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Hollow forming method for thermoplastic plastic

A technology of thermoplastics and molding methods, applied in the direction of coating, etc., can solve problems such as easy deformation and low product quality

Pending Publication Date: 2022-04-12
江苏恒久滚塑制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process, when the product is demolded, because the product still has a certain temperature, it is relatively soft and prone to deformation
resulting in lower product quality

Method used

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  • Hollow forming method for thermoplastic plastic
  • Hollow forming method for thermoplastic plastic
  • Hollow forming method for thermoplastic plastic

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Experimental program
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Embodiment Construction

[0037] The following is attached figure 1 - attached Figure 5 The application is described in further detail.

[0038] refer to figure 1 , is a thermoplastic hollow molding method disclosed in the present application, comprising the following steps: Step 1: loading materials, putting the raw materials into the mold;

[0039] Step 2: Heating, put the mold into the heating chamber for four-stage heating. The four-stage heating includes a pre-heating section. The pre-heating section is used to heat the mold as a whole, and locally heat the mold to eliminate the low-temperature area, and then carry out Three-stage heating, three-stage heating includes the first heating section, the second heating section and the third heating section, the heating temperature of the first heating section is lower than the heating temperature of the second heating section, and the heating temperature of the third heating section is lower than the second heating section The temperature of the hea...

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PUM

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Abstract

The invention relates to a thermoplastic plastic hollow forming method, and relates to the technical field of rotational moulding, the thermoplastic plastic hollow forming method comprises the following steps: 1, feeding: putting raw materials into a mold; 2, heating is conducted, specifically, the mold is put into a heating chamber to be subjected to four-section heating; 3, cooling is conducted, specifically, after heating is completed, the mold is conveyed into a cooling chamber to be cooled; 4, demolding is conducted, specifically, the cooled mold is opened, and a product is taken out of the mold; and 5, shaping: putting the product into a shaping device for cooling and shaping. The production process has the advantages that produced products are not prone to deformation, and the product quality is high.

Description

technical field [0001] The present application relates to the technical field of rotational molding, in particular to a thermoplastic hollow molding method. Background technique [0002] Rotational molding, also known as rotational molding, rotary molding, rotary molding, etc., is a hollow molding method for thermoplastics. The method is to add plastic raw materials into the mold first, then the mold is continuously rotated along two vertical axes and heated, and the plastic raw materials in the mold are gradually and uniformly coated and melted and adhered to the mold cavity under the action of gravity and heat energy. On the entire surface, it is formed into the desired shape, and then cooled and shaped to form a product. [0003] During the production process, when the product is demolded, because the product still has a certain temperature, it is relatively soft and prone to deformation. This in turn leads to lower product quality. Contents of the invention [0004]...

Claims

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Application Information

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IPC IPC(8): B29C41/06B29C41/46B29C41/38B29C41/52
Inventor 施华伟
Owner 江苏恒久滚塑制品有限公司