Electric hot wedge
AssigneeLeister Technologies AG
InventorsUlrich Gubler, Hannes Kühl
Life of this patent
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Abstract
The invention relates to an electric hot wedge (1) for a welding device for the seam-like connecting of plastic webs, having a welding wedge (2) and a welding wedge attachment (3) made of metal, wherein the welding wedge (2) comprises at least one electric heating resistor (13) having a heating conductor (16), which is bonded to a ceramic carrier (15) as a conductive layer (12) and is preferably protected by a ceramic cover layer. According to the invention, the welding wedge attachment (2) has a support structure (28) made of metal on the side thereof, which substantially extends across the entire length and/or width of the electric heating resistor (16) and which mechanically stabilizes the carrier (15) of the heating resistor (16).
Claims13
An electric hot wedge for a welding device for the seam-like connecting of plastic webs, having a welding wedge and a welding wedge attachment made of metal, wherein the welding wedge comprises at least one electric heating resistor having a heating conductor, which is bonded to a ceramic carrier as a conductive layer, and wherein the welding wedge attachment has a support structure made of metal on the side thereof, which substantially extends across the entire length and/or width of the electric heating resistor and which mechanically stabilizes the carrier of the heating resistor.
An electric hot wedge as claimed in claim1, wherein the electrical heating resistor has a flat, wedge-like shape, with the support structure being held in the interior of the heating resistor.
An electric hot wedge for a welding device for the seam-like connecting of plastic webs, having a welding wedge and a welding wedge attachment made of metal, wherein the welding wedge comprises at least one electric heating resistor having a heating conductor, which is bonded to a ceramic carrier as a conductive layer, and wherein the welding wedge attachment has a support structure made of metal on the side thereof, which substantially extends across the entire length and/or width of the electric heating resistor and which mechanically stabilizes the carrier of the heating resistor, wherein the support structure is arranged in the interior of the welding wedge.
Dependencies are inferred from the claim text.