High speed injection molding apparatus and method for dental floss holder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 8, 2003
Grant Date -
N/A
app pub date -
Feb 17, 2000
filing date -
Feb 17, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An injection molding apparatus for manufacturing dental floss holders has at least one strand of dental floss from a supply spool extended through the space between mating mold pieces and thereafter to a take-up device. From each injection stage of the molding cycle a rack of connected dental floss holders is produced. Tension of the floss is maintained from the upstream supply spool by a first tensioning device through the mold to the downstream end by the take-up device. During each injection cycle the take-up device engages another rack of molded parts and moves it to a downstream position where it is severed from the strand of floss while it maintains the tension in the floss upstream of the severed rack. This is achieved by the take-up device engaging at least two successive racks downstream of the mold and using the rack closest to the mold to maintain tension.
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Family
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