Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Extrusion molding
Patent
1993-11-12
1995-10-17
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Extrusion molding
26417719, 264236, 26417128, 264494, 4251748R, B29C 4788, B29C 7104
Patent
active
054588243
ABSTRACT:
The present invention provides a non-rusting unitary co-extruded article, which may be used for a variety of purposes, including a seal. The co-extruded article includes at least two dissimilar discrete parts such as a rubber component, referred to herein as the "rubber extrudate," and a thermoplastic component, referred to herein as the "plastic extrudate." A particular advantage of the invention is that the rubber extrudate and thermoplastic extrudate are cohesively joined at their interface. By cohesively joined, it is meant that the two extrudates stick together tightly without the necessity of a separate adhesive. Where hardness is desired of the thermoplastic extrudate, ethylene vinyl acetate is generally preferred. Where a seal is desired, the rubber extrudate includes ethylene propylene diene rubber, which provides a suitable seal. The invention also relates to a method for making the same.
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Hertrick Timothy T.
Peak Mary A.
Powers Thomas O.
The Geauga Company
Thurlow Jeffery R.
LandOfFree
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