Biodegradable film and manufacturing method thereof

A biodegradable film and biodegradable technology, applied in the field of biodegradable film and its manufacturing, can solve the problems of low heat sealing stability, loss of use performance of packaging bags, decrease in heat sealing strength, etc. The effect of long-term stability of sealing performance

Inactive Publication Date: 2020-01-07
深圳万达杰环保新材料股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current technical bottleneck is that when the PLA content in the single-layer PBAT+PLA biodegradable film is greater than 35%, the heat-sealing stability is very low, and the heat-sealing strength drops sharply after 6 months, and the packaging bag loses its usability

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  • Biodegradable film and manufacturing method thereof
  • Biodegradable film and manufacturing method thereof

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Embodiment Construction

[0031] In order to make the purpose, features and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0032] While the preferred embodiments of the embodiments of the present application have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once the basic inventive concept is understood. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications that fall within the scope...

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Abstract

The invention provides a biodegradable film and a manufacturing method thereof. The biodegradable film comprises an inner layer, a middle layer and an outer layer; the middle layer is arranged betweenthe inner layer and the outer layer, and the outer layer or the inner layer is composed of the following components by the weight percentage: 40%-100% of PBAT, 0%-35% of PLA, 0%-30% of starch, 0%-30%of inorganic powder and 0%-15% of a modifying auxiliary agent. The middle layer is composed of the following components by the weight percentage: 35%-94.5% of PLA, 0%-64.5% of PBAT, 0%-30% of starch,0%-30% of inorganic powder and 0.5%-5% of a modifying auxiliary agent. The biodegradable film prepared by adding 35% or less of PLA into PBAT with high melt strength and stable heat sealing performance as an inner layer and an outer layer to drive the PBAT with low melt strength and high yield strength to be added with 35% or more of PLA as an intermediate layer is high in yield strength and longin heat sealing performance stable period.

Description

technical field [0001] The application relates to the field of plastic films, in particular to a biodegradable film and a manufacturing method thereof. Background technique [0002] Most of the traditional plastics have stable properties and are not easy to be rapidly degraded by various environmental factors in nature, so that there is a serious harm to the environment caused by waste plastics, that is, the so-called white pollution. Since the beginning of the 21st century, protecting the global environment, building a resource-recycling society, and taking the path of sustainable development have become global hot spots and urgent tasks. Biodegradable plastics can be digested and decomposed into carbon dioxide, water, other biomass and inorganic substances by microbial erosion in a short period of time, and are low-load materials for the environment. At present, the raw materials of biodegradable packaging films used in the market are mainly PBAT (terephthalic acid-adipic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/18B32B27/08C08L67/02C08L67/04C08L3/02B29C48/08B29C48/21B29L9/00
CPCB29L2009/00B32B27/08B32B27/18B32B27/36B32B2250/03B32B2250/244B32B2307/7163B29C48/08B29C48/21C08L67/02C08L2201/06C08L2203/16C08L2205/02C08L2205/03C08L67/04C08L3/02
Inventor 骆东魏达裴小勤蒋明达许国敏黄镇伟杨小强李欢欢
Owner 深圳万达杰环保新材料股份有限公司
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