US 7,063,453 B2Granted

Enhanced thermal conduction in apparatus for plasticating resinous material

AssigneeXaloy, Inc.

InventorsTimothy W. Womer, Payton R. Lewis

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Abstract

An apparatus for plasticating rubber, thermoset or thermoplastic materials according to this invention includes a barrel having a wall extending axially and laterally and having an outer surface and an inner surface. The wall has a thickness formed with mutually spaced holes extending at least partially through the thickness. The barrel is formed of material having a first, relatively low coefficient of thermal conduction conductors having a coefficient of thermal conduction greater than the first coefficient are each located in and engage a hole. Heat applied to the outer surface is conducted rapidly through the wall thickness along the length of the conductors to the inner surface, thereby heating and cooling material being processed located in a cavity surrounded by the wall.

Claims11

Dependent claims

An apparatus for plasticating resinous material, comprising:

a barrel formed of material having a first coefficient of thermal conduction, including a wall extending axially and laterally and having an outer surface and an inner surface, the wall having a thickness formed with mutually spaced holes extending at least partially through the thickness;
and
conductors having a second coefficient of thermal conduction greater than the first coefficient, each conductor located in and engaging a hole, each hole is any of a first group including a cylindrical hole, a stepped cylindrical hole and a conical holes, each hole including a radial surface and a radially inner bottom surface, the radial surface extending from the outer surface partially through the thickness toward the inner surface and the bottom surface, the bottom surface having any of a second group including a flat surface, a beveled surface, and a surface having a spherical radius;
and
each conductor is any of third group including a cylinder, a stepped cylinder and a conical cylinder, each conductor being sized to fit within its corresponding hole and to engage the radial surface of said hole.

2 more elements

An apparatus for plasticating resinous material, comprising:

a barrel formed of material having a first coefficient of thermal conduction, including a wall surrounding a cavity, the wall extending axially and laterally, having an outer surface and an inner surface, and a thickness containing mutually spaced hales extending at least partially through the thickness;
and
a rotatable screw located within the cavity, including an axial core, and a main flight arranged helically on, and extending radially from the core, and including a push surface for urging material to move along the barrel as the screw rotates;
and
a plurality of conductors having a second coefficient of thermal conduction greater than the first coefficient, each conductor located in and engaging a bole, each hole is any of a first group including a cylindrical hole, a stepped cylindrical hole and a conical holes, each hole including a radial surface and a radially inner bottom surface, the lateral surface extending from the outer surface partially through the thickness toward the inner surface and the bottom surface, the bottom surface having any of a second group including a flat surface, a beveled surface, and a surface having a spherical radius;
and
each conductor is any of a third group including a cylinder, a stepped cylinder and a conical cylinder, each conductor being sized to fit within its corresponding hole and to engage the radial surface of said hole.

4 more elements

Dependencies are inferred from the claim text.