Device for providing sheet-format substrate sections and processing web-format substrate

Patent metadata

Field	Value
Publication number	US-12151464-B2
Application number	US-202218702940-A
Country	US
Kind code	B2
Filing date	Aug 26, 2022
Priority date	Dec 7, 2021
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

Examples include a device for providing sheet-format substrate sections from a web-format substrate. The device includes a roll unwinder for inlet-side feeding of the web-format substrate. Two application devices act on the same first side of the web substrate, and are formed by coating units for supplying, to the same first side of the web substrate, a varnish that forms a barrier layer. A drying device is provided between a cross-cutting device and an upstream first coating unit and/or the drying device is provided in the substrate path between the two coating units and the cross-cutting device. The web-format substrate can be cut into sheet-format substrate sections and, at the outlet, the substrate sections can be provided for subsequent processing or output to a delivery unit.

First claim

The invention claimed is:

1. A device for providing sheet-format substrate sections (S′), comprising a roll unwinder ( 01 ) for inlet-side feeding of a web-format substrate(S) (S); at least one application device ( 02 ) for applying a fluid to a first side of the web-format substrate(S); a drying device ( 03 ; 03 ′; 03 ″) for accelerating a drying and/or curing process, downstream from the at least one application device ( 02 ; 02 ′); and a cross-cutting device ( 04 ), by which the web-format substrate(S) can be cut into sheet-format substrate sections (S′) and at an outlet of which these substrate sections (S′) can be provided for subsequent processing or output to a delivery unit, wherein, for formation of a barrier layer in a manner of a coating that prevents adjacent gaseous, liquid, or pasty media from entering or penetrating the substrate material, two application devices ( 02 ; 02 ′) acting on a same first side and formed by varnishing units ( 02 ; 02 ′) that apply, to the same first side of the web-format substrate (S), varnish for forming the barrier layer as the coating that prevents adjacent gaseous, liquid, or pasty media from entering or penetrating the substrate material, wherein the varnishing units ( 02 ; 02 ′) are provided in the substrate path of the web-format substrate(S) between the roll unwinder ( 01 ) and the cross-cutting device ( 04 ), and a drying device ( 03 ; 03 ′; 03 ″) is provided between the cross-cutting device ( 04 ) and the, viewed upstream, first-coating varnishing unit ( 02 ; 02 ′), and a drying device ( 03 ; 03 ′; 03 ″) is provided in the substrate path between the two varnishing units ( 02 ; 02 ′).

2. The device according to claim 1 , characterized in that only the varnishing units ( 02 ; 02 ′) acting on the first side are provided as application devices ( 02 ; 02 ′) in the substrate path between the roll unwinder ( 01 ) and the cross-cutting device ( 04 ).

3. The device according to claim 1 , characterized in that the varnishing units ( 02 ; 02 ′) are formed by flexographic varnishing units ( 02 ; 02 ′).

4. The device according to claim 1 , characterized in that the varnishing units ( 02 ; 02 ′) acting on the first side of the substrate(S) are each equipped to apply varnish to the substrate(S) on at least a surface forming multiple-ups over a full surface or a large surface area in one operation, that is, in such a way that an application is carried out at least on an entire or at least 80% of the surface of the substrate(S) which is taken up by the multiple-up or multiple-ups provided on the substrate sections (S′), and/or that the application devices ( 02 ; 02 ′) acting upon the first side of the substrate(S) are formed by varnishing units ( 02 ; 02 ′), a varnishing forme of which is provided on a respective forme cylinder ( 24 ), on a printing width and printing length corresponding to the multiple-up or multiple-ups, has a print motif for full-surface printing, based on a surface area of the multiple-up or multiple-ups, or a print motif having a print-free surface area of less than 20%, based on the surface area of the multiple-up or multiple-ups.

5. The device according to claim 1 , characterized in that the varnishing units ( 02 ; 02 ′) are arranged in the substrate path in such a way, and the substrate path configuration between the varnishing units ( 02 ; 02 ′) and the downstream last varnishing unit ( 02 ; 02 ′) to the cross-cutting device ( 04 ) are designed in such a way, that the substrate (S; S′) acted upon by the varnishing units ( 02 ; 02 ′) on the first side leaves the cross-cutting device ( 04 ) with the first side pointing downwardly.

6. The device according to claim 5 , characterized in that the varnishing units ( 02 ; 02 ′) acting upon the first side of the substrate(S) are arranged in the substrate path in such a way that the respective varnishing unit ( 02 ; 02 ′), at the site of the application, is situated beneath the substrate path or on the side of the substrate path which faces away from the device for the inlet-side feeding ( 01 ) and/or that the varnishing units ( 02 ; 02 ′) apply the varnish to the underside of the substrate(S) guided on the substrate path, that is, to the first side of the two substrate sides which points downwardly.

7. The device according to claim 5 , characterized in that the varnishing units ( 02 ; 02 ′) acting upon the first side of the substrate(S) are arranged in the substrate path in such a way that the respective varnishing unit ( 02 ; 02 ′), at the site of the application, is situated above the substrate path or at the substrate path on a side of the substrate path which faces the device for the inlet-side feeding ( 01 ) and/or that the varnishing units ( 02 ; 02 ′) print an upper side of the substrate(S) guided on the substrate path, that is, the side of the two substrate sides which points upwardly, and/or that a strand turning device ( 26 ) for reversing the web-format substrate (S) is provided in the substrate path between the downstream last varnishing unit ( 02 ; 02 ′) and the cross-cutting device ( 04 ), by which the side of the web-format substrate (S) entering on the inlet-side as the upper side is turned downwardly and, vice versa, the previously lower side is turned upwardly.

8. A machine for treating and/or processing web-format substrate(S), comprising a first machine part which comprises a roll unwinder ( 01 ) for inlet-side feeding of the web-format substrate(S), at least one application device ( 02 ) for applying a fluid to a first side of the web-format substrate(S) and a cross-cutting device ( 04 ) for cutting the web-format substrate(S) into sheet-format substrate sections (S′), and comprising a second machine part, which immediately follows the first machine part and includes a substrate path leading the substrate sections (S′) through the second machine part, at which the substrate sections (S′) emerging from the cross-cutting device ( 04 ) are transferred inline and which, on an outlet side, leads into a delivery device ( 06 ) in which substrate sections (S′) treated and/or processed in the machine can be received; the machine, in the substrate path of the first machine part between the cross-cutting device ( 04 ) and, viewed upstream, the only or first application device ( 02 ; 02 ′), comprising a drying device ( 03 ; 03 ′; 03 ″) for accelerating the drying and/or curing process; in the first machine part, for formation of a barrier layer in a manner of a coating that prevents adjacent gaseous, liquid, or pasty media from entering or penetrating the substrate material, two application devices ( 02 ; 02 ′) acting on the same first side and formed by varnishing units ( 02 ; 02 ′) that apply, to the same first side of the web-format substrate (S), varnish for forming the barrier layer as the coating that prevents adjacent gaseous, liquid, or pasty media from entering or penetrating the substrate material, the varnishing units ( 02 ; 02 ′) being provided in the substrate path of the web-format substrate (S′) between the roll unwinder ( 01 ) and the cross-cutting device ( 04 ), and a drying device ( 03 ; 03 ′; 03 ″) being provided between the cross-cutting device ( 04 ) and the, viewed upstream, first varnishing unit ( 02 ; 02 ′) and a drying device ( 03 ; 03 ′; 03 ″) being provided in the substrate path between the two varnishing units ( 02 ; 02 ′); and, in the substrate path between the cross-cutting device ( 04 ) and the delivery device ( 06 ), one or a plurality of sheet printing mechanisms ( 08 ; 09 ) being provided, by which a print image can be printed on the substrate sections (S′) on a second side thereof, located opposite the first side.

9. The machine according to claim 8 , characterized in that the varni

Assignees

• Koenig & Bauer Ag

Inventors

• Schwitzky Volkmar
• Ziegenbalg Christian

Classifications

• B41M7/009

  using thermal means, e.g. infrared radiation, heat · CPC title

• B41M1/04

  Flexographic printing · CPC title

• B41F23/0403

  Drying webs (B41F23/0486 takes precedence) · CPC title

• B41F13/60

  crosswise · CPC title

• B41F13/02

  Conveying or guiding webs through presses or machines · CPC title