Unwinder
a technology of unwinding and sleeve, which is applied in the direction of external support, packaging, feeding apparatus of wrapping materials, etc., can solve the problems of affecting the quality of unwinding,
Inactive Publication Date: 2013-08-01
MULTIVAC SEPP HAGGENMULLER GMBH & CO KG
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The invention allows for easy positioning of film material relative to a holding mandrel, regardless of the way the film is carried on a reel. The invention uses a technique called acoustic signaling to guide the operator to the optimal position, by detecting the distance between the film and the end face of the mandrel and providing a recurring tone at different intervals to indicate when the film is close to or far from the end face of the mandrel. This makes it easier for the operator to position the film correctly, ensuring the best quality results.
Problems solved by technology
If this is not the case, wrinkles may be formed in the film material.
In addition, sealing and cutting errors may occur during the packaging process due to malpositioning of the film reel on the holding mandrel, and this would be problematic especially in the case of imprinted films
Such color marks do, however, not lead to precise positioning of the film reel on the holding mandrel.
Moreover, such color marks are often smeared when the film reel is pushed onto the holding mandrel.
If the operator orients himself only according to the film reel carrying the film material, undesired tensions may be caused in the film material during the packaging process.
Method used
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[0046]The invention will now be described with reference to the drawing figures, in which like reference numerals refer to like parts throughout. For purposes of clarity in illustrating the characteristics of the present invention, proportional relationships of the elements have not necessarily been maintained in the drawing figures.
[0047]The following detailed description of the invention references specific embodiments in which the invention can be practiced. The embodiments are intended to describe aspects of the invention in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments can be utilized and changes can be made without departing from the scope of the present invention. The present invention is defined by the appended claims and the description is, therefore, not to be taken in a limiting sense and shall not limit the scope of equivalents to which such claims are entitled.
[0048]FIG. 1 shows a packaging machine 10, here a tray seal...
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Abstract
The present invention relates to an unwinder for a packaging machine, in particular for a thermoformer or tray sealer, comprising a holding mandrel provided for receiving thereon a film reel having a film wound thereon. The unwinder comprises a measuring module configured to detect a distance to an end face of the film wound on the film reel and / or a distance to a stop member.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This Application claims priority to German Application Number 102012001816.9 filed Jan. 31, 2012, to Luciano Capriotti and Andreas Gschwind entitled “Unwinder,” currently pending, the entire disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to an unwinder that may be primarily used in the field of packaging machines.BACKGROUND OF THE INVENTION[0003]An unwinder for a tray sealer is already known to those skilled in the art. The unwinder comprises a film unwinder as well as a film winder. The film unwinder comprises a holding mandrel provided for carrying a film reel. The holding mandrel is secured to a housing supported on the tray sealer. The film is fed from the film unwinder into the packaging machine for a sealing process. A residual film resulting from the sealing process is wound by means of the film winder.[0004]It is important that the film reel is positioned on the ho...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B65B41/12B65B57/02
CPCB65B41/12B65B57/18B65B57/02B65H19/123B65H2301/4132B65H2301/41829B65H2511/22B65H2801/81B65H2220/03
Inventor CAPRIOTTI, LUCIANOGSCHWIND, ANDREAS
Owner MULTIVAC SEPP HAGGENMULLER GMBH & CO KG