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Composite material forming method

A molding method and composite material technology, applied in the field of composite material molding, can solve problems such as not meeting economic efficiency, increasing product manufacturing costs, and slowing down operation speed, so as to achieve the effects of improving operation efficiency, increasing production speed, and increasing yield rate

Inactive Publication Date: 2008-09-10
HOCHENG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned time from heating up to cooling down is quite long. During this time, each mold needs to be placed in a container, which will virtually slow down the operation speed and increase the manufacturing cost of the product. In mass production, it is not in line with economic efficiency.

Method used

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Embodiment Construction

[0028] see Figure 1 ~ Figure 3 Shown, it is the preferred embodiment of composite material forming method of the present invention, mainly comprises the following steps:

[0029] Place the fiber layer 1 in the mold cavity 21 of the mold 2;

[0030] An elastic mold 3 and an isolation film 4 are covered on the fiber layer 1;

[0031] Vacuum is drawn between the bottom of the isolation film 4 and the mold cavity 21 of the mold 2 to form a negative pressure; and

[0032] Apply pressure to the elastic mold 3 to set the fiber layer 1 .

[0033] In step a, the fiber layer 1 is woven from several glass fibers, and the fiber layer 1 can be carbon fiber, glass fiber, Kevlar fiber, boron fiber, quartz fiber, nylon fiber, cotton fiber, etc. One of them is woven or mixed with any two or more of the above-mentioned fibers. The fiber layer 1 is pre-impregnated with resin before being placed in the mold cavity 21 of the mold 2, and the resin can be epoxy resin, polyester resin, phenol re...

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PUM

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Abstract

The invention relates to a method for forming a composite material; a fibrous layer is first placed in the die cavity of a mold; an elastic membrane and an isolating film are covered on the fibrous layer. Then, evacuation is carried out between the lower space of the the isolating film and the die cavity of the mold so as to form the negative pressure and simultaneously apply a mechanical pressure to the elastic membrane to cause the fibrous membrane to be formed, thus eliminating air holes possibly generated on the surface of the formed fibrous layer and increasing the excellent rate of the product. Furthermore, the mold can be preheated before pressurization; after the fibrous layer is formed through pressurization, the mechanical pressure is removed to separate the steps of pressurizing, heating and cooling, so as to accelerate the production and reduce the cost.

Description

technical field [0001] The invention relates to a molding method of composite materials, especially a method of placing an elastic mold on the fiber layer, and then applying mechanical force to the elastic mold to make the fiber layer evenly stressed, so as to improve product quality and increase production. Composite molding methods for speed. Background technique [0002] Because woven fibers have the characteristics of light weight, high strength, and woven aesthetics, composite material panels made of woven fibers have been widely used in products such as computers, electronics and communications (3C). The quality of the panel made by the pressure ax forming method is relatively stable, which is often used in the industry. [0003] Please refer to Figure 6, the woven fiber is pressurized by the pressure ax molding method to form a panel, mainly the cut fiber layer A is placed in the mold cavity B1 of the mold B, and then the mold B is placed in the container C , after ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/42B29C70/54B29K105/06B29K307/04B29K309/08B29K307/02B29K309/00B29K277/00B29K311/10
Inventor 范庆贤刘继裕
Owner HOCHENG CORPORATION
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