METHOD FOR SPREADING FIBER BUNDLES, SPREAD FIBER SHEET, AND METHOD FOR MANUFACTURING A FIBER-REINFORCED SHEET

Title:

METHOD FOR SPREADING FIBER BUNDLES, SPREAD FIBER SHEET, AND METHOD FOR MANUFACTURING A FIBER-REINFORCED SHEET

Document Type and Number:

WIPO Patent Application WO/2010/137525

Kind Code:

A1

Abstract:

Provided is a fiber-spreading method that can uniformly distribute the fibers of a fiber bundle having an increased number of fibers, thereby forming a thin, wide spread fiber sheet having a uniform thickness. A set of regions Si are arranged in a movable region M which is set so that the fibers of a fiber bundle can move in the width direction. Each region Si comprises a fiber-spreading region Ai and an expansion region Bi. Each fiber-spreading region Ai moves the fibers in the width direction while bending said fibers by letting a fluid pass through the fiber bundle, thereby spreading the fiber bundle to a width Wi (i = 1, …, n). In each expansion region Bi, which is set upstream in the conveyance direction from the corresponding fiber-spreading region Ai, the width of the fiber bundle expands as it moves towards the end of the expansion region, accompanying the width-direction movement of the fibers in the fiber-spreading region Ai. Thus, the width-direction movement phenomenon, due to the fibers in the fiber bundle being distributed in fiber-spreading region Ai, extends to the upstream expansion region Bi, resulting in pre-spreading and allowing the fibers to be uniformly distributed in fiber-spreading region Ai, increasing the width to a prescribed width with a uniform thickness.

Inventors:

KAWABE KAZUMASA (JP)

Application Number:

PCT/JP2010/058602

Publication Date:

December 02, 2010

Filing Date:

May 21, 2010

Export Citation:

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Assignee:

FUKUI PREFECTURAL GOVERNMENT (JP)
KAWABE KAZUMASA (JP)

International Classes:

D02J1/18; C08J5/06; D01F9/14

Foreign References:

JP3064019B2	2000-07-12
JP2007518890A	2007-07-12
JP2002115143A	2002-04-19
JP2003336135A	2003-11-28
JP2004100882A	2004-04-02
JP3064019B2	2000-07-12
JP3907660B2	2007-04-18

Other References: