Method and device for manufacturing sheet-like prepreg
A manufacturing method and a technology of a manufacturing device, which are applied in the field of manufacture of sheet-like prepregs, and can solve the problems of non-disclosure and the like
Active Publication Date: 2015-08-12
TORAY IND INC
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- Application Information
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Problems solved by technology
However, this technology only discloses the content of widening by concave-convex rollers, and there is no disclosure about the requirements for strictly controlling the constant width of the sheet by narrowing the width after necessary widening, and it cannot be said to be sufficient. content
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[0058] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0059] figure 1 The manufacturing method and apparatus of the sheet-like prepreg which concerns on one Embodiment of this invention are shown, and 100 shows the whole manufacturing apparatus of the sheet-like prepreg. In this embodiment, a fiber bundle introduction step (fiber bundle introduction mechanism) 1, a fiber bundle thickness reduction step (fiber bundle thickness reduction mechanism) 2, a degassing step (degassing mechanism) 3, and a resin impregnation step (resin impregnation mechanism) are included. 4. Lamination process (lamination mechanism) 6 , re-impregnation process (re-impregnation mechanism) 5 .
[0060] A plurality of reinforcing fiber bundles (ribbon-shaped reinforcing fiber bundles) 10 composed of a plurality of continuous reinforcing fibers 30 are drawn from each roving creel 11, and are conveyed as a kind of fibers that ar...
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Abstract
Disclosed is a process for producing a sheet-shaped prepreg which comprises: a fiber bundle introduction step in which tape-like reinforcing fiber bundles are disposed in a multilayer arrangement in the thickness direction and introduced into a die to which a molten thermoplastic resin has been supplied; a fiber bundle thickness reduction step in which each of the tape-like reinforcing fiber bundles is widened by means of spreading to reduce the thickness; a resin impregnation step in which the tape-like reinforcing fiber bundles are impregnated with the molten resin in the die; and a lamination step in which the plurality of resin-impregnated tape-like reinforcing fiber bundles are laminated in the die. Also disclosed is an apparatus for producing the sheet-shaped prepreg. It is possible to produce a high-grade sheet-shaped thermoplastic prepreg in which the resin has been uniformly and satisfactorily impregnated throughout and the reinforcing fibers have been uniformly arranged. Furthermore, the time required for resin impregnation can be considerably shortened and the productivity can be remarkably enhanced.
Description
technical field [0001] The present invention relates to a method and apparatus for manufacturing a sheet-like prepreg, and more particularly, to a method and apparatus for manufacturing a sheet-like prepreg which is impregnated with resin very uniformly and using continuous reinforcing fibers. Background technique [0002] Sheet-like prepregs in which reinforcing fibers arranged in a sheet-like shape are impregnated with a molten matrix resin and kept in a semi-cured state are widely used for reinforcement of parts, surface formation, and the like in various fields. In addition, in order to obtain an excellent reinforcing effect and the like, continuous fibers are often used as reinforcing fibers. In particular, continuous reinforcing fibers are preferably used in a tape-like (tape-like) form, for example, by aligning them in one direction and impregnating them with resin. prepreg (for example, Patent Document 1). [0003] When such a sheet-like prepreg is produced by the r...
Claims
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IPC IPC(8): B29B11/16
CPCB29B15/125C08J5/24B29C70/50B29K2105/0872C08J5/243
Inventor 石桥壮一船田和昭竹内真也铃木保江藤理那子森原理圭佐佐木健和田原英辅野口泰干
Owner TORAY IND INC