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Micro-foaming injection molding process for lightweight PP toothbrush handle

An injection molding process, toothbrush handle technology, applied in the direction of coating, etc., can solve the problems of low environmental degradation performance, the quality of the molded plastic body can not achieve various advantages, etc., to achieve good molding effect, natural color, and improve the toughness effect

Inactive Publication Date: 2021-09-07
JIANGSU SANXIAO GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a light-weight PP toothbrush handle micro-foaming injection molding process, which aims to solve the problems in the prior art that the environmental degradation performance is low during production and use, and the quality of the molded plastic body cannot be realized in many aspects. merit question

Method used

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  • Micro-foaming injection molding process for lightweight PP toothbrush handle

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Embodiment

[0029] see figure 1 , the present invention provides the following technical solutions:

[0030] A light-weight PP toothbrush handle micro-foaming injection molding process, comprising the following steps:

[0031] S1: Sampling by weight, take polymer pellets, colloidal pigments, biological glue and processing aids into the mixer, stir at 20°C-35°C for 10-20min at a speed of 150r / min for mixing, fully After mixing and stirring, the mixture is prepared for use;

[0032] S2: Sieve the mixture in step S1 through a 250-mesh sieving machine;

[0033] S3: Add the mixture and foaming agent in step S2 to the barrel of the injection molding machine in batches according to the capacity of the barrel, and then use the heat generated by the heating heater in the injection molding machine to melt the mixture in S2 into a polymer melt, the mixture and The foaming agent is mixed in the injection molding machine to generate polymer and gas;

[0034] S4: The polymer and gas formed in step ...

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Abstract

The invention provides a micro-foaming injection molding process for a lightweight PP toothbrush handle, and belongs to the technical field of foaming injection molding. The micro-foaming injection molding process for the lightweight PP toothbrush handle comprises the following steps of S1, carrying out sampling by weight, taking polymer granules, colloidal particle pigment, biological glue solution and processing aid and feeding them into a stirrer, and carrying out stirring at the temperature of 20-35 DEG C for 20-30 minutes; carrying out stirring at the speed of 150r / min for 10-20 minutes for mixing, and sufficiently carrying out mixing and stirring for later use; and S2, sieving the mixture in S1 through a 250-mesh sieving machine. Starch and plant fibers are added into a plastic material, the adhesiveness and the fiber strength of a formed polymer solution are guaranteed in the melting process, the forming effect of the polymer solution is better, meanwhile, the toughness of the polymer solution can be guaranteed in the foaming process, and generated bubbles can be denser.

Description

technical field [0001] The invention belongs to the technical field of foaming injection molding, and in particular relates to a micro-foaming injection molding process for a lightweight PP toothbrush handle. Background technique [0002] In the foam molding process or foamed polymer material, a cellular or porous structure is formed through the addition and reaction of physical or chemical blowing agents. The basic steps of foam molding are the formation of nuclei, the growth or expansion of nuclei, and the stabilization of nuclei. Under given temperature and pressure conditions, the solubility of the gas decreases, so that it reaches a saturated state, so that the excess gas is removed and bubbles are formed, thereby realizing nucleation. [0003] At present, the commonly used foaming injection molding process in the market focuses on foam molding itself, and the combination of molding materials is less involved in environmental degradation and molding plastic body reinfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/00B29C45/18B29C45/46B29C45/73B29C45/78B29C44/42B29C45/26B29B13/10
CPCB29C45/1816B29C45/1866B29C45/73B29C45/46B29C45/78B29C45/0005B29C44/42B29C45/26B29B13/10B29C2945/76531
Inventor 韩国平
Owner JIANGSU SANXIAO GRP CO LTD
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