Title:
PROTECTING MATERIAL AND UNDERGROUND PIPE
Document Type and Number:
Japanese Patent JP2002348753
Kind Code:
A
Abstract:
To provide a protecting material having high impact strength, excellent in flexibility and good at productivity and capable of being thinned, and to provide an underground pipe excellent in impact strength.
This protecting material comprises a woven cloth 2 obtained by weaving a polyolefin flat yarn as warps 11 and wefts 12, wherein the woven cloth is twill weave and beaten density of the warps 11 and/or the wefts 12 of the woven cloth 2 is 5-50 yarns/inch.
Inventors:
ISHII KIYOO
TAKANO KIMIO
HAGA YUJI
TAKANO KIMIO
HAGA YUJI
Application Number:
JP2001160940A
Publication Date:
December 04, 2002
Filing Date:
May 29, 2001
Export Citation:
Assignee:
HEISEI POLYMER KK
International Classes:
F16L57/00; D03D1/00; D03D15/02; F16L1/024; (IPC1-7): D03D15/02; D03D1/00; F16L1/024; F16L57/00
Domestic Patent References:
| JPH0875082A | 1996-03-19 | |||
| JPH0872206A | 1996-03-19 | |||
| JPH07167373A | 1995-07-04 | |||
| JP2001182891A | 2001-07-06 | |||
| JP2002242045A | 2002-08-28 | |||
| JP2001124244A | 2001-05-11 | |||
| JPH05301432A | 1993-11-16 | |||
| JP2000342098A | 2000-12-12 |
Attorney, Agent or Firm:
Masatake Shiga (6 people outside)
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