PLASTIC TUBE BODIES, AND METHOD FOR PRODUCING THEM
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United States of America Patent
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app pub date -
Jun 22, 2007
filing date -
Apr 30, 1997
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Abandoned
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Abstract
A method for producing a tube preform using an injection molding method. An injection molding method is used to produce tube preforms which can be constructed with either one layer or a plurality of layers. The preform subsequently is heated and biaxially expanded by compressed air. A tube can be obtained which, on the one hand, has a tube shoulder with the strength provided by an industrial thread and, on the other hand, has a side wall which exhibits the softness desired for a tube.
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