Apparatus for conveying and folding flexible packaging material
AssigneeTetra Laval Holdings & Finance S.A.
InventorRoland Andersson
Life of this patent
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Abstract
The disclosure relates to an apparatus for conveying and folding flexible packaging material, comprising a conveyor (1) with a conveyor belt (3) which is provided with through-going holes and which, for a part of its length, extends substantially rectilinearly and with constant orientation along a suction box (9). By connecting the suction box (9) to a source of partial vacuum, a partial vacuum is created at the side of the belt facing towards the packaging material, which ensures that the packaging material is well-fixed and can thereby pass closely adjacent and be heated by a heating device (15) extending along the belt. The apparatus makes for concentrated, energy-efficient and well-defined heating of an edge region of the packaging material intended for thermosealing.
Claims10
An apparatus for conveying and folding flexible packaging material, comprising:
- a conveyor with conveyor devices which, along a section of the length of the conveyor, have gradually modified orientation for changing the orientation of the packaging material;
- a conveyor belt which, along a part of the length of the conveyor, extends substantially rectilinearly;
- a suction box disposed along the conveyor belt which, at its side facing towards the belt, has a recess communicable with a source of partial vacuum, the belt including through-going holes to transfer the partial vacuum from said recess to the opposite side of the belt in order to retain the packaging material conveyed thereon by means of the belt.
Dependencies are inferred from the claim text.