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Disposable full-biodegradable transparent straw and preparation method thereof

An all-biological, one-time-use technology, used in table utensils, applications, home utensils, etc., can solve the problems of poor transparency, low break rate, high break rate, and achieve low cost, low break rate, and high transparency. Effect

Active Publication Date: 2021-11-16
杭州聚丰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of high breakage rate and poor transparency of fully biodegradable straws in the prior art, and to provide a disposable fully biodegradable transparent straw material. The mouth rate is low, and the transparency is above 90%, which can be used to replace the traditional polypropylene straw, which is beneficial to human health

Method used

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  • Disposable full-biodegradable transparent straw and preparation method thereof
  • Disposable full-biodegradable transparent straw and preparation method thereof
  • Disposable full-biodegradable transparent straw and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 80 parts by mass of PLA, 10 parts by mass of PCL, 5 parts by mass of PHBV, 4 parts by mass of polyglycerol fatty acid ester, 0.5 parts by mass of oleic acid amide as a lubricant, and 0.5 parts by mass of 1076 as an antioxidant were added to the mixer and mixed The mixed material is added to a twin-screw extruder with a length-to-diameter ratio of 48:1, extruded, drawn, cooled, and pelletized to obtain a special resin for fully biodegradable transparent straws. The temperature of the barrel is 160 degrees. Head temperature is 165 degrees;

[0030] Put the special resin for fully biodegradable transparent straws into the straw manufacturing unit for extrusion, shaping, pulling, cooling, and pipe cutting to obtain fully biodegradable transparent straws. The screw length-to-diameter ratio of the straw manufacturing unit is 32:1. The barrel temperature is 190 degrees , the die head temperature is 180 degrees.

[0031] The deviations of the inner and outer diameters of the o...

Embodiment 2～4

[0034] According to the process steps of Example 1, the addition amount of PCL was adjusted to 5 parts, 15 parts, and 20 parts respectively, and other conditions remained unchanged, and transparent straws were obtained. %, 85%, 80%.

Embodiment 5～7

[0036] According to the process steps of Example 1, the addition amount of PHBV is adjusted to 5 parts, 15 parts, and 20 parts, and other conditions remain unchanged, and transparent straws are obtained, and the breakage ratios are 95, 100, and 100 respectively, and the transparency is 90% respectively. , 90%, 90%.

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Abstract

The invention relates to the technical field of biodegradable materials, and discloses a disposable full-biodegradable transparent straw and a preparation method thereof.The disposable full-biodegradable transparent straw is prepared from, by mass, 80-95 parts of PLA; 5 to 20 parts of PCL; 5 to 20 parts of PHBV; 1-4 parts of polyglycerol fatty acid ester; 0.1 to 0.5 part of a lubricant; and 0.1 to 0.5 part of an antioxidant. The raw materials are subjected to melt blending, extrusion granulation, extrusion through a straw manufacturing machine, traction, cooling and cutting to obtain the transparent straw. According to the present invention, the biodegradable material PLA is adopted as the base material, and the PCL, the PHBV and the polyglycerol fatty acid ester are adopted, such that the toughness and the processability of the PLA resin are increased, and the high transparency of the PLA resin is maintained so as to provide the low breaking rate and the light transmittance of more than 90% of the prepared straw, such that the straw is the excellent PP straw substitute, the white pollution can be reduced, and the human health can be easily achieved.

Description

technical field [0001] The invention relates to the technical field of biodegradable materials, in particular to a disposable fully biodegradable transparent straw and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy and the progress of society, the pace of life of people, especially in big cities, has been accelerated day by day. Fast food has become a part of daily life and is closely related to people's lives. Fast food has brought a lot of convenience to people's life. However, the use of disposable tableware plastic products has also caused serious white pollution to the environment. These disposable tableware are difficult to recycle and are not easy to degrade in the natural environment. Health has posed a serious threat. Government departments around the world have successively formulated relevant laws and regulations to restrict the use of these non-degradable plastic products, driving the rapid develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L71/08A47G21/18
CPCC08L67/04A47G21/18C08L2205/035C08L2205/025C08L2201/06C08L71/00
Inventor 余金金徐杰周步杰宋顺刚张才亮
Owner 杭州聚丰新材料有限公司
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