Electric heating – Heating devices – Combined with pressure application means
Patent
1982-08-16
1985-02-26
Bartis, A.
Electric heating
Heating devices
Combined with pressure application means
30140, 83171, 156251, 1563046, 156515, 156518, 1565831, 219221, 219227, 219544, 338248, 338250, 338251, 338255, 604408, B29C 2706, H05B 310, B26D 710
Patent
active
045019517
ABSTRACT:
An electric heating element for sterilely cutting and welding together a pair of thermoplastic tubes transversely of the axis of each tube includes as an outer layer a folded sheet of a metal, such as copper, aluminum, silver or gold, having a thermal conductivity of at least about 173 watts/m.degree.K at a thickness of 0.10 mm and a tensile yield strength of at least 34.times.104 kPa at a 0.10 mm thickness. A resistance heating element, preferably having a positive thermal coefficient of resistance (PTC), in the form of a resistor of stainless steel or the like is disposed inside the fold of the metal sheet and a layer of dielectric adhesive, such as an epoxy or acrylic adhesive, stable to about 260.degree. C., is disposed between the inner surfaces of the metal sheet and the resistor to insulate the resistor from the folded sheet and bond the resulting structure together. The folded edge of the metal sheet forms the melting edge of the heating element. The heating element has a thickness of from about 0.13 mm. to about 0.76 mm.
REFERENCES:
patent: 1005360 (1911-10-01), Taylor
patent: 1705696 (1929-03-01), Woodson
patent: 2425088 (1947-08-01), Dean
patent: 2615111 (1952-10-01), Paquette et al.
patent: 2859321 (1958-11-01), Garaway
patent: 2863036 (1958-12-01), Mitchell et al.
patent: 2866068 (1958-12-01), Bernstein
patent: 3010007 (1961-11-01), Theodore et al.
patent: 3922386 (1975-11-01), Ros
patent: 4369779 (1983-01-01), Spencer
"Thermofoil Heat Fusers", Bulletin TF-5, Revised Mar. 1975, Minco Products, Inc., Minneapolis, Minnesota.
"Thermofoil Heaters", Bulletin TF-4, revised Aug. 1973, Minco Products, Inc., Minneapolis, Minnesota.
Benin Joshua
Luoma, II Robert P.
Bartis A.
E. I. Du Pont de Nemours and Company
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