A polylactic acid blank material extrusion strengthening equipment
A polylactic acid and blank material technology, applied in the field of extrusion forming equipment, can solve the problems of different production parameters, restricted application, insufficient strength of polylactic acid profiles, etc., to achieve the effect of enhancing strength and solving blockage
Active Publication Date: 2018-08-28
SUZHOU SEEMINE NEBULA BIOTECH CO
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Problems solved by technology
[0002] As a degradable material, polylactic acid has good tissue compatibility, so it has a wide range of uses in medicine, but the conventional crystal form of polylactic acid restricts its application because of its low strength and retention
[0003] Chinese patent CN101342782A discloses a polylactic acid extrusion molding method. The raw material containing polylactic acid and the nucleating agent mixture are preliminarily formed in an extrusion molding machine to obtain a semi-finished product, and then the semi-finished product is heated again to obtain a preliminary molded product. The primary product is cooled below the glass transition temperature, and a stable structure is formed through the recrystallization process to improve the heat resistance of the product, but the polylactic acid profile prepared by this method still has the defect of insufficient strength
[0004] In addition, injection molding is usually used in the manufacture of polymer materials, but the physical and chemical properties of polymer materials are different, and the production parameters are also different. It is necessary to modify the injection molding equipment to solve the problem of blockage during the injection molding process and insufficient force on the raw materials. Uniformity and other issues
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[0031] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0032] Such as figure 1 and figure 2 As shown, the present invention discloses a polylactic acid blank material extrusion strengthening equipment, including a guide module 1, a first control module 2 and a second control module 3, the guide module 1 is arranged above the first control module 2, and the second control module 3 is arranged on the Below a control module 2, the guide module 1 includes a mold backing plate 11, the bottom of the mold backing plate 11 is provided with a support spring 12, a mold guide column 13 and an extrusion ejector pin 16, and the extrusion ejector pin 16 is fixed on the Guide to the bottom of module 1;
[0033] A control module 2 includes a control mold core fixing plate 25, a control mold core 24, a blank material conveyor 22, a limit pull rod 21 and an extrusion auxiliary rod 23, and a control mold core fixing ...
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Abstract
The invention discloses polylactic acid blank extrusion strengthening equipment. A polylactic acid blank is processed further, is deformed under the effect of applied pressure, and is oriented, and then the strength of a finally obtained sectional material is improved.
Description
technical field [0001] The invention relates to extrusion molding equipment, in particular to an extrusion strengthening equipment for polylactic acid. Background technique [0002] As a degradable material, polylactic acid has good tissue compatibility, so it has a wide range of uses in medicine, but the conventional crystal form of polylactic acid restricts its application because of its low strength and retention. [0003] Chinese patent CN101342782A discloses a polylactic acid extrusion molding method. The raw material containing polylactic acid and the nucleating agent mixture are preliminarily formed in an extrusion molding machine to obtain a semi-finished product, and then the semi-finished product is heated again to obtain a preliminary molded product. The primary product is cooled below the glass transition temperature, and a stable structure is formed through the recrystallization process to improve the heat resistance of the product, but the polylactic acid profi...
Claims
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IPC IPC(8): B29C55/30B29C33/02B29K67/00
CPCB29C33/02B29C55/30B29K2067/046
Inventor 曾晨光布丽斯杨习锋彭芸秦小鹏
Owner SUZHOU SEEMINE NEBULA BIOTECH CO