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Patent Searching and Data


Title:
METHOD AND DEVICE FOR MAKING TUBULAR BAGS OF THIN PLASTIC FILMS BY MEANS OF AN ULTRASOUND WELDING PROCESS
Document Type and Number:
WIPO Patent Application WO/2013/117383
Kind Code:
A1
Abstract:
The invention relates to a method and a device for making thin plastic films having two or more layers, which are subdivided and separated in the form of tubular bags for portioned reception of different products, wherein the plastic films are provided with welding seams running substantially transversely to the longitudinal direction with predetermined spacing between one another to form bag-like containers, and the containers are separated from one another by a cutting or separating process, the method being characterized by the steps: a) welding the films with predetermined spacing by means of an ultrasound welding process, maintaining a defined, film-dependent distance between a processing tool (1) and a counter tool (2) while welding; and b) separating the tubular bags welded in this way by means of a mechanical cutting process, with or without reduced ultrasound excitation at the point of the respective weld seams.

Inventors:
ROHRER HANS-PETER (CH)
LAUTZ CARSTEN (CH)
PETER HANS (CH)
Application Number:
PCT/EP2013/050536
Publication Date:
August 15, 2013
Filing Date:
January 14, 2013
Export Citation:
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Assignee:
PANTEC AG (CH)
International Classes:
B29C65/08; B29C65/74; B65B1/22; B65B9/12; B65B51/30
Foreign References:
EP1127794A22001-08-29
GB2248796A1992-04-22
US3816216A1974-06-11
Other References:
None
Attorney, Agent or Firm:
DREISS Patentanwälte (DE)
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Claims: