Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Reexamination Certificate
2007-02-20
2007-02-20
Kuhns, Allan R. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
C264S237000, C425S00400R, C425S089000, C425S224000, C425S81700C
Reexamination Certificate
active
10344122
ABSTRACT:
Production of foamed materials in a horizontal machine, and said machine itself, reactants being fed to a conveyor at one end of the machine and foam produced being removed at the other end, wherein the foam is generated in an expansion chamber defined at its inlet by a closed reactant feed zone, at its outlet by a body of foam already expanded or partly expanded, and laterally and vertically by travelling webs, the webs giving a diverging cross section to the chamber.
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Calkins Charles W.
Cannon Viking Limited
Kuhns Allan R.
Wimbish J. Clinton
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