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. 25, 1995
Filed:
Jul. 22, 1992
Jerry S Pool, High Point, NC (US);
L&P Property Management Company, Chicago, IL (US);
Abstract
A method of forming foam buns including the steps of pouring foam in a liquid state onto a fall plate, preventing the forming of skin on upper and lower surfaces of the foam during a creaming state thereof as the foam advances along the fall plate and onto and along a conveyor, removing the formed bun from the conveyor, and causing a cooling gas to be forced through upper and lower surfaces of the bun and through the bun to effectuate rapid cooling of the bun. To prevent a skin from forming on the lower surface the fall plate is insulated to prevent heat transfer from the lower surface to the fall plate and the consequent forming of a skin on the lower surface of the bun which would normally result. To prevent the skin from forming on the upper surface of the bun, sheets of plastic film are applied to the upper surface of the foam and advanced with the foam as the foam advances along the fall plate and onto and along the conveyor preventing loss of blowing agent from the upper surface and preventing air from coming into contact with the upper surface. Subsequently the sheets of film are removed, and porous upper and lower surfaces are revealed through which a cooling gas can readily be forced.