Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Reexamination Certificate
2011-08-09
2011-08-09
Johnson, Christina (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
C264S041000, C264S050000, C264S328100, C425S00400R, C425S00400R, C425S207000, C425S542000, C425S557000, C425S81700C
Reexamination Certificate
active
07993554
ABSTRACT:
A method for the manufacture of a molding composition from a raw material melt which is charged with an additive includes the steps: charging a conveyor apparatus with a raw material which includes a liquid or gooey pasty composition or a granulate; converting the raw material into a raw material melt by heat supply to the raw material; charging the raw material melt with an additive; mixing of the raw material melt with the additive to produce a molding composition; and discharging the molding composition from the conveyor apparatus. The charging of the raw material melt with the additive takes place through a metering device which is arranged in a passage section of the conveyor apparatus and/or subsequent to the conveyor apparatus with the raw material melt flowing through and/or around the passage section. The metering device includes at least one metering element which is arranged in a recess of the passage section.
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Habibi-Naini Sasan
Schlummer Christian
Carella, Byrne, Cecchi
Hand Francis C.
Johnson Christina
Schiffman Benjamin
Sulzer Chemtech AG
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