Device for applying tapes (tear-tapes) or the like to a web of material
AssigneeFocke & Co. (GmbH & Co.)
InventorsHeinz H. Focke, Hans-Jurgen Bretthauer
Life of this patent
Estimating the term…
Abstract
A method and apparatus for applying tear tapes or the like to a transported web of cellulose wrapping material. A first portion of the travelling web is momentarily halted during the application of the tear tape, which takes place by a heat welding method. During the period of time while the first portion of the web is stationary, the remaining portions of the web continue to be transported at a constant speed, due to the effect of a pair of pivotally mounted diverting rollers which form web reserves on either side of the stationary first portion.
Claims8
A device for applying tear tapes or the like to a wrapping material web, including conveying devices both for a tape web and for the wrapping material web and including a cutting device, comprising a fixed cutter and a movable cutter for severing the tear tapes traversely from the tape web, the movable cutter being provided with vacuum operated retaining means for holding, transporting and transfering the cut-off tape to the wrapping material web, said device further including direction-change devices for said wrapping material web including diverting rollers (17,18), located upstream and downstream of a transfer portion (12) of said wrapping material web, said wrapping material web passing around portions of said rollers, the rollers being attached to pivotally mounted rockers, said rockers being synchronously reciprocatingly driven at a speed and in a direction to by themselves stop movement of said web in at least said transfer portion (12) thereof at an instant of transfer of the cut-off tapes (11) to said wrapping material web, while portions of said wrapping material web located upstream and downstream of said transfer portion continue to be transported.
Dependencies are inferred from the claim text.