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Oxo-biodegradable BOPP (biaxially-oriented polypropylene) film and preparation method thereof

A polypropylene film, biaxial stretching technology, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problems of product function and appearance, difficult decomposition of products, etc. Effect

Active Publication Date: 2013-02-13
ZHEJIANG KINLEAD PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biodegradation is achieved by adding modified starch, but it has a certain impact on product function and appearance, and some products are difficult to decompose eventually

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The oxidative biodegradable biaxially stretched polypropylene optical film of the present invention is prepared by selecting components of homopolypropylene 96.5% by weight, antisticking agent 2.5% AB6018PP, and oxygen-containing biodegradant 1.0% for the upper surface layer. And the melt index range of homopolypropylene is 2.6-3.2g / 10min. The core layer is made of components with weight percentages of 93% homopolypropylene, 3.0% antistatic agent, 3.0% slip agent, and 1.0% oxygen-containing biodegradation agent, and the melt index range of homopolypropylene is 2.6-3.2g / 10min. The antistatic agent is an alkylamine antistatic agent; the slip agent is an erucamide slip agent. The lower surface layer is made of components with 96.5% by weight of homopolypropylene, 2.5% of anti-sticking agent AB6018PP, and 1.0% of oxygen-containing biodegradation agent, and the melt index range of homopolypropylene is 2.6-3.2g / 10min. The thickness of the upper surface layer is controlled...

Embodiment 2

[0040]The oxidative biodegradable biaxially stretched polypropylene optical film of the present invention is prepared by selecting the upper surface layer of 97.5% by weight of homopolypropylene, 1.5% of anti-sticking agent AB6018PP, and 1.0% of oxygen-containing biodegradation agent. And the melt index range of homopolypropylene is 2.6-3.2g / 10min. The core layer is made of components with 97% by weight of homopolypropylene, 1.0% of antistatic agent, 1.0% of slip agent and 1.0% of oxygen-containing biodegradation agent, and the melt index range of homopolypropylene is 2.6-3.2g / 10min. The antistatic agent is an alkylamine antistatic agent; the slip agent is an erucamide slip agent. The lower surface layer is made of components with 97.5% by weight of homopolypropylene, 1.5% of anti-sticking agent AB6018PP, and 1.0% of oxygen-containing biodegradation agent, and the melt index range of homopolypropylene is 2.6-3.2g / 10min. The thickness of the upper surface layer is controlle...

Embodiment 3

[0050] The oxidative biodegradable biaxially stretched polypropylene double-sided heat-sealing film of the present invention is prepared by selecting the components by weight percentage of 97.5% of copolymerized polypropylene, 1.5% of anti-sticking agent AB6018CPP, and 1.0% of oxygen-containing biodegradation agent for the upper surface layer. become. The core layer is made of components with weight percentages of 95% homopolypropylene, 2.0% antistatic agent, 2.0% slip agent, and 1.0% oxygen-containing biodegradation agent, and the melt index range of homopolypropylene is 2.6-3.2g / 10min. The antistatic agent is an alkylamine antistatic agent; the slip agent is an erucamide slip agent. The lower surface layer is made of components with weight percentages of 97.5% of copolymerized polypropylene, 1.5% of anti-sticking agent AB6018CPP, and 1.0% of oxygen-containing biodegradation agent. The thickness of the upper surface layer is controlled to be 1.0μ, the thickness of the core ...

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Abstract

The invention discloses an oxo-biodegradable BOPP (biaxially-oriented polypropylene) film and a preparation method thereof, belonging to the technical field of the processing of BOPP films. The oxo-biodegradable BOPP film comprises an upper surface layer, a sandwich layer and a lower surface layer, and is prepared by the following steps of: adding 0.5-1.0 percent of an oxygen-containing biodegradable agent and other constituents into the upper surface layer, the sandwich layer and the lower surface layer, melting and extruding by utilizing a double-screw extruder at low temperature of 220-230 DEG C, and then biaxially stretching on a Germany Bruckner machine. The structure of the traditional equipment is not changed in the invention, at the same time, the oxo-biodegradable BOPP film can solve the problem of white pollution, can not change the function and appearance of the traditional BOPP and produce harmful substances to the environment during decomposition process, and has the advantages of controlled degradation period, non-toxicity and the like.

Description

technical field [0001] The invention relates to an oxidative biodegradable biaxially stretched polypropylene film and a manufacturing method thereof, belonging to the technical field of biaxially stretched polypropylene film processing. Background technique [0002] There are generally four types of existing plastic waste disposal methods: traditional landfill, incineration, recycling, and composting. Studies have confirmed that it takes more than 400 years for plastics to slowly decompose, so traditional burial and composting cannot fundamentally solve environmental pollution. Incineration of waste plastics will produce a large amount of carbon dioxide and toxic gases, which will aggravate environmental pollution and the greenhouse effect. More importantly, the above processing methods are limited to the situation where waste plastics are collected. As an excellent packaging material, biaxially oriented polypropylene film (BOPP film) is widely used in the packaging of sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/32
Inventor 陈利锋尹望林虞万金陈华任通余序安张爱民
Owner ZHEJIANG KINLEAD PACKAGING MATERIAL
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