Preparation method of fiber reinforced resin

A fiber reinforced resin and resin technology, applied in the direction of coating, can solve the problems of deterioration of surface design and formation of resin-enriched parts, etc., and achieve the effects of curing shrinkage suppression, arrangement disorder suppression, and improvement of surface appearance.

Active Publication Date: 2016-01-27
TORAY IND INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, especially in the RTM molding using the multi-point injection method, the formation of the resin-rich part due to the pressing down of the reinforcing fiber base material directly below the injection port as described above is likely to cause the surface to be damaged. Causes of Design Deterioration

Method used

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  • Preparation method of fiber reinforced resin
  • Preparation method of fiber reinforced resin
  • Preparation method of fiber reinforced resin

Examples

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Embodiment Construction

[0029] Embodiments of the present invention will be described below with reference to the drawings.

[0030] figure 1 A method for producing a fiber-reinforced resin according to an embodiment of the present invention is shown. In the molding die 3 formed by the upper mold 1 and the lower mold 2, a reinforcing fiber base material 4 formed of, for example, a laminate of a plurality of reinforcing fiber materials is arranged, and the reinforcing fiber base material 4 is opened from a direction facing one surface of the reinforcing fiber base material 4. The injection port 5 of the upper mold 1 is injected with a resin serving as a matrix resin of the fiber-reinforced resin to be molded, and the injected resin is impregnated into the reinforcing fiber base material 4 . A space 6 for passing the injected resin is formed in the reinforcing fiber base material 4 in the molding die 3 by at least partially removing in advance the portion of the reinforcing fiber base material direct...

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Abstract

A method for producing a fiber-reinforced resin. The method comprises injecting a resin into a reinforcing fiber base material arranged in a molding die from an injection port opened in a direction facing the surface of the reinforcing fiber base material to impregnate the reinforcing fiber base material. In the base material, the production method is characterized in that a portion of the reinforcing fiber base material located directly below the injection port is removed in advance at least partially in the thickness direction, thereby forming an injection in the reinforcing fiber base material in the molding die. The space for resin passage allows the resin injected from the injection port to impregnate the reinforcing fiber base material through the space for resin passage. By forming a space for the injection resin to pass through in the reinforcing fiber base directly below the injection port, the downward pressure on the surface of the reinforcing fiber base due to the injection of resin can be suppressed, the resin layer on the surface can be reduced, and excellent productivity can be maintained. While improving the design of the surface of the molded product.

Description

technical field [0001] The present invention relates to a method for producing fiber reinforced plastic (FRP: Fiber Reinforced Plastic), and more particularly to a method for preparing fiber reinforced resin impregnated in a reinforced fiber base material by injecting the resin from an injection port opened in a direction facing the surface of the reinforced fiber base material improvement. Background technique [0002] When impregnating the matrix resin for FRP molding into the reinforcing fiber base material arranged in the cavity of the molding die formed by a plurality of molds, especially the reinforcing fiber base material with a large surface area, in order to shorten the molding time and reduce the production cost Reduction of reduction, improvement of productivity, etc., known RTM (resin transfer molding, Resin Transfer Molding) method using the so-called multi-point injection method, the multi-point injection method approximately simultaneously from the direction f...

Claims

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Application Information

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IPC IPC(8): B29C39/24B29C39/10B29K105/08
CPCB29C70/48B29C70/547B29C45/14631B29K2105/08
Inventor 山本晃之助辻诚司北川将士
Owner TORAY IND INC
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