Electric heating – Heating devices – Combined with pressure application means
Patent
1989-04-13
1990-08-28
Bartis, Anthony
Electric heating
Heating devices
Combined with pressure application means
1565833, 1565837, 219228, 219535, 219549, H05B 300, B30B 1534
Patent
active
049527770
ABSTRACT:
An electric heat-sealing heater has a flat heating sheet member having embedded therein a resistance heating element. The sheet member is supported on a rigid guide with an elastic rubber sheet interposed between the guide and the sheet member. A flexible copper heat accumulating block having a plurality of slits alternately extending in a direction transverse of the heater is positioned on the side of the heating sheet member opposite to the rubber sheet and is retained in place by a holder having a pair of arms and mounted on the guide. The flexible block is adapted to be pressed against the material to be heat-sealed and accommodates any uneven surfaces on the parts being sealed.
REFERENCES:
patent: 2620427 (1952-12-01), Mickel
patent: 3067309 (1962-12-01), Chinn
patent: 3269885 (1966-08-01), Cianci
patent: 3817172 (1974-06-01), Horton
patent: 4016021 (1977-04-01), La Fleur
patent: 4445025 (1984-04-01), Metz
Bartis Anthony
Fuji Photo Film Co. , Ltd.
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