| (19) |
 |
|
(11) |
EP 0 263 392 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
06.03.1991 Bulletin 1991/10 |
| (43) |
Date of publication A2: |
|
13.04.1988 Bulletin 1988/15 |
| (22) |
Date of filing: 28.09.1987 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
01.10.1986 JP 235168/86
|
| (71) |
Applicant: Meidai Chemical Co., Ltd. |
|
Kurashiki-shi
Okayama (JP) |
|
| (72) |
Inventors: |
|
- Ogahara, Kazumasa
Kurashiki-shi
Okayama (JP)
- Tsuboi, Reijiro
Okayama-shi
Okayama (JP)
- Ogahara, Michihiro
Kurashiki-shi
Okayama (JP)
|
| (74) |
Representative: Lewald, Dietrich, Dipl.-Ing. |
|
Patentanwalt
Pienzenauerstrasse 2
D-81679 München
D-81679 München (DE) |
|
| |
|
| (54) |
Tetraaxial woven fabrics and tetraaxial weaving machine thereof |
(57) The present invention provides a tetraaxial woven fabric in a novel texture exhibiting
isotropic nature superior to that of the triaxial woven fabric and is composed of
warp ends, weft ends, and intersecting upper and lower bias yarns running obliquely
to the former two under such circumstances as increasing demand for triaxial woven
fabrics having isotropic nature in strength and elongation requisite to improvement
in strength and reduction of weight of FRP and supply of materials suited to the manufacture
of aircrafts and autocars. Further, for the purpose of weaving and tetraaxial fabric
as above, the present invention provides a bias yarn feeding device and bias yarn
traversing device in a structure that has never been devised before, thereby enabling
high speed weaving and production at low cost of a fabric exhibiting high isotropic
characteristics in spite of reduced thickness thereof.