Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Reexamination Certificate
2006-05-16
2006-05-16
Koch, George (Department: 1734)
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
C264S319000, C264S327000, C264S328140, C264S328160, C264S237000, C264S211000
Reexamination Certificate
active
07045085
ABSTRACT:
A bench-top molding process is disclosed in combination with an apparatus designed to heat a molding composition. In accordance with the present invention, the molding composition contains a thermoplastic elastomer and a plasticizer. The thermoplastic elastomer can be, for instance, a styrene-ethylene/butylene-styrene block copolymer. The plasticizer, on the other hand, can be mineral oil. The block copolymer can be chosen in conjunction with the plasticizer so as to have a bubble rise rate when heated equal to at least one half of the bubble rise rate of glycerin at room temperature. By having a bubble raise rate in the above range, it has been found that no significant amounts of air will be trapped in the molding composition when formed into a casting.
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Dority & Manning P.A.
Koch George
LandOfFree
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