Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1997-01-21
1999-05-11
Simmons, David A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
156502, 156504, 156157, 242553, 2425542, 2425553, 242556, 242580, 242583, B32B31/00
Patent
active
059024488
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a method and a device for preparing the start of a paper web feed roll for a flying roll change.
DESCRIPTION OF THE PRIOR ART
U.S. Pat. No. 4,802,632 describes a method for producing the start of a paper web feed roll placed on a shaft and for preparing this start for a flying roll change.
Two displaceable transverse cutting devices are provided for executing this method. A first transverse cutting device creates a free end of the paper web roll wherein several layers at the outside of the paper feed roll are cut through. The free end of the paper feed roll created in this manner is supplied to a holding device and is temporarily held therein. In this state, a short cut and a cutout are made in the free end by means of a second transverse cutting device.
A single tab is set by means of a device for applying tabs, which through the cutout connects the start of the paper feed roll with the paper layer underneath it. Finally, a trapezoidal start is cut out of the free end of the paper feed roll by means of a third transverse cutting device. After applying a double-sided adhesive tape of a liquid adhesive along the start of the paper feed roll, the preparation of the start of the paper feed roll is completed.
EP-A-0 181 280 discloses a work carriage, on which a transverse cutting device and an adhesive tape application device are arranged.
A device for preparing the start of a paper web feed roll, by means of which a top layer of the paper web feed roll is cut open in a axis-parallel direction by a cutter and the paper web start is cut in the shape of a letter V on a table by means of cutting tools operating in the longitudinal and transverse directions is known from U.S. Pat. No. 4,685,392. In the course of preparing the paper web start in a triangular shape by means of the cutting tools, adhesive paster tabs which have adhesive on both sides are simultaneously applied. An adhesive tab for fixing the paper web start on the second layer of the paper web feed roll is applied to the center of the V-shaped paper web tip by means of an adhesive tab application device separately disposed underneath the table.
It is a limitation of this prior art device that several devices which operate independently of each other are required for preparing a start of a paper web roll for a flying roll change.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide a compact, versatile device for preparing the start of a paper web feed roll, as well as a corresponding method.
This object is attained in accordance with the invention by preparing the start of a paper web feed roll for use in a flying web change by using a displaceable transverse cutting device. This cutting device creates a free end of the cutting web. Adhesive tabs are then applied to the free end to adhere this start to the second layer on the paper web feed roll. A free end of the web, which is hanging down from the feed roll, is inserted into a holding device and is held in such a way that the free end at least covers a cutting groove situated in a counter cutting strip. A transverse cutting device cuts the paper web along the cutting groove. Subsequently, spaced apart, one sided glued adhesive tabs are applied in a direction parallel to the axis of rotation of the paper web feed roll. These tabs are applied by a displaceable adhesive tab dispensing device in such a way that a second part of each tab projects past the cut edge of the paper web start. Then a double sided adhesive tape is applied by its own dispensing device in the vicinity of and parallel with the paper web cut edge. After this has been accomplished, the start of the paper web is rolled back on the paper web feed device and finally the second parts of the adhesive tabs are pressed onto the second layer of the paper web feed roll and adhere to it.
The advantages of the invention in particular consist in that transverse cutting as well as the application of adhesive tabs with adhesive on both sides is preferably performed i
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Paper, Film & Foil; "Continuous Splicing Techniques"; D. Smith; Nov. 1987.
Gray Linda L
Koenig & Bauer--Albert Aktiengesellschaft
Simmons David A.
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