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:
Jul. 08, 2003
Filed:
Dec. 31, 2001
Burch E. Zehner, Gahanna, OH (US);
Crane Plastics Company LLC, Columbus, OH (US);
Abstract
The present invention is a foam composite wood replacement material and a method for its manufacture. One embodiment of the present invention is a cellulosic/polymer foamable composite material. The composite material may include at least one cellulosic filler in the amount of about 20% to about 60% by weight and a plastic material in the amount of about 40% to about 80% by weight. The plastic material may include stabilizer(s) in an amount of about 1 to about 10 parts per 100 parts of a polymer resin, lubricant(s) in an amount of about 1 to about 12 parts per 100 parts of the polymer resin, process aid(s) in an amount of about 2 to about 15 parts per 100 parts of the polymer resin, and blowing agent(s) in amount of about 0.25 to about 5 parts per 100 parts of the polymer resin. Examples of the polymer resin are polyvinyl chloride and polypropylene. The foamable composite may be used to make structural components such as siding units.