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

A technology of polypropylene film and biaxial stretching, which is applied in the direction of chemical instruments and methods, applications, household appliances, etc., can solve the problems of undisclosed preparation methods of film layer components, difficult production reproduction, and difficulty, so as to facilitate manufacturing promotion, High heat sealing strength and energy saving effect

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

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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

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The composition of functional layer 1 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%.

[0038] The composition of the core layer 3 is: 99.75% isotactic polypropylene (97% isotacticity, 3 g / 10 minutes melt index), 2500 ppm glyceryl monostearate;

[0039] The composition of the surface layer 5 is: a blend of high-density polyethylene (melt index is 0.05 g / 10 minutes) and ethylene-propylene copolymer (melt index is 7 g / 10 minutes) that accounts for 99.2% of the surface layer according to the configuration of 9:11 substances, 8000ppm antioxidant 1010.

[0040] The total thickness of the prepared product is 20 μm, the thickness of the functional layer 1 is 6 μm, and the functional layer 1 accounts for 30% of the total weight of the film.

...

Embodiment 2

[0052] The composition of functional layer 1 is: 50% ethylene-butene copolymer, 20% maleic anhydride graft modification of ethylene-butene copolymer, 30% P-125, in which 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 2%.

[0053] 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;

[0054] 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 ;

[0055] The composition of surface layer 5 is: the isotactic polypropylene of 99.8% (isotacticity is 96%, and melt index is 3 grams / 10 minutes), 2000ppm silicon dioxide (SiO 2 ).

[0056] The total thickness of the prepared...

Embodiment 3

[0074] The composition of functional layer 1 is: 80% ethylene-octene copolymer, 19% maleic anhydride graft modification of ethylene-butene copolymer, 1% P-125, in which ethylene-octene copolymer The content of octene in the product is 20%, and the graft ratio of the maleic anhydride graft modified product of ethylene-butene copolymer is 1%.

[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 surface layer 5 is: the isotactic polypropylene of 99.8% (isotacticity is 96%, and melt index is 3 grams / 10 minutes), 2000ppm silicon dioxide (SiO 2 ).

[0078] The total thickness of the prepared product is 18 μm, the thickness of the funct...

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Abstract

The present invention discloses one kind of biaxially stretched polypropylene film for no-adhesive paper-plastic combination and its preparation process. The film includes one surface layer, one core layer, one functional layer for direct combination with paper material, one second upper layer between the surface layer and the core layer, and second lower surface layer between the core layer and the functional layer. The film is prepared through plasticizing the material to form melt in an extruder, conveying the melt in a pipeline, filtering in a filter, forming film in a mold head, corona treatment or flame treatment to form mother film, 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 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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IPC IPC(8): B32B27/32B32B27/20B32B27/30B32B27/28B32B7/10B29C69/02B29C55/14B29D7/01
Inventor 徐文树朱健民邹晓明罗启扬
Owner GUANGDONG DECRO PACKAGE FILMS
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