The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 1985
Filed:
Feb. 02, 1983
Susumu Tomioka, Shigaken, JP;
Masahiko Taniguchi, Shigaken, JP;
Chisso Corporation, Osaka, JP;
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.