Title:
PIPE LINING MATERIAL AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP3789456
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for integrally forming a highly airtight film layer on the outer periphery of a tubular resin absorbing material without using an easily peelable plastic film causing the clogging of a pipeline, and a novel highly functional pipe lining material obtained thereby.
SOLUTION: A fiber material F is heated and melted on one side of a strip-like sheet 4 comprising the fiber material F to form a highly airtight film layer 2 and both side edges of the strip-like sheet 4 are joined to obtain the tubular resin absorbing material or the fiber material F is heated and melted on the outer peripheral side of the tubular resin absorbing material 1 comprising the fiber material F to form the highly airtight film layer 2.
Inventors:
Michio Nagai
Hiroshi Awano
Hiroshi Awano
Application Number:
JP2004049072A
Publication Date:
June 21, 2006
Filing Date:
February 25, 2004
Export Citation:
Assignee:
Kansui Industry Co., Ltd.
International Classes:
B29C63/36; F16L55/16; B29C63/34; B32B1/08; B32B5/00; F16L1/00; B29L9/00; B29L23/00; (IPC1-7): B29C63/34; B32B1/08; B32B5/00; F16L55/16; //F16L1/00; B29L9:00; B29L23:00
Domestic Patent References:
| JP2001241591A | ||||
| JP58033098B2 | ||||
| JP7045182B2 | ||||
| JP5193001A | ||||
| JP2003205549A |
Attorney, Agent or Firm:
Wataru Hatori
Previous Patent: SHEET-LIKE CLEANSING MATERIAL
Next Patent: METHOD AND APPARATUS FOR PITCHING SCREW PILE
Next Patent: METHOD AND APPARATUS FOR PITCHING SCREW PILE