| (19) |
 |
|
(11) |
EP 0 148 033 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
04.03.1987 Bulletin 1987/10 |
| (43) |
Date of publication A2: |
|
10.07.1985 Bulletin 1985/28 |
| (22) |
Date of filing: 28.12.1984 |
|
|
| (84) |
Designated Contracting States: |
|
BE DE FR GB IT LU NL |
| (30) |
Priority: |
05.01.1984 US 568174
05.01.1984 US 568171
|
| (71) |
Applicant: E.I. DU PONT DE NEMOURS AND COMPANY |
|
() |
|
| (72) |
Inventors: |
|
- Kirayoglu, Birol
()
- Hwang, Sang-Hak
()
|
|
| |
|
(57) An improved heavy-weight, nonapertured, nonwoven fabric of hydraulically entangled
synthetic organic staple fibers has a unit weight of 200 to 850 g/m
2 [6 to 25 oz/yd
2], a strip tensile strength of at least 0.26 (N/cm)/(g/m
2) [5 (Ib/in)/(oz/yd
2)] and a resistance to disentanglement of at least 50 alternate extension cycles.
The fabric is much stronger than such prior art heavy-weight nonwoven fabrics of hydraulically
entangled staple fibers.