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:
Apr. 07, 2009
Filed:
Nov. 30, 2007
Dimitri Peter Zafiroglu, Centreville, DE (US);
Dimitri Peter Zafiroglu, Centreville, DE (US);
DZS, LLC., Midlothian, VA (US);
Abstract
The present invention concerns a method for recycling used floor covering. Post-consumer or post-industrial fibrous floor coverings are shredded to form a fibrous dispersion. The dispersion is maintained at a content of about 20-65% low-melt thermoplastic. The shredded fibrous dispersion is conveyed into a chute feeder which converts it into a batt that is heated, compressed, and cooled to form a durable backing particularly suitable for flooring applications. The batt comprises vertical layers or strata of fibers to provide additional cushion for the backing. Additionally, a portion of the shredded fibrous dispersion can also be diverted and used to form a face layer and/or adhesive layer for a reconstituted floor covering.