Process for producing a non-woven fabric of hot-melt-adhered com

Details Process for producing a non-woven fabric of hot-melt-adhered com Process for producing a non-woven fabric of hot-melt-adhered com

1983-02-02

1985-02-19

Ball, Michael

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156296, 1563096, 428198, 428296, 428373, D02G 300, D04H 154, D04H 156, B32B 2702

Patent

active

045003840

ABSTRACT:
A process for producing a non-woven fabric of hot-melt-adhered composite fibers having a high strength in a small weight thereof and soft feeling is provided, which process comprises forming a web of fiber aggregate consisting of sheath and core type composite fibers alone composed of a first (core) component of a fiber-formable polymer and a second (sheath) component of one kind or more of polymers having a m.p.(s) lower than that of the first by 30.degree. C. or more and also having a specified average thickness, or mixed fibers of the composite fibers with other fibers containing the composite fibers in a specified amount; and heat-treating the web at a temperature lower than the m.p. of the first component and equal to or lower than that of the second, and affords to the second, a specified apparent viscosity as measured at a specified rate to thereby stabilize the form of the web by hot-melt-adhesion of the second.

REFERENCES:
patent: 3589956 (1971-06-01), Kranz et al.
patent: 3595731 (1971-07-01), Davies et al.
patent: 3620892 (1971-11-01), Wincklhofer
patent: 3645819 (1972-02-01), Fujii
patent: 4088726 (1978-05-01), Cumbers
patent: 4189338 (1980-02-01), Ejima et al.
patent: 4211819 (1980-07-01), Kunimune
patent: 4234655 (1980-11-01), Kunimune
patent: 4269888 (1981-05-01), Ejima

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