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

A polypropylene film, biaxial stretching technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of no disclosure of the preparation method of film layer components, difficulty in production reproduction, difficulty, etc., Achieve the effect of being beneficial to manufacturing and promotion, high heat sealing strength and energy saving

Active Publication Date: 2008-03-26
GUANGDONG DECRO PACKAGE FILMS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

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

Examples

Experimental program
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Effect test

Embodiment 1

[0035] 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%.

[0036] 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);

[0037] The composition of the core layer 3 is: 99.75% isotactic polypropylene (97% isotacticity, 3 g / 10 minutes melt index), 2500 ppm glyceryl monostearate;

[0038] 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.

[0039] The total thickne...

Embodiment 2

[0052] 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%.

[0053] 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);

[0054] 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;

[0055] 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 ;

[0056] The composition of lower surface layer 1 is: 99.8% isotacti...

Embodiment 3

[0075] 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%.

[0076] 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);

[0077] 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;

[0078] 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;

[0079] The composition of lower surface layer 1 is: 99.8% isotactic polypropylene (isotacticity is at 95%, mel...

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Abstract

The present invention discloses one kind of biaxially stretched polypropylene film with on-line leached layer for no-adhesive paper-plastic combination and its preparation process. The film includes one base film comprising one or two biaxially stretched upper surface layers, one core layer and one or two biaxially stretched lower surface layers, and one functional film layer for direct combination with paper material. The film is prepared through forming melt with the material in an extruder, flow casting the melt to form co-extruded thick sheet, biaxially stretching to form film, corona treatment or flame treatment to form mother film, ageing treatment and cutting into the film product. The biaxially stretched polypropylene film with on-line leached layer for no-adhesive paper-plastic combination has low power consumption, environment friendship, high heat sealing strength and high stripping strength.

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] 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(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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