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:
Jun. 10, 1980
Filed:
Nov. 20, 1978
Derk J Boon, University Research Park, NC (US);
Reeves Brothers, Inc., New York, NY (US);
Abstract
A process and apparatus are disclosed for the continuous production of polyurethane foam. The invention is directed to the use of a laterally translating mold, the first portion of which has divergent side walls, including a 'V'-shaped mold having divergent straight vertical side walls. A polyurethane reaction mixture is deposited at or near the apex of that mold. The deposited mixture can be a partially-expanded prefoamed fluid mixture formed, for example, by a centrifugal mixing means. Typically, the mixture is permitted to substantially complete its rise after being conveyed past the extremeties of the divergent side walls of the first mold portion. The invention contemplates use of a ratio of conveyor velocity to foam product height lower than those of the prior art. Both rectangular and circular cross sectional products can be produced.