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FRP molded article and method of producing same

A fiber reinforced plastic and a production method technology, applied in the field of fiber reinforced plastic molded products and their production, can solve problems such as not being verified, and achieve the effect of low volume resistivity

Inactive Publication Date: 2003-06-25
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another reason is that manufacturers of molded articles consider the risks involved in adopting the technology to produce salable molded articles because the technology has not yet been proven to overcome the flaws in question

Method used

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  • FRP molded article and method of producing same
  • FRP molded article and method of producing same
  • FRP molded article and method of producing same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0262] As the hot runner injection molding equipment, the SVP injection molding equipment produced by Seiki is based, and the length of the hot runner gate 8 is 125mm, and the diameter of the gate hole 14a is 1.5mm.

[0263] The hot runner manifold 9 has a rectangular shape with a height of 150 mm, a length of 340 mm and a width of 340 mm, and the inner resin channel has a circular cross-sectional shape with a diameter of 8 mm. The material of the hot runner manifold 9 and the hot runner nozzle 8 is SK3. exist Figure 16 The approximate vertical section of the fixed side plate 4, the movable side plate 5, the cavity 6 and the mold core 7 of the mold 2 is shown in .

[0264] On one end face of the cavity 6 , a first sprue 10 is installed, and the first sprue 10 communicates with the hot runner main pipe 9 . A plurality of hot runner nozzles 8 are provided at the end of the hot runner manifold 9 . The end of the hot runner sprue 8 is opened toward the mold hollow portion 21 t...

example 2

[0270] Mold 2 is a front gate type. exist Figure 18 The arrangement of the twelve hot runner nozzles 281 to 292 for the molded product 20 is shown in a top plan view. The mold 2 was used and the shaped article 20 was produced in the same manner as described in Example 1.

example 3

[0272] Mold 2 is a front gate type. exist Figure 19 The arrangement of the fourteen hot runner nozzles 381 to 394 for the molded product 20 is shown in a top plan view. The mold 2 was used and the shaped article 20 was produced in the same manner as described in Example 1.

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Abstract

An FRP molded article molded by hot runner injection molding with a mixture of thermoplastic resin and resin- reinforcing fibers of 0.1-7 mm in average length dispersed in the thermoplastic resin; and a hot runner injection molding method therefor. The molded article is preferable for use as a housing for electronic terminal equipment, cellular phones, etc.

Description

technical field [0001] The present invention relates to a fiber-reinforced plastic (FRP) molded product and a production method thereof. [0002] The FRP molded article of the present invention includes a thermoplastic resin as a matrix resin and reinforcing fibers having an average fiber length of 0.1 to 7 mm dispersed in the matrix resin. The FRP molded product is thin-walled and excellent in mechanical properties with low volume resistivity. It can be optimally used as a casing of an electronic terminal mechanism or device, a mobile cellular phone, and the like. [0003] The molded article of the present invention can be produced by a hot runner injection molding method. Background technique [0004] Injection molded articles made of synthetic resins are widely used as structural parts such as functional parts and mechanical parts, and housings of office machines and devices, electronic terminal mechanisms and devices, mobile cellular phones, and the like. In particula...

Claims

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Application Information

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IPC IPC(8): B29C45/00B29C45/27B29C45/28
CPCB29C2045/279Y10T428/2918Y10T428/2913Y10T428/298Y10T428/2978B29C45/2806B29C45/0005Y10T428/249924B29C45/27B29C45/00
Inventor 长山和树橳岛英树石川修司谷杉英昭
Owner TORAY IND INC
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