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:
Feb. 15, 1994
Filed:
May. 27, 1993
Applicant:
Inventor:
Gunter G Fuss, San Mateo, CA (US);
Assignee:
Free-Flow Packaging Corporation, Redwood City, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B29B / ;
U.S. Cl.
CPC ...
156 84 ; 156 85 ; 156 94 ; 156497 ; 156499 ; 264 37 ; 264230 ; 264321 ; 264322 ; 2643 / ; 264D / ; 264D / ; 264D / ; 425 / ;
Abstract
System and method for densifying expanded thermoplastic foam materials such as loose fill packing materials, larger blocks of such materials, and food and beverage service items to reduce the volume of such materials for recycling or disposal. The material is heated to soften the material and expel gas from cells within the material and thereby shrink the material to a reduced volume. In some embodiments, and the material is further densified by compacting the heat softened material to further reduce the volume.