Method of manufacturing a heat-resistant resinous tube
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United States of America Patent
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Jul 18, 1995
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N/A
app pub date -
Nov 19, 1993
filing date -
Oct 29, 1993
priority date (Note) -
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Abstract
A method of manufacturing and mass-producing a seamless heat-resistant resinous tube with a uniform tube wall thickness and circumference, which includes the steps of coating the precursor solution of a tube material to the surface of a core at a thickness greater than the tube wall thickness; passing a metallic die having a wider inside diameter than the diameter of the core along the outside of the core by utilizing the resistant force of the precursor solution without restricting the metallic die or the core, thus forming a tube around the core; treating the tube around the core to give it strength as a tube; and separating the tube from the core.
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