Stitching gear assembly having perforating projections thereon, for use in converter adapted to produce pad-like cushioning material, and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 6, 1990
Grant Date -
N/A
app pub date -
May 3, 1989
filing date -
May 3, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gear-like stitching assembly adapted for use in a converter mechanism of the type providing for the production of pad-like cushioning dunnage product from sheet-like stock material which is conventionally disposed in multi-ply, roll form for use with the converter mechanism. The stock material is pulled from the stock roll by the converter and the lateral edges of the stock material are rolled inwardly prior to being formed into the pad-like product. The stitching assembly comprises a pair of rotatable gear-like members adapted to be disposed in coacting, meshed condition, and to stitch confronting and generally abutting rolled edge portions of the sheet-like stock material together by coining, as the latter rolled edge portions pass between the members. The teeth of at least one of the members have projections extending outwardly thereform, for perforating the stock material along the central coined section of the pad-like product, to aid the coined section in maintaining the product in its pad-like form. A novel method is also disclosed.
First Claim
Other Claims data not available