RESISTANCE HEATING ELEMENT FOR HEAT WELDING

PROBLEM TO BE SOLVED: To provide a resistance heating element for heat welding which can raise welding strength and sealability.SOLUTION: The resistance heating element is made in the following. Cuts 2 are alternately formed along both edges of the resistance heating element 1. When the resistance h...

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Bibliographische Detailangaben
Hauptverfasser:	KANO MASAAKI, HANYU TAKESHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a resistance heating element for heat welding which can raise welding strength and sealability.SOLUTION: The resistance heating element is made in the following. Cuts 2 are alternately formed along both edges of the resistance heating element 1. When the resistance heating element 1 is assembled in a welding channel 11 formed in a welding face of a member 10 to be welded, and an electric voltage is loaded on an electricity feeding parts 3 and 3a of the resistance heating element 1 while the welding rib 13 on the member 12 to be welded side is pressed on the resistance heating element 1, the resistance heating element 1 generates heat, and a resin surrounding this is melted by this heat, and the melted resin enters the cuts 2 of the resistance heating element 1, and the resistance heating element 1 is strongly fixed at the welded part when it is solidified. As the result, cracks or the like are prevented from being generated in the welded part caused by a stress accompanied by stretching and contraction of the resistance heating element 1 to be generated caused by a difference in coefficients of thermal expansion of the resistance heating element 1 and the resin, and the welding strength and the sealability are raised thereby.