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Patent Searching and Data


Title:
PRODUCTION OF CYLINDER-SHAPED NONWOVEN FABRIC AND APPARATUS THEREFOR
Document Type and Number:
Japanese Patent JPH07133572
Kind Code:
A
Abstract:

PURPOSE: To produce a cylinder-shaped nonwoven fabric having a sufficient strength on the overlapped parts at a low cost, by raising the both ends of a flat belt-shaped nonwoven fabric in a specified width, forming it in a cylinder shape, overlapping the raised ends and subjecting to the needling treatment.

CONSTITUTION: A flat belt-shaped nonwoven fabric 10 is subjected to a raising treatment with, e.g. a grinder in a specified width on both ends, supplied to a guiding means 6 having an almost round opening through a feeding rollers 5a,5b and is formed into a cylinder-shape while overlapping the both ends raised in the above treatment. Then, the overlapped part is needled from inside with a needle 9a of a downside needling means A vertically driven by the rotation of a crank shaft 12, thereafter sent to an upside needling means B and needled from upper side with a needle 9b vertically driven by the rotation of a crank shaft 20. By these treatments, a cylinder-shaped nonwoven fabric having roughly same strength in the peripheral direction in the overlapped part as that in the original fabric is obtained.


Inventors:
Kawanabe, Masayuki
Uchida, Kenzo
Application Number:
JP1993000304807
Publication Date:
May 23, 1995
Filing Date:
November 09, 1993
Export Citation:
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Assignee:
NIPPON FELT CO LTD
International Classes:
D04H1/46; D04H1/76; D04H18/00; D04H18/02; (IPC1-7): D04H1/70; D04H1/46; D04H18/00
Attorney, Agent or Firm:
佐藤 英昭