EP0814044B1 - Method for the production of multi-page printed products consisting of folded sheets - Google Patents

Description

The invention is in the field of the production of printed products and relates to a method according to the preamble of the first claim. The process is used to produce multi-leaf, from folded Sheet of existing printed products. The invention further relates to a Intermediate or partial product of the mentioned method.

Print products that consist of a plurality of folded sheets will For example, in gravure printing by the printed paper web is cut lengthwise by bringing the cut partial webs one on top of the other are cut transversely by the partial webs which are guided one above the other become groups of sheets lying on top of each other and adding the groups are folded across by sheets. The resulting Groups of folded sheets (tabloids) are then usually used stapled in the fold line or with other methods connected and, if necessary, are finally trimmed on up to three edges.

For the production of extensive printing products of this type are usually as described above, sub-products made from a smaller Number of sheets exist. A majority of such sub-products will then by collecting before or after folding or by inserting or Gathered together after folding and then one finished product stapled or glued and trimmed if necessary. The Manufacture via partial products allowed compared to direct manufacture of larger products a higher printing performance and it facilitates the introduction of additional products (glued cards, sample bags etc.) and / or the application of additional prints (individualized information such as Addresses etc.) on the inside of the finished product.

The production via partial products also has the disadvantage that that more steps are necessary, especially steps involving groups of loosely lying on top of one another or groups of loosely folded into each other Sheets (partial products) must be manipulated. During these steps the sub-products must be managed very carefully or the sheets inside of groups have to be aligned again and again, especially then when the sheets are made of papers that are lightly stacked slip.

Furthermore, for gathering or insertion after folding at least some of the groups of loosely folded sheets opened exactly in the middle become. This is usually done by eccentric folding Sheet creates a pre-fold, which makes opening or opening much easier makes it possible, but removes it from the finished product by cutting must be, which means a considerably increased amount of waste.

In order to facilitate the manipulation and opening of the partial products mentioned, is proposed, for example, in publication DE-2910964, which Stabilize partial products consisting of loosely folded sheets and facilitate the central opening of the same by at least along one row of holes was punched in one of the edges of the sheets perpendicular to the fold or the edges are slit and deformed to make one albeit to bring about slight cohesion of the bow. One treated like this Edge area affects all sheets like the pre-fold and must be finished Product must be cut away because it is attached to one for aesthetic reasons finished product is hardly tolerable.

Another well-known means of stabilizing the sub-products that come from there are loosely lying sheets or loosely folded sheets electrostatic charging of the paper, such that the paper layers stick to each other. This brings together for the stabilization of the layers Advantages, but can in the following processing steps, for example, if the partial products have to be opened, cause difficulties.

The object of the invention is a method for the production of multi-leaf printed products consisting of folded sheets to show by what method the difficulties in manipulating of groups of loose sheets and when opening such folded groups be significantly reduced.

This object is achieved by the method as it is by the claims is defined.

The central idea of the method according to the invention is to or partial products in the form of unfolded groups of loose sheets modify, in that the two outermost arches of such Group can be replaced by a folded outer sheet, the folded edge of the outer sheet runs transversely to the fold line, along which the sheet group then folded, and using the inner bow of the group one edge on the inner fold area of the outer sheet.

The arch group as an intermediate or partial product in the inventive The process is no longer a group of loosely folded one another Arch but an outer arch with a first fold, in which a plurality of inner arches, with outer and inner arches separated by a second Fold are folded transversely to the first fold of the outer sheet. Such a product has the advantages of a stability and opening characteristics Double fold, but not its disadvantages with regard to folding corners and irregular Thickness and it is, as will be shown below, by simple Modification of the known manufacturing processes can be produced.

The intermediate or partial product with the double-folded outer sheet is processed in exactly the same way as the known groups loose, folded sheet, i.e. for example, there will be several Partial products collected or inserted into each other and then the Sheets stapled along the fold line or the partial products (with or without Connection of the arches) are brought together and then in the back area connected with each other. After connecting the bends of an intermediate product or a plurality of sub-products at least the Cut the area of the first fold of the outer sheet. The result resulting waste is compared to that generated by a pre-fold Waste, low, because this trimming only affects the outer arch.

If the inner arch, for example, trimmed on three edges should be like this also according to the state of the art from aesthetic Reasons is made many times, cutting away the folding area of the Outer arc is not an additional process step. Because of the increased Stability of the intermediate or partial product meaning the inner arch are shifted less against each other than in procedures according to the Prior art is the case for trimming the inner arch of the Edge section can be designed minimally, which further increases the waste reduced.

As already mentioned, the method according to the invention brings along with the increased Stability of the arch groups the simplified opening of these groups as an advantage with itself, that is, it is particularly suitable for production about partial products, the partial products being opened when they are put together (e.g. collecting or inserting after folding). The opening in the middle the intermediate or partial products described is problem-free and required also no high folding precision. This is in contrast to opening with the help a pre-fold, which is in the position of the fold (width of the pre-fold) lead to waste and even to production disruptions can.

Furthermore, the first folded edge of the outer sheet can be used as an alignment edge for the Inner arch are used and not only at the individual intermediate or partial products, but already in a strand phase (see figures 1 and 2). As long as or as soon as the intermediate or partial products such are oriented that at least one component against gravity This fold edge is directed, the inner sheets are along this edge be aligned.

Another advantage of the intermediate or partial product of the inventive The procedure against the known tabloid is its by the first The fold of the outer arch increases stability, which generally makes handling easier.

Figuren 1 und 2

zwei beispielhafte Varianten zur Herstellung von Zwischen- oder Teilprodukten mit einem gefalzten Aussenbogen und darin liegenden Innenbogen;

Figur 3

eine beispielhafte Variante zur Weiterverarbeitung einer Mehrzahl von Teilprodukten gemäss Figur 1 oder 2 zu einem vielblättrigen Druckprodukt, das aus einer Vielzahl von ineinander gefalteten Bogen besteht.

The method according to the invention will be explained in detail with reference to the following figures. Show:

Figures 1 and 2

two exemplary variants for the production of intermediate or partial products with a folded outer sheet and inner sheet therein;

Figure 3

an exemplary variant for the further processing of a plurality of partial products according to Figure 1 or 2 to a multi-leaf printed product, which consists of a plurality of folded sheets.

FIG. 1 shows an exemplary variant for the production of the intermediate or partial product by which the process according to the invention essentially differs from known processes for the production of the same products. It is assumed that there is a paper web 1 printed on both sides, on the width of which, for example, seven printing strands are printed in the manner known from gravure printing.

The entire web 1 is, for example, by means of a cutting register roller (schematic represented by five small scissors) cut lengthways in five inner bow panels 11.1 to 11.5 and an outer sheet 12, the Inner arch webs are all the same width and the outer arch web 12 wider is as the inner arch sheets 11.1 to 11.5, for example, as shown essentially twice as wide.

The webs are then turned over turning bars 13 such that they come to lie on top of each other, d. H. that the longitudinal edges 14 and 15 of the Inner arch sheets 11.1 to 11.5 lie one above the other and that one Longitudinal edge of the outer arch web (16) the corresponding, superimposed Overhanging the longitudinal edges 15 of the inner arch webs. If the outside arch path 12 is substantially twice as wide as that as shown Inner arch paths, the outer arch path is arranged in such a way that its one edge lies on the edges 14 of the inner sheet sheets and the other Inner arc edges 15 lie essentially centrally on the outer arc path. From section A-A you can clearly see how the sheets are stacked are positioned.

Then, for example, in a former (not shown) the Inner sheet edges 15 projecting part of the outer sheet 12 around the folded inner sheet sheets, such that, for example the two edges of the outer sheet 12 on the edges 14 of the inner sheet 11.1 to 11.5 is positioned and the inner arch paths between the two parts of the outer sheet 12 folded against each other.

In this arrangement, the webs 11.1 to 11.5 and 12 are cut transversely (Section line 20) after always two printed pages and the resulting ones Groups of those surrounded by a folded outer sheet (first fold 34) A plurality of unfolded inner sheets are then folded transversely in the middle (Fold line 21 between the two printed pages). The advantages of the invention Processes already act on the webs before cross cutting, by this through the. without elaborate guides or other aids The effect of the folded outer arch sheet does not slide against each other. In particular, however, they become effective when between the cross cutting and the folding of the not yet folded intermediate or partial products need to be folded, again thanks to the effect of the folded Outer sheet does not, or at least, does the sheet of an intermediate or partial product can be moved very little against each other.

The intermediate or Partial product 30 of the method according to the invention, which consists of a double folded outer sheet 31 and a plurality of single-folded inner sheets 32 exists and of its four edges one through the second fold (Transverse fold) 33 and an edge perpendicular to the second fold through the two parts of the first fold 34 is formed.

The intermediate or partial product 30 shown is, depending on the further processing result in a finished product with 28 printed pages or 28 pages in one make more extensive product.

FIG. 2 shows a further, exemplary variant for producing the intermediate or partial product of the method according to the invention. The variant differs from the variant according to FIG. 1 in the positioning of the inner arch webs 11.1 to 11.5 relative to the outer arch web 12 and in the folding process, in which the outer sheet 12 is folded around the inner sheet. The same reference numbers are used in FIG. 2 as in FIG. 1.

According to Figure 2, the turning bars 13 are arranged such that the inner arch tracks 11.1 to 11.5 alternately on the left in the figure Part of the outer arch track 12 (11.1, 11.3, 11.5) or on the right part of the Outer arch track 12 (11.2, 11.4) can be positioned. This can be seen from the cut A-A. Then, for example, the webs are placed in a former diverted with each other in such a way that all inner arch sheets 11.1 to 11.5 come to lie on top of each other and the outer sheet 12 around the inner sheet is folded (section B-B). The advantage of this variant over The variant according to Figure 1 is that the folding process is more symmetrical is and for this reason easily with a known folding funnel is feasible.

Also for the variant according to FIG. 2, it is not imperative that the outer arch web 12 is essentially twice as wide as the inner sheet sheets; it can also be the same width, for example, but will be, for example positioned so that its center line between those in the figure on the right and the inner arch tracks arranged on the left in the figure.

The intermediate or partial product produced according to the variant according to FIG. 2 30 differs from that according to the variant according to Figure 1 is made, only by the order of the inner sheet.

• dass die Aussenbogen-Bahn weniger als doppelt so breit ist wie die Innenbogen-Bahnen und dass sie derart relativ zu den Innenbogen-Bahnen positioniert und gefaltet wird, dass nur eine oder keine ihrer Kanten auf die Längskanten der Innenbogen-Bahnen zu liegen kommt (siehe Teilprodukt 30' in der Figur 2);
• dass die Innenbogen-Bahnen verschieden breit sind;
• dass die Innenbogen-Bahnen und gegebenenfalls auch die Aussenbogen-Bahn durch Zusammenführen der bedruckten Papierbahnen mehrerer Druckwerke mehrlagig, beispielsweise zweilagig sind;
• dass Aussenbogen-Bahn und Innenbogen-Bahnen von verschiedenen Papierbahnen hergestellt werden;
• dass die Aussenbogen erst nach dem Querschneiden der Stränge um die Innenbogen gefaltet werden;
• dass das noch nicht quer gefalzte Zwischen- oder Teilprodukt hergestellt wird durch Einstecken von ungefalzten Innenbogen in einen gefalzten Aussenbogen.

As already mentioned, FIGS. 1 and 2 merely represent exemplary variants for producing the intermediate or partial product 30. Further variants of the illustrated production method consist, for example, in:

• that the outer sheet is less than twice as wide as the inner sheet and that it is positioned and folded relative to the inner sheet such that only one or none of its edges come to lie on the longitudinal edges of the inner sheet (see Partial product 30 'in FIG. 2);
• that the inner arch sheets are of different widths;
• that the inner sheet webs and possibly also the outer sheet web are multi-layer, for example two layers, by merging the printed paper webs of several printing units;
• that the outer sheet and inner sheet are made from different paper sheets;
• that the outer sheets are only folded around the inner sheets after the strands have been cut;
• that the intermediate or partial product, which has not yet been folded transversely, is produced by inserting unfolded inner sheets into a folded outer sheet.

FIG. 3 shows an example of further processing of two partial products 30 and 30 ', both of which are produced, for example, by a manufacturing method described above. Both of the partial products consist of a double-folded outer sheet 31 or 31 'and a plurality of substantially equal-sized, single-folded inner sheets 32. The outer sheet 31 is essentially twice as wide as the inner sheets 32 (exactly: by the thickness of the inner sheets lying one on top of the other) wider than twice as wide) so that it forms the two middle sides and the foremost and the rearmost side in the partial product 30. The outer arch 31 'is less than twice as wide as the inner arch 32 and only partially covers the outer surfaces of the partial product 30'.

For further processing, the partial product 30 ′ is transformed into the partial product 30 inserted (from the outside-in method) or the partial product 30 on the Partial product 30 'collected (inside-out method), being in both If partial products have to be opened in the middle. This is what happens Collection or plug-in product 40, which differs from a corresponding such product manufactured by the first prior art Folded edges 34 and 34 'of the two outer sheets 31 and 31' differs. The Collection or insert product 40 is now, for example, by the cross fold 33/33 'stapled.

The finished printed product is created by trimming at least one Edge formed by the first folds 34 and 34 'of the outer bends 31 and 31' is formed. It is advantageous but not imperative that these fold edges 34 and 34 'of the outer sheets 31 and 31' of the partial products 30 and 30 'all open the same product edge are arranged as that for the product 40 in the Figure 3 is shown.

The outer arch 31 'results in two sides 51 and 51' in the finished product 50, that do not extend over the entire height of the back. Can in a magazine Such sites can be used to advantage for special advertising effects.

Claims (12)

1. Method for producing printed products (50) consisting of a plurality of sheets which are folded inside each other, characterized, in that an intermediate product or a product part (30) respectively is produced by positioning a plurality of not folded inner sheets (32) in an outer sheet (31) which is folded once in a first fold (34) and by folding the inner sheets and the outer sheet together in a second fold (33) perpendicular to the first fold (34) of the outer sheet (31), in that the inner and outer sheets (31, 32) of the intermediate product or product part (30) are connected to each other along the second fold (33) and that the first fold (34) of the outer sheet (31) is trimmed off.
2. Method according to claim 1, characterized, in that a plurality of product parts (30, 30') with a second fold (33, 33') are collected on each other, inserted into each other or collated before the outer and inner sheets (31, 32) are connected.
3. Method according to one of claims 1 or 2, characterized, in that the outer and inner sheets (31, 32) of an intermediate product (30) or of a plurality of product parts (30) are connected to each other by stitching.
4. Method according to one of claims 1 to 3, characterized, in that for producing the intermediate products or product parts (30) respectively a plurality of printed inner sheet webs (11.1 to 11.5) are guided over each other such that the longitudinal edges (15) of at least the one web sides are superimposed, that an outer sheet web (2) is guided such that it is positioned against the superimposed inner sheet webs (11.1 to 11.5) and that it protrudes beyond the superimposed edges (15) of the inner sheet webs (11.1 to 11.5), that the protruding part of the outer sheet web (12) is folded around the superimposed edges (15) of the inner sheet webs (11.1 to 11.5) and that the inner and outer sheet webs (11.1 to 11.5, 12) are then transversely cut together.
5. Method according to one of claims 1 to 3, characterized, in that for the production of the intermediate products or product parts (30) respectively a plurality of printed inner sheet webs (11.1 to 11.5) are guided such that they form two juxtaposed groups of superimposed inner sheet webs, that an outer sheet web (12) is guided such that it is positioned against the two groups of inner sheet webs (11.1 to 11.5) and covers a space between the two groups of inner sheet webs, that the outer sheet web is folded such that the two groups of inner sheet webs come to lie against each other and the outer sheet web (12) is folded around the inner sheet webs (11.1 to 11.5) and that the webs (11.1 to 11.5,12) are then transversely cut together.
6. Method according to one of claims 1 to 3, characterized, in that the superimposed webs (11.1 to 11.5 and 12) are first cut transversely and are then folded to form the first fold (34).
7. Method according to one of claims 4 to 6, characterized, in that the inner sheet webs (11.1 to 11.5) and/or the outer sheet web (12) consist of a plurality of layers.
8. Method according to one of claims 1 to 3, characterized, in that the intermediate products or product parts (30) are formed by inserting unfolded inner sheets (32) into an outer sheet (31) which is folded once and that the inserted product is then folded transversely to the fold of the outer sheet
9. Intermediate product or product part (30, 30') of the method according to one of claims 1 to 8 for producing multileaf printed products (50) consisting of a plurality of sheets folded inside each other, characterized, in that the intermediate product or product part consists of an outer sheet (31, 31') with a first fold (34, 34') and a plurality of not folded inner sheets (32) which substantially lie with one of their edges against the first fold (34, 34') of the outer sheet (31, 31') and that the intermediate product or product part comprises a second fold (33, 33') perpendicular to the first fold (34, 34'), by which the inner sheets (32) are folded in their middles.
10. Intermediate product or product part according to claim 9, characterized, in that the inner sheets (32) all have the same size and that the second fold (33, 33') runs along their middle.
11. Intermediate product or product part according to claim 10, characterized, in that the outer sheet (31) is substantially double as wide as the inner sheets (32) and that the first fold (34) and the second fold (33) run along its middle.
12. Intermediate product or product part according to claim 10, characterized, in that the outer sheet (31') is less than double as wide as the inner sheets (32) and that it is folded such that one or none of its folded parts has the width of the inner sheets (32).

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