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:
Dec. 30, 1986
Filed:
Oct. 30, 1984
Jurgen Knoke, Weinheim, DE;
Helmut Jager, Furth, DE;
Ludwig Dekant, Weinheim, DE;
Dieter Groitzsch, Hirschberg, DE;
Firma Carl Freudenberg, Weinheim, DE;
Abstract
The filler fleece material of the invention consists of a laminate of two layers of fleece containing bonding fibers. The thinner layer, which serves as a covering fleece, consists to at least 60% of thermoplastic bonding fibers which melt at the same or a lower temperature than those of the central fleece. This combination makes it possible, after the depositing of the fiber layers and the thermal consolidation of the central fleece, to perform a process for smoothing the cover layer, in which the laminate is exposed in a roller gap to a temperature that is above the fiber melting point of the cover fleece. The filler fleece material of the invention, on account of its smooth yet still sufficiently air-permeable cover layer, is no longer subject to fiber protrusion. Furthermore, the clinging of projecting fibers during application to textile surface materials is reliably prevented.