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:
Jan. 15, 1980
Filed:
Jan. 09, 1978
Hugo Brendel, Memmingen, DE;
Metzeler Schaum GmbH, Memmingen, DE;
Abstract
The present invention relates to a process for the production of thermoplastic substrate with fibrous surfaces. The fibers of these surfaces are formed by drawing away from a heated surface a molten polymer component backed by an unmelted polymer residue layer or substate. Simultaneous with the drawing, the nascent fibers are stabilized by cooling. For this purpose, cooling media are introduced in the fiber-forming zone. The thermoplastic polymer compounds should be applied in a thickness of at least 50 microns, and preferably 150 microns (when only 1 polymer forms the molten component), on a heated drawing surface of a drum or a conveyor belt apparatus. This invention relates to the production of fibrous surfaces on polymer substrates. Typically the substrates are in the form of webs. The use of webs makes the cooling process more efficient.