Molding method of bio-based filler modified polylactic acid composite material product

A composite material and molding method technology, applied in the field of composite material processing, can solve the problems of carbonization, high cost of main materials, damage to the original performance of bamboo fibers, etc., and achieve the effects of small shear force and improved feeding efficiency.

Active Publication Date: 2020-09-08
箐谷生物科技(嘉兴)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The heating is carried out in the transmission channel, and the above-mentioned mixing will cause carbonization of the bamboo fiber material in the transmission spiral channel due to high temperature heating, which destroys the original properties of the bamboo fiber
[0005] Secondly, the above-mentioned existing composite materials are all molded by injection molding. Injection molding needs to have certain requirements on the viscosity of the heated material. If it is too viscous, injection molding cannot be performed, and the amount of bamboo fiber added is limited limitation, that is, the cost of the main material is relatively high

Method used

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  • Molding method of bio-based filler modified polylactic acid composite material product
  • Molding method of bio-based filler modified polylactic acid composite material product
  • Molding method of bio-based filler modified polylactic acid composite material product

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Embodiment Construction

[0055] The following are specific embodiments of the invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0056] Such as figure 1 As shown, the molding method of the bio-based filler modified polylactic acid composite product, the die-casting method is based on the die-casting production line, the die-casting production line includes a conveying channel b1, and a feeding screw b2 pierced in the conveying channel b1, The feeding screw b2 is connected to the main feeding motor. Of course, in order to improve the stability of the rotation of the feeding screw b2, a gearbox is connected to the output shaft of the feeding main motor, and the feeding screw b2 is connected to the gear box, as well as to the transmission The heating mechanism for passage b1, the heating mechanism includes a steam pipe surrounding the outer wall of the conveyi...

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Abstract

The invention belongs to the technical field of composite material processing, and particularly relates to a molding method of a bio-based filler modified polylactic acid composite material product. According to the method, the technical problems of liable carbonization of bamboo fibers and the like in the prior art are solved. A pelleting technology of a polylactic acid bamboo fiber composite material comprises the following steps of S1, material preparation; S2, placement; S3, heating; S4, extrusion; S5, cutting-off; and S6, die casting. The method has the advantages that a bamboo fiber material can be prevented from being carbonized due to long-time high temperature heating in a conveying channel, and the quality of products is improved; at the same time, due to the fact that a path onthe conveying channel is shortened, the addition amount of bamboo fibers can be increased, so that the cost of producing main ingredients is reduced.

Description

technical field [0001] The invention belongs to the technical field of composite material processing, and in particular relates to a molding method of a bio-based filler-modified polylactic acid composite product. Background technique [0002] Polylactic acid, bamboo fiber and auxiliary materials can be mixed to produce environmentally friendly materials, which are used in various tableware and other food fields. [0003] When various materials are mixed, the current material mixing is concentrated in one place and then heated to produce the final composite material. [0004] Heating is carried out in the transmission channel, and the above-mentioned mixing will cause carbonization of the bamboo fiber material in the transmission spiral channel due to high temperature heating, which destroys the original performance of the bamboo fiber. [0005] Secondly, the above-mentioned existing composite materials are all molded by injection molding. Injection molding needs to have ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/00C08L67/04C08L97/02C08K3/34
CPCB29C69/00C08L67/04C08L2205/16C08L97/02C08K3/34
Inventor 徐若枫钱紫星谢骏齐力然倪秋霞
Owner 箐谷生物科技(嘉兴)有限公司
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