Plastic foam sheet material of poly lactic acid as suction plastic, and preparation method

Abstract

This invention relates to a method for preparing polylactic acid foamed plastic, especially polylactic acid foamed plastic sheet material for sucking-plasticization. The raw materials for the sheet material are: polylactic acid resin 100 parts, chain extender 0.2-2 parts, nucleating agent 0.1-5 parts, foamer 0.3-2.5 parts, toughener 0.5-15 parts, reinforcer 0.5-5 parts, and antioxidant 0.1-1 part. The method comprises: extruding the raw materials without the foamer to obtain master batch, adding the foamer, extruding, stretching unidirectionally, and shaping, cutting, spreading, coiling and packaging. The foamed plastic sheet material has good mechanical properties and obstructive ability, and is biodegradable, thus the cost performance is high. The sucking-plasticized products can be used to manufacture bottles for cosmetics, pesticides and drinks, food packaging containers, dishwares, trays and vacuum-shaped products.

Description

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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AI Technical Summary

Benefits of technology

This patented method allows create open cell structures made from lactic acid polymer that break down quickly when exposed to water or other liquids over time without leaving any residue behind on its surface. These sheets have excellent properties like strength, durability, flexibility, impact resistance, heat insulation, soundproofness, odor barrier ability, and environmental friendliness compared with existing methods involving bubble formation during manufacturing processes.

Problems solved by technology

This patents discusses how making better quality biopolymers like poly(L)-actic)acid could help save our planet’s natural resources while promoting their future usage. While current methods involve producing large amounts of waste at disposal sites, this problem arising from the lack of efficient recovery techniques makes developing a suitable solution that reduces costs without compromiseing safety concerns over ecologically friendly environments.