Title: Tool for welding together two plastics films wrapping an object

Abstract: A tool for interconnecting by means of welding two webs of a plastics film enclosing a package of goods, said tool comprising two sections arranged to be pressed against one another while securely holding and welding together said film webs and thereafter separate said webs from one another after welding. The tool comprises means arranged to tighten the film around the goods while maintaining the stretch of film web extending from the welding point towards the web supply rolls in a tension-free condition during the welding operation proper so as to ensure a high-quality and durable welding seam.

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Inventors: Grasvoll, Halvor (S-414 63 Goteborg, SW)

Application Number: 452212
Filing Date: 1974-03-18
Publication_date: 1976-01-20
Assignee:
Primary Class(es): 156/515 53/553, 53/557, 156/583.1
Other Classes:
US Patent Ref:

3236024	Feb, 1966	Bradley et al.	53/198.
3517479	Jun, 1970	Pinkham	53/182.
3596434	Aug, 1971	Zelnick	53/182.
3672116	Jun, 1972	Ingmarson	53/198.
3690090	Sep, 1972	Van deBilt	53/198.
3739547	Jun, 1973	Brevko et al.	53/182.

Other Refs:
Primary Examiner: Drummond, Douglas J.
Assistant Examiner: Wityshyn, M. G.
Attorney: Harness, Dickey & Pierce