Welding apparatus

Details Welding apparatus Welding apparatus

1997-11-19

2000-04-18

Sells, James

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With separate heating means for work

156544, 156555, 156574, B32B 3108

Patent

active

060503173

ABSTRACT:
A welding apparatus is provided for welding overlapping film edges. In order to plasticize film edges, the apparatus includes a heating element with converging heating surfaces over which the film edges are guided. A least one leaf spring extends from a support to resiliently suspend the heating element to permit movement of the heating element perpendicular to the heating surfaces.

REFERENCES:
patent: 4146419 (1979-03-01), Neidhart
patent: 4504352 (1985-03-01), Meyer
patent: 4655872 (1987-04-01), Neumuller et al.
patent: 4872941 (1989-10-01), Lippman et al.
patent: 4923558 (1990-05-01), Ellenberger et al.
patent: 5051148 (1991-09-01), Resch
patent: 5169052 (1992-12-01), Kaminski
patent: 5490626 (1996-02-01), Kaminski
patent: 5624511 (1997-04-01), Lippman
EPO Search Report, Jun. 10, 1999.

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