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:
Mar. 28, 2000
Filed:
Dec. 09, 1998
Bernhard Eder, Linz, AT;
Franz Reitinger, Rottenegg, AT;
Hans-Michael Sulzbach, Konigswinter/Vinxel, DE;
Horst Klahre, Sankt Augustin, DE;
C.A. Greiner & Sohne Gesellschaft m.b.H., Kremsmunster, AU;
Abstract
A method of producing a three-dimensional shaped plastic foam part comprises the steps of mixing plastic foam granules of a predetermined range of sizes and of different hardness in a predetermined mixing ratio to obtain a mixture of the plastic foam granules, mixing the mixture of the plastic foam granules with a liquid primary material until the granules are coated with the liquid primary material and a mixture of coated plastic foam granules is obtained, feeding a preset quantity of the mixture of coated plastic foam granules into a mold cavity of a mold closed on all sides, reducing the volume of the mold cavity at least in partial regions thereof after it has been filled with the mixture of coated plastic foam granules, triggering a reaction of the liquid primary material by applying pressure and heat until a continuous cellular structure of plastic foam has been formed and the plastic foam granules have been interconnected by the cellular structure of plastic foam after the volume of the mold cavity has been reduced at least in partial regions thereof, ventilating gaseous reaction media from the mold cavity through openings in the sides of the mold, and removing the three-dimensional shaped part from the mold cavity.