Joining
The areas to be welded are supposed to connect with a velocity of near zero. The necessary jointing pressure is preferably applied in linear increase and is, for instance, 0.15 ± 0.01 N/mm2 for PE. Sudden use of full pressure would press the hot plastic material out of the welding zone which would result in an inadequate weld factor [Simona11]. The jointing pressure has to be maintained during the cooling-off period. |
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