA layer, with the heat seal internal layer that a side is wherein made up of adhesive layer and hot sealing layer for medial surface co-extrusion is shaped with, and be shaped with adhesive layer and printed layers as lateral surface through co-extrusion by another side.
The present invention has carried out damaging process to base film surface, make this plastic flexible package composite when not losing original function, there is provided consumer when unlatching packing material, can from any position of larger specific region, just can open packing material by the strength of finger simply, be the desirable substitute products of existing plastic flexible package composite, there are good market prospects
High barrier plastic sheeting technical scheme provided by the invention, in the middle of have employed two-layer polyamide PA, wrapped folder is combined with ethylene-vinyl alcohol copolymer EVOH and forms the packing film with three layers of barrier layer, wherein both PA and EVOH compatibility is good, just can well be in conjunction with without the need to any adhesive
Another feature of the present invention is the fragility defect that polyamide PA also effectively improves ethylene-vinyl alcohol copolymer EVOH existence, make it toughness to strengthen, obtain obdurability packaging film, not cracky, layering, swelling, itself can make the packaging material becoming any low dose
The present invention can make transparent packaging film material, and glossiness is good, is suitable as high-grade transparent flexible packing material, and its glacing flatness and intensity, toughness are all better than existing product.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (5)
1. high-barrier, a tearability plastic flexible package composite, is characterized in that, formed by the plastic film substrate processed through damage and high-obstruction Film laminated,
describedthrough the plastic film substrate every square centimeter of existence in surface of damage process
somefine perforation or non-through hole,
describedhigh-obstruction is made up of polyamide PA layer, ethylene-vinyl alcohol copolymer EVOH barrier layer and the coextru-lamination of polyamide PA layer, with the heat seal internal layer that a side is wherein made up of adhesive layer and hot sealing layer for medial surface co-extrusion is shaped with, and be shaped with adhesive layer and printed layers as lateral surface through co-extrusion by another side.
2. high-barrier according to claim 1, tearability plastic flexible package composite, is characterized in that: described plastic film substrate every square centimeter, the surface mixing through damage process exists 15-800 fine perforation and has the non-through hole of plastic film substrate thickness more than 1/3 degree of depth.
3. high-barrier according to claim 1, tearability plastic flexible package composite, is characterized in that: described printed layers is polypropylene PP, polyethylene terephtalate or polythene PE.
4. high-barrier according to claim 1, tearability plastic flexible package composite, is characterized in that: described adhesive layer refers to introduces polyolefin A DMER, the anhydride modified linear low density of polyethylene polymer LLDPE of polar functional group or anhydride modified low density polyethylene polymer LDPE by graft reaction.
5. the high-barrier according to Claims 2 or 3 or 4, tearability plastic flexible package composite, is characterized in that: described composite structure is respectively the plastic film substrate through damage process from outside to inside | PP|ADMER|PA|EVOH|PA|ADMER|PE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211553.6A CN104816525A (en) | 2015-04-30 | 2015-04-30 | High-barrier plastic flexible-package composite material easy to tear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211553.6A CN104816525A (en) | 2015-04-30 | 2015-04-30 | High-barrier plastic flexible-package composite material easy to tear |
Publications (1)
| Publication Number | Publication Date |
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| CN104816525A true CN104816525A (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510211553.6A Pending CN104816525A (en) | 2015-04-30 | 2015-04-30 | High-barrier plastic flexible-package composite material easy to tear |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023206800A1 (en) * | 2022-04-25 | 2023-11-02 | 母亲食品(安吉)有限公司 | High-temperature-resistant high-barrier anti-curling composite film, preparation method therefor and use thereof |
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| CN2688640Y (en) * | 2003-10-13 | 2005-03-30 | 吴旭东 | Easily-tearing plastic flexible packing composite materials |
| EP1525979A1 (en) * | 2003-10-24 | 2005-04-27 | Amcor Flexibles Europe A/S | One-portion pack |
| CN2913229Y (en) * | 2005-06-12 | 2007-06-20 | 浙江比例包装股份有限公司 | High-obstruct seepage proof plastic-aluminum composite membrane for liquid state dairy product packing |
| CN101100123A (en) * | 2006-07-06 | 2008-01-09 | 郭瑞林 | Seven-layer co-extrusion high-isolating packaging film |
| CN101758959A (en) * | 2009-12-30 | 2010-06-30 | 上海展骋高分子材料有限公司 | Five-layer co-extrusion high barrier liquid packaging film and preparation method thereof |
| CN101966772A (en) * | 2010-09-01 | 2011-02-09 | 丹东鑫马高科技塑料包装有限公司 | Plastic flexible packaging film with high obstruction |
| CN201761759U (en) * | 2010-04-21 | 2011-03-16 | 江阴宝柏包装有限公司 | Novel cold forming easy-peeling film |
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2015
- 2015-04-30 CN CN201510211553.6A patent/CN104816525A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2688640Y (en) * | 2003-10-13 | 2005-03-30 | 吴旭东 | Easily-tearing plastic flexible packing composite materials |
| EP1525979A1 (en) * | 2003-10-24 | 2005-04-27 | Amcor Flexibles Europe A/S | One-portion pack |
| CN2913229Y (en) * | 2005-06-12 | 2007-06-20 | 浙江比例包装股份有限公司 | High-obstruct seepage proof plastic-aluminum composite membrane for liquid state dairy product packing |
| CN101100123A (en) * | 2006-07-06 | 2008-01-09 | 郭瑞林 | Seven-layer co-extrusion high-isolating packaging film |
| CN101758959A (en) * | 2009-12-30 | 2010-06-30 | 上海展骋高分子材料有限公司 | Five-layer co-extrusion high barrier liquid packaging film and preparation method thereof |
| CN201761759U (en) * | 2010-04-21 | 2011-03-16 | 江阴宝柏包装有限公司 | Novel cold forming easy-peeling film |
| CN101966772A (en) * | 2010-09-01 | 2011-02-09 | 丹东鑫马高科技塑料包装有限公司 | Plastic flexible packaging film with high obstruction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023206800A1 (en) * | 2022-04-25 | 2023-11-02 | 母亲食品(安吉)有限公司 | High-temperature-resistant high-barrier anti-curling composite film, preparation method therefor and use thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |