Method for making electrical heating mats from an expanded foil-

Details Method for making electrical heating mats from an expanded foil- Method for making electrical heating mats from an expanded foil-

1981-03-10

1982-10-19

Massie, Jerome W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

29611, 29613, 29619, 156 52, 156199, 156229, 156257, 156269, 156353, 156495, 156324, 156301, H01B 702, H01B 1300, H01C 1728

Patent

active

043548865

ABSTRACT:
This invention relates to a continuous method for making electrical heating mats suitable for installation on room floors, walls and ceilings, which method includes the steps of cutting transverse cuts in a longitudinal composite metal/plastic foil material (2) and stretching the foil in a controlled way in order to provide a meander pattern of electrical resistance strip material, the method also including steps of making unit length mats with predetermined ohmic resistance and steps of providing terminations.

REFERENCES:
patent: 2320092 (1943-05-01), Miller
patent: 3149406 (1964-09-01), Eisler
patent: 3255065 (1966-06-01), Wyckoff
patent: 3427712 (1969-02-01), Witdoeckt
patent: 3668956 (1972-06-01), Whipple et al.
patent: 4025893 (1977-05-01), Bergerson
patent: 4089090 (1978-05-01), Westberg

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