B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 45/22 (2006.01) B31D 1/00 (2006.01) B65D 65/02 (2006.01)
Patent
CA 2129695
APPARATUS AND METHOD FOR HEMMING EDGES OF STRETCH FILM AND FILM HAVING HEMMED EDGES ABSTRACT A strip of stretch-wrap material having flat, double thickness hems at opposite margins thereof is disclosed. The hemmed strip is formed on apparatus including a first roller having a width less than the width of stock material fed into the machine, whereby opposite margins of the stock material project beyond opposite ends of the roller, and a second roller for guiding the strip at an acute angle from the first roller for causing the opposite marginal portions to fold. The strip is maintained under tension by a take-up roller or other means, and guide bars are provided for further folding the marginal portions past 90° angles so that they continue to be folded inwardly against the main body of the strip.
Finlayson & Singlehurst
Mima Incorporated
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