Production method for separated fiber bundle, separated fiber bundle, fiber-reinforced resin molding material using separated fiber bundle, and production method for fiber-reinforced resin molding material using separated fiber bundle

A fiber-reinforced resin and manufacturing method technology, applied in the direction of conveying filamentous materials, thin material handling, transportation and packaging, etc., to reduce risks, reduce replacement frequency, and improve productivity

Inactive Publication Date: 2019-03-01
TORAY IND INC
View PDF12 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method involves forming a flow path in the fiber bundle to facilitate resin impregnation,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production method for separated fiber bundle, separated fiber bundle, fiber-reinforced resin molding material using separated fiber bundle, and production method for fiber-reinforced resin molding material using separated fiber bundle
  • Production method for separated fiber bundle, separated fiber bundle, fiber-reinforced resin molding material using separated fiber bundle, and production method for fiber-reinforced resin molding material using separated fiber bundle
  • Production method for separated fiber bundle, separated fiber bundle, fiber-reinforced resin molding material using separated fiber bundle, and production method for fiber-reinforced resin molding material using separated fiber bundle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] Hereinafter, an embodiment of the method for producing a divided fiber bundle according to the present invention will be described with reference to the drawings. It should be noted that the present invention is not limited in any way by the form of the drawings.

[0061] The manufacturing method of the fiber-divided fiber bundle according to the present invention includes at least the following steps [A] and [B]: [A] a partial fiber-divided step, wherein the partially-fiber-divided fiber bundle is obtained along the A fiber bundle formed by a plurality of monofilaments is formed alternately in the longitudinal direction of a fiber bundle that is split into a plurality of bundles, and a non-fiber treatment part; [B] cutting process, wherein the The undivided portion of the partially-divided fiber bundle formed in the step [A] is cut along the longitudinal direction of the fiber bundle. First, the partially-divided step [A] will be described.

[0062] figure 1 An examp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Provided is a production method for a separated fiber bundle. The production method is characterized by including at least [A] a partial separation step for obtaining a partially separated fiber bundle that comprises separation-processed parts and not-separation-processed parts that are alternately formed along the long direction of a fiber bundle that comprises a plurality of single threads, wherein the separation-processed parts comprise a plurality of separated bundles, and [B] a cutting step for cutting along the long direction of the fiber bundle at the not-separation-processed parts of the partially separated fiber bundle formed during step [A]. A separated fiber bundle produced by means of said method, a fiber-reinforced resin molding material that uses the separated fiber bundle, and a production method for the fiber-reinforced resin molding material that uses the separated fiber bundle. The present invention can keep cutting processing to a minimum during the cutting step [B]and, in comparison with conventional techniques in which separation processing is performed by using a slitter or the like to abruptly and continuously make vertical slits in a fiber bundle that comprises a large tow, can reduce the risk of process trouble and the frequency with which a cutting blade is replaced and greatly improve productivity.

Description

technical field [0001] The present invention relates to a method for producing a split fiber bundle and a split fiber bundle, and more specifically, the present invention relates to a method for manufacturing a split fiber bundle with high bundle shape retention and a split fiber bundle manufactured by the method, and A fiber-reinforced resin molding material using the split fiber bundle and a method for producing the split fiber bundle, which has high bundle shape retention, is capable of disentangling the previously unimagined fiber bundle without causing breakage. Inexpensive large tows that are thin and have a large number of filaments are subjected to partial fiber splitting that can be continuously split, and then the partially split fiber bundles are processed into split fiber bundles that are completely split. Background technique [0002] Molding in which a desired shape is produced by heating and press molding using a molding material formed of discontinuous reinfo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B29C70/02B29B11/00C08J5/06C08J5/24B29K101/10B29K105/12
CPCB29B11/00B29C70/02C08J5/06B29B15/122C08J5/243B29B15/08B29C70/06B29C70/545B29B15/12B65H51/005B65H54/02B65H73/00C08J2323/12C08J2331/02C08J2333/04C08J2361/10C08J2363/00C08J2377/00C08J2381/04D02J1/18
Inventor 本桥哲也桥本贵史三好且洋佐藤智麻
Owner TORAY IND INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products