Abstract:
The rewinding machine comprises: winding elements (1, 3, 5) to wind the web material (N) and form the logs (L1, L2); at least a first glue dispenser (31B) to apply a first glue (C2) to a portion of said web material, in proximity to a severing line, along which the web material is severed upon termination of winding a log. The first glue dispenser comprises a mechanical element (31B) that touches the web material (N) upon termination of winding each log (L1, L2), to transfer the first glue to the web material (N).
Abstract:
A winder for winding a web to produce a rolled product is provided. The winder includes a web transport apparatus that is used for conveying the web. Also included in one exemplary embodiment is a plurality of independent winding modules. The winding modules are independently positioned to independently engage the web as the web is conveyed by the web transport apparatus. The winding modules may be configured to wind the web to form a rolled product by center winding, surface winding, and combinations of center and surface winding. The winding modules are structurally and operationally independent of one another where if one module is disabled, another may still operate to produce the rolled product without shutting down the winder.
Abstract:
An apparatus and method for sealing the tail (T) of a rolled product (L) against the rolled product. After being positioned in a location upon a roller (36), the rolled product is rotated between the roller and a conveyor assembly (6) until a jet (44) blows the unsealed tail against the roller. By further rotating the roller, a sensor detects the location of the tail end for determining tail length in later operations. The roller is reversed to pass the tail around the roller and preferably to a tail support (40) adjacent the roller. When the tail reaches a desired position along the tail support, an applicator sensor (52) sends a signal to an adhesive assembly (42) which applies adhesive to the tail and/or the rolled product. After the adhesive has been applied, the roller is again reversed to roll the tail back upon the rolled product. The rewound rolled product is then preferably rolled over at least one ironing roller (172).
Abstract:
A tail gap winder transfers a web (12) from a first core to a second core by, immediately after the web is cut, pivoting the idler roller (22) to lengthen the distance between the idler roller and the rotating drum (24) to create a gap between the cut ends of the web; removing the first core (14) from the rotating drum surface (26) as the gap passes under the first core (14) location; moving the second core into contact with the rotating drum surface; and winding the incoming cut edge around the second core. The idler roller pivots toward the rotating drum to decrease the distance between the idler roller and rotating drum and to take up the extra length of web during the winding portion of the operating cycle.
Abstract:
A method of surface winding of a web material (N) to form a roll (L) is described, in which, at the end of the winding of the said roll (L), the web material is severed to form a free tail edge (LL) and a free leading edge for the start of a subsequent roll. The completed roll is discharged directly from the winding area (83, 85, 87) onto gluing means which apply an adhesive to the wound material. The free tail edge (LL) is rewound and covers the applied adhesive while the roll is discharged.
Abstract:
The severed end of a continuous, traveling web (11), such as paper, being wound into a wound web roll (12) is attached to the web roll, without requiring human touch, by a pair of adhesive applicators (23, 24) which are mounted on guides (19, 29) to travel longitudinally parallel with the axis of the roll being wound. The applicators may apply either a stripe of glue (21, 22) or an adhesive tape to the circumference of the wound paper roll during the last revolution of the wound web roll, preferably at two locations intermediate the end arm supports (13, 14) of the wound web roll. The applicators are moved radially inwardly to a working position and outwardly to a stand-by position relative to the axis of the rotation of the wound web roll so as to be retracted in the stand-by position when the last wrap of the web on the roll is made to attach the severed end of the web onto the finished wound web roll.
Abstract:
A web winding system (10) for winding adhesive backed web (12) on cores (14) mounted on wind-up spindles (28, 30). The web (12) is supported on a rotating suction drum (24). A knife (32) mounted on a rotating wheel (34) cuts the web (12) against the supporting drum (24). A tab bar (68) is mounted on the wheel (34) adjacent to the knife (32), and applies a tab (60) to the web (12) in registration with the cut. In a second position of the wheel (34) a tab source (70) moves toward the tab bar (68) and applies a tab (60) to its surface (68). The knife (32) is heated by a heater (35) to a temperature above adhesive softening and below adhesive carbonizing to prevent adhesive to stick to or to accumulate on the knife (32). The web (12) is lead to the supporting drum (24) around a stationary gapping roller (18) and a retractable gapping roller (22), mounted on an arm (42) which is pivotable around roller (10). When the knife (32) has cut the web (12) the arm (42) pivots clockwise, and lengthens the distance between retractable roller (22) and supporting drum (24), thus forcing the web to slide on the drum (24), and to form a gap between the leading cut end (36') and the trailing cut end (36) of the web. The gap allows for flying transfer of the web between the cores (14) on the two wind-up spindles (28, 30).
Abstract:
A splicer tape (20) for holding the leading end portion (4) of the outer layer of a new roll (5) and for enabling the leading end portion (4) to be spliced to the trailing end portion (8) of an active web contains an elongated strip of carrier material (1) having a first non-releasable adhesive (3) on the inner side which is to be applied against the leading end portion (4), a second releasable adhesive (6) applied onto a second section of the inner side which is to be applied against the body of the new roll (5) to hold the leading edge (4) down until the leading edge (4) is spliced to the trailing end portion (8) of an active web whereupon the second adhesive (6) releases from the body of the new roll (5) without leaving any portion of the tape (20), a third non-releasable adhesive (9a) is applied on the outer side of the carrier material (1) which is to be applied against the trailing end portion (8) from the active web during splicing.