Degradable polylactic acid paper cup and preparation method thereof

A technology of polylactic acid paper cups and polylactic acid, which is applied in paper, papermaking, paper coating, etc., can solve the problems of high brittleness of polylactic acid, inconvenient preparation of disposable paper cups for polylactic acid coated paper processing, and difficult bonding, etc. Effects of film processing, increased processability, and increased uniformity

Inactive Publication Date: 2019-08-30
武汉鑫亚泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, polylactic acid is brittle, and it is not easy to bond when it is used for coated paper, which is not convenient for the processing of polylactic acid coated paper and the preparation of disposable paper cups.

Method used

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  • Degradable polylactic acid paper cup and preparation method thereof
  • Degradable polylactic acid paper cup and preparation method thereof
  • Degradable polylactic acid paper cup and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of degradable polylactic acid paper cup, its preparation method comprises the steps:

[0035] (A), 100 parts by weight of polylactic acid with a molecular weight of 200,000, 25 parts of polybutylene succinate, 8 parts of citric acid ester, and 1.6 parts of vinyl bis stearamide are added to the twin-screw extruder Blending, melting, extrusion and granulation in the machine to form coated particles;

[0036] Among them, the citric acid ester is tributyl citrate, and the weight ratio of vinyl bis stearamide and tributyl citrate is 1:5; the twin-screw extruder adopts the SET-100 model, and the process temperatures of the four sections of extrusion are respectively For: 80-90°C, 120-130°C, 130-140°C, 140-150°C; the particle size range of coated particles is 1.5-2mm;

[0037] (B) Add the laminating particles into the barrel of the laminating machine, and laminating on the base paper, wherein the laminating machine adopts a single-sided laminating machine produced by D...

Embodiment 2

[0041] The difference between embodiment 2 and embodiment 1 is:

[0042] The parts by weight of the polybutylene succinate added in the step (A) is 15 parts.

Embodiment 3

[0044] The difference between embodiment 3 and embodiment 1 is:

[0045] The parts by weight of the polybutylene succinate added in the step (A) is 20 parts.

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Abstract

The invention relates to a degradable polylactic acid paper cup and a preparation method thereof. The degradable polylactic acid paper cup is prepared by using polylactic acid coated paper, wherein the coating layer of the polylactic acid coated paper is prepared from the following components in parts by weight: 100 parts of polylactic acid, 15-30 parts of poly(butylene succinate) and 6-10 parts of citrate. The poly(butylene succinate) is used as toughening resin to carry out blending modification on the polylactic acid, so that toughness of the polylactic acid resin is improved. The citrate is a non-toxic harmless plasticizer to carry out toughening modification on the polylactic acid resin, and meanwhile, compatibility of the polylactic acid and the poly(butylene succinate) is increased,and toughness of the polylactic acid and processing performance of the polylactic acid coating layer are improved.

Description

technical field [0001] The invention relates to the technical field of environmental protection tableware, in particular to a degradable polylactic acid paper cup and a preparation method thereof. Background technique [0002] Disposable tableware includes disposable cups, disposable bowls and disposable plates. Disposable tableware is widely used due to its low price, easy to carry and use, and no cleaning. Among them, disposable cups include disposable paper cups and disposable plastic cups. [0003] Disposable paper cups are mainly divided into wax-coated cups, straight-wall double-layer cups and polyethylene-coated cups according to the coating on the inner wall of the paper cup; among them, the polyethylene-coated cup is covered with polyethylene coating on the cup wall, which is a newer product. The advantage is that cold drinks and hot drinks can be handled freely, and the surface is smooth. Although polyethylene itself is non-toxic and tasteless, when it is heated f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H19/28D21H23/64
CPCD21H19/14D21H19/28D21H23/64
Inventor 唐宏霞
Owner 武汉鑫亚泰科技有限公司
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