Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1996-05-24
1998-02-10
Engel, James
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156446, 156448, 156578, 118243, B65H 8100
Patent
active
057164894
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a device for gluing the tail end of a reel or log of wound web material, of the type comprising: conveying means for moving the reel; unwinding means for unwinding the tail end of the web material; a dispenser of glue for applying a glue to the web material of the reel; and means for rewinding the reel after the glue has been applied. More particularly, the invention relates to a device of the above type in which the glue is applied to a portion Of material still wound on the reel and onto which the tail or outer end is then rewound.
Such devices are commonly used in the paper converting industry, wherein large paper coils (parent rolls) are unwound and rewound to form reels or logs of smaller diameters. The tail end of these reels is glued after rewinding and the reels are thereafter subject to further operations, such as cutting along planes perpendicular to the reel axis, in order to produce toilet paper rolls, all purpose wipers rolls, kitchen rolls or the like.
STATE OF THE ART
Various kinds of reel gluing devices exist, and, purely by way of illustration, those disclosed in, for example, U.S. Pat. No. 4,475,974, U.S. Pat. No. 4,963,223, EP-A-0 481 929 and U.S. Pat. No. 5,242,525 may be indicated. In all currently known gluing devices, and in particular in those disclosed in the patents cited above, the unwinding of the tail end of the web material before gluing takes place is achieved by holding the reel in an unwinding position and striking said reel with blasts of air emitted by nozzles in suitable positions and orientations. These blasts of air lift the tail end of the reel and open it onto a supporting surface. The reel is then made to rotate in order partly to rewind the tail end so that a predetermined and limited length of web material remains on the supporting surface. Once this has been done it is necessary to transfer the reel with the tail end in this position to the glue dispenser. In conventional gluing devices, disclosed for example in U.S. Pat. No. 4,963,223 or in U.S. Pat. No. 4,475,974, the reel is transferred by translationally moving a pair of rolls on which the reel is supported and, integrally with said rolls, the surface on which the tail end has been unwound. This is necessary because the glue is dispensed through nozzles directly onto the tail end which is then rewound onto the reel. In order to considerably simplify the gluing process, EP-B-0 481 929 discloses a novel gluing process, in which once the tail end has been unwound from the reel, the reel is rolled over a slit through which the glue is dispensed. This makes it possible to achieve major simplifications and to greatly reduce maintenance, if not eliminate it altogether.
The present invention relates to a tail sealer using the same method as disclosed in EP-B-0 481 929, with a modified glue dispenser.
DISCLOSURE OF THE INVENTION
Basically, the device according to the invention comprises a glue dispenser which includes a glue container with at least one upwardly oriented slit from which glue is dispensed, wherein inside said container a moving member is positioned, which is cyclically immersed in the glue and moved toward the upwardly oriented slit in order to apply the glue on the reel which rolls over said slit.
In a particularly advantageous embodiment, said container is upwardly closed by a rolling surface on which the reels to be glued are made to roll, said surface being provided with said at least one upwardly oriented slit.
According to an embodiment of the invention, the movable member is formed by a transversely extending, substantially rectilinear bar. Said movable member may be provided with an upwardly oriented concave surface, in which the glue is collected.
Further advantageous features of the invention are set forth in the appended claims.
The invention also relates to a method for gluing the outer end of a web material wound on a reel, wherein: the outer end of the web is unwound or detached from the reel by a predetermined extent; the glue is applied on
REFERENCES:
patent: 2755768 (1956-07-01), Olson
patent: 3393105 (1968-07-01), Tellier, Jr.
patent: 3415221 (1968-12-01), Stenger
patent: 4366018 (1982-12-01), Gross
patent: 4475974 (1984-10-01), Perini
Engel James
Fabio Perini S.p.A.
LandOfFree
Device for gluing the tail end of a reel of web material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for gluing the tail end of a reel of web material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for gluing the tail end of a reel of web material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2074167