A kind of PLA modified material and its manufacture method

A technology for modifying materials and raw materials, applied in the chemical industry, can solve the problems of casting polylactic acid film technology and immature equipment, and achieve the effects of improving toughness, reducing brittleness, and good heat sealing performance

Active Publication Date: 2017-02-15
SHANGHAI ZIHUA FILM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the above-mentioned defects, overcomes the problems of the current cast polylactic acid film process and immature equipment, improves its production formula, and obtains a soft product with high tensile strength

Method used

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  • A kind of PLA modified material and its manufacture method
  • A kind of PLA modified material and its manufacture method
  • A kind of PLA modified material and its manufacture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] PLA modified material 1#, formula components:

[0048]

[0049] PLAJoncryl ADR-4368 resin and polyester are block-polymerized through twin-screws, and components such as flexible chain molecules are introduced during the manufacturing process.

Embodiment 2

[0051] PLA modified material 2#, formula components:

[0052]

[0053]

[0054] The PLA resin and polyester are block-polymerized through twin-screws, and components such as flexible chain molecules are introduced during the manufacturing process.

Embodiment 3

[0056] PLA modified material 3#, formula components:

[0057]

[0058] The PLA resin and polyester are block-polymerized through twin-screws, and components such as flexible chain molecules are introduced during the manufacturing process.

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PUM

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Abstract

The invention relates to a preparation method of a PLA (poly lactic acid) modified material. The preparation method of the PLA modified material is characterized in that block polymerization is carried out on PLA resin and polyester by virtue of a double screw and flexible chain molecules are introduced in a preparation process. The preparation method of the PLA modified material has the advantages that a brand new formula is adopted, raw materials are modified, the size of a processing window is increased, free end groups are controlled, raw material stability is improved, performances of a film material are stable and a guarantee period of the film materials is at least three years; besides, by virtue of modification on the resin, softness, high tensile strength and other properties of a thin film hygienic material can be met.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a film used in disposable sanitary products, in particular to a PLA modified material and a manufacturing method thereof. Background technique [0002] At present, the films used in disposable hygiene products are all polyethylene cast films. Polyethylene cast film has a uniform thickness, but due to its high price, it is rarely used at present. In addition, according to the existing formulation system, there are problems of poor fluidity and low yield. [0003] Polylactic acid (PLA) is a new type of material made of starch raw materials proposed by renewable plant resources (such as corn). Since this material is derived from biological materials such as corn stalks, the product has antibacterial and breathable properties. The most important feature is that it can be decomposed into CO2 and water under composting conditions. Reduce white contamination or disposal costs of dispo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00C08G81/02C08L87/00
Inventor 郭长华许雍汪洋陆军张爱华
Owner SHANGHAI ZIHUA FILM TECH CO LTD
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