Uvioresistant BOPP (Biaxially Oriented Polypropylene) film and preparation process thereof

A technology of polypropylene film and biaxial stretching, which is applied in the direction of synthetic resin layered products, layered products, chemical instruments and methods, etc., which can solve the problem of not being able to protect the printed matter in the film product from ultraviolet damage, low transparency of the film, and limited application and other issues to achieve low cost, prevent degradation, and reduce damage

Inactive Publication Date: 2011-11-23
ANHUI GUOFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The biaxially oriented polypropylene film in the prior art is a common packaging film, which does not block ultraviolet rays, will gradually age under ultraviolet radiation, and cannot protect the printed matter in the film product from ultraviolet rays. Cannot be used outdoors for a long time
[0003] In the prior art, the anti-ultraviolet film is generally produced by coating an anti-ultraviolet coating on the surface of the film or using a silane-based copolymerized cross-linked polyolefin. This process is relatively complicated, the cost is high, and the film transparency is not high, which limits its use. Applications where high transparency is required

Method used

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  • Uvioresistant BOPP (Biaxially Oriented Polypropylene) film and preparation process thereof
  • Uvioresistant BOPP (Biaxially Oriented Polypropylene) film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The heat-sealing layer and the ordinary printing layer add additives according to the existing formula, that is, the components of the ordinary printing layer are 3% anti-blocking masterbatch and 97% homopolypropylene by weight percentage, and the components of the heat-sealing layer are by weight The percentages are calculated as 3% anti-blocking masterbatch and 97% polypropylene copolymer or polypropylene copolymer.

[0026] The formula of the ultraviolet absorbing layer is calculated by weight percentage as 1% ultraviolet absorbing masterbatch, 2% antistatic masterbatch, and 97% homopolypropylene.

[0027] The UV absorbing masterbatch is a mixture of 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole and copolymerized polypropylene, and the weight ratio of the two is 3.5-4.0 : 6.5-6.0.

[0028] According to the following production process for production:

[0029] a. UV-absorbing layered raw material homopolypropylene, antistatic masterbatch, and UV-ab...

Embodiment 2

[0035] Add additives to the heat-sealing layer and ordinary printing layer according to the existing formula. The formula of the ultraviolet absorbing layer is 2% ultraviolet absorbing masterbatch, 3% antistatic masterbatch, and 95% homopolypropylene.

[0036] The UV absorbing masterbatch is a mixture of 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole and copolymerized polypropylene, and the weight ratio of the two is 3.5︰6.0 ; According to 4% of the weight of the UV-absorbing masterbatch, add a UV stabilizer, that is, a hindered amine light stabilizer.

[0037] According to the following production process for production:

[0038] a. UV-absorbing layered raw material homopolypropylene, antistatic masterbatch, and UV-absorbing masterbatch are sent to the main extruder to be heated into a molten state after drying and proportioning; heat-sealing layer raw material binary copolymerized polypropylene and anti-blocking masterbatch The common printing layer raw mat...

Embodiment 3

[0046] Add additives to the heat-sealing layer and ordinary printing layer according to the existing formula. The formula of the ultraviolet absorbing layer is 3% ultraviolet absorbing masterbatch, 2% antistatic masterbatch, and 95% homopolypropylene. The UV absorbing masterbatch is a mixture of 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole and copolymerized polypropylene, the weight ratio of the two is 4.0︰6.5 ; According to 5% of the weight of the UV-absorbing masterbatch, add a UV stabilizer, that is, a hindered amine light stabilizer.

[0047] According to the following production process for production:

[0048] a. UV-absorbing layered raw material homopolypropylene, antistatic masterbatch, and UV-absorbing masterbatch are sent to the main extruder to be heated into a molten state after drying and proportioning; heat-sealing layer raw material binary copolymerized polypropylene and anti-blocking masterbatch The common printing layer raw material, copoly...

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Abstract

The invention discloses an uvioresistant BOPP (Biaxially Oriented Polypropylene) film and a preparation process thereof. The uvioresistant BOPP film consists of a middle layer, an inner surface layer and an outer surface layer, the middle layer is an ultraviolet absorbing layer, the inner surface layer is a heat-sealing layer and the outer surface layer is a common printing layer, wherein the ultraviolet absorbing layer comprises the following components in percentage by weight: 1-3% of ultraviolet absorption master batch, 2-3% of antistatic agent and 94-97% of homopolymer polypropylene; the common printing layer comprises the following components in percentage by weight: 3% of antiblocking agent and 97% of homopolymer polypropylene; and the heat-sealing layer comprises the following components in percentage by weight: 3% of antiblocking agent, 97% of binary homopolymer polypropylene or ternary homopolymer polypropylene. The uvioresistant BOPP film disclosed by the invention has the advantages of uvioresistant performance, high transparency, simple processing technique and the like.

Description

technical field [0001] The invention relates to a plastic film for packaging and a manufacturing process thereof, and more specifically relates to a biaxially stretched polypropylene film with the ability to isolate ultraviolet rays for packaging. Background technique [0002] The biaxially oriented polypropylene film in the prior art is a common packaging film, which does not block ultraviolet rays, will gradually age under ultraviolet radiation, and cannot protect the printed matter in the film product from ultraviolet rays. It cannot be used outdoors for a long time. [0003] In the prior art, an anti-ultraviolet film is generally produced by coating an anti-ultraviolet coating on the surface of the film or using a silane-based copolymerized cross-linked polyolefin. This process is relatively complicated, the cost is high, and the film transparency is not high, which limits its use. Applications where high transparency is required. Contents of the invention [0004] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/32B32B27/18B32B33/00
Inventor 陈铸红王红兵孙善卫汪中祥孟琴李永荃
Owner ANHUI GUOFENG PLASTIC
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