Heat sealing apparatus for plastic bags

Details Heat sealing apparatus for plastic bags Heat sealing apparatus for plastic bags

1998-05-29

1999-09-07

Gerrity, Stephen F.

Presses

With additional treatment of material

Heating, cooling, or drying

100326, 156579, B30B 1534

Patent

active

059470194

ABSTRACT:
An improved plastic bag sealing apparatus comprised of an improved heater formed of a heating wire embedded in a silicon rubber material. The heater is shaped to conform to the flat planar surface of a T-bar shaped heating element, and clamped in place with insulators to provide maximum transfer of heat to a heating edge formed by the web portion of the T-bar. In an optional configuration the heater is in the form of a tubular rod seated in a channel in the T-bar directly above the heating edge for transferring maximum heat to the heating edge. The containment of heat and transfer of maximum heat to the T-bar permits a substantial improvement in thermal efficiency and a substantial reduction of power consumption. The heating edge of the T-bar is covered with an easily replaceable heating channel coated with a non-stick, heat resistant material such as polytetraflouroethylene (TEFLON).

REFERENCES:
patent: 2638964 (1953-05-01), Andina
patent: 3106630 (1963-10-01), Klamp
patent: 3165622 (1965-01-01), Marzec
patent: 3236174 (1966-02-01), Hutchinson et al.
patent: 3375777 (1968-04-01), Techtmann et al.
patent: 3721602 (1973-03-01), Bosse
patent: 3779838 (1973-12-01), Wech
patent: 4431474 (1984-02-01), Gronek et al.
patent: 5266150 (1993-11-01), Miller
patent: 5826503 (1998-10-01), Hutchinson

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