SI9620138A - Improved apparatus and method for applying coating materials to individual sheet members - Google Patents

Abstract

Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets form a transfer belt (71).

Description

MINNESOTA MINING AND MANUTACTURING ΟΟΜΡΑΝΥ

Improved preparation and release process application of coating materials to individual sheets or lists

FIELD OF THE INVENTION

The present invention generally relates to the preparation and process for the release or application of coating materials to several overlapping individual poles or. sheets such as individual sheets of paper. A specific aspect of the invention relates to the preparation and process of release or release. application of coating material to both opposite major (larger) surfaces of several individual sheets.

BACKGROUND OF THE INVENTION

Often, liberation is required. the application of coating materials to paper and in some cases the application of various exfoliating and / or coating materials. coating materials on both main surfaces of the paper. For example, in the production of downloadable sheets in blocks ("cubes" for temporary installation of message sheets), such as blocks or. Post-It® (Reg. Trademark) notebooks supplied by the Minnesota Mining and Manufacturing Company, known application of base coat material to one side of the paper from which transferable sheets in blocks will be cut, and adhesive application with low adhesive strength, or so. release material to the other side of the parrot. The adhesive for transferring the sheet is then applied to the paper on top of the primer. Usually, in the production of transferable sheets from blocks, various exemptions or impurities are involved. coatings on roll paper drawn from a continuous roller. Layers respectively. the coating materials are dispersed in solvents and applied directly to roll paper. The roll is dried during the peelings and then re-rolled, after which the rolled roll is cut into sheets, which is later used to produce the blocks.

A process for the production of blocks of transferable sheets in which they are anti-receptive or separating material and priming material applied sequentially on opposite sides of roll paper is described in WO-A-87/05315.

In some cases, however, it is more desirable to apply an emollient or a. of coating material to cut sheets rather than a continuous roll of paper. For example, in the production of blocks of transferable sheets to extend the flexibility of the manufacturing process, it is often desirable to use a stack of pre-printed sheets as a source of supply instead of a roll of blank, i.e., unprinted paper. In addition, for environmental reasons, it is desirable to move away from the use of organic solvents in such environmental degrading processes and to move towards more environmentally friendly water-based materials. However, it is worth noting that many inks are soluble in organic solvents and insoluble in water.

WO 94/19419 shows and describes the preparation and process for forming blocks of transferable sheets from a stack of uncoated or coated sheets. uncoated single sheets of paper. The sheets are guided from the stack in an overlapping condition to a dewaxing station, where a continuous layer of water-based primer is applied to one of the main surfaces of the pseudo-roll of the overlapping sheets and a continuous layer of weakly adhesive adhesive material (LAB) is applied east to another main surface. The overlapping leaves are then dried and fed to another dehumidification station where the lines or lines are located. strips of transferable adhesive transferred from an endless conveyor belt to a pseudo-roll of overlapping sheets, the surface of which was primed in the first treatment station. After that, the leaves are glued to the stack and trimmed to form blocks of transferable leaves.

Laying individual sheets or sheets. pol

In some emancipation processes, it may be more preferable for the sheets to be emitted individually than in the form of an overlapping pseudo-roll. However, commercial release plants are generally designed to release a continuous roll of paper taken from a large disc and cannot store individual sheets.

As a result, they are further striving to develop a commercially viable system that will allow individual sheets to be released or removed. pole with an effective amount of liberation or. coating material.

Overlay Direction Wrap (Anti-overlap)

In some cases it may be easier to handle overlapping individual leaves by circumventing the direction of overlap as the leaves pass through certain segments of the dewaxing process. Where such overlapping direction loading is desirable, the device used to achieve overlapping should operate reliably over a wide range of formats, weights and sheet types.

We have found that existing systems for applying dehumidifying materials to the sheets - although useful in their own right - are not as efficient and flexible as desired. We have also found that existing systems that use an infinite portable surface or. Plates for applying dehumidifying material to the sheets generally cannot solve the problems of removing leaves and dehumidifying material from the transfer surface when it comes to certain types of dehumidifying material and / or certain types and formats of leaves subject to dehumidification. Therefore, an improved process and preparation for release or desulphurisation is desirable. application of coating materials to sheets or poles, including an improved process and preparation for transferring detergent material from an endless transfer surface to sheets or sheets. pole.

SUMMARY OF THE INVENTION

Loading other sheets

The aspect of the sheet insertor of the present invention provides a preparation and process that is effective for periodically inserting various other sheets into a series of overlapping sheets that need to be provided with a release. The preparation includes: (i) a sheet stacker that works by sequentially introducing the first sheets from the stack of first sheets to the conveyor in an end-to-end overlapping relationship, (ii) a sheet feeder that works by inserting at least one second sheet from the second stack to the overlapping first leaves on the conveyor, and (iii) a dehumidifier positioned to receive the overlapping sequence of the first and second leaves from the conveyor and to act by applying the dehumidifying material to at least one major surface of each leaf.

The process comprises ordered steps: (a) introducing the first leaves from the first stack of leaves into the path of the leaves in their end-to-end overlapping relationship, (b) transporting the overlapping first leaves along the leaf path, (c) inserting at least one the second leaf from the second leaf stack to the overlapping first leaves, which are guided along the path of the leaves so as to form a sequence of first and second leaves arranged in an overlapping end-to-end relationship, and then (d) applying the dewatering material to at least one main surface of each of the first and second leaves in the order that we continue to transport the leaves or half their way.

Both sheets are separated from each other on both sides. pol

The aspect of double-sided release according to the present invention provides a preparation and a process for simultaneously applying water-based dewatering material to both major surfaces of separate individual sheets or sheets. pol. The preparation includes: (i) a double-release system in position for sequentially receiving individual leaves; half as long as they are transported along the leaf path, the dehumidification system comprises first and second dehumidifying mechanisms in position on opposite sides of the leaf path, each of the dehumidifying mechanisms acting by applying water-based dehumidifying material the main surface of each leaf; (ii) a dryer located along the leaf path for removing water from water-based dewatering materials applied to leaves by a dehumidifying mechanism; (iii) leaf editing aids as they emerge from the dryer into a consecutive end-to-end overlapping connection; and (iv) a second dehumidifying mechanism arranged along the leaf path and acting as a receiver of the overlapping leaves and for applying another dehumidifying material to one side of the overlapping leaves.

The process comprises ordered stages: (a) sequential introduction of individual leaves from the first leaf stack to the leaf path; (b) transport of overlapping first leaves along the leaf path; (c) applying water-based dewatering material over the main surface of each individual sheet transported along the sheet path; (d) drying the released leaves during continuous transport of the leaves along the path of the leaves; (e) arranging the dried leaves into an end-to-end overlapping relationship; and then (f) the continuous application of the second release material to at least one major surface of each of the arranged leaves while the leaves are continuously transported along the leaf path.

Coating drum with lining

The aspect of the coating lining drum of the present invention provides a preparation and process for applying a coating material on at least one main surface of separate individual sheets or sheets. pol. The preparation includes: (i) a release cylinder; (ii) a support sheet or. a polo detachably attached to the surface of the release cylinder; (iii) an elastomeric overlay that is glued to the support sheet; poly extending only beyond a portion of the circumference of the release cylinder; (iv) a gripper cylinder aligned with the release cylinder to form a gripper only with that portion of the release cylinder covered by the overlay element; (v) the source of the coating material; and (vi) devices for applying the coating material from the source of the coating material to the coating element on the coating cylinder.

The process comprises ordered steps: (a) depositing the dehumidifying material from the source of the dehumidifying material to the overlapping element on the dehumidifying cylinder; and (b) the transport of single sheets or. a pole into the grip formed between the release roller and the receiving roller in such a way that the sheet or roll. pole is registered and in line with the overlay element on the release roller, so that the release material on the overlay element is transferred to the sheet or roll. polo without transferring it to the grip roller.

Turn in the direction of overlap

The aspect of changing the coating according to the present invention provides a preparation and a method for circumventing the direction in which the leaves and / or the sheets overlap. The preparation includes: (a) a first transport device for transporting a series of overlapping sheets or a. the pole where the drawn edge of each leaf is positioned below the leading edge of the next leaf, respectively. pole; (b) a second conveyance device fitted to receive the sheets, or. poles from the first transport accessory; and (c) a device positioned between the first and second conveyance means for changing the overlapping positions of the leaves or the conveyor. half, keeping the leaves received from the other conveyance device in a line with the drawn edge of each leaf, respectively. the pole positioned above the leading edge of the following sheet or sheet. pole. A device used to change the overlapping positions of leaves or leaves. pole, comprises: (A) a blower for directing the air flow to the overlapping edges of each pair of poles or of leaves, so that. we move these parts of the edges away from the plane defined by the order of the leaves, respectively. gender; and (B) means for holding the next return of the trailing edge of the guide sheet, or. sheet so as to ensure that such a drawn edge is consistently deposited at the top of the leading edge of the next sheet or sheet.

The preferred embodiment of the coating change aspect of the present invention situates a device for changing the coating between the double-release system and the dryer in the aspect of the double-release coating of the present invention. In this embodiment, the sheets or. semi-freeed individually (one by one) in the double-release system and then deposited on the first conveyor aids, such that the drawn edge of each sheet or sheet is in a position below the leading edge of the next sheet or sheet. When there are overlapping leaves or. the poles transferred from the first conveyor to the second conveyor for transport to the dryer, and the device for changing the cover swirls the overlapping positions of the leaves, respectively. half, thus drawing the edge of each leaf or. places the sheet in position at the top of the leading edge of the next sheet or. pole.

The process comprises ordered steps: (i) transporting a succession of overlapping leaves to the first conveyor, with the drawn edge of each sheet respectively; the sheet in the position below the leading edge of the next sheet, respectively. pole; (ii) transferring an overlapping sequence of sheets from the first transport device to the second transport device; and (iii) changing the overlapping positions of the leaves, respectively. half, when the leaves are transferred from the first transport aids to the other transport aids, such that the leaves or. The sheets shall be taken into another conveyance device and arranged with the drawn edge of each sheet or the sheet positioned above the leading edge of the next sheet or sheet. pole. Preferred devices with which the relative overlapping positions of the leaves vary include the steps of: (I) blowing the air flow to the overlapping edges of each pair of leaves, or. half so that we move such parts of the edges from the plane defined by the order of the leaves, respectively. gender; and then (Π) holding the next return of the trailing edge of the guide sheet or. sheets so as to ensure that such a drawn edge is consistently deposited on top of the leading edge of the next sheet or sheet. pole.

Recording (removing) loose leaves pole from the transfer surface

The aspect of recording a sheet or. The sheet according to the present invention provides a preparation and a process for facilitating the consistent removal of overlapping sheets or sheets. pole and dehumidifying material from the transfer surface used to transport the dehumidifying material into contact with the pseudoswitch of overlapping leaves or. pol. Sheet preparation is particularly useful in relation to a transmission system designed to transfer at least partially dried debris into a pseudo-roll of overlapping leaves. In short, such a portable system transports the pseudo-roll of overlapping sheets. half to the transfer area, where an endless transfer surface moving in the same direction and at the same rate as the pseudo roll contacts the main surface of the conveyed sheets or poles in order to transfer transfer material from the transfer surface to the transfer sheets . a pseudo roll pole. The coating material is remotely applied to a transfer surface with a feeder that can apply a variety of release materials with different thicknesses and variable patterns across the transfer surface.

Preparation for recording (removal) of the sheet or. the box shall include: (a) a recording conveyor located directly adjacent to the path of the leaves leaving the transfer area; and (b) a source of pressure controlled so as to (A) provide a region of pressure along the first length of the conveyor, in the position closest to the transfer site, which is effective for the recording of leaves or. the pole from the transfer surface and the dragging of the leaves respectively. half into a portable conveyor; and (B) creating an area of subpressure along the second length of the conveyor, which is effective for maintaining sheets glued to the recording conveyor as the leaves move away from the transfer location.

The process comprises ordered stages: (i) transport of the pseudo-roll of overlapping sheets or. half along the leaf path and through the transfer area; (ii) depositing the dehumidifying material on the surface of an endless transfer surface; (iii) contacting the first major leaf surface, or half in a pseudo roll with a loose endless transfer surface when transporting leaves or. pole through transmission area; (iv) applying a partial vacuum to that part of the conveyor which is in a position directly downstream of the transfer location, which is effective for the removal (removal) of leaves and debris from the transfer surface and the withdrawal of dehydrated leaves or. pole into conveyor; and (v) applying a partial vacuum to the equilibrium of the conveyor, which is in a downward position from the transfer area, which has the effect of maintaining the leaves depleted adhered to the conveyor as the leaves move away from the transfer area.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic side view of one embodiment of the invention.

Figure 2 is a schematic floor plan of the apparatus shown in Figure 1.

Figure 3 is a schematic side view of another embodiment of the invention.

Figure 4 is a schematic outline of the apparatus shown in Figure 1.

Figure 5 is a schematic side view of a third embodiment of the invention.

Figure 6 is a schematic representation of the leaf or leaf positions. the pole at the entrance to the bilateral release stage forming part of the apparatus shown in Figure 1.

Figure 7 illustrates an alternate arrangement of the leaves, respectively. the pole at the entrance to the bilateral release stage forming part of the apparatus shown in Figure 1.

Figure 8 is a schematic side view of the bilateral release station forming part of the apparatus shown in Figure 1.

Figure 9 is an enlarged schematic side view of a part of the stage for double-sided release from Figure 8. Figure 10 is an outline of the end part of the delivery system for the material for the stage for double-sided release shown in Figures 8 and 9.

Figure 11 is an enlarged cross-section of the release drum (33) shown in Figures 8 and 9.

12 is a schematic side view of a second embodiment of the stage for double-sided release.

Figure 13 is an enlarged schematic side view illustrating a portion of the apparatus shown in Figure 1.

Figure 14 is an enlarged outline of the end portion of the vacuum cylinder system (61) shown in Figure 13.

Figure 15 is an enlarged schematic side view illustrating the adhesive transfer rate shown in Figure 1.

Figure 16 is an enlarged side view illustrating a portion of the adhesive transfer rate shown in Figure 15.

Figure 17 is an enlarged partial view of the vacuum container (94) shown in Figure 16.

Figure 18 is an enlarged partial view of the vacuum strip (95) shown in Figure 16.

Figure 19 is a schematic outline of an alternative arrangement of the leaves, respectively. pole useful for operating the apparatus shown in Figures 1, 3 and 5.

Figure 20 is an enlarged side view of a station for leaf introduction or. the pole shown in Figure 5. Figure 21 is a schematic side view of part of another embodiment of the adhesive transfer step.

22 is an enlarged partial view in the direction of arrow 4 in FIG. 21.

Figure 23 is a side view of the release roller and the smoothing strip of Figure 22.

Figure 24 is a greatly enlarged outline of the engraving rings (77 r) shown in Figure 22.

25 is a schematic side view of a third embodiment of an adhesive transfer system.

Figure 26 is an enlarged partial view in the direction of arrow 8 of Figure 25.

Figure 27 is a cross-sectional view of one embodiment of the conveyor belt shown in Figures 21 and 25.

28 is a photomicrograph illustrating a portable adhesive that has been manually applied to a conveyor belt of the apparatus shown in Figures 21 and 25.

DETAILED DESCRIPTION OF THE INVENTION INCLUDING ITS BEST DESCRIPTION Description of the position numbers:

a stack of leaves or. half sheet insertor respectively. pol

2a the sheet feeder or pol

2b a stacker of insertion sheets of grade a for both estranic release rates for leaf spacing respectively. semi dryer sheet for keeping sheets respectively. half rate for transfer of glue rate for covering of sheets or. half rate for storing leaves or. half table stack of leaves or. half suction head

12a Injector Nozzle Steam to Exercise Roller A First Conveyor Shutter Door Upper Release System Lower Release System Insert Sheet respectively. half missing sheet or. half previous sheet or. half the next leaf oz. pole gearbox double clutch pair of cylinders for compression line upper measuring cylinder upper trough for coating material upper relief cylinder upper anti-roller lower drum lower measuring cylinder lower LAB cuts lower sink for LAB lower anti-roll groove lower anti-roll groove leaves or. half lining support sheet or. half nozzle first supply reservoir for priming material pump overflow outflows lower nozzles supply reservoir for LAB pump outflow outlet junction second conveyor stapler endless chain blower source of pressure third conveyor air cylinder vacuum cylinder end cylinders vacuum cylinder vacuum cylinder and vacuum pump deflection plate transfer point conveyor belt tensioning rollers direction of movement of conveyor belt release system adhesive dryer transfer surface engraving rings (rings) with engraving pump glue supply tank with glue measuring cylinder removal knives outlet fan carry out the transfer of the sheets and / or sheets. poles passing through the field of transfer of the adhesive drive roller free pressure reel grooves in the drive roller soil vacuum container front vacuum tank back space vacuum container openings in the front space openings in the back space standard conveyor additional roller rotary direction of the additional disc openings in the vacuum tr border of leaf or. pole direction of workflow inlet cylinders drive cylinders lever outlet cylinders first part of the distributor device second part of the distributor device stacked on both leaves and dried leaves or. half stack of sheets coated with glue second sheet feeder base layer conveyor belt front larger surface of base layer back (back) larger surface of base layer front separation layer back (back) separation layer

220g notches in the base layer 220h the extreme outer surface of the front separating layer 220i the extreme outer surface of the posterior dorsal separation layer 220j notches in the separation layers 229 ironing strips 230 cells in engraving rings 230A pattern of cells in engraving rings 236 adhesive tapes 239 vacuum cylinder 242 release matrix 245 glue supply line 246 pump 247 filter

Definitions

As used herein, including in the claims, the term "vacuum" means any pressure that is less than atmospheric and has a sufficient attractive force to remove or retain leaves or leaves. pole.

Construction

PREPARATION

The device (not numbered) is specifically designed for use in the manufacture of portable message brochures (not shown) made of leaves or. semi (not numbered) of any suitable base material, for example paper, polymer film or foils such as metal foils, and in particular for application to single sheets or sheets of (non-numbered) base material (not shown), adhesive s low adhesiveness (LAB) (not shown), and adhesive that allows the transferability of leaves (which is not shown), such that the leaves or. the sheets can then be used to design downloadable message blocks for the message blocks. In the following description, we will assume, unless otherwise noted, that the leaves or. sheets (which may be pre-printed) of paper. Papers can be any suitable paper, such as paper used to make Post-It® (reg.

mark) of the transferable block slips by Minnesota Mining And Manufacturing Company ("3M") Paul, Minnesota, USA. If the leaves or. sheets made of paper are sheets or sheets. Preferably, the sheets are transported through the preparation in such a way that the process of processing (which is not numbered) the paper sheets or. half parallel to the direction (indicated by 100) of the preparation operation, in order to reduce the risk of curling or folding of the sheets of paper or paper. half during processing.

FIRST PERFORMANCE

As shown in FIGS. 1 and 2, the first embodiment of the preparation includes a tray of 1 sheet, respectively. a pole that emits a succession of paper sheets or. half (not shown) from stack of 11 sheets to the first conveyor 14 so as to initiate the movement of the paper sheets, respectively. half along the leaf path (which is not numbered). From a tray of 1 sheet or. half of them travel along the leaf path in the direction of the workflow, indicated by arrow 100. the pole then travels (i) past the insert 2 positioned on one side of the leaf path, (ii) through stages 3 for bilateral release, (iii) through stage 4 for leaf spacing, or. pol (iv) through dryer 5, (v) through stage 6 to guide the leaves, respectively. half, and (vi) Grade 7 adhesive transfer. The control and synchronization of leaf displacement or pole through various stages (1 to 7) can be performed with a central electronic control unit (not shown), for example Siemens PLC 135.

As we will describe in more detail below, in the case of non-rotation of the inserts, the 2 sheets, respectively. half leave the leaves or. pole hopper 1 in a continuous stream in which to reduce the space required between the hopper 1 sheets or. pole and grade 3 for double-sided liberation, drawn edge (not numbered) of each preceding sheet or. box 22 overlaps with the leading edge (not numbered) of the following sheet or sheet. box 23. Lists or. however, the sheets are transported separately through step 3 for double-sided release, where they are individually released on one main surface (not numbered) with a primer and on the other main surface (not numbered) with a low adhesive adhesive. Lists or. the poles emanating from stage 3 for double-sided liberation are then covered again in stage 4 for the spacing of the leaves, respectively. half to form a pseudo-roll (not numbered) in which the drawn edge of each sheet or. the sheet is covered with the leading edge of the next sheet. pole 23. The pseudo-roll is then maintained through the remainder of the preparation, but the initial direction of overlap, which is unsatisfactory for the dryer 5 and unsuitable for the adhesive transfer stage 7, is reversed when the pseudo-roll leaves the stage 4 for the leaf spacing or. pol. After passing through the dryer 5 (in which the basic and LAB desiccants are dried), the pseudo-roll passes through step 6 to guide the leaves and / or leaves. the pole where the leaves or. the sheets on the side are registered and aligned, and through the adhesive transfer stage 7, where several adhesive tapes 236 are applied over the main surface of the sheets or sheets. poles free from the primer. Lists or. the sheets are then folded and trimmed as needed to form blocks of transferable slips.

SECOND PERFORMANCE

As shown in FIGS. 3 and 4, the second embodiment of the preparation duplicates the first embodiment until the leaves or. the poles do not reach level 3 for bilateral liberation. In the second embodiment, however, the lists or. once transported through stage 3 for double-sided release, transport through (i) stage 4 for leaf spacing or pol, (ii) dryer 5, (iii) stage 8 for covering the leaves or. half, and finally (iv) Grade 7 for glue transfer.

This slightly modified device allows the transport of leaves and / or leaves. half through level 3 for both release and dryer 5 before covering the leaves or. pol.

THIRD PERFORMANCE

As shown schematically in Figure 5, the third embodiment of the preparation duplicates the first or second embodiment, but splits the process and preparation into two independent and different parts. The first part 121 includes a tray of 1 sheet or. half, 2-sheet insert, respectively. pole, grade 3 for both sides, grade 4 for leaf spacing, respectively. pole and dryer 5, which are described in connection with the first and second embodiments. The first part 121 is completed with stage 9 for storing the leaves or. pole, where we collect leaflets of 130 leaves that are both dewatered and dried, respectively. pol. The second part 122 begins with the doubling of the stock of 1 sheet or. a pole into which a stack of 130 bilaterally released and dried leaves was inserted. pol. The second part then includes a step 8 for covering the sheets or a half and a step 7 for transferring the adhesive described in connection with the first and second embodiments. Finally, the second part, like the first part, ends with a level 9 for the storage of the glue-dried leaves. pol.

This shared system allows each part of the process to be run independently of the other. Therefore, sheets or the sheets are primed and primed with LAB at one time and / or place, and the adhesive is applied to the sheets or sheets. poles at a different time and / or place.

16 '

Alternatively, in the second part of the process, the leaves can be used on both sides. sheets produced by a completely different process than sheets or sheets. sheets produced by the usual roll-to-roll process, by which the primer and LAB are applied to the continuous roll of the substrate or to the roll. the basics, which are then cut into sheets or. pole.

PUBLISHER OF SHEETS OF OZ. POL

Although commercially available, there are a variety of suitable leaf hoppers or. pole, is a suitable stockpile 1 shown in Figure 1. Stockpile 1 shown on Siki 1 is a trailing edge introducer comprising a vertically movable table 10 on which a stack of 11 leaves, respectively. pol. The suction head 12 is positioned above the back edge (not numbered) of the stack 11 for lifting the top sheet or. non-numbered sheet) from stack 11 at the back edge and scroll the sheet or. pole forward. Moving a raised leaf the forward shelf is facilitated by an air jet from the nozzle 12a. The lifted sheet is then taken up by the steam-to-roll cylinders 13 and then transported from the hopper 1 to the first conveyor 14. The suction head 12 returns to its original position and picks up the next sheet or roll. polo and repeat the process, while the first sheet is still present between the steam feed rollers 13. In this way, the drawn edge (not shown) of each previous sheet or roll. box 22 overlaps the leading edge (not shown) of the next sheet or sheet. box 23 while leaves or. the poles pass between the steam feed rollers 13 and are introduced into the first conveyor 14. The length of the overlap depends on the length of the leaves or the conveyor. pole and the ratio between the operation of the suction head 12 and the receiving speed of the steam feed rollers 13. In order to avoid the need for unnecessarily long intervals between the stack of 1 sheet or. half and grade 3 for double-sided liberation, is the length of the overlapping parts of each leaf or. the sheet is preferably quite large. Thus, for example, a satisfactory coverage of about 70% of the length of each leaf or a sheet can be used. pole.

As the height of the stack 11 decreases, the table 10 moves upwards to maintain the top (which is not numbered) of the stack 11 in a predetermined vertical position with respect to the suction head 12. The leaves, respectively. the sheets in each stack are preferably all of the same format and mass. Sheet Feeders half of the type just described are available from a variety of sources including MABEG Maschinenbau GmbH, Offenbach, Germany, under the commercial code "41988".

FIRST TRANSPORTER AND STOP DOOR

Lists or. the sheets originating from the container 1 are deposited on the first conveyor 14 and transported past the container of 2 sheets or. pole to stop gate 15 at entry (not numbered) in Level 3 for double release. If the insert is 2 sheets or. the pole is not in operation, forming overlapping leaves or. sheets deposited on the first conveyor 14, with a container 1, a continuous sequence of overlapping sheets or plates. pole on the first conveyor 14. When each leaf or pole reaches a stop gate 15, its progression is paused while the release drum 33 is rotated to the correct position for transport and release of the leaf and / or leaf. pole. Stopping door 15 is then opened to allow a single accumulated sheet, respectively. poly entry into Level 3 for mutual liberation. Stop Door 15 is then requested before the arrival of the next sheet or. box 23 so as to temporarily halt the progress of this sheet. pole until the release drum 33 is repositioned.

INSTALLATION RATES POL (INSTALLER)

The insert 2 is used to insert one or more sheets, respectively. a pole from another stack of leaves (not shown) in the leaf order or. poles entering level 3 for double sided coating. To prevent interruption or tearing of the pseudo-roll of leaves or the pole formed at stage 4 for the spacing of the leaves or the pole, it is important that the sheets are inserted. poles precisely positioned in the order of the leaves or. poles fed to Level 3 for mutual liberation.

Insert 2 sheets respectively. the pole includes a tray 2b for inserting sheets with a trailing edge, which is generally similar to the tray described with respect to the tray 1 or. pol. The insert 2 is located on the side of the leaf path, respectively. pole and is in the position between hopper 1 and stop door 15. The hopper 2 is equipped with a feeder 2a that feeds the sheets or the hopper. box 20 intended for insertion, directly into the path of the leaves in an upward direction from the stopping door 15. The leaves, respectively. Boxes 20 intended for insertion may be of any suitable type of material, but will normally be slightly different from sheets or sheets. poles emitted by the hopper 1. During each periodic insertion of the sheets or plates. half 20 intended for insertion, the insert holds 2 more overlapping sheets, respectively. the pole on the feeder 2a, which are ready for fast insertion on the leaf trajectory. pol. When you should insert a sheet or. polo 20 in the order of the leaves respectively. poles, which are transported along the path of the leaves or. half, we keep the stock of 1 sheet respectively. half for one cycle so that one sheet will be missing in the order of the leaves guided from stacker 1 to the first conveyor 14 at a predetermined location. The feeder 2a is activated at the appropriate time for inserting the sheet insert. sheets to the path of the leaves to replace the missing leaf or. polo 21. If necessary, more than one sheet or one sheet can be inserted consecutively. polo 20 intended for insertion; in such a case, storage tank 1 should be prevented from operating for the appropriate number of cycles.

Figure 6 illustrates a leaf or a leaf. polo 20 intended for insertion, in the process of handing over to the stopping door 15. The position to be missing is the missing sheet or. pole 21 occupied in the order of the leaves respectively. the pole emanating from the container 1 is indicated by the dashed line 21. The leaf or. half 22 display sheet or. a polo located directly in front of the missing sheet or. polo 21. As soon as the stop door 15 opens and allows the previous sheet or. poly 22 entry to level 3 for bilateral liberation, sheet or. pole 20 intended for insertion, disposed directly in the upward direction (depending on the direction of the process) from the stopping door 15 in place of the missing sheet or. box 21. As the insertion sheet or the. pole 20 inserts from above in the path of the leaves, the drawn edge (not numbered) of the inserted leaf or. box 20 covers the leading edge (not numbered) of the next sheet or sheet. box 23, as if it were an inserted sheet or. half 20 fed from a tray of 1 leaf or. pol.

For paper sheets or. the poles of certain formats can only be performed successfully by inserting the sheet insertion process successfully by changing the speed at which the sheets or sheets travel. sheets from tray 1 sheet to grade 3 for double-sided release. With reference to Figure 6, it should be noted that - although the progression of the previous sheet was. box 22 retained at stop gate 15 - continues transfer of next sheet or. pole 23 against stop gate 15 with first conveyor 14. Slot length (not numbered) between the previous sheet or. polo 22 ter next sheet or. polo 23, depends on the length of the pole respectively. leaves 22 and 23. In some cases, the lengths of the leaves, respectively. poles 22 and 23 provoke the opening of the gap between these leaves or half as long as the advance of the previous sheet or. pole 22 will not stop at stop gate 15. Continuous progression of the next sheet or. box 23 causes the leading edge of the next sheet to come out. box 23 in contact with the drawn edge of the previous sheet or. box 22, while the previous sheet or. pole 22 is still waiting at stop gate 15. This situation is undesirable because it can cause a blockage due to crushing and accumulation of papium. This situation can be avoided by reducing the speed of the first conveyor 14 to the extent necessary to ensure that the leading edge of the next sheet, respectively. box 23 does not come into contact with the drawn edge of the previous sheet or. box 22 when an open slot is created by releasing a single sheet or the boxes for receiving the insertion sheet or. box 20. The specific formats of papias that will require this reduction in speed will depend on the normal speed of the first transport 14 and the time interval during which we maintain the leaves, respectively. shutters at shutter doors 15. For example, we can conclude that we can handle leaves or. A4 format poles without any problems because the length of the slot is caused by the release of one sheet or. pole, always so long that the leading edge of the next pole 23 never comes into contact with the drawn edge of the previous sheet or. box 22. It can also be stated that it is possible to handle the leaves or. A2 format flames without any problems, because even if one sheet or one is omitted. pole, drawn edge of previous sheet or. box 22 always overlaps the leading edge of the next sheet. box 23. This last-mentioned situation is shown in Figure 7, where the position to be taken by the missing sheet or. pole 21, indicated by the dashed line 21. However, we can conclude that the leaves or. a sheet with lengths somewhere between the lengths of the leaves or. A4 and A2 pole formats (210 mm and 420 mm respectively) require a reduction in the speed of the first conveyor 14. Thus, a reduction in speed (which is only necessary when the slots in the sequence of leaves or pole as well as the leaves or pole come into contact with each other, when the advancement of the previous sheet or box 22 is withheld at a stop gate 15), it can be performed with a central electronic control unit (not shown), by means of gearbox 25a and a double-sided clutch 25b tied to the main drive (not shown) of the 1-sheet hopper oz. half as schematically shown in Figure 2.

DEGREE FOR BOTH SIDES

As shown in Fig. 1 and in more detail in Figures 8 and 9, the leaves respectively poles guided through stop gate 15 to stage 3 for double release and are picked up by a pair of gripping rollers 30. A pair of gripping rollers 30 leads a leaf or a roller. the polo between the upper dewaxing system 16 and the lower dewaxing system 17 above or above. below the path of the leaves. The upper dewaxing system 16 applies a base layer (not shown) to the upper main surface (not shown) of each sheet or sheet, and the lower dewaxing system 17 simultaneously applies a layer (LAB) (not shown) to the lower main surface (not shown) ) of each sheet, respectively. pole.

One of the advantages of the subject preparation over other arrangements, such as the one in the above-identified WO94 / 19419 reference, is that the sheets or. pole guided individually through Level 3 for double release without any overlap. This makes it possible that the predominantly total area of the two main surfaces of each of the leaves, respectively. semi liberated with primer and LAB.

Paper is usually formed by the accumulation of paper fibers (not shown) on a wire mesh or in situ (not shown) and the compression of accumulated fibers between a sieve and a layer of felt or fabric (not shown) against a layer formed by a sieve . This produces paper that has a "sieve" side and a "felt" side. It has also been found that it is conveniently transported by leaves or leaves. half through the preparation of the present invention so that the "screen" side is provided for release with a release material (not shown) and the "hat" side is provided for the release with a base coat (not shown) and finally for adhesive release (not shown).

Each leaf, respectively. the polo is simultaneously coated with a primer and a LAB. The primer and the LAB are preferably selected and applied with a similar viscosity, percent by weight of solids, layer weight, etc., so as to reduce the risk of wrinkling or twisting of the leaves, or the liberation pole to a minimum.

The lining obtained in stage 3 for bilateral liberation is discontinuous, since it occurs only when the lining 38 of the liberation drum 33 rests on the upper liberation cylinder 32 and was a leaf or. half driven through a pair of cylinders for the compression line 30 and onto the liner 38.

Layer drum

With reference to FIG. 11, the release drum 33 includes a rectangular lateral groove 36 comprising a conventional gripper 37 sheets, respectively. pole for grabbing leaves or. poles, which are guided by a pair of cylinders for the line of compression 30. This portion of each sheet respectively. a sheet that matches the gripper of 37 sheets or. semi, will not be available for priming or LAB.

The surface (not numbered) of the release drum 33 is covered by the liner 38 for less than half its circumference.

Upper Liberation System

The upper release system 16 includes an upper measuring cylinder 31 and an upper release cylinder 32 in a position above the leaf or pole path. The upper release cylinder 32 cooperates with the coating roller 33 to form a release line (not numbered). The layering drum 33 and the upper release roller 32 are in such a position that the upper release roller 32 forms a press line with the release drum 33 only when the lining 38 is adjacent to the upper release drum 32.

The upper trough holding the primate stock is formed by the surfaces of the upper measuring cylinder 31 and the upper relief cylinder 32 and a pair of opposite end walls (not shown) which are joined by grooves (not shown) at the ends (not numbered). ) cylinders 31 and 32. During the rotation of the cylinders 31 and 32, the base material in the upper trough 3 lt forms a film on the upper relief cylinder 32 for transfer to the sheet or roll. polo passing under the upper release cylinder 32 onto the coating 38 of the release drum 33. The thickness of the film coating (not shown) on the upper release cylinder 32 and thereby the amount of primer applied to the sheet or sheet. polo, depends on the viscosity of the primer and the contact pressure between the upper measuring roller 31 and the upper release roller 32. For the given primer material, it is possible to adjust the thickness of the base layer on the sheet or. by moving the upper measuring roller 31 relative to the upper releasing roller 32 and adjusting the rotational speed of the upper measuring roller 31. In Fig. 10, the base material 31t is fed into the upper trough 31t with laterally arranged upper nozzles 40 to receive the base coating material from the supply the tank 41 by means of a pump 42. The upper trough 3 lt also has overflow outlets 43 through which excess primer material returns to the supply tank 41 for this material.

Lower release system

The lower dewaxing system 17 is essentially a mirror image of the upper dewaxing system 16 in a position below the leaf or pole path. The lower release system 17 includes a lower measuring cylinder 34 and a lower release cylinder 35 in a position above the leaf or pole path. The lower release cylinder 35 cooperates with the release drum 33 to form a release line (not numbered). The lining drum 33 and the lower relief cylinder 35 are in such a mutual position that the lower relief cylinder 35 forms a release gripper with the release drum 33 only when the lining 38 is adjacent to the lower release cylinder 35. The lower trough 34t which holds the LAB stock is yours with surfaces of lower measuring cylinder 34 and lower relief cylinder 35 and pairs of opposite end walls (not shown) which are clamped with grooves (not shown) at ends (not numbered) of reels 34 and 35. When reels 34 and 35 rotate, forming the LAB material in the lower trough 34t a film on the lower release roll 35 for transfer to a sheet or pole passing through the lower release roll 35 to the cover of the release drum 33.

The thickness of the LAB film (not shown) on the lower release roll 35, and thus the amount of LAB layer on the sheet or. poly, depends on the viscosity of the LAB and the contact pressure between the lower measuring roller 34 and the lower release roller 35. For a given LAB value, the thickness of the LAB layer on the sheet or the The poles can be adjusted by moving the lower measuring cylinder 34 with respect to the lower release cylinder 35 and adjusting the rotational speed of the measuring cylinder 34.

Referring to Figure 10, we supply the lower trough 34t with LAB with laterally disposed lower nozzles 45 receiving the LAB from the supply tank 46 by means of a pump 47. The lower trough 34t also has overflow outlets 48 through which the excess LAB returns to the supply tank 46 for the LAB .

Leaves or. the sheets are optionally pre-printed with messages. In order for the messages to be presented on the front surface or. the leaf surface in blocks (not shown), the messages must be printed on the main leaf surface or. poles released by LAB. So, if pre-printed sheets or sheets are released in stage 3 for double-sided release, the printed messages will be covered with a LAB affixed to the sheet or paper. polo with a lower emulsion system 17. In this way, the LAB serves to protect the printed matter, especially against its removal with adhesive suspended on the immediately preceding sheet in the stack. Such protection provided by LAB release enables the use of stronger adhesives on blocks of pre-printed sheets. Of course, it is also possible to apply printed messages to sheets even after the output of grade 3 sheets for duplexing using conventional printing techniques.

Scraper for screening sheets pole

The scrapers for sheets or sheets (not shown) are located downwards with respect to the upper roller roller 32 and the lower roller roller 35 as well as to the roller drum 33 to ensure that the rollers or rollers. the sheets do not wrap around cylinders 32, 35 or drum 33, but originate from stage 3 for double-sided release and advance toward stage 4 for the spacing of the leaves, respectively. pol.

Alternatively, as shown in Figure 12, at step 3, both layers could be applied with a base coat and LAB sequentially instead of simultaneously, at both levels. For example, the release drum 33 and the upper release system 16 are removed in an upward position relative to the lower release system 17. Each of the upper release cylinders and the lower release cylinder 35 is provided with a counter pressure cylinder 32c or. 35c. However, such an alternative method does not offer the advantages associated with the simultaneous release process described herein. It is worth noting that the alternative embodiment shown in Figure 12 also shows the supply troughs 3 lt and 34t for feeding the base layer material and the LAB material into the upper measuring cylinder 31 or. lower measuring cylinder 34.

Lining and support pole.

The liner 38 on the release drum 33 may be made of any suitable material type. Preferred materials are various elastomy materials such as natural and synthetic rubbers. The lining 38 is fixed by adhesive (not shown) to the support pole 38a, which is wrapped around and removably fastened to the release drum 33. Suitable materials for use as a support pole 38a include various flexible inserts. synthetic substances such as Mylar ™ (Reg. Trademark). The liner 38 may be attached to a neoprene adhesive support 38a, available under the commercial code 1236 ™ (Reg. Trademark) of the Minnesota Mining Manufacturing Company, St. Paul, Minnesota, USA. The support pole 38a extends preferably around the entire circumference of the release drum 33, with the ends (not numbered) of the support pole 38a extending downward into the groove 36 of the roll on the release drum 33. The support pole 38a may be detachably attached to the release drum with any suitable accessory. such as bolts or machine screws (not shown). In this way, the lining 38, which is a wearable element, is securely attached to the release drum 33, but can be easily removed from the release drum 33 and, if necessary, replaced.

If necessary, the lining 38 is glued to the support pole 38a while the support pole 38a is flat, it is advantageous to use flexible adhesive to attach the lining 38 to the pole 38a. Obviously, the adhesive flexibility is less important when the liner 38 is attached to the support pole 38a only after the support pole 38a has been adapted to the shape of the release drum 33. Any primal adhesive can be used to attach the liner 38 to the support pole 38a, provided that the adhesive is strong enough. to prevent receding or raising the corners of the lining 38 from the support pole 38a during the life of the lining 38.

The liner 38 can be made from Cyrell ™ (Reg. Trademark), a polyurethane material from E. I. DuPont de Nemours, Wilmington, Delavvare, USA.

Primer ("Primer")

This may be, for example, an aqueous solution of an organic binder or a crushed or ground binder. floating mineral pigment. More specifically, the primer may be obtained by mixing about 3 to 7 wt. % of MOWIOL ™ (Reg. Trademark) binder by Hoechst AG, Frankfurt / Main, Germany, and about 3 to 8 wt. % of AEROSIL ™ (Reg. Trademark) pigment by Deguss AG, Frankfurt / Main, Germany, in water.

The characteristic mass of the primer for the release of the leaves or. the pole is about 0.5 g / m to about 12.0 g / m ² . The priming masses of the primer and the LAB are preferably aligned so that the two main surfaces of each sheet or. the sheets are dried at about the same speed, thus reducing the wrinkling and swirling that is usually associated with the drying of wet leaves or. pol.

Low adhesion adhesive fLAB = Low Adhesion Backsize))

LABs can be selected from, but are not limited to, acrylate copolymers, silicones, urethanes and fluoropolymers. For example, LAB may be selected from the aqueous LAB solutions described in EP-A-0618509. Other LAB materials used include those described in U.S. Pat. No. 5,202,190 and 5,032,460. Typical LAB release mass on leaves or the sheet is about 0.5 to about 12.0 g / m ² . Again, the primers and LAB are preferably matched so that the two main surfaces of each sheet or sheet are dried at about the same speed, thus reducing the wrinkling and twisting typically associated with the drying of the wet sheets or sheets. pol.

LEVEL OF DISTANCE OF SHEETS OZ. POL

As shown in Fig. 1 and in more detail in Figures 8 and 9, the leaves respectively pole after exit from stage 3 for double release to stage 4 for spacing of leaves or. the pole in which the coupling unit 50 is arranged so as to grab the two-leafed leaves, respectively. the poles as they emerge from the release gripper and dispose of them on the second conveyor 51 shown in Figure 8. The coupling unit 50 is a conventional unit including a coupler 52 carried by an endless chain 53. The movement of the chain 53 is synchronized by rotation of the release drum 33 such that the stapler 52 is in such a position that it accepts each of the two-sided leaves or sheets. polo as it leaves the release gripper.

Referring to FIG. 8, the blower 54 is positioned below the leaf path near the outlet side of the release gripper to provide an air cushion behind the leaf support, or. when the stapler 52 carries them against another conveyor 51. The blower 54 includes a heater (not shown) which partially dries the LAB release on the underside of the leaf or. sheet before it is deposited on another conveyor 51. This reduces the tendency of the two-leafed leaves, respectively. half to attach to another conveyor 51.

The second conveyor 51 runs at a lower speed than the chain 53 of the clamping unit 50. This causes the guide portion of the edge of each sheet or. the sheet deposited on the second conveyor 51 covers the drawn portion of the edge of the previous sheet, or. box 22 and forms a pseudo-roll of overlapping leaves, respectively. pol. Typically, but not significantly, the extent of overlap is between about 1 and 2 cm. Alternatively, the second conveyor 51 may run at substantially the same speed as the chain 53 of the coupling unit 50. This maintains the gap between the leaves or the conveyor. poles deposited on another conveyor 51. Such arrangement of leaves or. semi allows individual drying of leaves or. pole in stage 5 for drying, thus avoiding the consequences of drying the partially overlapping leaves or poles.

The second conveyor 51 is preferably a vacuum conveyor connected to the source 55 of the vacuum. The suction effect created by the source 55, the pressure maintains the leaves or. poles in position on the second conveyor 51 to maintain the required overlapping ratio between the sheets or polami.

A single unit combining Level 3 for double-sided release and Level 4 for leaf spacing and semi, is commercially available from Billhofer Maschinenfabrik GmbH, Niimberg, Germany, under the designation Gulla Speed GS GS 8000 ™.

OVERLOOK DIRECTION SYSTEM

As shown in Fig. 13, the leaves, respectively. the poles on the second conveyor 51 transferred to the third conveyor 56 for transport through the dryer 5. Between the second conveyor 51 and the third conveyor 56, a system (not numbered) is provided to circumvent the position of overlapping of the leaves or. half when they became covered in stage 4 for leaf spacing or. pol. The system includes (i) an air knife 60 in a position below the leaf path and, inter alia, a conveyor 51 and a third conveyor 56 for raising the overlapping portions of the leaf edges, respectively. half as they pass over the air knife 60, and (ii) a stationary vacuum cylinder 61 in a position above the leaf path and slightly downward from the air knife 60, to engage and temporarily hold the return of the lifted drawn portion of the leaf edge, or. pole. The system thus causes the leading edge of each leaf to return. the sheet to the path of the sheet before returning the part of the drawn edge of the previous sheet or. box 22 so as to obscure the overlapping union of each set of overlapping sheets, respectively. pol.

Vacuum cylinder 61 has closed ends 62 and more openings 63 through that portion of the surface of the vacuum cylinder (not numbered) directed toward the air blade 60. The remainder of the vacuum cylinder 61 is closed. The openings 63 are connected to the hollow interior (not shown) of the vacuum cylinder 61, and the hollow interior is connected to the vacuum pump 66 by conduit 67.

Vacuum cylinder 61 can conveniently have a diameter of about 15 cm, with three rows of openings 63 spaced 30 mm apart. The openings 63 may conveniently have a diameter of 6 mm, with the individual openings 63 in each row spaced 30 mm apart.

Because the suction force exerted by the vacuum cylinder 61 does not affect the leaves or the. poles while in the plane of the leaves respectively. half, the vacuum can be kept constant. A sufficiently high vacuum must be applied to ensure that the trailing edge of the leaf or the drawn edge is retained and retained. pole in raised condition with an air blade 60 without disturbing the continuous advancement of the leaf or the blade. poles on the third conveyor 56.

It is optionally possible to mount a deflection plate 68 above the vacuum cylinder 61 and the air knife 60, as shown in Figure 13, to direct the air jet emanating from the air knife 60 towards the vacuum cylinder 61.

We can also use other systems to circumvent the sequence of overlapping leaves or. a pole such as an air knife 60 itself or a mechanical arrangement similar to that inscribed in GB-A2 166 717. However, such systems would not offer the same efficiency and reliability as the system described in the present invention.

DRYER (DRY RATE)

Referring back to Figure 1, we see that the pseudo-roll of the overlapping leaves or semi-transported with the third conveyor 56 from step 4 for the spacing of leaves or. half and through the dryer 5, where moisture is removed from the basic and LAB release on the leaves or. polah. We move the overlapping sheets continuously through the dryer 5 with the third conveyor 56 and dry them at such a speed as to soften and / or soften. eliminate the risk of leaf bending without unduly slowing the line speed or requiring an excessively large dryer 5.

Dryer 5 preferably uses a radio frequency dryer for drying the basic and LAB dehumidification. A suitable dryer is model no. SP 890 GF “C” -AG, supplied by Proctor Strayfield Ltd., Berkshire, England, GB, tailored to fit this specific system. The use of a radio drier is preferred but not essential. The overlapping sheets, respectively. the sheets could instead be dried using infrared heating systems or forced air circulation. Alternatively, a third conveyor could be heated 56. However, a radio frequency dryer is preferred for many reasons, including its simplicity, low energy consumption, reduced heat accumulation, etc.

The dryer 5 is equipped with a control unit (not shown) to automatically adjust the power of the dryer according to the line speed of the system. A suitable control unit is available from Siemens under the PLC 55 95U code. The control unit may be connected to a central electronic control unit (not shown) for the whole system in order to transmit and receive the information necessary to properly control and control the system. Although it is preferable to reverse the direction of the overlap before the leaves or. sheets enter the dryer 5 to reduce the possibility of leaves or the poles raised from the third conveyor 56, it is possible to reverse the direction of overlap after the leaves are already dried, by adjusting the stage 4 for the spacing of the leaves or. half downstream of the dryer 5 as shown in Figure 3.

LEADING LEADING LEVEL OF OZ. POL

As shown in Figure 1, transfer the dried and dewatered leaves. the sheet from the third conveyor 56 to step 6 for guiding the sheets, or the pole in which the sheets on the side are registered and aligned with one another, thus being prepared to advance through step 7 to transfer the adhesive.

LEVEL FOR COVERING LISTS OF OZ. POL

As shown in Figure 3, in the individual guidance of the leaves through the dryer 5, a level 8 is provided to cover the sheets between the dryer 5 and a level 7 to transfer the adhesive, to cover the sheets, or. half before they enter Level 7 to transfer glue. Level 8 for the transfer of adhesive comprises a pair of input rollers 110, which take over the sheets, respectively. sheets protruding from the dryer 5 and keeping the leaves and / or leaves. poles between a pair of drive cylinders 111. The drive cylinders 111 transport the sheets or rolls. the pole into the lever 112. The lever 112 oscillates during the first position, as shown in Fig. 3, where the lever 112 extends into the leaf path and stops the progression of each leaf, respectively. a pole that comes into contact with the lever 112, and another position where the lever 112 is in a position below the leaf path and allows any accumulated leaf or progression to advance. poly in the direction of level 7 for the transfer of adhesive.

The drive cylinders can oscillate between the open position and the closed position in response to the position of the lever 112. The drive cylinders 111 open when the lever 112 is turned to the first position so that the leaf or roll. the pole emanating from the input cylinders 110 freely passed between the driving cylinders 111 and will be paused at the lever 112. When the lever 112 swings to a different position below the leaf path, the driving cylinders 111 close and form a compression line that throws the leaf or. polo, resting on the drive rollers 111, against the output rollers 113. When the sheet or. the pole is taken over by the output cylinders 113, the lever 112 is reversed to the first position, and the driving cylinders 111 are opened to allow the next sheet, respectively. poly 23 from the inlet cylinders 110 passes through the lever 112 until the next sheet or. pole 23 does not hit lever 112.

As shown in Figure 3, the lever 112 returns to the first position while being part of the previous sheet, or. the pole 22 is still in position above the lever 112, so that the lever 112 lifts the drawn portion of the edge of the previous leaf out of the leaf path. pole 22. The lever 112 is then pivoted to the second position and the drive rolls 111 are closed while the trailing portion of the edge of the previous sheet or. the pole 22 is still above the lever 112, so that the drawn part of the edge of the previous sheet or. box 22 covers the leading part of the edge of the next sheet, respectively. box 23. Typically, an overlap of about 1 to 2 cm is sufficient to ensure that the complete pseudo-roll of the overlapping leaves or the semi transported to stage 7 to transfer adhesive.

It should be borne in mind that the specific grade 8 for leaf overlap or. the pole we describe here for the production of a pseudo-roll of leaves, respectively. gender is not an essential feature of the whole system and that any other mechanism capable of forming the same, overlapping arrangement of leaves and / or leaflets could be used. pol.

ADHESIVE TRANSFER RATE

Registered overlapping sheets or. the poles pass through the transfer stage 70, where they come into contact with the endless conveyor belt 71, which was previously applied with adhesive release (not shown) in the form of numerous strips 236, extending longitudinally along the conveyor belt 71.

Transfer belt

The conveyor belt 71 is wound around a series of tensioning rings 72, of which at least one is drive, so that the conveyor belt 71 advances in the direction of the arrow 73 and in the direction of the process 100 through the transfer site 70. The conveyor belt 71 is advancing at the same speed as the overlapping sheets or. sheets and passes (i) through the dewatering system 74, (ii) the adhesive dryer 75, and (iii) the transfer site 70.

The conveyor belt 71 may be made of a variety of materials, including a variety of metals and man-made. synsthetic substances covered with silicone rubber. The conveyor belt 71 is preferably made of radio-permeable material so that a radio frequency dryer 75 for adhesive can be used. As used herein, the term "radio frequency transmitters" means that the material does not react to a significant degree with radio frequency beams, so that the radiation passes through the material without mentioning the heat generation or evaporation of the material. A suitable radio frequency transmission band 71 comprises about 0.1 mm thick glass fiber fabric layer 22a coated on both main surfaces with about 0.15 mm thick silicon rubber layer.

One embodiment of the conveyor belt 71 is shown in cross-section in Figure 27. In this embodiment, the conveyor belt 71 includes a base layer 220a comprising a 0.01 cm thick fiberglass cloth strip commercially available from J.P. Steven, North Carolina, USA. The base layer 220a is suspended on the front 220b and rear 220c main surfaces with a 0.008 cm thick separating layer 220d and 220e, respectively. The extreme outer surfaces 220h and 220i of the separating layers 220d and 220e form a surface which receives the adhesive from the engraving reel 77 and transfers the adhesive to the overlapping sheets or sheets. the pole at the transmission site 70. The combination of the base layer 220a and the separation layers 220d and 220e gives a conveyor belt 71 with a total thickness of about 0.025 cm. A suitable material for use in the formation of separation layers 220d and 222e is the dispersion of a silicone rubber solution available from Silicon Products Division General Electric Co., Waterford, New York, USA, under the designation G.E. SE-100. The solution contains 6 wt. % solids with 78% solution of benzoyl peroxide in water as catalyst.

The separating layers 220d and 220e may be molded by means of imaging knives of the desired material over the base layer 220a and dried in an oven at 182 ° C at a speed of 55 m / h. The separation layers 220 d and 220e make it easy to separate the adhesive from the conveyor belt 71 into the overlapping sheets or sheets. the pole at the transmission site 70.

The extreme outer surfaces 220h and 220i of the separating layers 220d and 220e may be smooth or textured, but preferably textured or wrinkled, in order to further facilitate the separation of adhesive from transfer belt 71 into overlapping sheets or sheets. pole. Most preferably, the outer surfaces 220h and 220i are textured with a notch pattern. recesses that cause a complementary pattern in adhesive tapes 236 transferred from transfer tape 71 to overlapping sheets of paper at transfer site 70.

A preferred notch pattern is shown in Figure 28. The pattern generally comprises an arrangement of notches 220j formed from the corresponding notches 220g in the base layer 220a. The notches 220g in the base layer 220a may be formed during the fiberglass weaving process. Alternatively, the sample 220g in the base layer 220a may be embossed or otherwise made on the extreme outer surfaces 220b and 220i of the separation layers 220d and 220e.

The notches 220j at the extreme outer surface of the separating layers 220d and 220e have (i) a preferred width of about 40 to 200 pm, more preferably a width of about 100 pm and (ii) a preferred depth of about 50 to 100 pm. The 220j notches are preferably spaced 10 to 30 pm in the correct arrangement. Such patterns on the extreme outer surfaces 220h and 220i of the separating layers 220d and 220e are particularly useful when applying adhesive with pressure sensitive microcapsules (microspheres). We think that adhesives with microcapsules like to "flow" from the extreme outer surfaces 220h and 220i of the separation layers 220d and 220e, while the microcapsules in the adhesive composition like to gravitate towards each notch 220j and stay there. As a result, adhesives that are transferred to the overlapping sheets or sheets tend to tend. pole, to preserve the surface pattern shown in Figure 28, with a consequent even distribution of the microcapsules and improved adhesion.

Preferably, the front separation layer 220d and the rear separation layer 220e are equally thick and of the same size, shape and notch 220j, so that the adhesive can be applied to either the extreme front surface 220h or the extreme rear (back) surface 220i of the conveyor belt 71 , as necessary to extend the life of the conveyor belt 71 without altering the characteristics of the adhesive tapes 236 that are transferred to the overlapping sheets at the transfer site 70. Of course, we can optionally use a conveyor belt 71 with a separation layer 220d or 220e on a single main surface 220b or 220c.

If an engraving reel 77 is used to apply adhesive tapes 236 to the conveyor belt 71 as described above, the engraving pattern further affects the adhesive stripe pattern 236. It is therefore necessary to select both the engraving reel 77 and the conveyor belt 71 in such a way that to improve the even distribution of the microcapsules in adhesive tape 236 applied to the sheets and / or pole.

Alternatively, other arrangements may be used, including, for example, a cylindrical drum (not shown) in contact with an engraving reel 77 and a leaf path. It is to be understood, therefore, that the intermediate carrier will hereinafter be referred to as conveyor belt 71, but the present invention is not limited thereto.

Portable adhesive release system

The adhesive laminating system 74 applies at least one elongated strip 236 to pressure sensitive adhesive on the transfer surface 76 of the conveyor belt 71. The adhesive laminating system 74 may have a number of convenient release devices, including, for example, an anti-roll rotary disc 77 with engravings, as shown in FIG. 15, or the release matrix 242, as shown in Figures 25 and 26.

Engraving disc

The engraving roll 77 is in contact with the conveyor belt 71 practically the entire width (not shown) of the roll 71. The engraving roll 77 includes at least one engraving ring 77r formed by several cells or cavities 230 extending about the entire circumference of the roll. 77 with engravings, at the desired location of adhesive tape 236 on conveyor belt 71.

If the engraving reel 77 rotates in the same direction as the conveyor belt 71, we denote the procedure in

transfer of adhesive as a direct engraving process. However, if the engraving reel 77 rotates in the reverse rotation as a conveyor belt 71, we refer to the adhesive transfer process as an anti-seismic engraving release process. Although any of the two distributions can be used in the present invention, the procedure shown and described in the present description is based on an anti-seismic engraving method - unless otherwise specified. Typically, the engraving reel 77 rotates in the same direction and at about the same speed as the conveyor belt 71, so that the adhesive release system 74 acts as an anti-seismic engraving process.

Fig. 22 shows three engraving rings 77r, applying three longitudinal adhesive tapes 236 to the conveyor belt 71. An enlarged outline of the surface of the engraving rings 77r showing individual cells 230 in engraving rings 77 is shown in Fig. 24. As can be seen , each cell 230 generally has the shape of an inverted truncated pyramid. Typically, there are about twenty-four sample lines 230A of cells 230 per 1 cm of length 77r with engraving. The specific engraving pattern shown in Figure 24 is irrelevant and can be altered if desired to vary the distribution of the adhesive within the adhesive tapes 236. Alternatively, depending on the intended use with the adhesive of the dried leaves or. half, we apply adhesive-transfer adhesive over the entire width of the conveyor belt 71, rather than in individual lines 236.

The adhesive tray 80 is in a position directly below the engraving roll 77 to feed the surface of the measuring roller 81, which then transfers the adhesive to the rotating engraving roll 77. The adhesive is fed into the adhesive tank 80 from the adhesive supply tank 79 with the pump 78. Alternatively, the measuring cylinder 81 may also be removed and the engraving roller 77 may be removed in direct contact with the adhesive in the adhesive tank 80.

One or more imaging knives 82 extend into the surface of the engraving reel 77 to remove any excess adhesive from the engraving reel 77 and ensure that the only glue contained in the engraving reel 77 is one or more of them ring (s) 77r with engraving. This ensures that the adhesive will be applied to the conveyor belt 71 in the form of elongated strips 236. When using an anti-seismic engraving process, the uniformity of the adhesive strips 236 applied to the overlapping sheets and / or sheets can be improved. non-numbered sheets by smoothing the adhesive layer applied to the rings 77r by engraving before transferring the adhesive to the conveyor belt 71. As shown in FIGS. 22 and 23, the adhesive layer on the roll 77 may be smoothed with the smoothing strips 229 placed near the engraving roll 77 to attach the adhesive applied to the engraving rings 77r during transfer of the adhesive to the engraving roll 77 from the measuring roll 81 to the transfer belt 71. The smoothing strips 229 can be rotated relative to the engraving roll 77, applied to the rings 77r by engraving before the adhesive is transferred to the conveyor belt 71. The smoothing strips 229 are preferably made of a resilient polymeric material and most specifically a polyester strap about 0.0011 cm thick.

For some applications, smoothing the adhesive applied to the reel 77 with an engraving prior to applying the adhesive to the conveyor belt 71 may improve the distribution of the microcapsules applied in the transferable microcapsules adhesive. In other words, this means that when the coated adhesive with microcapsules is applied to the overlapping sheets or. poles, the uniformity of the exposed surface of adhesive tapes 236 is improved, with a favorable effect, to obtain adhesive tapes 236 which offer greater control and uniform adhesion force.

Matrix Layer

Level 7 for the transfer of adhesive shown in Figure 25 shows the use of the release matrix 242 to apply pressure to the sensitive adhesive on the transfer belt 71. Each release matrix 242 has a matrix slot (not shown) that is directed toward the transfer belt 71, through which adhesive tape 236 is applied to the conveyor belt 71. As shown in Figure 26, several release mats 242 are spaced along the length of the transfer belt 71 and in the desired positions on the adhesive tapes 236. Each release matrix 242 has a suitable adhesive supply line 245 and an accompanying pump 246 and a filter 247 through which the adhesive is fed into the release matrix 242 from the adhesive tank 248. Alternatively, a single release matrix 242 may be present with a split adhesive slot in several separate locations along the width of the conveyor belt 71.

The speed at which the adhesive is applied to the conveyor belt 71 can be easily adjusted by varying the speed of operation of the pumps 246, which otherwise operate under the control of the central electronic control unit (not shown) of the device, depending on the line speed of the device.

Coating with the adhesive tape matrix 236 increases the flexibility of the coating process because it allows for the quick and easy adjustment of the location of the coating heads 242 with respect to the transfer belt 71.

Alternatively - as shown in Fig. 19 - there are overlapping leaves, respectively. poles (not numbered) may be arranged to provide a relatively small length of surface exposed by adhesive-coated conveyor belt 71 and adhesive-coated adhesive system 74 in configuration and arrangement for the release of the entire length and width of the transmission surface 76. In this case, however, by predicting a significant overlap between adjacent sheets or. flames, as shown in Fig. 19, each sheet or. pole coated with glue along the narrow border 99, along only one edge of the sheet or. pole. Lists or. the sheets can then be folded to form a block, with the leaves or. Adhere the sheet along the edge 99 adhered with glue.

Levil dryer

The adhesive coating (not shown) on the conveyor belt 71 is at least partially dried by the adhesive dryer 75. For example, the moisture content of suitable aqueous adhesives is typically between about 50 and 80% by weight. % when applied and preferably dried with an adhesive dryer 75 to a moisture content between about 0 m and 50 wt. %. Preferably, substantially all moisture will be removed during the drying process. The dried glue adheres better to the overlapping layers, or. pol.

Adhesive dryer 75 is preferably a radio frequency dryer, for example a specifically adapted version of model no. SPW 12-73 by Proctor Strayfield Ltd., Berkshire, England, GB, operating typically at about 27 MHz, or alternatively at about 30 MHz. The adhesive dryer 75 is approximately 2.5 m long in the travel direction of the conveyor belt 71 and has an exhaust (not shown) through which the interior of the adhesive dryer 75 is vented by means of an exhaust fan 84.

The adhesive dryer 75 is equipped with a control unit (not shown) to adjust the power of the adhesive dryer 75 according to the line speed of the dispenser. This control unit may be, for example, the Siemens PLC 55-95U, which is connected to a central electronic control unit for all preparation. The use of a radio frequency dryer 75 for adhesive allows drying of the adhesive without mentioning the heat of the conveyor belt 71. This eliminates unwanted heat transfer from the conveyor belt 71 to the adhesive system 74, where it would tend to coagulate the adhesive before it could be applied to the conveyor belt. 71. The use of a radio frequency dryer 75 for adhesive also offers the advantage of relative simplicity and lower energy consumption. Further, the adhesive transfer stage 7 does not have any long-term preheating and the adhesive is easily separated from the transfer belt 71 on the overlapping sheets at the transfer site 70.

The use of a radio frequency dryer 75 for adhesive is preferred but not essential. Alternatively, the adhesive could be dried using infrared heating systems or forced air circulation systems. However, for many reasons, we prefer the radio frequency dryer, including its simplicity, lower power consumption, reduced heat accumulation, etc. In addition, in case the adhesive dryer 75 would significantly heat the conveyor belt 71, a cooling system (not shown) should be installed in the adhesive transfer stage 7 in order to cool the adhesive conveyor belt 71 and thereby reduce risk of adhesive coagulation.

The adhesive dryer 75 is equipped with a control unit (not shown) to automatically adjust the power of the adhesive dryer 75 according to the transmission line speed 71. A suitable control unit is available from Siemens under PLC 55 95U. The control unit may, however, be connected to a central electronic control unit for the whole system in order to transmit and receive the information necessary for the proper control and control of the operation of the system.

The dried release of the adhesive is then transported to the transfer site 70, where the adhesive is transferred from the transfer belt 71 onto the overlapping sheets, respectively. pole.

Place of transfer

The drive pulley 90 and the free counter pulley 91 form grips 85 for carrying out the transfer at the transfer site 70. Adhesive tape 71 and a series of overlapping sheets respectively. half pass through the grips 85 for carrying out the transfer, where the dried adhesive on the conveyor belt 71 is transferred to the first main surface of the overlapping sheets, respectively. half, due to the greater bonding force between the adhesive and the overlapping sheets or. poles compared to the bonding force between the adhesive and the conveyor belt 71.

As shown in Figure 16, a free counterbalance roller 91 is provided with a plurality of laterally spaced circumferential grooves 92 and a plurality of fingers 93 positioned downstream of the freewheel roller 91 and extending into the grooves 92 to ensure that there is overlap leaves or. the poles 86 continue to the conveyor belt path 71 after leaving the transmission 70 and not wrapping around the free counterbalance roll 91.

Vacuum tape

As shown in Figure 16, we remove the overlapping sheets or the overlaps. pole 86 of transmission belt 71, after leaving transmission site 70, with vacuum strip 95. Removing overlapping sheets or plates. pole 86 of the conveyor belt 71 is facilitated by the fact that the drawn part of the edge of each sheet lies between the leading part of the edge of the next sheet, or. pole 23 and conveyor belt 71. This facilitates the initiation of the removal process, since the removal of the drawn part will be the edge of each sheet, or. the sheet inherently caused the leading edge of the next sheet to be pulled. pole 23 of transmission belt 71.

Vacuum Tape 95 can be selected from many commercially available types and styles, such as the system available from Honeycomb Systems Valmet S. a. r. 1st, Mulhouse, France, combining a metal strip drawn around and surrounding a vacuum reel at the leading edge of a metal strip. An additional roller 97 is provided between the drive roller 90 and the extreme lower (downward) tensioning roller 72 to engage inside the transmission belt 71 downstream of the front end (not numbered) of the vacuum roller 95. An additional roller 97 is mounted with respect to to the drive cylinder 90 and the downward rolling roller 72 so that the transfer belt 71 is angled from the front end of the vacuum strip 95 at a small angle about two to three degrees upstream of the additional cylinder 97, and thereafter it moves away from vacuum strip 95 at a greater angle of about five degrees. More specifically, the conveyor belt 71 should move away from the vacuum strip 95 at an angle of about two to three degrees at a distance of about 50 mm to allow the suction force exerted by the vacuum strip 95 to attract and remove overlapping sheets, or. half from the conveyor belt 71, and then at an angle of about five degrees, to increase the distance between the conveyor belt 71 and the leaves, respectively. adhesive-free sheets. The additional cylinder 97 is preferably movable between the first and second positions, which is generally indicated by a pivot line 97p to allow adjustment of the start and end angles between the transfer belt 71 and the vacuum strip 95 as necessary to improve the operation of the process to the greatest extent possible.

With reference to Figures 17 and 18, there is a vacuum strip 95 on the vacuum container 94, which is connected to the low pressure source (not shown). The vacuum container 94 is distributed into the front space 94a and the rear space 94b, with the front space 94a connected to the first low pressure source (not shown) and the rear space 94b connected to the second low pressure source (not shown). The first low pressure source is pulled by a vacuum larger than the vacuum drawn by the second low pressure source. The larger vacuum drawn by the front compartment 94a facilitates the removal of the leaves or glue by adhesive. half from the conveyor belt 71 while the leaves respectively. the poles originate from the transfer site 70. To further facilitate the larger initial suction effect required on vacuum strip 95, the openings 94x on the top (not numbered) of the front space 94a are larger than the openings 94y that are in the rear space 94 b.

Vacuum strip 95 also includes multiple openings 98 so that the reduced pressure exerted on the back (not numbered) of the vacuum strip 95 will communicate through the top of the vacuum container 94 with the vacuum strip 95 and react with each leaf or leaf. the polo to be located on the upper surface of the vacuum strip 95. The reduced pressure exerted by the low pressure source through the vacuum strip 95 is relatively strong over the initial length (not numbered) of the vacuum strip 95 and then reduced by the remaining length of the tape 95. The initial vacuum must be sufficient to peel off the overlapping leaves. pole and the accompanying adhesive tapes from the conveyor belt 71 without damaging the leaves or pol. Once the overlapping leaves or. the sheets and the accompanying adhesive are detached from the conveyor belt 71, only vacuum is required to maintain the peeled sheets or sheets. vacuum strip 95. Although the levels of acceptable and optimally reduced pressure depend on many factors, including the specific type of adhesive applied and the material characteristics of the dewatered leaves and / or materials. half, an initial reduced pressure in the range of 3430 to 5390 Pa (350 to 550 mm H ₂ O), typically 3920 Pa (400 mm H ₂ O), will be generally acceptable, with a generally acceptable reduced pressure in the remainder of the process. range 1470 to 1960 Pa (150 to 200 mm H ₂ O).

Vacuum strip 95 may be configured as a single strip covering the entire width of the vacuum container 94, or several narrower straps, affixed substantially across the width of the vacuum container 94.

Once removed from vacuum container 95, the leaves or the fold the sheets and trim them to form blocks. inserts from transferable sheets or. gender, such as those available under the Post-It® (Reg. Trademark) label of Minnesota Mining and Manufacturing Company, St. Paul, Minnesota, USA. Specific leaf removal system. the pole described here and shown in Figures 15 and 16 is irrelevant and can be replaced by other suitable systems, such as (i) mechanical grippers (not shown), (ii) vacuum cylinder 239 for peeling overlapping sheets, or . half of the conveyor belt 71 in combination with a separate standard conveyor 96 for the transport of peeled sheets or sheets. half to the desired location as shown in Figures 21 and 25, or (iii) vacuum cylinder 239 in combination with a separate vacuum strip 95. However, such different systems would not offer the advantages associated with the system described herein, and we illustrate in Figures 15 and 16.

The leaf removal systems described herein. the pole could also be used with other leaf release preparations. except for the specific preparation described here.

Glue

The adhesive can be basically any pressure sensitive adhesive. In the manufacture of portable message sheets, such as Post-It® (Reg. Trademark) sheets, the adhesive is preferably both pressure-sensitive microcapsules for transfer, as described in, for example, US Patent Nos. 5,045,569; 4,495,318; 4,166,152; 3,857,731; No. 3,691,140, reissued 24,906, and European Patent Publication 439,941. Other suitable adhesives include known film-forming materials, including those containing organic solvents.

STAGE FOR STORING OZ SHEETS. POL

As shown in Figure 5, it is transported with the adhesive of the loose leaf or. sheets (not numbered) leaving stage 7 for transfer of glue to stage 9 for storing sheets or sheets.

pole, where the adhesive leaves or leaves released. The sheets are stored in stack 140 and prepared for cutting into blocks of sheets of the desired format and shape.

SECOND STAGE FOR INSERTING OZ SHEETS. SEX (SECOND

INSTALLER)

As shown in Fig. 5, the second insert is 150 sheets, respectively. the pole can be in the position between level 7 for adhesive release and level 9 for leaf or leaf storage. half, for periodic insertion of leaves or. half, such as the back leaves or. sheets, on the path of paper advance just before storing the sheets or paper. pol.

LISTI OZ. POLE v

Although the preparation has been described in relation to the release of sheets of paper, the preparation is capable of releasing sheets or paper. semi-made of other materials such as polymer films and metal foils.

Optionally, we can use papers of different formats, masses and textures. For example, the described preparation is easily customizable for handling A2 and A4 paper. Similarly, the preparation is suitable for the handling of the leaves or. half with relatively high mass (for example 90 g / m) as well as leaves or low weight pole (for example 70 g / m).

Operation

LEVEL FOR INTRODUCING LISTS OF OZ. POL (ADAPTER)

The suction head 12 lifts the back edge (not numbered) of the top sheet or. non-numbered sheet) from stack 11, and moves the raised sheet, respectively. polo on. The movement of the lifted leaf or. the sheet is supported by an air jet from a nozzle 12 a. Raised sheet or. the polo is then taken over by the steam feed rollers 13 and transported from the feeder stage 1 (hopper) and to the first conveyor 14. The suction head 12 returns to its original position, picks up the next sheet or. polo and introduces the following sheet respectively. polo in steam feed rollers 13, spinning the first sheet or. pole fully guided between the steam feed rollers 13. In this way, the drawn edge (not shown) of each sheet or. the sheet covers the leading end (not shown) of the next sheet or. sheet 23 as the leaves pass between the steam feed rollers 13 and are introduced to the first conveyor 14. When stack height 11 is reduced, table 10 moves upward to maintain the stack (not numbered) stack 11 in a predetermined vertical position relative to the suction head 12.

40.

FIRST TRANSPORTER AND STOP DOOR

Lists or. poles emanating from a stack of 1 sheets or. pole, deposited on first conveyor 14 and transported to stop gate 15 at entry to stage 3 for double release. When each leaf or. the pole comes to a stop gate 15, its progression is paused, while the release drum 33 is rotated to the correct position for transport and release of the leaf or. pole. The stop door 15 is then opened to allow a single accumulated sheet or. poly entry into Level 3 for bilateral liberation. The stop door 15 is then closed before the arrival of the next sheet 23 and temporarily suspend the progress of that sheet, respectively. pole until the release drum 33 rotates again to the correct position.

DEGREE FOR BOTH SIDES

Stop Door 15 lowers the leaf, respectively. polo in stage 3 for double release in time dependence on the rotational position of the release drum 33, introducing a sheet or a. polo in stage 3 for double release at each turn of the release drum 33. The lining 38 on the release drum 33 comes into contact with the lower release cylinder 35 and is released by the LAB. When the lining 38 is released by the LAB, approaching the upper release cylinder 32, we keep a sheet or. polo through a pair of cylinders for the compression line 30 and the leading edge of the sheet, respectively. the pole grabs the gripper of 37 sheets or. pol. List or. the polo is passed through the line of distress formed between the upper roller roller and the liner 38 on the roller drum 33 and is coated with a primer on the first main surface. The force of the line compression also causes the transfer of the LAB release on the liner 38 to another larger (main) surface of the leaf or. pole. Leaf on either side the polo is then decided with a gripper of 37 sheets or. pole and remove from staple drum 33 with stapler 52. Repeat this operation for each sheet or sheet. polo introduced in Level 3 for mutual liberation. If no leaf is waiting at stop gate 15, determine this fact with a photocell (not shown) mounted at stop door 15 and move the upper release roller 32 away from the release drum 33 to prevent any mixing of the priming materials. and LAB.

LEVEL OF DISTANCE OF SHEETS OZ. POL

Leaves exiting Grade 3 for double-sided coating enter Grade 4 for leaf spacing or spacing. the pole where the coupling unit 50 is mounted to grab the two-leafed leaves, respectively. poles as they emerge from. and move them to another conveyor 51. The movement of the chain 53 is synchronized with the rotation of the release drum 33, so that the stapler 52 is in such a position that it accepts each double-leafed leaf, respectively. a polo as it leaves the release gripper. LAB release on the underside of the leaf or leaf. the sheet is partially dried with a heater (not shown) before being deposited on another conveyor 51.

The speed of the second conveyor 51 with respect to the line speed of the chain 53 of the coupling unit 50 determines whether the released leaves will be transported to the dryer 5 as single sheets or as a pseudo-roll of overlapping sheets or. pol. When the second conveyor 51 is operated at a lower speed than the chain 53 of the coupling unit 50, it overlaps the guide portion of the edge of each sheet or. pole drawn part of the edge of the previous sheet or. box 22 and forms a pseudo-roll of overlapping sheets or. pole on the second conveyor 51. When the second conveyor 51 operates at the same speed or faster than the chain 53 of the coupling unit 50, a gap will be maintained between the leaves or the conveyor. poles deposited on the second transportei 51.

ANTI-DISTRIBUTION SYSTEM

When we introduce lists or. sheets as a pseudo-roll of overlapping sheets or. half, adjust the air knife 60 in time to direct a single stream of air towards the overlapping portions of the edges of each pair of overlapping leaves, or poles 22 and 23. This occurs whenever the preceding sheet or. pole 22 just moved to 3 conveyor 56 and is the next sheet respectively. pole 23 has just started moving from another conveyor 51. An air jet emanating from the air knife 60 causes the drawn part to be raised to the edge of the previous sheet 22 and the leading portion to the edge of the next sheet or. box 23 from the path of the sheet or. pole, as shown by the dashed lines in Fig. 13. The drawn part of the edge of the preceding sheet 22 is influenced by the suction force originating from the vacuum cylinder 61, and is drawn towards the vacuum cylinder 61, where we hold the drawn part of the edge of the next sheet, respectively. pole 23 towards the surface of the vacuum cylinder 61, while the leading part of the edge of the next sheet or. returns 23 to the leaf path. Previous sheet or. pole 23 continues to advance on the first conveyor 56, which causes the drawn part of the edge of the previous sheet to slip. pole 22 crosses the surface of the vacuum cylinder 61 until it slides past the last row of openings 63 on the vacuum cylinder 61 and returns to the leaf path. The drawn part of the edge of the previous sheet or. pole 22 now rests more than below the leading edge of the previous sheet. pole 23.

DRYER

Lists or. the sheets (either individually or in the form of a pseudo-roll of overlapping sheets or poles) are transported with a third conveyor 56 from step 4 for the spacing of the sheets or sheets. pole and through dryer 5, where it is removed from the basic and LAB release on the leaves and / or leaves. polah. The overlapping sheets, respectively. the sheets are then continuously moved through the dryer 5 with the third conveyor 56 and dried at such a speed as to reduce the tendency of the leaves or the conveyor. half to twist.

LEVEL TO COVER THE SHEETS

When the sheets are guided individually through the dryer 5, a sheet 8 is arranged to cover the sheets between the dryer 5 and the adhesive transfer stage 7, to cover the sheets with one another before entering the adhesive transfer stage 7.

All individual sheets, respectively. the poles emanating from the dryer 5 are picked up by a pair of input cylinders 110 and given sheets or sheets. poles between a pair of drive cylinders 111. The drive rollers 111 transport the poles to a lever 112. The lever 112 oscillates between the first position where the lever 112 extends into the leaf path and stops the continuation of the leaves along their path, and the second position where the lever 112 is in the position below the path of leaves, so as to allow all the accumulated leaves, respectively. breakdown progression to level 7 to transfer glue.

The drive wheels 111 oscillate between the open position and the closed position in response to the position of the lever 112 so that they rotate without ejecting the leaves forward when they swing the lever 112 into the first position, and eject the leaves forward along the path of the leaves when they swing the lever 112 into the second position below the path of the leaves.

The lever 112 returns to the first position while being part of the previous sheet or. the pole 22 is still in a position above the spring 112 so that the drawn part of the previous sheet 22 is lifted from the path of the leaf with the lever 112. The lever 112 is then swung to the second position and the drive roller 111 closes while the drawn part of the edge of the previous leaf or . the pole 22 is still above the lever 112 so that the drawn portions of the edge of the previous sheet or. the sheets 22 are overlaid with the leading edge portion of the next sheet, respectively. pole 23.

ADHESIVE TRANSFER RATE

Registered and overlapping sheets, respectively. the poles pass through the transfer site 70, where they come into contact with the endless conveyor belt 71, which has previously been subjected to adhesive release in the form of several adhesive tapes 236 extending longitudinally along the transfer belt 71 and at least partially dried. Adhesive tapes 236 are conveyed from conveyor belt 71 to the pseudo-roll of overlapping sheets and those sheets removed from conveyor belt 71 together with adhesive tapes 236 with vacuum tape 95 and / or vacuum reel 239.

STORAGE RATE (PACKAGE) OF SHEETS OZ. POL

Adhesive-free leaves or. the sheets originating from the adhesive transfer stage 7 are transferred to the storage sheet 9, where the adhesive-free sheets are stored in a stack 140 and prepared for cutting into blocks or blocks. enter the desired format and format.

Claims (72)

PATENT APPLICATIONS 1. A process for the production of dewatered leaves or poles, characterized in that it comprises: (a) the successive introduction of leaves or poles having a first and a second major, respectively. the main surface, from the first hopper to the leaf or half path and the continuation of leaf transport or half along the leaf path or half in the direction of the workflow; (b) inserting at least one sheet or sheet with the first and second larger surfaces from the second storage container into the conveyed sheets along the sheet or sheet path to form a series of sheets or sheets arranged in an overlapping end-to-end relationship; and (c) applying the detergent material individually to at least one larger surface of each leaf or sheet in an overlapping sequence of leaves or poles, while continuing to transport the leaf or half along the path of the leaves so that the leaves or leaves are formed. pole, Method according to claim 1, characterized in that it further comprises temporarily interrupting the feeding of sheets or sheets from the first storage container in a timely manner with respect to the insertion of a sheet or sheets from the second storage tank, such that a uniform spacing between the sheets or sheets is arranged in sequence overlapping leaves or half. Method according to claim 1, characterized in that it further includes changing the speed at which the sequence of overlapping leaves or poles is transported in a longitudinal direction along the path of the leaves, depending on the length of the leaves or poles in the direction of the process. A method according to claim 1, characterized in that a sheet or sheet inserted from another container is inserted into the path of the sheets perpendicularly in the direction of the process. Method according to claim 1, characterized in that the water-based coating material is applied to both major surfaces of each sheet or sheet. Method according to claim 5, characterized in that the coating material is applied to the first larger surface of the leaves or, respectively, half and to apply a thin adhesive with a low adhesiveness to the second larger surface. Method according to claim 5, characterized in that it involves drying the dried leaves or poles while continuing their transport along the sheets or poles to form dry sheets or poles. A method according to claim 7, characterized in that: (i) the dry leaves or sheets are arranged in an overlapping end-to-end sequence, and that (ii) the further release material is applied continuously to at least one of the larger surfaces dry leaves or. half while continuing their transport along the leaf path. A method according to claim 8, characterized in that the further release material is an adhesive. A method according to claim 9, characterized in that the adhesive is a transferable adhesive. 11. A device for the production of dewatered leaves or poles, characterized in that it comprises: (a) a conveyor; (b) a sheet feeder or pole, which operates in such a way that it runs the leaves respectively; the sheets from the first container to the conveyor in an overlapping end-to-end connection to form overlapping sheets or sheets; (c) a sheet or sheet insert which operates by inserting at least one sheet or sheet from another container into the overlapping sheets or sheets on the conveyor to form an overlapping sequence of sheets or sheets; and (d) a dehumidifier system which is in such a position that it accepts an overlapping sequence of leaves or poles from the conveyor and is operated in such a way that it individually applies the dehumidifying material to at least one larger surface of each leaf, pole. Device according to claim 11, characterized in that the speed of the conveyor between the sheet feeder and the pole and the dehumidification system is adjustable to compensate for the different lengths of the sheet or pole. Apparatus according to claim 11, characterized in that the sheet insertor is located on one side of the conveyor, so that the sheets or sheets introduced from the first hopper are conveyed at right angles to the conveyor. Apparatus according to claim 11, characterized in that the dehumidification system is a two-way dehumidifier, which operates by applying water-based dehumidifying material to both major surfaces of each sheet or sheet. 15. A device according to claim 14, further comprising a dryer that is in a position to receive leaves or leaves. pole from the two-sided dehumidifier and is operated by removing water from the dehumidifying material applied to the leaves or poles in the two-sided dehumidifier. 16. A device according to claim 15, further comprising: (i) a second dehumidifier in such a position that it accepts leaves or sheets emanating from the dryer and is operated by applying further dehumidifying material to at least one major the surface of each sheet or sheet; and (ii) a sheet overlay step downstream of the two-sided dehumidifier and operated by arranging the leaves or sheets in an overlapping end-to-end relationship to enter the second dehumidifier. Device according to claim 16, characterized in that there is a degree of covering of the leaves in the upward direction relative to the dryer. 18. A method of applying aqueous dewatering material to both major surfaces of a plurality of leaves, characterized in that it comprises: (a) sequentially transporting a number of leaves having a first and second major surface, along the path of the leaves and in the direction of the process; (b) application of aqueous dehumidifying material to the first and second major surfaces of each leaf; poles, while transporting leaves along the path of the leaves so as to form loose leaves or poles; (c) drying of the leaves or poles, while continuing to transport the sheets or poles along the path of the leaves, so as to form dried sheets or poles; (d) arranging the dried leaves or poles in a successive, overlapping end-to-end relationship so as to form an overlapping sequence of dried leaves or poles; and (e) continuous application of further dehumidifying material to at least one of the larger surfaces of the overlapping sequence of dry dewatered leaves or poles. 19. A method according to claim 18, characterized in that the aqueous release material is applied simultaneously to the first and second larger leaf surfaces, respectively. 20. A method according to claim 18, characterized in that the aqueous coating material applied to the first larger surface is a primer and the aqueous coating material applied to the second larger surface is a low adhesive adhesive. 21. The method of claim 20, wherein the plurality of sheets or sheets are pre-pressed on another larger surface. 22. A method according to claim 20, characterized in that: (i) the further release material is an aqueous adhesive, (ii) the further release material is applied to the first larger surface, (iii) the adhesive is applied in the direction of operation in the form of independent and interconnected strips , covering less than the entire width of the leaf or half. A method according to claim 19, characterized in that the coated leaves or sheets are dried by simultaneously drying the first and second larger surfaces of each coated sheet or sheet. A method according to claim 18, characterized in that the sheets or sheets are arranged in an overlapping end-to-end sequence, including: (i) lifting the drawn edge of each sheet or sheet from the leaf path, (ii) inserting the leading edge of the immediately following sheet or sheet between the raised drawn edge of each sheet or sheet and the path of the sheet, and (iii) allowing the raised drawn edge to be returned to the sheet path so that the drawn edge of each sheet or sheet is positioned above the leading edge of each immediately following sheet or sheet. A method according to claim 18, characterized in that the leaves or sheets overlap in a distance of about 1 cm to 2 cm. 26. The method of claim 18, further comprising inserting at least one sheet or sheet from another stack of sheets or sheet onto sheets or sheets transported along the leaf path before applying aqueous dewatering material to the sheets or sheets. A method according to claim 18, characterized in that it involves collecting and storing or stacking dry dried leaves or poles before covering them with one another. 28. A device for applying aqueous dewatering material to both the first and second major surfaces of a plurality of leaves or poles, characterized in that it comprises: (a) a double-release stage adapted to receive and release the two major surfaces of successively introduced leaves or poles, the double-release stage comprising a first and a second release system constructed and arranged to apply aqueous release material to the first or another larger area of each leaf or sheet; (b) a drying stage constructed and arranged to receive leaves or sheets arising from the double-release stage and operated by removing water from the aqueous release material applied to the sheets or sheets at the double-release stage; (c) an overlay mechanism constructed and arranged to receive leaves or sheets emanating from the drying stage and operating in such a way that it arranges the sheets or sheets in a sequential, overlapping end-to-end relationship; and (d) a further dewatering step which is constructed and arranged to receive overlapping leaves or sheets emanating from the overlay mechanism and is operated by continuously applying further dewatering material to the first larger surface of the overlapping sheets or poles. A device according to claim 28, characterized in that: (i) the first and second emitting systems each comprise an emulsion cylinder and (ii) the emitting cylinders are arranged opposite each other on opposite sides of the leaf path so as to form a gripper which it is effective for pulling leaves or poles through the two-sided release step and at the same time applying the release material to the two larger surfaces of the leaves or poles as they pass through the squeeze line. 30 '. Apparatus according to claim 28, characterized in that the overlapping mechanism is effective for placing the drawn edge of each sheet or sheet over the leading edge of the immediately following sheet or sheet. 31. The device of claim 28, further comprising a container which is constructed and arranged to receive leaves or sheets as they emerge from the dryer, and is operated to store sheets or sheets and subsequently to introduce stored or stacked sheets. or sheets of paper in their overlapping end-to-end relationship. Device according to claim 28, characterized in that the further release step comprises: (i) a conveyor for moving overlapping leaves or poles through the transfer site; (ii) a transfer surface constructed and arranged to be transported through the transfer site and to contact all overlapping sheets or sheets during transport through the transfer site on the conveyor; and (iii) a dispenser constructed and arranged to apply further release material to the transfer surface for subsequent transmission from the transfer surface to all sheets or poles transported through the transfer site to the conveyor. Device according to claim 28, characterized in that it comprises: (i) a sheet feeder or pole for sequentially introducing the leaf or pole from the source of the first leaves to the two-way release stage, and (ii) a leaf insertor in the trajectory position upward from the degree of bilateral liberation, which operates by inserting leaves or sheets from the source of other leaves or half in a sequence of leaves or half guided from the source of the first leaves or half. 34. Preparation for the handling of leaves, characterized in that it comprises: (a) a first conveyor for transporting a sequence of overlapping sheets or poles along a leaf path, wherein the drawn portion of the edge of each sheet or sheet is located below the leading portion of the edge of the next sheet or sheet; (b) a second conveyor which is constructed and arranged to receive overlapping sheets or sheets from the first conveyor; and (c) a mechanism in a position between the first and second conveyors for changing the overlapping positions of the overlapping sheets or poles; which includes: (1) a blower for directing air flow to the overlapping portions of the edges of each pair of overlapping leaves or poles by lifting the overlapping portions of the edges from the leaf path, and (2) aids to delay the subsequent return of the raised portion of the drawn edge of each leaf or pole , for a sufficient period of time to allow a portion of the leading edge of the next sheet or sheet to return to the path of the sheet or sheet before the portion of the drawn edge, thereby resting the drawn portion of the edge of each sheet or sheet on top of the leading portion of the edge of the next sheet or sheet on another conveyor . Device according to claim 34, characterized in that the devices for delaying the return of the raised part of the drawn edge of each sheet or sheet comprise a vacuum device that is effective for pulling e and holding the raised part of the drawn edge of sheet or sheet without attracting and retained the raised portion of the leading edge of the next sheet or sheet. 36. Device according to claim 35, characterized in that: (i) the vacuum device is a vacuum cylinder which is connected to a source of reduced pressure to exert a suction force and has (A) a first and a second end, (B) a side wall, (C ) a longitudinal axis extending through the first and second ends; and (D) a number of openings through the side wall of the cylinder which are in flow communication with the source of reduced pressure; and (ii) a vacuum cylinder extending longitudinally across the width of the leaf path and in such a position relative to the leaf path and the blower that the suction force exerted through the openings attracts and delays the return of the raised portion of the drawn leaf edge or pole. Device according to claim 35, characterized in that the raised drawn edges of the leaves or poles, which are retained by the vacuum device, are removed from the vacuum device by forward-oriented movement of the sheet or sheets on another conveyor. Device according to claim 37, characterized in that the second conveyor includes a conveyor surface and a vacuum system that exerts a reduced pressure on the conveyor surface, wherein the squeeze provided by the vacuum system is sufficient to remove the leaves or pole from the vacuum device in the meanwhile. as the leaves or poles move forward on another conveyor. Device according to claim 35, characterized in that it includes a deflection surface which is constructed and arranged to direct the air from the blower towards the vacuum device. 40. A device for the release of leaves or poles, characterized in that it comprises: (a) the first conveyor for transporting a sequence of overlapping leaves or half along the path of leaves or half; (b) a dewatering step that operates by: (i) applying the dewatering material to both major surfaces of a number of leaves or poles to form dewatered leaves and poles; and (ii) depositing the depleted leaves or poles to the first conveyor, lying a drawn part of the edge of each sheet or sheet under the leading edge portion of the next sheet or sheet to form a sequence of overlapping sheets or sheet; (c) a second conveyor constructed and arranged to receive a sequence of overlapping leaves or poles from the first conveyor and proceeding to transport a sequence of overlapping leaves or poles along the path of the leaves; and (d) a mechanism in a position between the first and second conveyors for changing the overlapping positions of the overlapping sheets or pole, which includes: (1) a blower for directing airflow to the overlapping portions of the edges of each pair of overlapping leaves or poles by lifting the overlapping portions of the edges from the path of the leaves; and (e) means for delaying the return of the lifted portion of the drawn edge of each sheet or sheet for a sufficient period of time to allow the lifted portion of the drawn edge of the next sheet or sheet to return to the path of the sheets before the drawn portion of the sheet, thereby drawing the portion of the edge of each sheet that is, the pole rests on the leading edge of the next sheet or the pole on another conveyor. 41. Device according to claim 40, characterized in that the device for delaying the return of the raised part of the drawn edge of each sheet or sheet comprises a vacuum device that is effective for attracting and retaining the raised part of the drawn edge of the sheet or sheet without attracting and holding the raised one. part of the leading edge of the next sheet or sheet. Device according to claim 41, characterized in that (i) the vacuum device is a vacuum cylinder connected to a source of reduced pressure to exert a suction force and having (A) a first and a second end, (B) a side wall, (C ) a longitudinal axis extending through the first and second ends, and (D) several openings through the side wall of the cylinder which are in flow communication with the source of reduced pressure; and (ii) a vacuum cylinder extending longitudinally across the width of the leaf path and in such a position relative to the leaf path and the blower that the suction force exerted through the openings attracts and delays the return of the raised portion of the drawn leaf edge or pole. A device according to claim 41, characterized in that the raised drawn edge of the leaf or pole retained by the vacuum device is removed from the vacuum device by moving the sheet or sheet forward to another conveyor. Device according to claim 43, characterized in that the second conveyor includes a conveyor surface and a vacuum system that exerts a reduced pressure on the conveyor surface, the force exerted by the vacuum system being sufficient to remove the leaves or pole from the vacuum device between moving the leaves or half forward to another conveyor. 45. The apparatus of claim 41, further comprising a deflection surface which is constructed and arranged to direct air from the blower towards the vacuum device. A device according to claim 40, further comprising a dryer that is constructed and arranged to dry the dried leaves while transporting the leaves or sheets along the leaf path with another conveyor. Device according to claim 46, characterized in that it further includes a further coating step in such a position that it receives a sequence of overlapping leaves or poles emanating from the dryer and is operated in such a way that it continuously applies further coating material. to the first larger leaf area or half. 48. A process for the release of leaves or poles, characterized in that it comprises the steps of: (a) sequentially transporting numerous leaves or poles, each having a first and second larger surfaces, along the leaf path and in the direction of operation; (b) applying aqueous dewatering material to the first and second major surfaces of each sheet or sheet during their transport along the path of the sheets so as to form the sheet or sheet being drained; (c) arranging the leaves or poles with the drawn part of the edge of each sheet or sheet under the leading edge of the next sheet or sheet; and (d) varying the overlapping positions of leaves or poles by: (i) lifting the covered portions of the edges of each sheet or sheet from the leaf path, (ii) delaying the return of the raised portion of the drawn edge of each sheet or sheet for a sufficient period of time to allow the raised portion of the leading edge of the next sheet or sheet to return to the sheet or sheet path before the trailing edge portion is drawn, and then (iii) allowing the raised portion of the trailing edge of the sheet or sheet to be returned to the paper path and resting on top of the leading edge portion of the next sheet or sheet. 49. A device for applying a release material to a sequence of overlapping leaves or poles, characterized in that it comprises: (a) a conveyor for transporting a sequence of overlapping leaves along the leaf path and through the transfer site, where the drawn portion of the edge of each sheet or sheet is in a position above the leading edge portion of the next sheet or sheet; (b) a transfer surface which is constructed and arranged in such a way that it passes through the transfer site and comes into contact with the overlapping sheets or poles transported through the transfer site on the conveyor; (c) a dispenser which is constructed and arranged so as to apply the releasing material to the transfer site for the next transfer from the transfer surface to the overlapping sheets or sheets while transporting the overlapping sheets or sheets through the transfer site to the conveyor; and (d) a recording mechanism which is constructed and arranged to react with overlapping leaves or poles as they exit the transfer site by initially applying a suction force to the leaves or poles having a first strength sufficient for recording leaves and poles from the transfer surface, and after that we apply a suction force to the leaves or poles with another strength, which is sufficient to maintain the leaves or poles in their position when transporting the leaves or poles away from the transfer point. 50. The device according to claim 49, characterized in that the transfer surface is transported through the transfer site along the first plane and that the device further includes a second conveyor on which the leaves or sheets are deposited when the leaves or poles emerge from the transfer site and which move along the second a plane that is at an angle offset from the first plane. 51. Device according to claim 50, characterized in that the second conveyor moves from the second plane to the third plane when the conveyor moves away from the transfer point, the angle between the first and third planes being greater than the angle between the first and second planes. A device according to claim 50, characterized in that the angle between the first and second planes is between 1 and 6 degrees. Device according to claim 49, characterized in that the suction force has a first strength of about 3430 Pa to 5390 Pa (350 to 550 mm H ₂ O). Device according to claim 53, characterized in that the suction force has a second strength of about 1470 Up to 1960 Pa (150 to 200 mm H ₂ O). . 55. The device according to claim 49, characterized in that it comprises: (a) a cylinder constructed and arranged to form a line of contact with the transfer surface for the support or base of the overlapping leaves in contact with the transfer surface; and (b) the devices for grabbing the sheet or sheet downstream of cylinders, for maintaining overlapping leaves or poles in contact with the transfer surface when the leaves or poles come from the line of press. A device according to claim 55, characterized in that: (i) a roller comprising a series of circumferential grooves and (ii) a leaf or pole grabber means having multiple fingers that match the circumferential grooves to maintain overlapping leaves or poles in contact with the transfer surface after the leaves or sheets have left the pressing line. 57. A device according to claim 49, characterized in that the applicator is effective for applying the absorbent material to the transfer surface in one or more longitudinal strips or lines. 58. The device of claim 57, further comprising a reservoir for supplying the dispenser with the dewatering material, 59. The device of claim 58, further comprising the adhesive in the reservoir when feeding the dispensing material into the applicator. 60. A method for applying a release material to sheets or sheets, characterized in that it comprises: (a) the application of detergent material to an endless transfer surface; (b) transporting a succession of overlapping leaves or poles along the path of the leaves or poles and through the transfer site, where the drawn portions of the edges of the leaves or pole 'in a sequence thereof are positioned above the leading edge of the next sheet or pole; (c) contacting the overlapping sheets or pole with the transfer surface at the transfer site by transferring the debris material from the transfer surface to the overlapping sheets; (d) applying suction force to the overlapping leaves when emanating from the transfer site, sufficient to remove the overlapping leaves and debris from the transfer surface; and (e) applying a reduced suction force to the overlapping leaves or poles further downward relative to the transfer site, sufficiently to maintain the overlapping sheets or poles in a position when transporting the sheets or poles from the transfer site. 61. Apparatus for applying a dehumidifying material to the first major surface of a leaf or pole sequence, characterized in that it comprises: (a) the first cylinder; (b) a second cylinder having an outer surface and a perimeter and constructed and arranged with respect to the first cylinder so as to define a compression line of compression; (c) a support sheet or pole that is detachably attached to the outer surface of the second cylinder; and (d) a lining made of an elastomeric material covering the circumferential region of the second cylinder and bonded to the support sheet or sheet by adhesive such that the release line is formed only when the coated portion of the second cylinder is pressed against the first cylinder. Device according to claim 61, characterized in that it further comprises: (i) a source of desiccant material and (ii) a applicator that is effective for applying the desiccant material from the source of desiccant material to the coating. 63. Device according to claim 61, characterized in that the support sheet or semi-flexible sheet or plastic sheet is synthetic or synthetic. 64. Device according to claim 61, characterized in that the support sheet or pole is secured to the second cylinder by means of clamping clips. 65. A device according to claim 62, wherein the release material is an aqueous material. 66. A device according to claim 65, wherein the aqueous material is a low adhesive adhesive. 67. The device of claim 62, further comprising: (i) a source of further dewatering material and (ii) an applicator effective for applying further dewatering material from the source of further dewatering material to the first cylinder. Device according to claim 67, characterized in that the further release material is a second aqueous material. 69. A device according to claim 68, characterized in that a primer material is used as the second coating material. A device according to claim 61, further comprising: (a) a sensor (sensor) which is effective for detecting the presence or absence of a sheet or sheet to be introduced into the distress line and transmitting a secondary signal if the sheet or sheet is not present; and (b) a device in communication with a sensor for separating the first and second cylinders, such that the contact between the first cylinder and the liner on the second cylinder is broken in response to the reception of the secondary signal from the sensor. 71. The device of claim 61, further comprising a means for controlling the entry of leaves or poles into the compression line of the press in time depending on the rotation of the second cylinder, ensuring that the entire length of the sheet or pole rests on the liner. 72. A method for applying a release material to sheets or sheets, characterized in that it comprises: (a) transporting the sheets or pole one by one through a compression line drawn with the first and second cylinders, wherein: (i) the support sheet or pole is detachably attached to the outer surface of the second cylinder, and (ii) the lining of the elastomeric material covers the circumferential area of the outer surface of the second cylinder and is adhered to the support sheet or pole by adhesive, so that a release line of compression is formed only when the coating of a part of the second cylinder is pressed against the first cylinder; (b) the application of the coating material to the coating; and (c) transferring the coating material from the coating to the conveyed sheet or sheet through the coating line.