Elastomeric compressible metallic mixture
OwnerJudith A. Maszalecinventor
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Abstract
This invention provides an elastomeric compressible mixture having the compressible properties of a rubber or rubber-like compound with the heat characteristics of a conductive metal member. This compound material is made of two parts tetrafluoro ethylene powder and the remainder about seventy-five parts of heat-conductive metal powder such as aluminum powder and twenty-five parts silicone rubber. This compound is attached as a flat sheet to a conductive metal backup member or may be a cover for a conductive metal roll. This mixture is used to accommodate irregular thicknesses of thermoplastic films. This elastomeric mixture as a material is used with heat and pressure to effect a seal of the heated thermoplastic film to an adjacent film.
Claims12
An elastomeric compressible mixture having the compressible properties of stiff rubber or rubber-like mixtures and heat-transfer characteristics and capabilities of metal such as aluminum, this mixture for use as a flat sheet or as a roll covering and as and when disposed in contiguous relationship with a heat-conductive metal backup, said mixture including:
- (a) at least two parts of a powder having release properties when and as heat above one hundred fifty degrees Fahrenheit is present, and
- (b) the remainder of heat-conductive metal powder in a range of fifty to seventy-five percent and of rubber or rubber-like material, the heat-conductive metal powder provided in this compressible mixture having a sufficient heat-transfer capability that heat from the metal backup is able to travel through said sheet or covering to an outer surface thereof to provide a desired surface temperature.
Dependencies are inferred from the claim text.