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:
Nov. 03, 1992
Filed:
Apr. 16, 1990
Eusebio Lucca, Vercelli, IT;
Paul H Gillard, Roccatederighi, IT;
Matec Holding AG, , CH;
Abstract
The present invention relates to a method and apparatus for producing a formed structural element of fiber material bonded with synthetic resin such that a fine-grained or flowable synthetic resin bonding agent is sprinkled on or sprayed on a nonwoven fabric made entirely or predominantly of natural fibers. The nonwoven fabric which is permeated with synthetic bonding agent is fragmented, whereupon the parts are stored in a tower on a perforated female mold which belongs to a molding press and are precompressed on the female mold by means of an air stream that is suctioned through the perforations. To produce formed structural elements with a stable shape, the synthetic resin bonding agent, after a similarly perforated male mold has been placed on top and pressed on, is hardened by means of a hot air stream that is conducted through the perforations in the male mold and the female mold.