Paper plastic glue-free composite bidirectional stretching polypropylene film and its preparation method

A polypropylene film, biaxial stretching technology, applied in chemical instruments and methods, applications, household appliances, etc., can solve the problems of difficulty, the composition of the film layer and its preparation method are not disclosed, and it is difficult to reproduce in production, and achieves heat sealing. High strength, saving glue method and gluing process, and simple structure

Active Publication Date: 2007-10-24
GUANGDONG DECRO PACKAGE FILMS +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, although this patent discloses a paper-plastic glue-free composite structure, it does not disclose the specific composition of the film layer and its preparation method. In actual use, it is difficult for people to carry out accurate production reproduction. In the paper-plastic composite technology It is difficult to promote and apply in the field

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  • Paper plastic glue-free composite bidirectional stretching polypropylene film and its preparation method
  • Paper plastic glue-free composite bidirectional stretching polypropylene film and its preparation method
  • Paper plastic glue-free composite bidirectional stretching polypropylene film and its preparation method

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Embodiment 1

[0027] In embodiment 1 shown in Fig. 1:

[0028] Functional layer 1 is 70% ethylene-butene copolymer 4090S plus 30% ethylene-butene copolymer maleic anhydride graft modification 9015;

[0029] The core layer 3 is 98% isotactic polypropylene FS3011 plus 2% antistatic agent ASPA2446;

[0030] Surface layer 5 is matting material DUL3636DP17.

[0031] The total thickness of the prepared product is 20 μm, the thickness of functional layer 1 is 8 μm, and the thickness of matting layer is 3 μm.

[0032] The preparation method is: premix the screened raw material A (including the main raw material, modified material, and additive masterbatch) according to the designed formula, stir evenly, and after the resin is measured, send it into the extruder to be processed into plasticized and homogenized F The melt B is transported through pipelines, filtered by filters, distributed through runners and dies, and cast into thick slices C through casting sheet G, and the thick slices are stret...

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Abstract

The invention relates to a paper plastic glue free compound bi-directional stretch polypropylene film, which has coextruded surfaced, core layer, functional layer being able to compound with paper, pre-print paper or thin film, with upper sub surface between the surface and core layer, and lower sub surface between the core layer and the functional layer. All of them are extruded through bi-directional stretch. It feeds formulated material into the extruder to melt, which is co-extruded into thick plates through slip cast, then the thick plates being stretched in both directions into thin film, which are processed through corona and flame into mother film, through effective treatment to get the final thin film product. It is simple in structure, strong in thermal sealing, high in stripping strength.

Description

technical field [0001] The invention relates to a biaxially stretched polypropylene film for paper-plastic glue-free compounding and a preparation method thereof. Background technique [0002] At present, there are mainly the following methods for paper-plastic compounding in industry: one is the glue method (dry compounding and wet compounding), but this method will emit more toxic solvents into the atmosphere and seriously pollute the environment; The second is a solvent-free compounding method, and the initial tack of the composite product obtained by this method is extremely low; the third is a pre-coating method, although this method can use no solvent, but there are many processes and increase costs. In addition, the time dependence of the peel strength of the adhesive layer of the composite product obtained by the above method is obvious. Therefore, in order to overcome the shortcomings of paper-plastic composites in the prior art, Chinese patent ZL03226653.7 disclos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/10B32B27/32B32B27/18B29D7/01B29C69/02B29C47/06B29C71/00B29C71/02B29K31/00
Inventor 徐文树朱健民邹晓明罗启扬
Owner GUANGDONG DECRO PACKAGE FILMS
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