Felting coiled sleeve and method for preparing the same
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United States of America Patent
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Aug 10, 1993
Grant Date -
N/A
app pub date -
Oct 4, 1991
filing date -
Oct 3, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A felting coiled sleeve has closely fibrous structure and a substantially cylindric shape. The sleeve is put on a body of roller suitable for carrying an aluminum extruded shape or a surface treating steel sheet. The sleeve is prepared by attaching reinforcing thread with straight stitches along one longitudinal side of a felting strip by sewing and curving moderately the strip in a horizontal plane simultaneously. Then the curved strip is bent into a helical shape through a pair of conical rollers, winding the strip tightly round a shaft of a device for obtaining sleeve, applying pressure on one side face of the wound strip, fixing the compressed strip in the cylindric shape, and smoothing the outer surface of the coil.
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