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:
Dec. 15, 1998
Filed:
Mar. 31, 1997
Applicant:
Inventors:
Gary R Wilkes, Saratoga Springs, NY (US);
Harris A Dunbar, Corinth, NY (US);
Kim A Bly, Queensbury, NY (US);
Eugene R Uhl, Russell, NY (US);
Assignee:
Tenneco Protective Packaging, Inc., Glens Falls, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264 50 ; 264 51 ; 264D / ; 521 97 ;
Abstract
Members either of the polyglycol family of substances, more generally, or of the polyglycol ether subset of polyether compounds, more particularly, both for their gas absorption properties and for their plasticizing effect in a polyethylenic extrudate, are combined with physical atmospheric blowing agents, such as, nitrogen, argon, carbon dioxide, water, and blends thereof, to produce uncrosslinked polyethylenic foams having densities as low as 10 kg/m.sup.3.