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US 2006/0188691 A1Published application
Fiber-reinforced sheet, and process and apparatus for fabricating the same
OwnerKazumasa Kawabe, Kichiro Ishidainventors
Life of this patent
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Abstract
A fiber-reinforced sheet comprises a first fiber sheet having a fiber bundle arranged and arrayed in one direction and arranged along the longitudinal direction of the fiber-reinforced sheet. The fiber bundle is so folded back at an inclination of a winding angle of θ degrees that the first fiber sheet is helically wound on the fiber-reinforced sheet. The fiber-reinforced sheet has three layers including: the first fiber sheet having the fiber bundle at an angle of 0 degrees with respect to the longitudinal direction; a second fiber sheet at an angle of +θ degrees; and a third fiber sheet at an angle of −θ degrees.
Claims26
In a multiaxial fiber-reinforced sheet,
- a first fiber sheet having a fiber bundle arranged and arrayed in one direction is arranged along the longitudinal direction of said fiber-reinforced sheet, and
- at least one sheet of fiber bundle different from said first fiber sheet is sequentially folded back and helically wound on said first fiber sheet at an inclination of a predetermined angle of θ degrees (0 degrees<θ<90 degrees),
- a fiber-reinforced sheet having three layers comprising:
- a first fiber sheet having a fiber bundle direction of 0 degrees with respect to said longitudinal direction;
- a second fiber sheet having a fiber bundle direction of +θ degrees with respect to said longitudinal direction;
- and
- a third fiber sheet having a fiber bundle direction of −θ degrees with respect to said longitudinal direction.
4 more elements
In a multiaxial fiber-reinforced sheet,
- a first fiber sheet having a fiber bundle arranged and arrayed in one direction is arranged along the longitudinal direction of said fiber-reinforced sheet,
- at least one sheet of fiber bundle different from said first fiber sheet is sequentially folded back and helically wound on said first fiber sheet at an inclination of a predetermined angle of θ degrees (0 degrees<θ<90 degrees), and
- said helically wound fiber sheet is laid on said first fiber sheet,
- a fiber-reinforced sheet having three layers comprising:
- a first fiber sheet having a fiber bundle direction of 0 degrees with respect to said longitudinal direction;
- a second fiber sheet having a fiber bundle direction of +θ degrees with respect to said longitudinal direction;
- and
- a third fiber sheet having a fiber bundle direction of −θ degrees with respect to said longitudinal direction.
5 more elements
In a process for manufacturing a multiaxial fiber-reinforced sheet,
- a first fiber sheet having a fiber bundle arranged and arrayed in one direction is caused to travel along the longitudinal direction of said fiber-reinforced sheet,
- a process for manufacturing a fiber-reinforced sheet, comprising:
- a first step of drawing at least one sheet of fiber bundle different from said first fiber sheet at an inclination of +θ degrees (0 degrees<θ<90 degrees) with respect to the longitudinal direction of said fiber-reinforced sheet, to form a second fiber sheet;
- a second step of folding back said formed second fiber sheet from said first fiber sheet at an inclination of −θ degrees with respect to said longitudinal direction;
- a third step of drawing said folded-back second fiber sheet to form a third fiber sheet;
- a fourth step of folding back said formed third fiber sheet from said first fiber sheet at an inclination of +θ degrees with respect said longitudinal direction;
- and
- a fifth step of drawing said folded-back third fiber sheet to form a fourth fiber sheet,
- wherein one cycle including said second step to said fifth step is repeated to wind said fiber bundle helically on said first fiber sheet thereby to extend said fiber-reinforced sheet in the longitudinal direction.
6 more elements
In a process for manufacturing a multiaxial fiber-reinforced sheet,
- a first fiber sheet having a fiber bundle arranged and arrayed in one direction is caused to travel along the longitudinal direction of said fiber-reinforced sheet,
- a process for manufacturing a fiber-reinforced sheet, comprising:
- a first step of drawing at least one sheet of fiber bundle different from said first fiber sheet at an inclination of +θ degrees (0 degrees<θ<90 degrees) with respect to the longitudinal direction of said fiber-reinforced sheet, to form a second fiber sheet;
- a second step of folding back said formed second fiber sheet from said first fiber sheet at an inclination of −θ degrees;
- a third step of drawing said folded-back second fiber sheet to form a third fiber sheet;
- a fourth step of folding back said formed third fiber sheet from said first fiber sheet at an inclination of +θ degrees;
- and
- a fifth step of drawing said folded-back third fiber sheet to form a fourth fiber sheet,
- wherein one cycle including said second step to said fifth step is repeated to wind said fiber bundle helically and to laminate said first fiber sheet on said wound fiber bundle thereby to extend said fiber-reinforced sheet in the longitudinal direction.
6 more elements
In an apparatus for manufacturing a multiaxial fiber-reinforced sheet,
- an apparatus for manufacturing a fiber-reinforced sheet, comprising:
- first fiber sheet feed means for feeding a first fiber sheet having a fiber bundle arranged and arrayed in one direction;
- a pair of tenter chains for transferring the first fiber sheet fed from said first fiber sheet feed means, along the longitudinal direction of said fiber-reinforced sheet;
- second fiber sheet feed means for feeding at least one sheet of fiber bundle different from said first fiber sheet;
- fiber sheet winding means for:
- rotating said fiber bundle fed from said second fiber sheet feed means, at an inclination of a predetermined angle of θ degrees (0 degrees <θ<90 degrees) with respect to said first fiber sheet while applying the same to said first fiber sheet;
- and folding back said fiber bundle sequentially and individually at the positions of said paired tenter chains to wind the same helically, thereby to form said fiber-reinforced sheet having three layers including:
- said first fiber sheet having the fiber bundle at an inclination of 0 degrees with respect to said longitudinal direction;
- a second fiber sheet having a fiber bundle at an inclination of +θ degrees with respect to said longitudinal direction;
- and a third fiber sheet having a fiber bundle at an inclination of −θ degrees with respect to said longitudinal direction;
- and
- fiber-reinforced sheet recovery means for recovering said formed fiber-reinforced sheet.
9 more elements
In an apparatus for manufacturing a multiaxial fiber-reinforced sheet,
- an apparatus for manufacturing a fiber-reinforced sheet, comprising:
- first fiber sheet feed means for feeding a first fiber sheet having a fiber bundle arranged and arrayed in one direction;
- a pair of tenter chains for traveling along the longitudinal direction of said fiber-reinforced sheet;
- second fiber sheet feed means for feeding at least one sheet of fiber bundle different from said first fiber sheet;
- fiber sheet winding means for:
- rotating said fiber bundle fed from said second fiber sheet feed means, at an inclination of a predetermined angle of θ degrees (0 degrees<θ<90 degrees) with respect to said paired tenter chains while applying the same to said first fiber sheet;
- and folding back said fiber bundle sequentially and individually at the positions of said paired tenter chains to wind the same helically, thereby to form said fiber-reinforced sheet having two layers including:
- a second fiber sheet having a fiber bundle at an inclination of +θ degrees with respect to said longitudinal direction;
- and a third fiber sheet having a fiber bundle at an inclination of −θ degrees with respect to said longitudinal direction;
- first fiber sheet laminating means for laminating the first fiber sheet fed from said first fiber sheet feed means, on said two-layered fiber sheet, thereby to form the fiber-reinforced sheet;
- and
- fiber-reinforced sheet recovery means for recovering said formed fiber-reinforced sheet.
9 more elements
Dependencies are inferred from the claim text.