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Degradable paper cup and preparation method thereof

A paper cup and degradable film technology, applied in the field of paper cup manufacturing, can solve the problems of long time required for complete degradation of paper cups and slow degradation speed, and achieve the effects of accelerating the degradation speed, increasing the degradation speed, and accelerating the breakage of the main chain.

Active Publication Date: 2020-08-25
武汉鑫永安纸塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PLA has good degradation performance, its degradation rate is slow, and it takes a long time for paper cups to completely degrade

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 is a degradable paper cup disclosed by the present invention and its preparation method. The degradable paper cup includes a cup body and a degradable film coated on the surface of the cup body. The degradable film includes the following components by weight: polyethyl alcohol 80 parts of acid, 20 parts of tapioca starch, 15 parts of polyvinyl alcohol, 7.5 parts of acetic anhydride, 6 parts of trehalose, 4.5 parts of methyl orthoformate, 4 parts of photosensitive polypropylene particles, 3.5 parts of hydroxyethyl cellulose, epoxy type 2 parts of compatibilizer and 2 parts of organotin stabilizer;

[0040] The preparation method of photosensitive polypropylene particles is as follows: 1) Heating 10 parts by weight of ethyl acetate to 80°C, then adding 4 parts of atactic polypropylene to the hot solution of ethyl acetate, stirring until the atactic polypropylene is completely Dissolve to prepare A solution; 2) Add 2 parts by weight of ethanol into a clean con...

Embodiment 2

[0051] Example 2 is a degradable paper cup disclosed by the present invention and its preparation method. The difference from Example 1 is that the degradable film includes the following components in parts by weight: 70 parts of polyglycolic acid, 15 parts of tapioca starch , 10 parts of polyvinyl alcohol, 5 parts of acetic anhydride, 4 parts of trehalose, 3 parts of methyl orthoformate, 3 parts of photosensitive polypropylene particles, 2 parts of hydroxyethyl cellulose, 1 part of epoxy compatibilizer and organic tin 1 part of stabilizer.

Embodiment 3

[0052] Example 3 is a degradable paper cup disclosed by the present invention and its preparation method. The difference from Example 1 is that the degradable film includes the following components in parts by weight: 90 parts of polyglycolic acid, 25 parts of tapioca starch , 20 parts of polyvinyl alcohol, 10 parts of acetic anhydride, 8 parts of trehalose, 6 parts of methyl orthoformate, 5 parts of photosensitive polypropylene particles, 5 parts of hydroxyethyl cellulose, 3 parts of epoxy compatibilizer and organic tin 3 parts of stabilizer.

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PUM

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Abstract

The invention relates to a degradable paper cup and a preparation method thereof. The degradable paper cup comprises a cup body and a degradable film coating the surface of the cup body. The degradable film comprises the following components in parts by weight: 70-90 parts of polyglycolic acid; 15-25 parts of cassava starch; 10-20 parts of polyvinyl alcohol; 5-10 parts of acetic anhydride; 4-8 parts of trehalose; 3-6 parts of methyl orthoformate; 2-5 parts of hydroxyethyl cellulose; 1-3 parts of a compatilizer; and 1-3 parts of a stabilizer. The preparation method specifically comprises the following steps of: S1, preparing raw paper; S2, preparing a coating material; S3, performing film pressing and covering; and S4, preparing the paper cup: splitting film-coated paper, and then placing the split paper in a mold to be curled and molded to obtain the paper cup. The paper cup prepared according to the formula and the preparation method disclosed by the invention has a relatively high degradation speed.

Description

technical field [0001] The invention relates to the technical field of paper cup manufacture, in particular to a degradable paper cup and a preparation method thereof. Background technique [0002] A paper cup is a paper container with a cup-shaped appearance. Paper cups for frozen food have strong low temperature resistance and can hold ice cream, jam and butter, etc. Paper cups for hot drinks have strong high temperature resistance and can hold boiling water. Paper cups are characterized by safety, sanitation, lightness and convenience, so they are widely used in public places such as restaurants, restaurants, and tourist attractions. The production method of paper cups on the market is to mechanically process white paper made of chemical wood pulp, and then cover a layer of polyethylene plastic film on the surface of the cardboard. However, the molecular structure of polyethylene material is stable, and it is difficult to be degraded by natural light and heat. It takes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H11/00D21H17/67D21H17/68D21H17/66D21H17/06D21H17/14D21H17/15C08L67/04C08L3/02C08L9/04C08L5/00C08L1/28C08J5/18B65D3/06
CPCD21H27/10D21H11/00D21H17/675D21H17/68D21H17/66D21H17/06D21H17/14D21H17/15C08J5/18B65D3/06C08J2367/04C08J2403/02C08J2429/04C08J2405/00C08L1/28Y02W90/10Y02A40/90
Inventor 董腾王振
Owner 武汉鑫永安纸塑有限公司
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