Apparatus and method for capping wide web reclosable fasteners
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United States of America Patent
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Jan 18, 2005
Grant Date -
May 1, 2003
app pub date -
Nov 1, 2001
filing date -
Nov 1, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for capping a stem web including passing the stem web through a first nip against a first heated nip roll so as to partially cap the stems; cooling the web; and passing the stem web through a second nip against a second heated nip roll to completely cap the stems to a diameter 'D'. In preferred embodiments the two nips are on opposite sides of a larger central cooled roll positioned between the heated rolls. Preferably, the reaction forces between the rolls are measured and controlled at each end of each other heated rolls. The invention is particularly adapted to making abrasive particles that are attached to a driving mechanism via headed stem fasteners formed by the method.
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