MXPA99004263A - A cover intended for the fabrication of a booklet, a method of handling such covers, and a method of fabricating such booklets - Google Patents

Abstract

According to one aspect, the invention relates to a method of stacking covers for the fabrication of booklets. Each cover includes two cover sheets and an interconnecting spine. Applied to the inner surface of the spine is a binding device that includes a binding agent. The covers are mutually stacked with the inner surface of the spine of one cover lying against the outer surface of the spine of an adjacent cover. According to the invention, a deactivatable separating device is provided between the binding agent and the outer surface of the spine of an adjacent cover, so as to prevent adhesion between the spines of respective covers. According to another aspect of the invention, a cover of this kind is provided with a binding device that includes a binding agent (104) and a separating device (105) disposed on the surface of the binding agent that lies remote from the spine (103), this separating device preferably having a form of woven material affixed to the binding agent (104). The invention also comprises a method of producing a booklet with the use of the inventive cover. According to the inventive method of fabrication, the separating device is deactivated at the same time as the binding agent is activated and a sheet bundle is moved in towards the spine of the cover.

Description

> UKA PASTE INTENDED FOR THE MANUFACTURE OF FOLLEMOS, A METHOD FOR HANDLING PASTAS _, AND A METHOD FOR MANUFACTURING PAMPHLETS FIELD OF THE INVENTION According to a first aspect, the present invention relates to a method for stacking pastes of the kind defined in the preamble of Claim 1 and intended for the production of booklets. According to a second aspect, the invention relates to a paste of the kind defined in the preamble of Claim 7 and intended for a booklet and, according to a third aspect, the invention relates to a method for making a booklet of the kind defined in the preamble of Claim 14.

BACKGROUND OF THE INVENTION It is known how to "make leaflets from the pastes of the kind in question.These pastes and the methods of making booklets that start from the pastes are described in O / 265 35, among other publications. know-how makes it possible to produce high quality brochures in a simple and rational way in environments that are not primarily related to the production of brochures, folders P1302 / 99MX or books. Although the known pastes and methods can be used and applied mainly in production, they are mainly used for the production of brochures that are products that have a subsequent handling, for example, products in office environments in which different types of material are presented of printing in a functional way, where the brochures produce the best advantages in this production. The area of use extends from brochures that contain only a few sheets of paper to compendiums that include several hundred pages or pages. The production method allows the production of brochures that go from just a few brochures to a relatively large print run that includes several tens of thousands of brochures to be obtained in an economical way with implementations of methods that adapt to the run of the intended series. However, the known pastes and the methods applied in the manufacture of leaflets based on these pastes are affected with a problem related to the binding agent. The binding agent comprises a strip of adhesive material or substance applied firmly to one side of the dough spine, the adhesive strip or layer is butted with the pack of paper sheets between the doughs and the activated adhesive, for example, when applying heat to it. The binding agent goes from this P1302 / 99MX from a solid state to a molten or semi-molten state, in order to allow the sheets to penetrate into the binding agent. When the binding agent is allowed to harden, the sheets are firmly fixed in the paste and with this the brochure is completed. However, it has been found that the binding agent has adhesive properties to some degree even when in a solid state, in particular when the binding agent is spread against a surface for a long period of time and under a certain pressure. This adhesiveness is undesirable and can cause problems in some cases. This applies in particular to the case where the pulps are stored and handled by placing them in stacks, with the inner surface of the spine of a paste butt against the external surface of the spine of an immediately adjacent pulp and the strip of the binding agent in contact with the external surface of the spine. This is the case when the pastes are placed in a V-shaped stack in the type of deposit described in the patent specifications mentioned above. In this way, the pastes are forced to adhere to each other and thus cause disruption in production, in particular, in view of the relatively high degree of mechanization used in the use P1302 / 99MX of the binding machines described in the aforesaid patent specification. Against this background, the object of the present invention is to try to eliminate the problem of adhesion between the pastes that are going to be used in the manufacture of brochures and that are stacked with the spines of the pastes butt against each other.

OBJECTIVES AND ADVANTAGES OF THE INVENTION In accordance with a first aspect of the invention, this object is achieved by a method of stacking pastes of the type defined in the preamble of Claim 1 and comprising the particular steps set forth in the characterization portion of the invention. that Claim. The term "activatable binding agent", in the sense used in Claim 1 and elsewhere in the document, means that the binding agent can be activated to perform its binding function. The term "deactivating separator means" implies that the separation function of the separating means can be deactivated, that is to say, this function is caused to stop. As a result of disposing a special separating means between the pastes, the binding agent on a paste can not be brought into contact with the Pl_ 02 / 99MX loin of an adjacent pulp, so that the risk of mutual adhesion of the pulps is excluded. Although the spine separating device may consist of a separate element that is deactivated when a pulp is advanced for processing, upon removal of the pulp member, the separating device will preferably be attached to the binding agent. This simplifies the handling procedures. Accordingly, in a preferred embodiment, the separating devices have the form of a woven material attached to the binding agent. This allows the separation function of the devices to be deactivated more easily. Preferably, the pastes will already have been provided with those separating devices when they are handled for stacking purposes. In this regard, the separating devices can be applied to the respective pastes at the time of their manufacture, in a rational manner. The embodiments described above and other advantageous embodiments of the plating stack method of the invention are set forth in the Claims dependent on the method of Claim 1. In accordance with a second aspect of the invention, the aforementioned object is achieved with a P1302 / 99MX brochure of the type defined in the preamble of Claim 7 and having the particular features set forth in the characterizing portion of that Claim. The application of a spreader device to the binding agent of the paste avoids the risk that the pastes adhere when they are placed on top of each other. In a preferred embodiment, the deactivating separator device is for the purpose of being deactivated together with the activation of the binding agent. In this way, no particular measures are required to deactivate the separating device in order to allow binding of the booklet to take place and that the binding can be carried out in one integrated step. In another preferred embodiment of the paste, the separating device is attached to the binding agent by virtue of parts of the device that penetrate the binding agent and parts of the device projecting outwardly from the surface of the binding agent. This allows the separating device to be easily applied to a paste during its manufacture and easily deactivated. Preferably, the separating device will consist of a woven material. The woven material is P13Q2 / 99MX can be applied and deactivated easily and, therefore, also has the advantage that the woven material will stiffen the spine of the finished booklet. The paste embodiments of the invention described above and other advantageous embodiments thereof will be apparent from the claims dependent on claim 7. In accordance with a third aspect of the invention, the subject of the invention is also achieved with a method of making the booklet of the type defined in the preamble of Claim 14 and comprising the particular steps set forth in the characterizing portion of that Claim. In this way a method of manufacturing booklets is provided in which the separating device on the one hand prevents undesirable adhesion of the pastes that are adjacent and, on the other hand, the deactivation of the separating device and the activation of the binding agent are integrated, in order to allow the actual binding operation to be carried out without the need of special measures for this and without the device separator disrupts or obstructs the binding of the bundle of sheets with the spine of the booklet. Preferred embodiments of the method of the invention will be apparent from the Claims dependent on Claim 14.

P1302 / 99MX BRIEF DESCRIPTION OF THE FIGURES The invention will now be described in greater detail, with reference to the preferred embodiments of the various aspects of the invention and with reference to the accompanying drawings, in which Figure 1 illustrates a machine for binding known books, with which the invention can be applied; Figure 2 illustrates a stack of pastes one on top of the other; Figure 3 is a perspective view of a part of a paste of the invention; Figure 4 is a sectional view of a part of the spine of a dough of the invention; and Figure 5 is a sectional view corresponding to the view of Figure 4 and illustrating a paste with bound sheets therein.

DETAILED DESCRIPTION OF THE INVENTION The binding machine illustrated in Figure 1 is of the kind known in WO 94/26 535, for example. The machine does not form a real part of the present invention and the description of its construction as-i as its form of operation have the sole purpose of providing an antecedent that will facilitate the understanding of the present invention.

P1302 / 99MX The arrangement according to Figure 1 is incorporated in a machine that includes a base resting on wheels 2. The main parts of the machine consist of an arrangement in the form of a platform 10 that receives the loose-leaf packages B, which arrive from a copier or printer (laser), not shown, an arrangement 3 that transports the packs of sheets to a collection or storing device 4, an arrangement 5 for taking the pastes A from a K cartridge and transporting them the pastes towards the collection device 4, one at a time, an arrangement for collecting the pasta from the collection device 7 for the activation of a binding agent on the spine of each paste A, in order to bind the package of sheets on the spine of the dough, an advancement device 8 for pushing the bundle of sheets into the respective pastes as the pastes pass through the activation device 7 and a device 9 for transporting out the leaflet H consisting of packs of bound sheets B in the respective pastes A. The device 3 transporting the bundle of sheets includes a plate 12 which can be inserted between the platform 10 and a bundle of sheets B which rests therein and which is mounted in lia, on an arm 11 which is mounted on 12 and causes to swing towards P1302 / 99MX back and forth by a drive means, not shown. The arrow Pl indicates this swinging movement in one direction (clockwise). The plate 12 also causes the forward and rearward swinging on the arm 11 by the driving means which is also not shown. Arrow P2 shows this swinging movement in one direction (counterclockwise). Mounted on plate 12 at 14 is a U-shaped holding device 15 which is swung by a driving means (not shown) between a position, in which the clamping device firmly presses a bundle of sheets B that lie in plate 12, as shown in the solid lines of Figure 1, and a position in which the U-shaped holding device is separated from the bundle of sheets, as shown in the chain-shaped lines of the Figure 1. The B-sheet package usually consists of a packet of loose sheets of paper of the same size (A4). Each of the pastes A consists of a sheet of cardboard and / or plastic material that includes fold lines along which the sheet is folded and which delimit two sheets of dough and a spine located between them. A binding agent is applied to the inner surface of the spine, which normally consists of P1_02 / 99MX a strip of adhesive thermoplastic material that is solid at room temperature, but softens when heated. A large number of pastes are packed in containers or K cartridges intended to be inserted into the machine, in the manner illustrated in the Figures and described in more detail below. Each cartridge consists of a box made of cardboard or similar material, the box is closed during storage and transport. Although not shown, the cartridge is provided with weakening, which allows part of the cartridge to be removed in order to expose an opening Kl through which the pastes A can be removed from the cartridge. The cartridge K includes a stop means opposite the openings Kl or a counterpressure means K2 which functions to center the pastes in the cartridge and which can be an integral part thereof. The cartridge K also includes a support element K3, preferably in the form of a cardboard wedge, which extends between the two side walls of the cartridge and which can be moved obliquely upwards and downwards in the cartridge, as is evident from Figure 1. An empty K-cartridge is filled with the pastes A by inserting a V-shaped stack into them, for example through the bottom of the cartridge, and then pushing the wedge K3 through the bottom P1302 / 99MX of the cartridge and inside the cavity defined by the cover that is more inwards. The bottom of the cartridge is then closed. The paste A that lies further out of the full cartridge K rests against the stop surface K2 and a part of the cartridge (not shown) identical to the stop surface, this part of the cartridge is later removed when the cartridge is opened , in order to form the opening Kl. This paste, in turn, lies against an additional paste in such a way that the binding agent on the back of the dough mentioned at the beginning will be located opposite to the outer surface of the back of the dough mentioned at the end and in contact therewith or a short distance from it. The stop K2, the part of the cartridge and the wedge 3 ensure that the pastes are centered in the cartridge and retain their configuration in a V. In the drawings are shown two parallelepiped K cartridges with their covers removed, the cartridges are shown in relation juxtaposed in the illustrated machine. More specifically, each cartridge is removably inserted into a movable support 16 and 17, respectively, which can be easily moved with the help of wheels 18 and expansion bars 22, from an outward position of the machine table 1 to a position inside the machine. When one of the mobile supports 16, 17 that P1302 / 99MX transport a cartridge K is pushed inside the machine, a sword 19 mounted on the machine penetrates a side wall of the cartridge and passes inside the wedge K3. Subsequent to this, the sword 19 moves upwards by means of a reversible motor 20, connected to the sword by means of a band 21. This movement causes the wedge K3 to move upwards in the cartridge while dragging the pastes A while sword A cuts a slot in the side wall of the cartridge. The cutting of the side wall can be facilitated, for example, by providing suitable perforations in the side wall. Alternatively, the cartridge can initially be provided with that slot. The sword, the wedge and the pastas continue to move until the pasta A that is higher (more external) acts on a photocell means (not shown) disposed above the cartridge K, after which the photocell releases a signal that stops the motor 20. The activating means 7 includes a conveyor consisting of two driven carriers 15 synchronously, identical, each consists of two driving belts 51 toothed in mutually identical form and which are interconnected by means of rocker arms 52. The shortest distance between the rockers interconnecting the carriers is less than the height of a paste A The two bands 51 of each carrier 50 are P1302 / 99MX drive by means of identical sprockets 53 which are coupled together by means of shafts 54. The lower ends of the shafts 54 have bevel gears 55 which are engaged with bevel gears 56 mounted on an axis 57, of these ends one is it rotates by means of a motor (not shown). Each of the axes 75 is provided with a respective roller 58. An endless band 59 runs around the rollers 58 at a speed that is synchronized with the speed of the carriers 50. A heating means 60 and a cooling means 61 are placed between the upper and lower sections of the band 59. A pasta A, or several pastes A, containing a packet of paper B, or respective paper packages B, inserted between the carriers 50 by device 6, are collected by rocker 52 and band 59 as the carrier moves to the right in Figure 1. As the pastes A with the paper packages B are transported through the actuator device 7, the thermoplastic adhesive strips on the inner surface of the respective spines are heated by the heating device 60. , which causes the glue to melt or soften and the sheets of paper to be immersed in it. Subsequent to this, the pastes move away from the heating device towards the P1302 / 99MX cooling device 61, in which the strip of glue solidifies and with this the bundles of sheets B are bound with the inner surface of the respective spines. As the pastes A and the bundles of sheets B are passed through the heating path of the device 7, ie on the device 60, the sheets of paper are advanced by the device 8, in order to Straighten the edges of the respective sheets. Figure 2 illustrates the pastes placed in a V-shaped stack A. The pastes illustrated in the stack A can be pastes that are contained in a thin cardboard box for storage and transport, or the pastes can be stacked in a deposit Kl of a machine in accordance with Figure 1. Although the pastes in the illustration of Figure 1 are shown with their ridges facing upwards obliquely, the pastes can be stacked, alternatively, by placing their loins oriented directly below, as shown in the Figure 2. When stacked in this way, the binding device lies on the inner surface of a loin of the dough and against the outer surface of the loin of the immediately adjacent dough. Each binding device consists of a strip of glue applied to the inner surface of the spine of a paste and the woven material is applied firmly to P1302 / 99MX the surface of the glue strip that lies away from the spine. This allows the pastes to be stacked together in the manner shown in Figure 2 without the danger of one paste adhering to the other. Figure 3 is a perspective view of a paste of the invention shown on a large scale. The pasta consists of two sides 101 and 102 of the dough interconnected by a spine 103. The strip of glue is applied to the inner surface of the spine, essentially along the entire length of the spine. The glue used can be any suitable type of glue normally used in the graphic arts industry, for example, a molten glue based on EVA (Ethylene Vinyl Acetate). To its upper surface is attached a piece of gauze 106 consisting of 100% cotton and a type commonly used in the graphic arts industry. The gauze 105 forms the separating device that prevents a spine of the adjacent dough from coming into contact with the glue strip 104 as illustrated in Figure 4, which is a sectional view of a portion of the loin of the dough on a scale even bigger. The cotton yarns 106 of the gauze material are partially embedded in the glue strip 104 and thereby firmly attached thereto. Figure 4 shows only the gauze yarns that extend in a P1302 / 99MX direction, and those threads that extend angularly to the threads shown are hidden from view. The upper portions of the yarns lie on the surface of the glue strip, such that the external surface of an adjacent spine 103a is placed in the aforementioned paste, which will rest against the upper surface of the yarn 106 of the gauze and with this leaves an opening of a few hundred millimeters, which is enough to prevent adhesion. The figure is intended to schematically illustrate the function principle of gauze 105. In practice, not all threads will be partially embedded or protrude partially. On the contrary, some threads will be partially embedded, some will be fully embedded and some will lie completely on top of the glue surface, although the result will be the same. When the pulps are used in the production of brochures, a paste is removed from the stack, either manually or mechanically, in a machine of the aforementioned type and a pack of sheets of paper is inserted between the sheets of the dough and put butt with gauze or similar woven material. Subsequent to this, the glue strip 104 is heated in order to melt or semi-melt it. Gauze 105 will no longer be supported on the same magnitude by the line of P1302 / 99MX glue but will be immersed in it as illustrated in Figure 5. With this, the gauze is pressed into the glue strip, either as a result of the weight of the package 107 or by actively applying pressure to the package. The glue strip has a thickness of 0.8 mm and the gauze yarns have a diameter of 0.2 mm, so that when the pack of sheets presses the gauze towards the bottom of the glue tip, the package will be located at a distance 0.2 mm from the real loin of the pasta. The separating device formed by the gauze in this way is deactivated in this process step by the aforementioned operation, that is, by heating the glue strip and pressing the pack of sheets against the glue strip. Subsequent to the pack of sheets having reached the position shown in Figure 5, the glue strip is cooled in order to secure the pack of sheets firmly in the dough, thereby providing a finished booklet. It will be understood that the separating device does not necessarily consist of woven material or gauze as in the illustrated embodiment, but may consist of separate elements, mutually applied to the upper surface of the glue strip, such as a powder. Alternatively, the separating device may consist of a perforated strip, by P1302 / 99MX example a perforated plastic strip. The separating function is deactivated, in both cases, by pressing the separating device down on the strip of melted glue. Alternatively, the separating device may consist of a film of complete coating material that has no adhesive effect and has approximately the same melting point as the binding agent. In this case, the separating device is deactivated upon melting and mixing with the binding agent.

P1302 / 99MX

Claims (17)

1. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and, therefore, the content of the following CLAIMS is claimed as property; 1. A method for stacking pastes for the production of brochures, where each paste includes two sheets of pulp and a spine that interconnects the sheets and has on its internal surface an activatable binding agent to fix a pack of sheets between the sheets. sheets of pasta, the pastes are stacked together mutually to each other, characterized in that a deactivating separator device is provided between the binding agent and the immediately adjacent paste.
2. 2. A method according to claim 1, wherein the pastes are applied with their respective loins abutting each other and with each sheet of dough bent upwardly relative to its respective spine.
3. 3. A method according to Claim 1 or 2, wherein the separating device is fixed to the binding agent.
4. 4. A method according to Claim 3, wherein the separating device is applied to the surface of the binding agent lying away from the spine, in the form of woven material, preferably a woven, coarse mesh material. P1302 / 99MX
5. 5. A method according to Claim 3 or 4, wherein each paste is manipulated to be stacked with the separating device applied to the binding agent.
6. 6. A method according to any of the Claims 1 to 5, wherein the binding agent can be activated by heating, and wherein the separating device can be deactivated by heating.
7. 7. A paste intended for the production of a booklet, wherein the dough includes two sheets of dough and a spine interconnecting the sheets of dough and in which is applied, on its internal surface, a device for binding including a an activatable binding agent for fixing a pack of sheets between the sheets for pulp, the binding agent is fixed to the spine, characterized in that a deactivating separator device is applied to that surface of the binding device lying off the spine, so that if a surface is placed against the binding device, the deactivating separating device will essentially prevent direct contact between the binding agent and the surface.
8. 8. A paste according to Claim 7, wherein the separating device is adapted to be deactivated at the same time as the release agent. P1302 / 99MX binding is activated and also through the means of activation of the binding agent.
9. 9. A paste according to Claim 8, wherein the separating device has parts projecting above the surface of the binding agent.
10. 10. A paste according to Claim 9, wherein the separating device is fixed to the binding agent.
11. A paste according to Claim 10, wherein the separating device has portions that penetrate the binding agent and by means of which the separating device is fixed to the binding agent.
12. 12. A paste according to Claim 11, wherein the separating device comprises a network structure.
13. 13. A paste according to Claim 11, wherein the separating device comprises woven material, preferably coarse-mesh woven material.
14. 14. A paste according to any of Claims 7 to 13, wherein the binding agent can be activated by heating thereof.
15. 15. A method for producing a booklet, wherein the method comprises providing a dough that includes two sheets of pasta and a spine that interconnects P1302 / 99MX the pulp sheets, whereby the internal surface of the spine has applied thereto a binding device which includes a binding agent for fixing a bundle of sheets between the sheets of pulp, the binding agent is fixed to the spine and the pack of sheets is ensured by activating the binding agent and then deactivating the binding agent, characterized by providing in the paste a separating device mounted on the surface of the binding agent, removed from the spine; place the pack of sheets against the separating device; deactivating the separating device partially by activating the binding agent and partially by pressing the package of sheets against the separating device, in such a way as to press the separating device into the binding agent, over a distance sufficient for the package to leaves also penetrate the binding agent.
16. 16. A method according to Claim 15, wherein the paste used in the method includes a separating device in the form of woven material, fixed to the binding agent, preferably thick-mesh woven material.
17. 17. A method according to the Claim 15 or 16, wherein the binding agent is activated by heating and P1302 / 99MX deactivates by cooling. P1302 / 99MX SUMMARY OF THE INVENTION According to one aspect, the invention relates to a method for stacking pastes for the manufacture of booklets. Each pasta includes two sheets for pasta and one spine for interconnection. A binding device that includes a binding agent is applied to the inner surface of the spine. The pastes are stacked mutually with the inner surface of the spine of a dough lying against the outer surface of the spine of an adjacent dough. In accordance with the invention, a deactivatable separation device is provided between the binding agent and the external surface of the spine of an adjacent pulp, in order to prevent adhesion between the loins of the respective pulps. According to another aspect of the invention, a paste of this type is provided with a binding device that includes a binding agent (104) and a separation device (105) disposed on the surface of the binding agent that lies apart from the spine (103), this separation device preferably has a woven material shape, fixed to the binding agent (104). The invention also comprises a method for the production of a booklet with the use of the dough of the invention. In accordance with the method of manufacture of the invention, the device Separation P1302 / 99MX is deactivated at the same time as the binding agent is activated and a pack of sheets moves into the back of the dough. P1302 / 99MX