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Novel polylactic acid material for laminating and laminated product thereof

A technology of polylactic acid and new materials, which is applied in paper coating, textile and papermaking, fiber raw material processing, etc., can solve the problems of insufficient polylactic acid coating width and consumption, so as to reduce material cost consumption, reduce necking phenomenon, Effect of increasing melt strength

Inactive Publication Date: 2018-06-29
JIANGSU SUPLA BIOPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during processing, the polylactic acid coating width is insufficient, and the ends of both sides of the paper are not coated, and the edges need to be cut a lot to cause waste.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Dehumidify and dry polylactic acid with an optical purity of 95% until the moisture content is less than 500ppm;

[0016] (2) The dried polylactic acid and vinyl acetate copolymer, according to the ratio of each component, is polylactic acid: vinyl acetate copolymer = 70:30phr, melt blending and extruding at 150~200°C through an extruder to obtain Polylactic acid new material masterbatch;

[0017] (3) Dehumidify and dry the polylactic acid new material masterbatch until the moisture content is less than 500ppm;

[0018] (4) Mix and stir the polylactic acid new material masterbatch and polylactic acid in proportion, polylactic acid new material masterbatch: polylactic acid = 10:90phr, then add the mixture into the laminating machine, the width of the die head of the laminating machine is 1200mm;

[0019] (5) Adjust the temperature of the laminating machine. The temperature of the four sections of the body from the feed port to the film head section is: 130~150°C, 1...

Embodiment 2

[0021] (1) Dehumidify and dry polylactic acid with an optical purity greater than 99% until the moisture content is less than 500ppm;

[0022] (2) The dried polylactic acid and vinyl acetate copolymer, according to the ratio of each component, is polylactic acid: vinyl acetate copolymer = 70:30phr, melt blending and extruding at 150~200°C through an extruder to obtain Polylactic acid new material masterbatch;

[0023] (3) Dehumidify and dry the polylactic acid new material masterbatch until the moisture content is less than 500ppm;

[0024] (4) Mix and stir the polylactic acid new material masterbatch and polylactic acid in proportion, polylactic acid new material masterbatch: polylactic acid = 10:90phr, then add the mixture into the laminating machine, the width of the die head of the laminating machine is 1200mm;

[0025] (5) Adjust the temperature of the laminating machine. The temperature of the four sections of the body from the feed port to the film head section is: 13...

Embodiment 3

[0027] (1) Dehumidify and dry polylactic acid with an optical purity greater than 95% until the moisture content is less than 500ppm;

[0028] (2) The dried polylactic acid and vinyl acetate copolymer, according to the ratio of each component, is polylactic acid: vinyl acetate copolymer = 60:40phr, melt blending and extruding at 150~200°C through an extruder to obtain Polylactic acid new material masterbatch;

[0029] (3) Dehumidify and dry the polylactic acid new material masterbatch until the moisture content is less than 500ppm;

[0030] (4) Mix and stir the polylactic acid new material masterbatch and polylactic acid in proportion, polylactic acid new material masterbatch: polylactic acid = 30:70phr, and then add the mixture into the laminating machine, the width of the die head of the laminating machine is 1200mm;

[0031] (5) Adjust the temperature of the laminating machine. The temperature of the four sections of the body from the feed port to the film head section is...

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Abstract

The invention discloses a novel polylactic acid material for laminating and laminated product thereof. The material is formed by blending the following components in parts by weight: A, 60 to 99 phr of polylactic acid, and B, 1 to 40 phr of ethylene-vinyl acetate copolymer. The material has the advantages that the ethylene-vinyl acetate copolymer is added in the polylactic acid, synergistic effectis produced between the ethylene-vinyl acetate copolymer and the polylactic acid, the melt strength can be reduced, necking phenomenon can be reduced, when the material is applied to laminating process, the wide range can be increased, the problem of coating shrinkage can be improved, and material cost consumption caused by too wide cut edge after laminating can be reduced.

Description

technical field [0001] The invention relates to the technical field of polymer compounds, in particular to a new polylactic acid material used for coating. Background technique [0002] In recent years, countries around the world have paid more and more attention to environmental protection issues, including global climate change, reduction of oil resources, plastic waste pollution, etc., especially the threat posed by traditional petroleum-based plastics is an urgent problem, and the development of green high Molecular materials are the common solution direction of the world. [0003] Green polymer materials can be divided into two categories: one is bio-based polymers, and the other is biodegradable polymers. Among them, polylactic acid (Poly Lactic Acid, PLA). Polylactic acid is first fermented and converted from plant starch into lactic acid, and then polymerized. The production process is pollution-free and low energy consumption. And after use, it is discarded and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/10D21H23/50
CPCD21H19/10D21H23/50
Inventor 陈志彬骆仲奕陈辉宏
Owner JIANGSU SUPLA BIOPLASTICS CO LTD
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