CN2516336Y - High-extrusion combined strength bination undrawn polypropylene film - Google Patents
High-extrusion combined strength bination undrawn polypropylene film Download PDFInfo
- Publication number
- CN2516336Y CN2516336Y CN 01224136 CN01224136U CN2516336Y CN 2516336 Y CN2516336 Y CN 2516336Y CN 01224136 CN01224136 CN 01224136 CN 01224136 U CN01224136 U CN 01224136U CN 2516336 Y CN2516336 Y CN 2516336Y
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- China
- Prior art keywords
- film
- layer
- polypropylene film
- extrusion
- compound
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model relates to a co-extrusion compound intensity non-tensile polypropylene film. The film is a three-layer compound structure including a modified polyethylene compound layer, a polypropylene middle layer and a copolymerized polypropylene heat-seal layer. The utility model is characterized in that the film preserves the properties of excellent optical performance; high heat-seal intensity and easy opening as the properties in the common co-extrusion non-tensile polypropylene film; the purpose of separating the film from the coated PE is realized; thereby, the demand of producing high intensity compound film produced with the method of co-extrusion is fulfilled.
Description
Technical field the utility model belongs to a kind of coextrusion un-stretched polypropylene film.
The coextrusion un-stretched polypropylene film of the common use of background technology is three layers of ABA or ABC structure, and three layers are pp material.This kind Film Optics function admirable, the heat seal strength height, the bag after-opening is good, is very suitable for adopting the dry type complex method to produce laminated film as the hot sealing layer material.It is higher that but the dry type complex method is extruded the complex method cost relatively, and be used for BOPP/ printing ink //during the CPP structure, total is the PP material, when winter temperature was low, the packaging bag embrittlement broke especially easily.For addressing the above problem, between BOPP and CPP, adopt and extrude compoundly, concrete structure is: BOPP/ printing ink/LDPE/CPP, PE interlayer wherein can improve the toughness of laminated film, avoids the packaging bag embrittlement to break, and can also reduce cost simultaneously.But PE and common CP P extrude compound after between the two peel strength low especially, can't satisfy instructions for use.
The summary of the invention the purpose of this utility model is to provide the height of a kind of excellent bonding performance, peel strength height and excellent optical performance to extrude the combined strength bination un-stretched polypropylene film.
The purpose of this utility model is achieved in that a kind of high combined strength bination un-stretched polypropylene film of extruding, and it is characterized in that the three-layer composite structure of this film for being made of modified poly ethylene composite bed and polypropylene intermediate layer and COPP hot sealing layer.Three-layer composite structure adopts multi-layer co-extruded method one-shot forming.
The three-layer composite structure polypropylene film that adopts PE/PP/ copolymerization PP material to make, because PE and PP belong to two kinds of different types of polymers, both different in kinds, even at high temperature also very difficult together compatible, the interface is apparent in view.In order to improve both compatibilities, the utility model has been selected a kind of PE material through modification, make its microcosmic molecular structure similar, can reach the molecule of going up largely during with intermediate layer PP coextrusion and be entangled with, twine, therefore realized good combination between the two to the film-grade polypropylene.
Owing to adopt technique scheme, height is extruded the combined strength bination un-stretched polypropylene film and has not only been kept common coextrusion un-stretched polypropylene film excellent optical performance, the heat seal strength height, the good advantage of bag after-opening, but also reached the purpose that is difficult to peel off with coated PE, thereby can satisfy the requirement of extruding the compound film of complex method production high strength.This product can be widely used in the packing of jelly, biscuit, dilated food, clothing etc.
Appended drawings is a generalized section of the present utility model.
The specific embodiment further specifies the utility model below in conjunction with accompanying drawing.
As shown in the figure, polypropylene film is to be made of composite bed (1), intermediate layer (2) and hot sealing layer (3), and three-layer composite structure is to adopt the three-layer co-extruded equipment one-shot forming that goes out, and wherein composite bed adopts the modified polyethylene material with property; The HOPP material is adopted in the intermediate layer; Hot sealing layer adopts the COPP material.
With the BOPP that above mentions is the English name abbreviation of bidirectional stretching polypropylene film, CPP is the English name abbreviation of un-stretched polypropylene film, PE is the English name abbreviation of polyvinyl resin, LDPE is the English name abbreviation of ldpe resin, and PP is the English name abbreviation of acrylic resin.
Claims (1)
1, a kind of high combined strength bination un-stretched polypropylene film of extruding is characterized in that this film is for constituting three-layer composite structure by modified poly ethylene composite bed and polypropylene intermediate layer and COPP hot sealing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01224136 CN2516336Y (en) | 2001-05-18 | 2001-05-18 | High-extrusion combined strength bination undrawn polypropylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01224136 CN2516336Y (en) | 2001-05-18 | 2001-05-18 | High-extrusion combined strength bination undrawn polypropylene film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516336Y true CN2516336Y (en) | 2002-10-16 |
Family
ID=33640526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01224136 Expired - Fee Related CN2516336Y (en) | 2001-05-18 | 2001-05-18 | High-extrusion combined strength bination undrawn polypropylene film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516336Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175625B (en) * | 2005-05-12 | 2010-09-29 | 东洋钢钣株式会社 | Process for production of brittle resin film and brittle resin film |
| CN102741036A (en) * | 2010-02-05 | 2012-10-17 | Rkw欧洲公司 | Rigid film having high puncture resistance and tear propagation resistance |
| CN104206489A (en) * | 2014-08-20 | 2014-12-17 | 常熟市汇康食品厂 | Moisture-proof biscuits |
-
2001
- 2001-05-18 CN CN 01224136 patent/CN2516336Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101175625B (en) * | 2005-05-12 | 2010-09-29 | 东洋钢钣株式会社 | Process for production of brittle resin film and brittle resin film |
| CN102741036A (en) * | 2010-02-05 | 2012-10-17 | Rkw欧洲公司 | Rigid film having high puncture resistance and tear propagation resistance |
| CN104206489A (en) * | 2014-08-20 | 2014-12-17 | 常熟市汇康食品厂 | Moisture-proof biscuits |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |