Paper plastic glue-free composite on line repeated spraying bidirectional stretching polypropylene film and its preparation method

A technology of polypropylene film and biaxial stretching, applied in the direction of synthetic resin layered products, layered products, chemical instruments and methods, etc., can solve the problems of undisclosed film layer composition and its preparation method, difficult production reproduction, difficulty, etc. problems, to achieve the effect of facilitating manufacturing promotion, high heat sealing strength, and energy saving

Active Publication Date: 2009-09-02
GUANGDONG DECRO PACKAGE FILMS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 field of paper-plastic composite technology There are certain difficulties in the promotion and application of

Method used

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  • Paper plastic glue-free composite on line repeated spraying bidirectional stretching polypropylene film and its preparation method
  • Paper plastic glue-free composite on line repeated spraying bidirectional stretching polypropylene film and its preparation method
  • Paper plastic glue-free composite on line repeated spraying bidirectional stretching polypropylene film and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The composition of functional layer 6 is: 70% ethylene-butene copolymer, maleic anhydride graft modified product of 30% ethylene-butene copolymer, wherein, the content of butene in the ethylene-butene copolymer is 30%, and the graft ratio of the maleic anhydride graft modified product of ethylene-butene copolymer is 0.5%.

[0034] The composition of the upper surface layer 5 is: 100% isotactic polypropylene (the isotacticity is 95%, and the melt index is 3 grams / 10 minutes);

[0035] The composition of the core layer 3 is: 99.75% isotactic polypropylene (97% isotacticity, 3 g / 10 minutes melt index), 2500 ppm glyceryl monostearate;

[0036] The composition of the lower surface layer 1 is: a total of high-density polyethylene (melt index is 0.05 g / 10 minutes) and ethylene-propylene copolymer (melt index is 7 g / 10 minutes) which accounts for 99.2% of the surface layer according to the configuration of 9:11. Mixture, 8000ppm of antioxidant 1010.

[0037] The total thickne...

Embodiment 2

[0050] The components of functional layer 6 are: 50% ethylene-butene copolymer, 20% maleic anhydride graft modification of ethylene-butene copolymer, 30% P-125, wherein ethylene-butene copolymer The content of butene in the product is 10%, and the graft ratio of the maleic anhydride graft modified product of ethylene-butene copolymer is 1.2%.

[0051] The composition of the upper surface layer 5 is: 100% isotactic polypropylene (the isotacticity is 95%, and the melt index is 3 grams / 10 minutes);

[0052] The ingredients of the next surface layer 2 and the last surface layer 4 are: 99.8% isotactic polypropylene (96% isotacticity, 2.5 grams / 10 minutes melt index), 2000ppm glyceryl monostearate;

[0053] The composition of core layer 3 is: the isotactic polypropylene of 99.7% (isotacticity is 96%, melt index is 2.5 grams / 10 minutes), the glyceryl monostearate of 2000ppm, the methylenebisstearamide of 1000ppm ;

[0054] The composition of the lower surface layer 1 is: 99.8% isot...

Embodiment 3

[0073] The components of the functional layer 6 are: 80% ethylene-octene copolymer, 19% maleic anhydride graft modification of ethylene-butene copolymer, 1% P-125, wherein ethylene-octene copolymer The content of octene in the product is 20%, and the graft rate of the maleic anhydride graft modified product of ethylene-butene copolymer is 2%.

[0074] The composition of the upper surface layer 5 is: 100% isotactic polypropylene (the isotacticity is 95%, and the melt index is 3 grams / 10 minutes);

[0075] The ingredients of the next surface layer 2 and the last surface layer 4 are: 99.8% isotactic polypropylene (95% isotacticity, 2 grams / 10 minutes melt index), 2000ppm glyceryl monostearate;

[0076] The composition of the core layer 3 is: 99.75% isotactic polypropylene (95% isotacticity, 2 g / 10 minutes melt index), 2000 ppm glyceryl monostearate, 500 ppm erucamide;

[0077] The composition of the lower surface layer 1 is: 99.8% isotactic polypropylene (95% isotacticity, 3 g / 1...

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Abstract

The invention discloses an on-line lamination biaxially stretched polypropylene film for paper-plastic glue-free compounding and a preparation method thereof. The film comprises a biaxially stretched upper surface layer, a core layer, a lower surface layer and It is a functional layer that can be directly laminated with paper, pre-printed paper or another film containing this layer by spraying on the upper surface layer; there is an upper surface layer between the upper surface layer and the core layer, and a layer between the core layer and the lower surface layer. There is a lower surface layer between them; the composition of the lower surface layer can be the same as that of the upper surface layer or the functional layer. The preparation method of the present invention is as follows: the selected raw materials are sent into the extruder to be processed into a melt, and the melt is co-extruded into a thick sheet through a casting cast sheet, and the thick sheet is biaxially stretched into a film, and the film is subjected to corona treatment or Flame treatment to form the mother film, the mother roll is subjected to aging treatment, and finally cut into film products. The on-line lamination biaxially stretched polypropylene film of the present invention can realize glue-free lamination of paper and plastic, saves energy, is environmentally friendly and hygienic, and at the same time, this product also has the advantages of high heat-sealing strength and high peeling strength, which is beneficial to manufacture and promotion.

Description

technical field [0001] The invention relates to an on-line lamination biaxially stretched polypropylene film for paper-plastic glue-free compounding and a preparation method thereof. Background technique [0002] Common biaxially stretched polypropylene film production processes include flat film method and bubble tube method, especially the flat film method, and the flat film method is divided into two types: stepwise biaxial stretching and synchronous biaxial stretching. The main method is two-time stretching, that is, first longitudinal stretching and then transverse stretching; this patent relates to the in-line pouring method in the processing method of biaxially stretched polypropylene film. [0003] 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 or volatiles, which will pollute the environment The second is the sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/20B32B27/30B29C69/02B29C59/10B29C59/08
Inventor 徐文树朱健民
Owner GUANGDONG DECRO PACKAGE FILMS
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