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Biaxially-oriented polypropylene (BOPP) tangle membrane and preparation method thereof

A conjunctival film and surface layer technology, applied in the field of packaging materials, can solve the problems of application limitation, PVC is not environmentally friendly, PE uniaxially stretched twisted conjunctival film is expensive, etc., and achieves the effect of reducing the de-orientation force and excellent comprehensive performance.

Inactive Publication Date: 2013-02-13
温州市金田塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, PVC twisted film and PE one-way stretched twisted film are mostly used in the market for twisted packaging. Because PVC is not environmentally friendly, PE one-way stretched twisted film is expensive and other factors, its application is subject to many restrictions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of BOPP twist film, comprises core layer, first surface layer and second surface layer, and first surface layer is positioned between core layer and second surface layer;

[0019] The material of the core layer includes 10% by weight of low molecular weight hydrogenated petroleum resin, 2% by weight of antistatic agent, 10% by weight of random PP (i.e. random copolymerized polypropylene), and the rest is homogeneous PolyPP (that is, the weight percentage is 78%); wherein the antistatic agent is preferably monoglutinate and alkylamine, and of course other antistatic agents can also be used.

[0020] The material of the first surface layer is a slip agent with a weight percentage of 2%, and the rest is a homopolymerized PP (that is, a weight percentage of 98%); wherein the slip agent is preferably glass microspheres+plexiglass, and the use of the slip agent It is convenient to cut the film into lithographic film, and of course other slip agents can also be used.

...

Embodiment 2

[0029] A kind of BOPP twist film, comprises core layer, first surface layer and second surface layer, and first surface layer is positioned between core layer and second surface layer;

[0030] The material of the core layer includes 10% by weight of low molecular weight hydrogenated petroleum resin, 4% by weight of antistatic agent, 18% by weight of random PP, and the rest is homopolymerized PP (that is, 68% by weight %);

[0031] The material of the first surface layer is a slip agent with a weight percentage of 4%, and the rest is homopolymerized PP (that is, the weight percentage is 96%);

[0032] The material of the second surface layer is 5% by weight of anti-adhesive agent, and the rest is homopolymerized PP (ie 95% by weight).

[0033] The preparation method of above-mentioned BOPP twist film, comprises the following steps:

[0034] (1) Ingredients: The raw materials of each component required for the core layer, the first surface layer and the second surface layer a...

Embodiment 3

[0040] A kind of BOPP twist film, comprises core layer, first surface layer and second surface layer, and first surface layer is positioned between core layer and second surface layer;

[0041] The material of the core layer includes 20% by weight of low molecular weight hydrogenated petroleum resin, 3% by weight of antistatic agent, 16% by weight of random PP, and the rest is homopolymerized PP (that is, 61% by weight %);

[0042] The material of the first surface layer is a slip agent with a weight percentage of 3%, and the rest is a homopolymerized PP (that is, a weight percentage of 97%);

[0043] The material of the second surface layer is anti-sticking agent with a weight percentage of 4%, and the rest is homopolymerized PP (that is, the weight percentage is 96%);

[0044] The preparation method of above-mentioned BOPP twist film, comprises the following steps:

[0045] (1) Ingredients: The raw materials of each component required for the core layer, the first surface ...

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PUM

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Abstract

The invention provides a biaxially-oriented polypropylene (BOPP) tangle membrane which comprises a core layer, a first surface layer and a second surface layer, wherein the first surface layer is positioned between the core layer and the second surface layer. Material of the core layer comprises, by weight percentage, 10-30% of low molecular weight hydrogenated petroleum resin, 2-4% of antistatic agents, 10-18% of atactic propene polymer (PP), and the balance homopolymerized propene polymer (PP). Material of the first surface layer comprises, by weight percentage, 2-4% of slipping agents, and the balance homopolymerized PP. Material of the second surface layer comprises, by weight percentage, 3-5% of anti-sticking agents, and the balance homopolymerized PP. The degree of crystallinity of the BOPP tangle membrane is lowered, low molecular material having good intermiscibility with the PP is added to the BOPP tangle membrane, the microstructure of the BOPP tangle membrane is more densified, macromolecules are easy to tangled up to achieve preferably tangling force during tangling, and vertical and horizontal mechanical properties are nearly consistent. The BOPP tangle membrane has the advantages of being light in weight, excellent in combination property, capable of achieving high-speed large-scale production and the like. The invention further provides a preparation method of the BOPP tangle membrane.

Description

Technical field [0001] The invention belongs to the field of packaging materials, and specifically relates to a BOPP twisted film and a preparation method thereof. Background technique [0002] As BOPP technology becomes more and more mature, the competition among production companies becomes more and more intense, and various functional BOPP films have become the focus of research and development by major companies. Since various special-shaped candies and cold drinks have a unique appearance to increase their selling points, most of them use twist packaging instead of traditional heat-sealing packaging. At present, most of the twist packaging on the market is PVC twist film and PE unidirectional stretch twist film. Due to factors such as PVC not being environmentally friendly and PE unidirectional stretch twist film being expensive, its application is subject to many restrictions. Contents of the invention [0003] In view of the above-mentioned shortcomings of the prio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B29C69/00B29C47/00B29C55/14B29L7/00
Inventor 刘文顺付兴华
Owner 温州市金田塑业有限公司
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