Two-way stretching degradable film and preparation method thereof

A biaxially stretched and degradable film technology, which is applied to chemical instruments and methods, flat products, and other household appliances, can solve problems such as heat-sealing strength and surface smoothness, difficulty in degradation, and negative environmental impacts.
CN113172974AInactive Publication Date: 2021-07-27HAINAN SHINER IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HAINAN SHINER IND
Publication Date
2021-07-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a two-way stretching degradable film, which comprises a layer A, a layer B and a layer C; wherein the layer A is prepared from, by mass, 83%-85% of heat sealing master batch A, 2%-3% of slipping agent, 2%-3% of anti-sticking agent A, 3%-5% of antistatic agent A and 4%-10% of polylactic acid; the layer B comprises the following raw materials in percentage by mass: 80-90% of polylactic acid, 1-5% of an initiator and 5-15% of maleic anhydride; and the layer C is prepared from the following raw materials in percentage by mass: 85 to 88 percent of heat-sealing master batch C, 2 to 5 percent of anti-sticking agent C and 3 to 5 percent of an antistatic agent C; and 2-10% of polylactic acid. The modified polylactic acid and the modified polypropylene are compounded, so that other properties of the film greatly meet the requirements of the existing cigarette packaging film while the degradable requirement is met. The invention also provides a preparation method of the two-way stretching degradable film.
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Description

technical field

[0001] The invention belongs to the technical field of polymer films, and in particular relates to a biaxially stretched degradable film and a preparation method thereof. Background technique

[0002] BOPP cigarette film is also known as biaxially oriented polypropylene cigarette film, referred to as cigarette film, which is co-extruded and stretched from a variety of polypropylene functional materials. Cigarette film has high transparency and gloss, non-toxic material, stable molecular structure, and has a certain barrier function to odor and moisture, so it is an ideal material for cigarette packaging.

[0003] The main components of traditional cigarette films are polyolefins extracted from petroleum, and their degradation will take at least a hundred years, which brings a great burden to the environment. On January 19, 2020, the National Development and Reform Commission and the Ministry of Ecology and Environment issued a new version of the plastic rest...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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