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:
Nov. 24, 2020
Filed:
Jun. 15, 2015
Continental Structural Plastics, Inc., Auburn Hills, MI (US);
Probir Kumar Guha, Troy, MI (US);
Michael J. Siwajek, Rochester Hills, MI (US);
Michael J. Hiltunen, Rochester, MI (US);
Shane Skop, Auburn Hills, MI (US);
CONTINENTAL STRUCTURAL PLASTICS, INC., Auburn Hills, MI (US);
Abstract
A molding composition formulation is provided that includes polypropylene, glass fiber, and a cellulosic powder used as a filler. The filler may be at least one of coconut shell powder, walnut shell powder, or rice hull. The molding composition formulation may further include natural cellulosic fiber illustratively including at least one of coconut fibers, bamboo fibers, sugar cane fibers, or banana skin fibers. The molding composition may be compression moldable long fiber thermoplastic (LFTD). The molding composition formulation may be used in thermoforming. In a specific embodiment of the molding composition, the formulation proportion of the polypropylene is 50 to 60 percent of the formulation; and the polypropylene substitute is 5 to 15 percent of the formulation, and in an alternative embodiment, the formulation proportion of the polypropylene is 40 to 80 percent, the cellulosic powder is 1 to 25 percent, and the glass fiber is 1 to 50 percent.