CN2647770Y - Separating laminated cocoating film - Google Patents
Separating laminated cocoating film Download PDFInfo
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- CN2647770Y CN2647770Y CN 200320100390 CN200320100390U CN2647770Y CN 2647770 Y CN2647770 Y CN 2647770Y CN 200320100390 CN200320100390 CN 200320100390 CN 200320100390 U CN200320100390 U CN 200320100390U CN 2647770 Y CN2647770 Y CN 2647770Y
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Abstract
The utility model discloses a multilayer coflow film with high barrier property, making PVA as barrier layer. The inner side and the outer side of the barrier layer are respectively provided with one or two plastic membrane layer. A bond layer is arranged between the barrier layer and the adjacent plastic membrane layer. The utility model has good barrier property, high intensity between layers, unsegregativeness of layers. The leftover and the waste can be degradated and recycled; thereby the utility model is nontoxic and harmless to the environment.
Description
Technical field
The utility model relates to a kind of packing, specifically, is a kind of high barrier multilayer casting films altogether.
Background technology
At present, along with the development in market and improving constantly of people's lives, people also constantly propose new requirement to the requirement of commodity packaging, the packing of some frozen food, aquatic products, high-temperature cooking food, rare medicinal herbs, essence and flavoring agent, various beverage, drinks, tealeaves, coffee, oily food, high-accuracy mechanical component and instrument etc. particularly, require packing not only to have favorable waterproof property, also should have good barrier performance simultaneously, promptly prevent the performance of organic solvent infiltration.For satisfying customer's requirement, each manufacturer is all endeavouring to research and develop novel barrier packaging material and products thereof.
The waterproof Obstruct membrane that packaging field is commonly used is PVDC film and EVOH film at present.Wherein PVDC (polyvinylidene chloride has another name called Vingon) film has higher barrier, but because the leftover pieces of PVDC film and waste are difficult to recycle, emits HCl gas during burning disposal, can cause environmental pollution.America and Europe and Taiwan have turned to uses EVOH (ethylene-vinyl alcohol copolymer) film, and the EVOH film has advantage nontoxic, free from environmental pollution, but it is by the rubbing method preparation, and its complicated operation, production efficiency are low.
Summary of the invention
The purpose of this utility model provides a kind of multilayer casting films altogether, and it has the excellent waterproof barrier property.
For achieving the above object, the utility model is taked following scheme: the utility model adopts PVA (polyvinyl alcohol) as barrier layer.The inboard and the outside at barrier layer have one deck or double-ply plastic film layers respectively.
For the convenience that illustrates, the following noun of specific justice:
The inboard of barrier layer is meant the side that common casting films contacts with packing material, and the outside of barrier layer is meant the opposite side that common casting films contacts with environment.
With one deck of the inboard next-door neighbour of barrier layer be interior one deck, with interior one deck next-door neighbour be interior two layers, with interior two layers of next-door neighbour be interior three layers; With one deck of barrier layer outside next-door neighbour be outer one deck, with outer one deck next-door neighbour be outer two layers, with outer two layers of next-door neighbour be outer three layers.
Can be according to packing material and environmental conditions different, plastic film layers also can be different, can be in PE film (polyethylene film), PP film (polypropylene screen), PA film (polyamide membrane), PC film (polycarbonate membrane), PET (polyethylene terephthalate) film, PBT (polybutylene terephthalate) film one or more usually.
In order to improve the bind strength of each layer of the utility model, can also between barrier layer and adjacent plastic film layers, be provided with the layer of adhesive layer.At this moment, interior one deck and outer one deck are adhesive phase, and interior two layers, interior three layers, outer two layers, outer three layers is plastic film layers.
Adhesives can be one or both in EVA (vinyl-vinyl acetate copolymer), EAA (ethylene-acrylic acid copolymer), polyacrylates, the maleic anhydride.
The thickness of PVA barrier layer is 1～10 μ m, and the thickness of each plastic film layers is 1～20 μ m, and the thickness of adhesive phase is 1～10 μ m.
The utility model has the advantages that: barrier property is good; Interlaminar strength height, each layer are not easily separated; Leftover pieces and waste degradable and recycling, nontoxic to environment.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model
Fig. 2 is the structural representation of embodiment 6 of the present utility model
Fig. 3 is the flow scheme of embodiment 6 of the present utility model
Fig. 4 is the structural representation of embodiment 8 of the present utility model
The specific embodiment
Please refer to Fig. 1.In the present embodiment, the high barrier multilayer altogether casting films by outer one deck 1, barrier layer 2, interior one deck 3 totally three layers constitute.Barrier layer 2 is PVA, and its thickness is 5 μ m.Outer one deck 1 is the PE film of 3 μ m, and interior one deck 3 is PP films of 3 μ m.
Embodiment 2-5
Please refer to table 1.These embodiment also be by outer one deck 1, barrier layer 2, interior one deck 3 totally three layers constitute.In these embodiments, outer one deck 1 and interior one deck 3 have adopted the plastic sheeting different with embodiment 1.And the thickness of each layer is identical with embodiment 1, and barrier layer 2 is identical with embodiment 1.
The structural table of table 1 embodiment 2
| Outer one | | Interior one | |
| | PE | PVA | PE |
| | PC | PVA | PP |
| | PET | PVA | PBT |
| | PBT | PVA | PET |
Please refer to Fig. 2.In the present embodiment, the high barrier multilayer altogether casting films by outer two layer 4, outer one deck 1, barrier layer 2, interior one deck 3, interior two layer 5 totally five layers constitute.Outer two layer 4 and interior two layer 5 is plastic film layers, and outer one deck 1 and interior one deck 3 are adhesive phases.Barrier layer 2 is PVA (polyvinyl alcohol), and its thickness is 8 μ m.Outer two layer 4 is PE films of 3 μ m, and interior two layer 5 also is the PE film of 3 μ m.Outer one deck 1 is the EVA of 1 μ m, and interior one deck 3 also is the EVA of 1 μ m.
Please refer to Fig. 3.During the preparation present embodiment, an extruder squeezes PVA barrier layer 2, and another extruder squeezes PE plastic film layers 4 and 5, the three extruder EVA bonding coats 1 and 3.The runner of PE is divided into two strands symmetrically in head, two aspects of difference, promptly outer two layer 4 and interior two layer 5.In like manner, the runner of EVA also is divided into two strands symmetrically in head, two aspects of difference, promptly outer one deck 1 and interior one deck 3.The benefit of doing like this is only to have used three extruders, just can moulding five layers casting films.The another one advantage of such production process is to need not to add entry or organic solvent.
The difference of present embodiment and embodiment 6 is that outer two layer 4 is PP films of 3 μ m, and outer one deck 1 is the EAA of 1 μ m, and the material of other each layer is identical with embodiment 6 with thickness.Present embodiment needs 5 extruders to extrude earlier, then the casting films of five layers of curtain coatings.
Embodiment 8
Present embodiment has increased outer three layer 6 and interior three layer 7 again and has been total to the two layers of plastic thin films layer on the basis of embodiment 6.This is two-layer all to be the PP film of 3 μ m.Like this, present embodiment constitutes by seven layers, is successively from outside to inside: outer three layer 6 (the PP films of 3 μ m), outer two layer 4 (the PE films of 3 μ m), outer one deck 1 (EVA of 1 μ m), barrier layer 2 (PVA of 8 μ m), interior one deck 3 (EVA of 1 μ m), interior two layer 5 (the PE films of 3 μ m), interior three layer 7 (the PP films of 3 μ m).
The described high barrier multilayer of embodiment 1-8 is casting films altogether, through long-term test and on probation, all has excellent waterproof property and barrier property, and preparation is simple, nontoxic pollution-free.
Claims (7)
1. a high barrier multilayer is total to casting films, and it is characterized in that: PVA has one deck or double-ply plastic film layers as barrier layer respectively in the inboard and the outside of barrier layer.
2. high barrier multilayer according to claim 1 is casting films altogether, it is characterized in that, is provided with the layer of adhesive layer between barrier layer and adjacent plastic film layers.
3. high barrier multilayer according to claim 1 is casting films altogether, and it is characterized in that: described plastic sheeting is one or more in PE film, PP film, PA film, PC film, PET film, the PBT film.
4. high barrier multilayer according to claim 2 is casting films altogether, and it is characterized in that: described adhesives is one or both in EVA, EAA, polyacrylates, the maleic anhydride.
5. high barrier multilayer according to claim 1 and 2 is casting films altogether, and it is characterized in that: the thickness of described barrier layer is 1～10 μ m.
6. high barrier multilayer according to claim 1 and 2 is casting films altogether, and it is characterized in that: the thickness of described plastic film layers is 1～20 μ m.
7. high barrier multilayer according to claim 2 is casting films altogether, and it is characterized in that: the thickness of described adhesive phase is 1～10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100390 CN2647770Y (en) | 2003-10-13 | 2003-10-13 | Separating laminated cocoating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320100390 CN2647770Y (en) | 2003-10-13 | 2003-10-13 | Separating laminated cocoating film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2647770Y true CN2647770Y (en) | 2004-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320100390 Expired - Lifetime CN2647770Y (en) | 2003-10-13 | 2003-10-13 | Separating laminated cocoating film |
Country Status (1)
| Country | Link |
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| CN (1) | CN2647770Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982931A (en) * | 2011-09-06 | 2013-03-20 | 弗兰克·魏 | Partial coating of electronic ceramic component and method for making the same |
| CN105252867A (en) * | 2015-10-12 | 2016-01-20 | 宁波华丰包装有限公司 | Multilayer composite film and preparation method thereof |
| CN109233106A (en) * | 2018-09-25 | 2019-01-18 | 宁波瑞成包装材料有限公司 | Production method of low-cost high-barrier polypropylene film |
| CN109233105A (en) * | 2018-09-25 | 2019-01-18 | 宁波瑞成包装材料有限公司 | Production method of stretch-resistant high-barrier polypropylene film |
| CN110126402A (en) * | 2019-03-28 | 2019-08-16 | 四川三合坡面科技有限公司 | A kind of degradative membrane of multilayer degradation |
| CN110239181A (en) * | 2019-07-10 | 2019-09-17 | 佛山市巴盛诺新材料科技有限公司 | A kind of polyvinyl alcohol biodegrade high-barrier plastic film material and preparation method thereof |
-
2003
- 2003-10-13 CN CN 200320100390 patent/CN2647770Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982931A (en) * | 2011-09-06 | 2013-03-20 | 弗兰克·魏 | Partial coating of electronic ceramic component and method for making the same |
| CN105252867A (en) * | 2015-10-12 | 2016-01-20 | 宁波华丰包装有限公司 | Multilayer composite film and preparation method thereof |
| CN105252867B (en) * | 2015-10-12 | 2017-12-26 | 宁波华丰包装有限公司 | A kind of multilayer complex films and preparation method thereof |
| CN109233106A (en) * | 2018-09-25 | 2019-01-18 | 宁波瑞成包装材料有限公司 | Production method of low-cost high-barrier polypropylene film |
| CN109233105A (en) * | 2018-09-25 | 2019-01-18 | 宁波瑞成包装材料有限公司 | Production method of stretch-resistant high-barrier polypropylene film |
| CN110126402A (en) * | 2019-03-28 | 2019-08-16 | 四川三合坡面科技有限公司 | A kind of degradative membrane of multilayer degradation |
| CN110239181A (en) * | 2019-07-10 | 2019-09-17 | 佛山市巴盛诺新材料科技有限公司 | A kind of polyvinyl alcohol biodegrade high-barrier plastic film material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131013 Granted publication date: 20041013 |