| (19) |
 |
|
(11) |
EP 0 187 236 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
10.05.1989 Bulletin 1989/19 |
| (43) |
Date of publication A2: |
|
16.07.1986 Bulletin 1986/29 |
| (22) |
Date of filing: 19.11.1985 |
|
|
| (84) |
Designated Contracting States: |
|
DE SE |
| (30) |
Priority: |
21.12.1984 JP 271561/84
|
| (71) |
Applicant: KURARAY CO., LTD. |
|
Kurashiki-City
Okayama Prefecture 710 (JP) |
|
| (72) |
Inventors: |
|
- Genba, Tsuneo
Okayama-City
Okayama Pref. (JP)
- Nakanishi, Shingo
Okayama-City
Okayama Pref. (JP)
- Imura, Yoshihisa
Okayama-City
Okayama Pref. (JP)
|
| (74) |
Representative: Strehl Schübel-Hopf Groening & Partner |
|
Maximilianstrasse 54
80538 München
80538 München (DE) |
|
| |
|
| (54) |
Process for producing nonwoven fabrics suited for use as wipers |
(57) @ Nonwoven fabrics showing rubber-like elasticity in a wet condition, having good
wear resistance and strength and retaining flexibility even in a dry condition are
obtained by causing a nonwoven fabric containing, as essential constituent fibers,
60-90 weight percent of highly shrinkable polyvinyl alcohol fibers capable of absorbing
water to shrink of which a maximum shrinking temperature in water is within the range
of 65-90°C with a maximum shrinkage percentage of not less than 50 percent and 10-40
weight percent of binder fibers having a melting point not higher than 200°C to shrink
by warm water treatment to an extent such that the areal reduction amounts to 35-65
percent and further melting the surface of the binder fibers by heating.