Title: Process for shirring tubular films and product thereof

Abstract: In apparatus for shirring tubular films, the shirring rollers rotate not only about their own axes but also about the longitudinal axis of the shirring mandrel. This gives increased and more uniform compression.

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Inventors: Winkler, Bruno (D-694 Weinheim-Oberflockenbach, DE, US)

Application Number: 836047
Filing Date: 1977-09-23
Publication_date: 1979-11-27
Assignee:
Primary Class(es): 426/140 138/118.1, 452/25
Other Classes:
US Patent Ref:

2630598	Mar, 1953	Grey	17/1.
2981971	May, 1961	Zubrychi	17/1.
2984574	May, 1961	Matecki	17/42.
3594857	Jul, 1971	Michl	17/42.
3704483	Dec, 1972	Urbutis et al.	17/49.
3779284	Dec, 1973	Tums	17/42.
3907003	Sep, 1975	Regner et al.	17/42.

Other Refs:
Primary Examiner: Abercrombie, Willie G.
Assistant Examiner:
Attorney: Brumbaugh, Graves, Donohue & Graves