Paper web for a web fed rotary printing press

Details Paper web for a web fed rotary printing press Paper web for a web fed rotary printing press

1999-12-06

2001-09-18

Peterson, Kenneth E. (Department: 3724)

Cutting

Processes

Puncturing

C083S304000, C083S342000, C083S678000

Reexamination Certificate

active

06289777

ABSTRACT:

FIELD OF THE INVENTION
The present invention is directed to a method for processing a paper web, and a paper web processed in accordance with the method. The paper web is provided with a transverse tear line along which the tear resistance of the web is reduced, as the web travels through the press.
DESCRIPTION OF THE PRIOR ART
A perforating unit with pins, and cooperating holes, arranged on rollers is known from DE-PS 10 19 321. These pins, or holes, are each located on, or in, the casing of a roller, wherein each roller has an appropriate casing.
WO 87/04658 shows a device for transversely perforating a paper web. Here, a perforation cutter is arranged helically on a perforation cylinder.
FR 2460776 discloses a device for perforating, wherein the arrangement of the perforating needles can be changed.
EP 0723862 A1 describes a web of material which, on its way through a web-fed rotary printing press and after leaving the roll changer, is cut along a line extending in a direction transverse to the paper web movement direction, and is brought to another web guide.
SUMMARY OF THE INVENTION
The object of the present invention is directed to providing creating a paper web which, while moving on its way from the roll changer through the web-fed rotary printing press, can be transversely cut at a preselectable point without a cutter device.
In accordance with the present invention, this object is attained by the provision of a line of perforations in the paper web. These perforations are formed in a direction transverse to the paper web movement direction. The perforations form a tear line along which the tear resistance of the paper web is reduced. A forming roller with perforation plungers is used to form the perforations. The perforation plungers are arranged axially on the roller in groups.
The advantages to be obtained by the present invention lie, in particular, in that, for example, a paper web moving at the draw-in speed quickly receives a transverse perforation in the form of a transverse tear line of reduced tear resistance, whose location can be predetermined. It is made possible in this way, for example, to transversely separate an already longitudinally cut half- or quarter-width paper web at the predetermined breaking point, and to convey a new draw-in tip, produced in this way, for example over turning bars, by means of a draw-in device, to another longitudinal folding hopper unit or to a mixing deck of a web-fed rotary printing press. It becomes possible, in this way, for example in connection with a flying plate change, to change the number of pages of a newspaper in the shortest possible time.


REFERENCES:
patent: 707540 (1902-08-01), Baruch
patent: 1499676 (1924-07-01), Marquette
patent: 1665834 (1928-04-01), Ayer
patent: 1693589 (1928-12-01), Bolton
patent: 2316054 (1943-04-01), Davis et al.
patent: 2761513 (1956-09-01), Stram
patent: 3059842 (1962-10-01), Wadey
patent: 3554070 (1971-01-01), Boyd
patent: 3570337 (1971-03-01), Morgan
patent: 4552316 (1985-11-01), Dropczynski et al.
patent: 4596546 (1986-06-01), Schellenberg
patent: 4775110 (1988-10-01), Welp et al.
patent: 4805501 (1989-02-01), Nuttin
patent: 5881622 (1999-03-01), Kaipf
patent: 270911 (1912-10-01), None
patent: 1019321 (1954-09-01), None
patent: 3140511 A1 (1981-10-01), None
patent: 3611895 A1 (1986-04-01), None
patent: 0054907 A2 (1982-06-01), None
patent: 0723862 A1 (1996-01-01), None
patent: 0744367 A2 (1996-05-01), None
patent: 2460776 (1979-07-01), None
patent: WO 87/04658 (1987-02-01), None

Affiliated with

Also associated with

Rating

Paper web for a web fed rotary printing press does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Paper web for a web fed rotary printing press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Paper web for a web fed rotary printing press will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2543113