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Patent Searching and Data


Title:
PROCESS AND APPARATUS FOR NEEDLE PUNCHING OF WEB FOR MAKING PAPER MACHINE FELT
Document Type and Number:
Japanese Patent JPH04352896
Kind Code:
A
Abstract:

PURPOSE: To reduce the generation of tensile stress of a web upon needle punching and to simplify the after-treatment of the web by heating and subsequently needle punching the web while the web comprising synthetic fibers is held under a tensile stress.

CONSTITUTION: In making of a paper machine felt, after a web comprising synthetic fibers is heated, the web kept in the heated state is needle punched under a tensile stress. To give an actual example, the web 2 is heated by a heating device 9 by forming a loop of a reciprocating motion of the web 2 between a holder 6 for a needle punching machine 1 and a stretcher 7 of a stretching device and finally is needle-punched by a needle punching machine 1.


Inventors:
Feyerl, Gunther
Koenig, Franz
Application Number:
JP1991000285365
Publication Date:
December 07, 1992
Filing Date:
August 09, 1991
Export Citation:
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Assignee:
TEXTIL MAS FAB DR ERNST FEHRER AG
International Classes:
D04H18/02; D21F7/08; (IPC1-7): D04H18/00; D21F7/08