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:
Jun. 13, 1995
Filed:
Dec. 14, 1993
Naohisa Miyakawa, Inba, JP;
Katsuhisa Kato, Kitasouma, JP;
Tokiwa Chemical Industries Co., Ltd., Chiba, JP;
System Technical Co., Ltd., Ibaragi, JP;
Abstract
A method for manufacturing a weather strip for motor vehicles, wherein the weather strip body is provided with a protective film having a low friction characteristic and an increased tightness on an abutment portion with which the glass pane of the vehicle door is brought into contact. An olefin polymer based resin or a foamed material thereof, is extruded from one extrusion molding machine into a mold, is so to form the weather strip body, while a mixture consisting of a base material of an olefin polymer based resin having low viscosity and high fluidity and grains of particles of an additive material of an olefin polymer based resin having a high viscosity and low fluidity is extruded from another molding machine into the mold, so as to form the protective film. The weather strip body and the protective film are co-extruded and polymerized in the mold, and a rough surface having a plurality of protrusions is formed by the grains or particles of the additive material on the surface of the protective film.