Method of making a paper tube
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United States of America Patent
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-
Mar 12, 1985
Grant Date -
N/A
app pub date -
Dec 18, 1981
filing date -
Dec 18, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of manufacturing spiral winding paper tube, the surface of which is ground, coated with colored synthetic resin and ground again after coating. By this way, paper tube of any length, with variously colored and very smooth surface of appropriate hardness, will be gained continuously and economically.
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