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Title:
HEAT-RESISTANT COMPOSITE NONWOVEN FABRIC AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH09119055
Kind Code:
A
Abstract:

To produce a heat-resistant composite nonwoven fabric having flame retardance and heat resistance and further excellent flexibility, bulkiness and dimensional stability in combination.

This heat-resistant composite nonwoven fabric is obtained by carrying out the hot pressure welding treatment in a continuous filament nonwoven web, thereby forming a continuous filament nonwoven web layer having hot pressure welded points, then laminating staple fiber nonwoven web layers having the flame retardance imparted thereto to both surfaces of the resultant continuous filament nonwoven web layer, performing the pressurized liquid treatment of the formed laminate, thereby forming three-dimensional tangles among the constituent filaments of the continuous filament nonwoven web layer and the constituent staple fibers of the staple fiber nonwoven web layers and the mutual constituent staple fibers of the staple fiber nonwoven web layers, and integrating the filaments with staple fibers as a whole. The resultant heat-resistant composite nonwoven fabric has ≥0.01 and <0.1g/cm3 bulk density.


Inventors:
NOGUCHI NOBUO
MATSUNAGA ATSUSHI
IIMI MICHIYO
Application Number:
JP27605795A
Publication Date:
May 06, 1997
Filing Date:
October 25, 1995
Export Citation:
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Assignee:
UNITIKA LTD
International Classes:
D04H3/147; D04H3/153; D04H5/03; (IPC1-7): D04H5/02; D04H3/14
Attorney, Agent or Firm:
Yoshihiro Morimoto