US 4,292,118 AGranted

Impulse heat generation and sealer apparatus

OwnerIhor Wyslotskyinventor

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Abstract

The improved impulse heat generation and sealer apparatus of the present invention comprises preferably a metallic heat sink block bearing a shallow groove on the face surface thereof. The shallow groove is lined with a thin layer of an electrical insulator/heat conductor and the groove is filled with a preferably metallic electrically conductive material to form a smooth and preferably co-planar surface with the face surface of the metallic block. This smooth surface is coated with a thin layer of a release coating. A resilient mating surface is provided in preferred embodiments for reciprocating motion, whereby an electrical impulse rapidly generates heat in the groove filler material to bond together sheets of a polymeric material disposed between the mating surfaces, and the heat is rapidly dissipated to prevent damage to the sealed sheets. In other embodiments, the heat sink structure may be utilized in heat radiators or any other fast cycling heat exchanger.

Claims32

Dependent claims

An improved impulse heat generation and sealer apparatus, said apparatus comprising:

an electrically conductive heat sink block having thereon a smooth face surface;
a relatively shallow groove formed in said face surface;
an electrical insulator/heat conductor film lining of said shallow groove;
a groove filler material of substantial electrical conductivity, substantial thermal shock resistance, substantial ability to expand and contract rapidly without damage, and substantial resistance to abrasion, said groove filler material disposed within and filling said shallow groove and having an outer surface which is smoothly co-extensive with said smooth face surface of said heat sink block;
a thin layer of substantially uniform thickness of release coating material disposed on said smooth outer surface of said heat sink block and across said smoothly co-extensive outer surface of said groove filler material, said release coating layer having a substantially smooth outer surface;
and
electrical connector means attached to said groove filler material to provide electrical current thereto for the rapid generation of heat in said groove filler material.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/147,554Filed 8 May 1980
Granted: 29 Sep 1981
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

B29C 66/80
General aspects of processes or apparatus for joining preformed parts: general aspects of machine operations or constructions and parts thereof
B29C 65/18
By heating, with or without pressure: using heated tools
B29C 65/226
Characterised by the type of heated wire, resistive ribbon, band or strip: characterised by the cross-section of said heated wire, resistive…
B29C 65/228
Heated wire resistive ribbon, resistive band or resistive strip: characterised by the means for electrically connecting the ends of said heated…