Dow Corning Corporation

Daniel N Kemp

Ronald W Wieck

Timothy W Mitin

Christopher C Shirk

David J Cimbalik

Kenneth J Rohman

Dennis M Schnettler

This invention provides a continuous profile comprising a crosslinked foam matrix and a continuous filament embedded within the matrix. The profile is prepared by 1) extruding in an upward direction a composite consisting essentially of a foamable and crosslinkable composition containing a continuous filament, followed by 2) crosslinking and foaming the composition while the composition is in a substantially non-flowing state and supported by the filament.

Method for preparing a continuous foam profile containing a filamentary

Colored silicone sealant are made in an apparatus by (i) programming a central computer to control the operation of a mixing device and a plurality of dosing units actuated by a ball screw table/servo-motor mechanism; (ii) supplying sealant base and pigments to the dosing units; (iii) activating the ball screw table/servo-motor mechanism in response to signals from the computer; (iv) metering predetermined volumes of sealant base and pigments at a predetermined rate; (v) conveying metered portions to the mixing device; and (vi) dispensing colored silicone sealant into a cartridge.

Method and apparatus for color matching of silicone sealants

A nozzle assembly (24) for filling a container with a homogeneous mixture of viscous liquids includes a housing (28) having an inner passageway (40) extending therethrough defining a longitudinal axis (42) of the housing (28) and an axially rotatable drive shaft (44) supported by the housing (28) and extending through the passageway (40) along the longitudinal axis (42). A folding mechanism includes stationary pins and moving pins mounted tangentially relative to a centrally disposed drive shaft (44) disposed along the longitudinal axis (42) for folding the liquids flowing through the passageway (40) while preventing columns of unmixed liquid from flowing axially along the drive shaft (44).

Nozzle mixer assembly

A trapped rubber molding method including a die positioned within a fixed-volume, rigid mold, the die being surrounded by an integral solid silicone rubber material which has been cured within the mold at an elevated temperature. The die and mold closure are thermally isolated from the remainder of the mold. The die and the silicone rubber material adjacent thereto are selectively heated and cooled. The opposite end of the mold is selectively heated and cooled. This configuration results in the ability to independently control temperature and pressure on the molded part during the molding process.

Fixed-volume, trapped rubber molding method

A trapped rubber molding apparatus including a die positioned within a fixed-volume, rigid mold, the die being surrounded by an integral solid silicone rubber material which has been cured within the mold at an elevated temperature. The die and mold closure are thermally isolated from the remainder of the mold. The die and the silicone rubber material adjacent thereto are selectively heated and cooled. The opposite end of the mold is selectively heated and cooled. This configuration results in the ability to independently control temperature and pressure on the molded part during the molding process.

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Midland, MI, United States of America

Daniel N Kemp