DE202009008797U1 - Cross-Punktbeleimung - Google Patents

Abstract

Device for gluing paper webs in rotary printing machines (glue station), characterized in that it consists of at least two application valves that can apply adhesive dots on a paper web to glue them to another paper web.

Description

Technical field of the invention:

• Adhesive application in rotary printing, in particular across the Running direction of the paper web.

State of the art:

For the transverse gluing in rotary printing machines so far only the cross gluing plants of the market leader Planatol can be used. http://planatol.de/de/druck/fr_ka_querleimung.htm

Problem of available cross-sizing / task the invention:

Of the Distance from one bond on the paper web to the next is not variable with the available cross gluing units. For printing machines with variable page size (especially in gravure printing) these cross-gluing units are unsuitable.

Further Disadvantages are the very high investment costs and the high set-up, Maintenance and operating costs. Due to the large dimensions The available Querleimwerke is in the printing press between the first break (funnel longitudinal fold) and the second break (Cross fold) a special machine section for separating the paper webs required. The object of the invention is to provide a more variable, more varied, less expensive, less expensive and more compact Solution to deliver.

Troubleshooting:

The transverse to the direction of the paper web to be applied glue track in this invention in the form of individual points lying on a straight line applied - similar to the already available Querleimwerke, but the number and distance of the glue points (at Glue strokes and the length) are freely selectable. These glue dots are separated by single fast switching Application valves applied. This is a very short-term tax the adhesive of particular importance because at web speeds from around 800 m / min the points are not dragged out be allowed to. Equally important is the right time the dispensing of adhesive and the ability to synchronize the order valves, so that all adhesive dots lie exactly in the back of the product. These requirements can be met with the previously in rotary printing used electromagnetically actuated order valves not be fulfilled. The subject of this invention is therefore the Use of piezoelectric application valves for the Application of adhesive in rotary printing machines.

Advantages achieved by this invention and industrial applicability:

By the use of electronically controlled order valves a format-variable cross-sizing (eg for gravure printing) at all only possible. Also in web offset printing (newspaper printing and lying formats in Heatsetdruck) result from the clear lower investment costs and significantly lower set-up, Maintenance and operating costs compared to significant advantages the previously known Querleimwerken. In addition, revealed almost unlimited possibilities for two-dimensional Glue pictures for special applications (also in combination with longitudinal and transverse perforations). So z. B. two pages fully or be adhered to one another or to a bag or glued to an envelope with each other.

By the compact dimensions may be similar to the invention conventional longitudinal sizing systems with low Expenditure in the former or in strand convergence are installed. This results in a significant cost reduction in construction the printing press.

1

to gluing paper web

2

transverse fold line

3

Leimauftragsventile

4

glue spots

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited non-patent literature

• - http://planatol.de/de/druck/fr_ka_querleimung.htm [0001]

Claims (7)

Device for gluing paper webs in rotary printing machines (glue station), characterized in that it consists of at least two application valves that can apply adhesive dots on a paper web to glue them to another paper web. Gluing station according to claim 1, characterized that two or more glue spots can be applied, all of which can be on the straight line, those in the following Production process to cross fold, so that through the sum of the individual points a cross-sizing can be achieved (Falzlemining in the back transverse to the production direction). Gluing station according to claim 1, characterized that the order valves preferably individually or in groups can be electrically controlled. Gluing station according to claim 1, characterized that all order valves are synchronized with each other can. Gluing station according to claim 1, characterized in that the application valves are actuated piezoelectrically become. Gluing station according to claim 1, characterized that the largest diameter of the glue spots even at high production speeds is so small that the Falkleimung not significantly beyond the range of product back protrudes. Gluing station according to claim 1, characterized that the order valves the glue also outside the cross-fold line freely adjustable over the entire surface can apply the paper web to be glued and thus variable two-dimensional glue patterns are possible.