Method and device for applying a plastic film around a product to be packaged

Abstract

A method for applying a wrapping plastic film band (15) around a product (16) to be packaged, according to which method the wrapping plastic film band is wrapped to form a film girdle (18) around supporting elements (21), from where it is transferred to a position around the product (16) to be packaged. A device for applying a wrapping plastic film band around a product to be packaged comprises supporting elements (21, 22), upon which the wrapping plastic film band is wrapped, and transfer elements (21, 23) for transferring the film girdle to a position around the product to be packaged.

Description

METHOD DISCLOSED BY THE INVENTION [0001] The present invention relates to a method for applying a plastic film around a product to be packaged, according to which method [0002] the product to be packaged is moved to a position inside a plastic film girdle of shrinkable and / or stretchable plastic placed on a supporting frame consisting of supporting elements and having a circumference larger than the circumference of the product to be packaged, or correspondingly the plastic film girdle is moved to a position surrounding the product to be packaged, [0003] whereupon the supporting frame consisting of supporting elements is removed from inside the plastic film girdle, with the result that the plastic film girdle is tightened around the product to be packaged. PRIOR ART [0004] A method for applying a plastic film around a product to be packaged is presented in Specification U.S. Pat. No. 4,454,705, wherein a plastic film girdle of shrinkable plastic is placed on a supporting frame and t...

AI Technical Summary

Benefits of technology

[0006] The object of the present invention is to overcome the above-described drawbacks and achieve a new and faster method for applying a wrapping plastic film around an object A specific object of the invention is to achieve a method for creating collars or girdles around a product to be packaged. Collars or girdles can also be made from wrapping plastic film, and these have numerous advantages as compared to prior-art girdles formed from steel or hard plastic bands, because a girdle formed from wrapping plastic film is softer and more resilient. It requires no corner supports to be used in conjunction with it and yet it does not damage the edges of the product to be packaged. However, producing a girdle by means of a wrapping packaging apparatus is a slow and uneconomical method as each girdle has to be wrapped separately. FEATURES OF THE METHOD OF THE INVENTION

[0028] The continuous method is very fast and efficient because the wrapping packaging machine can be continuously in operation, producing wrapped tube, from the end of which a girdle of suitable width is cut off, which girdle then tightens around the product to be packaged that comes to the appropriate position while advancing on the track. DEVICE OF THE INVENTION

Problems solved by technology

However, producing a girdle by means of a wrapping packaging apparatus is a slow and uneconomical method as each girdle has to be wrapped separately.

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