Method and apparatus for producing wrapped bales

Abstract

An apparatus for producing wrapped bales comprises first and second wrapping material dispenser means for dispensing wrapping material on the bales. It also comprises a wrapping means for circulating the first and second wrapping material dispenser means in a first plane of rotation around said bale for wrapping said web of wrapping material around said bale. The apparatus is further configured to emerge the first wrapping material from the first wrapping material dispenser means and the second wrapping material from the second wrapping material dispenser means around the bale at least in two different areas so that the properties of the final wrapping of at least one of said first and / or second wrapping material provided onto the bale differs substantially at least in the second area from the properties of the final wrapping of at least one of said first and / or second wrapping material in said first area in order to make the bale wrapping stronger in said second area.”

Description

TECHNICAL FIELD OF THE INVENTION[0001]The invention relates to a method and apparatus for producing wrapped bales. Especially the invention relates to a method and apparatus for wrapping the bales with a web-like wrapping material.BACKGROUND OF THE INVENTION[0002]Different methods are known from prior art for wrapping an article with a web-like wrapping material. For example WO / 1994 / 022717 presents a solution where an article is in one stage moved past wrapping means while the wrapping means provided with a dispenser means are rotated around the article along a circular path in a first plane of rotation. In a further stage of wrapping the article is rotated by rotating means in a second plane of rotation substantially normal to said first plane of rotation. Between the stages the surface of the wrapping material web is turned about 90° such that the surface of the web is always substantially normal to said planes of rotation in both stages.[0003]There are however some disadvantages ...

AI Technical Summary

Benefits of technology

This invention relates to a method and apparatus for wrapping bales. The technical effects of the invention include providing a stronger supporting area to the bale without the need of additional wires around it, consuming less wrapping material, and producing more robust and secure wrappings. The invention also allows for easier and effective attachment of the wrapping material to the bale surface and results in stronger areas of the bale. Additionally, the invention enables lamination onto the bale surface with different wrapping materials providing both elastic and rigid mechanical support structures.

Problems solved by technology

There are however some disadvantages relating to the known prior art, such as using special wires to mechanically bound the wrapped articles e.g. in particular points, often at the location of supporting battens.

Typically these wires are made of metal, which causes problems when the article is opened in a final disposing plant, like in a power plant where the contents of the wrapped article is burned.

In addition one disadvantage in the known prior art is a consumption of the web-like wrapping material and additionally production of certain stronger areas onto the article to be wrapped.

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