DE2034204A1 - Method of making tear-away block - Google Patents

Description

PATENT LAWYERS PATENTA-NWALT DIPL.-ING. R. MDLIER-BORNER PATENTANWALT DIPL.-ING. HANS-H. WEY ABOUT LI N-DAHLEM 33. PO D BlELS KIALLEE 68 8 M 0 N C H E N 22Wl D E N M AYE R STR AS S E 49 TEL. 0311. 762907 TELEGR. PROPINDUS TELEX 0184057 TEL 0811. 225585. TELEGR. PROPINDUS TELEX 0524244

23 470

Jean LAVIGNE

78-Le Mesnil Saint Denis

(France)

Method of making tear-off blocks

The invention relates to a method for producing Blocks with a fixed edge and stacked, tear-off sheets, according to the parent application consists in that the dimensions of the sheets used for manufacture are at least equal to those of the block and that the edge strip is formed by an edge part of these sheets, while the remaining part is the tearable part Sheet forms.

In particular, the invention relates to tear-off calendars and processes for their production

Describe the parent application and the first additional application

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a block with a fixed border and sheets that can be torn off, where between two consecutive sheets a thin layer of thermally activated adhesive is inserted. A part of the margin of these leaves forms a margin, while the remaining part of the sheets can be torn off · In the manufacturing process, the sheets become stacks layered, the areas of the edge strips are heated to temperatures that at least correspond to the activation temperature of the adhesive and the sheets are at this temperature compressed.

The object of the present additional application is to create a method with which blocks can be produced with a fixed edge strip and with tear-off sheets, this method differing from the method of the parent application and the first additional application in that the gluing is not done by means of an adhesive is achieved, but simply by the fact that the edge strip is printed on one side of the sheets with a printing ink that can be thermally activated with regard to its adhesiveness . ^! ■ - ■■■; .- · - · -: -

According to the invention it is proposed that the edge strip on one side of the sheets with one in terms of their adhesiveness thermally activated printing ink is printed in that the sheets so printed are stacked edge strip on edge strip be that the edge strips are heated to a temperature that is at least equal to the 'temperature that the printing ink is sticky that the stack of sheets at least in the area of the marginal ridges at this temperature

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203-204

is pressed that cooled to normal ambient temperature is and that the block so produced, if necessary the desired dimensions are cut to size.

The proposed method is particularly advantageous if if the tear-off sheets are provided with imprints, such as in the case of calendars. The ones for printing The thermally activated printing ink used in the edge strip can also be at least one of the colors at the same time on which the tear-off sheets are printed.

In addition, the tear-off sheets and the marginal strips simultaneously and continuously, for example in offset, which shortens the production time and reduces the work steps required and thus the price of the block produced in this way can also be reduced.

According to a particularly advantageous embodiment of the invention Method is proposed that all sheets of the block in a single operation on one a single sheet of paper can be printed, at least its surface corresponds to the sum of the surface area of the individual leaves and that the printed sheet is then on the format the individual leaves is cut to size. This bow is at least in the area of the edge strips of the sheets with the thermally activated with regard to their adhesiveness Printed inks. A smooth black surface can be imprinted by printing on top of one another of the four classic printing inks, with the Color either as a smooth filled area or as 25.50

109 8A1 / 016 0

BADORIGINATION,

can be applied aster to 75 $ hydrochloric ^K.

For certain applications it can be advantageous not to include the edge strip of the cover sheet of the block print * On the one hand, this allows the compilation of the block are obstructed, on the other hand, the space left free in this way can be better used to Inscriptions, ornaments, advertising or as required to attach something similar

In those cases where the tear-off sheets themselves have imprints should receive, the entire sheet corresponding to the individual sheets can be printed in one operation the printing ink, which can be thermally activated with regard to its adhesiveness, for printing on the edge strip is also at least one of the colors with which the tear-off sheet parts are printed. Advantageously takes place offset printing.

Then the printed sheet is cut to the format of the individual sheets. The sheets are stacked and heated in the area of the edge strips until they have reached a temperature which at least corresponds to the temperature at which the printing ink used is adhesive. This stack of sheets is then immediately pressed at this temperature, at least in the area of the edge strips. The pressing time is approx. 1 to 2 seconds at a pressure of approx. 2 to k kg / cm. After cooling to normal ambient temperature, a block with a solid edge is obtained in this way.

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During the pressing of the edge strip or after the Pressing a line of perforations can be made on the block, marking the edge strip and the tearable ones Separating leaves from each other. At the same time, holes can be made in the edge of the block, which allow the introduction of holding devices for hanging up the block »The procedures for this are in of the parent application and in the first additional application.

Printing inks known per se can be used as printing inks which can be thermally activated with regard to their adhesiveness based on cellophane, linseed oil, coumarone resins, rubber resins, synthetic sheets or hydrocarbons are used will. These printing inks can be colored directly with known pigments »

Optionally, the thermal conductivity of these printing inks can be advantageously improved by giving them Good heat conducting substances are added, for example metal powder or soot ».

This means that they are thermally adhesive in terms of their adhesiveness activatable printing inks at the same time also ensure good thermal conductivity the good heat distribution achieved in this way, the use of relatively low temperatures, a faster thermal one Gluing and simultaneous thermal gluing several blocks that can be stacked between the two heating plates of the same press. To this Way can in a single operation of

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15 to 20 blocks with a thickness of 6 sheets each are pressed for 2 minutes under a single press. the The number of blocks to be produced in one operation can be increased to 25 to 30, with cutting and spreading under the press takes about 1 minute to complete the bond.

For a better understanding of the invention, an exemplary embodiment of the invention is described below in conjunction with the drawings, which however in no way restricts the disclosure area of the invention. Show it*

1 shows a sheet printed according to the invention for the production of blocks according to the invention}

Fig. 2 shows an arc as in Fig. 1, but with a different one Division; and

3 shows an arch as in FIG. 1 with a third possibility the division,

1, 2 and 3 show a sheet 1, its surface is at least as large as the sum of the surfaces of the individual sheets 2 and 3 that form the block.

The sheet 1 is printed in the offset process with a strip or with the strips h and ^ ¹ , which correspond to the edge strips of the sheets 3. The edge strip of sheet 2, which is to form the cover sheet of the block, is not printed. For printing, an adhesive with regard to its adhesive

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ability to use thermally activated printing ink, which is a mixture and consists of 66 % of the paint available commercially under the name "Fast Gloss" and 33% of a black pigment with good thermal conductivity that is commercially available from the DAMBRENE company under the name " Superconcentre "is available.

Simultaneously with the printing of the edge strip can also the tear-off part of sheets 2 and 3 can be printed.

In Fig. 1 the months of the year are shown on the sheet, which can also be provided with drawings or other graphic reproductions. The pressure can can also be done in multiple colors, for example with three primary colors and black. For the colors blue, yellow and red can

to
a mixture of equal parts of the pigments "Europa 100" from FRANCE COULEURS and the varnish "Fast Gloss" from DAMBRENE can be used. For the color black, the printing ink described in connection with the printing of the edge strip can be used.

After printing, the sheet 1 is tailored to the format of each Leaves trimmed, like that in the figures by the is indicated by broken lines. Then be the sheets / stacked, with the sheet labeled 2 as top sheet is placed. The stack is heated to approx. 80 to 100 C and under pressure for approx. 1 to 2 seconds pressed from 2 to A kg / cm.

This can be done extremely easily and economically Blocks with a rigid edging and tear-off sheets can be produced. If necessary, can then

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a text on the edge of the block, for example an advertising text.

The exemplary embodiment described in the above is only intended to explain the invention and in no way restrict it. Numerous other embodiments of the invention are readily apparent from the disclosure
Realize professionals.

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Claims (1)

Claims Method of making blocks with a fixed Edge strip and superimposed, tear-off sheets, which, according to the parent application, consists in that the dimensions of the sheets used for the production are at least equal to those of the block and that the marginal ridge formed by a marginal part of these sheets is, while the remaining part forms the tear-off sheet, characterized in that the edge strip on one side of the sheets with a printing ink that can be thermally activated with regard to its adhesiveness is printed so that the printed sheets are stacked edge strip on edge strip that the edge strips heated to a temperature at least equal to the temperature at which the printing ink becomes adhesive that the stack of sheets is pressed at least in the region of the edge strips at this temperature that is cooled to normal ambient temperature and that the block thus produced, if necessary, to the desired Dimensions is cut to size. 2, method according to claim 1, characterized in that at least one side of the tearable before stacking Sheet part is printed and that at the same time the edge strip is printed with at least one of the printing inks with which the tear-off sheet is also printed. 3 · Method according to one of claims 1 or 2, characterized marked that all sheets of the block in one 109841/0160 be printed in a single operation on a single sheet, the surface of which corresponds at least to the sum of the surfaces of the individual sheets and that the
The printed sheet is then cut to the size of the individual sheets. ' 4. The method according to any one of claims 1 to 3, characterized in that that the edge of the cover sheet is not printed. 5. The method according to any one of claims 1 to 4, characterized in that that at least a printing ink is used for printing on the edge strip, which is a good heat conductor Contains substance. 6. The method according to claim 5 »characterized in that the highly thermally conductive substance is metallic and / or contains carbon. 7. Block, characterized in that it is after one of the
Claims 1 to 6 was made. 3. Application of the method according to any one of claims 1 to 6 for the production of tear-off calendars. 9. Printed sheet for the production of a block according to claim 7 Dr Jae / Ba 109 8 k 1/0160