DE2211020A1 - Method and apparatus for self-acting compression and bandaging of a stack of compressible objects - Google Patents

Description

Patent attorneys

Jaliieln Mchei

DipL-Ing. VtI :: -J Γ Al

6 Fianl'iuii a. M. I.

Paxksiraße 13

6998

INTERNATIONAL PAPER COMPANY, New York, V.St.A.

Method and device for automatic compression and bandaging a stack of compressible articles

The invention relates to a method and a device aura automatic compression and bandaging of an object or a stack of compressible items.

In the U3-P3 3 513 628 a device is shown, the Gegenstäjile, see 3. Cellulose pillows, crepe papers and disposable ones 7indeln presses together while they move along a predetermined path between two converging press belts or Move press arms. In particular, the stack height is reduced by about half, thereby reducing the size of the objects or the volume of which is reduced in order to facilitate handling, storage and transport as well as a uniform Packing size to get. This compressed stack is introduced into and between two stationary holding jaws. A pre-made tape or bandage is slipped over the jaws by hand, and then the stack is made compressed objects and the enclosing tape simultaneously removed from the holding jaws manually, with the objects expand freely and in direct contact with the encircling or encompassing band that the

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Keeps objects pressed together.

The manual operations, namely pushing the However, the tape over the jaws and the removal of the objects and tape from the jaws limit the speed of the bandage process and entail labor costs. It is therefore particularly advantageous or desirable to have a Facility or facility to create items, such as diapers, with higher working speeds and more economical automatically compressed and bandaged. Furthermore, it is possible to reduce the cost by having the prefabricated Band is replaced by a band or a bandage, which is made of a continuous web of material automatically will be produced.

The method according to the invention is characterized by the following steps:

Advancing the stack of articles along a predetermined path, moving sheet envelopes which are used for Forming an endless belt to be united, in contact with the stack, compressing the stack by counteracting Forces and holding the stack in the compressed state while the wrapping sheets are on this and bringing and joining the ends together of the wrapping sheets to form an endless belt as well as canceling the oppositely directed forces, so that the belt holds the articles in a compressed state in a bandaged or bound stack.

The device for carrying out the method is characterized according to the invention by a device for forward conveying a stack of items along a predetermined path, a device that holds the wrapping sheets in liner with the Stack moved, a device for compressing the stack on which the wrapping sheets are located and for moving the stack

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of the stack and by a device which brings the ends of the cover sheets together so that they can be brought together, whereby the articles are retained in a compressed state. '-

Further advantages of the invention will emerge from the detailed description below.

The invention will now be described in detail with reference to the accompanying figures described, with all details or features emerging from the description and the figures for the solution can contribute to the task within the meaning of the invention and were included in the application with the intention of being patented. Show it:

Pig. 1 is a schematic representation of an apparatus for carrying out the method according to the invention, which contains the new features of the invention;

Pig. Figure 2 is a top plan view of an introducer conveyor for use with the Pig's apparatus. I;

Pig. 3 is a schematic cross-sectional view of a stack

. of objects with assigned pühlbogen or wrapping bows, before compressing the stack;

Pig. 4 shows a compressed and bandaged stack of Objects;

Pig. 5 is a schematic representation of a web from which the wrapping sheets are separated;

Pig. 6 a knife device, which a wrapping sheet from the Separates web and

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Pig. 7 a device which applies an adhesive to the Applies envelope sheets.

As illustrated in the drawings for explanatory purposes, the invention is embodied in a device 11, the one stack 12 of flat, stacked objects 13 »such as disposable diapers, cellulose pillows, crepe papers or The like. Automatically compressed and bandaged while the stack is continuously or substantially continuously along is conveyed further along a predetermined path at a relatively high running speed. The preferred one with the The method carried out in apparatus 11 comprises the following method steps:

Advancing the stack 12 along a predetermined path, for example as indicated by the directional arrow in Pig. 1 indicated is, feeding bandages or wrapping sheets Ha and Hb, which are combined into an endless band H (Pig. 4), in a position in which they come into contact with the stack, compressing the stack by counteracting Forces and plague holding the stack in the compressed state while the wrapping sheets are on it, overlapping and Joining the ends of the wrapping sheets to form a continuous belt around the compressed stack of articles 12, as well as cancellation of the forces acting in the opposite direction, which keep the objects in a compressed state, whereby the objects were compressed and bandaged in one State, as is the case, for example, in Pig. 4 is shown. A pile of items like him for example in Pig. 3 is shown, can in this way significantly reduced in its stack height and quickly and automatically be bandaged while moving continuously or substantially continuously through the device 11.

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_ 5 -

The appearance or appearance of the stack is improved if the individual items are all neatly aligned are while they are being bandaged. However, if the items, such as disposable diapers, are supplied by an upstream Arriving at the work station, the individual items within the stack can have longitudinally extending sides 13a or transverse ones or end faces 13b that are misaligned or are slightly staggered. As will be explained in more detail below, the items are aligned while the stack in a position between two endless press belts 19 and 20 is introduced.

Furthermore, in order to reduce the cost of the tape or the bandage, one preferably proceeds so that each wrapping sheet 14a and 14b 'is covered by a continuous web 21 of bandage material is separated. The envelope sheets 14a and 14b have adhesive or cohesive adhesive areas 22 and 23 (as best in Pig. 3 can be seen), which are overlapped and pressed together in an adhesive bond. The adhesive areas can be made from either consist of cohesive strips which are arranged on the webs 21, or which have envelope sheets, as in connection with a second embodiment of the invention is described, an adhesive that is applied at their ends, resulting in a leads to another operation of the pressing and bandage process. The enveloping sheets 14a and 14b can also, as will be explained, be severed from a continuous web by means of a tensile force in order to weaken the sheet from the web at a line of perforations 26, an embossed line or some other type of weakened Solve Zone. According to an alternative solution, a knife device can be provided in order to remove the envelope sheets from the Cut off tracks. The envelopes are fed in as a function of time to the stacking movement in order to ensure that they match or to ensure registration with this.

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For this purpose one proceeds preferably in such a way that the enveloping arches are moved forward by the press belt and adhered to them by a pressure difference, while the envelopes be brought into abutment with the opposite sides of the stack.

It will now be shown in more detail on the individual elements Device 11 is referred to. A continuous foam or a continuous series of separate stacks 12 of Diapers produced by a diaper making machine (not shown) come, be how best m pig. 2 can be seen in a position at an inlet port or mouth opening 31, a Introducing conveying device 33 brought, which in time coordination is driven to the diaper making machine, and either in that a drive connected directly to the diaper manufacturing machine or a separate drive is provided which is adjusted so that its operating speed is coordinated with the speed of the diaper stack, which move from a conveyor belt 32 into the inlet opening 31 of the conveyor device 33. The infeed conveyor 33 not only serves the purpose of feeding the stacks of diapers to the press belts 19 and 20, but is also preferably designed so that they the longitudinally extending sides 13a and the transverse ends 13b of the individual articles in vertical Aligns planes to create neat or flawless stacks.

In particular, the illustrated infeed conveyor includes 33 a horizontal, stationary support plate 34, sliding devices 35 and two endless belts in the form of chains 37, which are arranged on the opposite sides of the path of movement of a stack 12 along the support plate 34. the Device 33 further includes rearward slides 39 'which come into sliding engagement with the rearward ends 13b of the objects,

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and side slides 41 which are in sliding engagement with the longitudinal extending sides 13a of the objects in the stack 12 come. The endless chains. 37 are movable between a freewheel sprocket 43 at the inlet end 31 of the conveyor and a drive sprocket 45 at the outlet end 51 of the infeed conveyor. The chains 37 are along their respective ones forward sections led to a converging To form an inlet opening on the freewheel sprockets 43 and a divergent outlet opening on the drive sprockets 45. Between the sprockets 43 and 45, the chains 37 are along an exner rectilinear horizontal path between a upstream and downstream smaller freewheel sprockets 47 and 49 led.

The side slides 41 have a vertically extending wall 46 which extends over the height of the stack 12 to come into abutment with each adjacent side of the items in the stack. When a balanced pair is sideways Sliders moved around the intake or idler sprockets 43, the sliders become along converging paths transported in order to initially come into contact with those sides of the objects that protrude outwards. During the intervening rectilinear movement of the lateral slides 41, these move the objects into aligned positions, such that their longitudinally extending sides 13a are in parallel vertical planes with respect to the vertical walls 46 of the side sliders are aligned.

The preferred pusher devices 35 are effective Shift position adjusted in an ineffective release position to each stack 12 on the lower press belt 19 for stop another movement. For this purpose, there are fixed, arcuate cams 53 at the outlet end of the conveyor 33 is provided, which engages with a looseness

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Polgerrolle 55 come on each rear slide 39, which has two vertically spaced, pivotably mounted lever arms 57 which are pivotably mounted on a vertical bearing pin 59 which is attached to a bracket 61 fixed to the chain is fixed .. The lever arms 57 are pulled by tension springs 63 into an effective position or working position in which they protrude into the space between the inner sections of the chains to be in abutment with the exposed rear ends 13b of the items to come. In the exemplary embodiment that is one end of the tension springs 63 on the lever arm; i'uütge.iiachL ,, while the opposite end is attached to an inner vertical side wall of the bracket 61, which in turn is attached to a Chain 37 is firmly attached. Each rear slide 39 is provided with a vertically extending rail 62 which is connected to the upper and lower lever arms and has a flat, vertical, forward-facing side with which it comes into contact with each object and pushes it forward, whereby the stack 12 on the underlying platen 34 is pushed forward. In summary, the following is stated:

The rear slider lever arms are normally biased by the pedals 63 in a position in which they are in Plant stand with a stack 12, until a rJockenfolder 55 comes into engagement with the .Nocken 53 and the Lever arms pivoted outwardly from the stacking path, as shown at the outlet end of the conveyor 33. Through this a clean stack 12 is deposited from the platen 34 onto the continuously moving lower press belts 19 transferred.

The upper and lower wrapping sheets 14a and 14b are of loosened upper and lower continuous webs 21, which are drawn off from large supply rolls 69. To the individual Separate wrapping sheets 14a and Hb and their movement

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to be timed or controlled so that they are precisely positioned relative to the incoming stack 12 is a discharge device 71 in the form of a sound sensor or sonometer is provided with a sono beam which is transmitted through " a transmitter is issued and a receiver is received, and is positioned to receive the arrival of a stack a predetermined position, e.g., when the stack passes the sprockets 49 of the infeed conveyor. As an alternative solution, an electric eye or photo cell or a sensing switch can be used instead of the sensing device 71 can be used. A signal generated due to the sensing of the stack 12 is used to actuate an optional actuatable device 72 in order to release or separate the wrapping sheets from their continuous webs 21. Ba the Enveloping sheets Ha and 14b separated in similar Yfeise and a description of just one is sufficient of the wrapping sheets, common reference numerals being provided for the same elements.

Prior to sensing an incoming stack 12, there is a front hand 73 of the lower continuous web 21 in FIG Rest position and protrudes from the gap of a pair of first feed rollers 75 upwards to move into a conveyor gap are located between a conveyor roller 79 and a front idler roller 81 for the lower press belt 19 is located. The sensing of the stack 12 by the discharge device 71 is used to energize electric shoe coupling units 83 for each of the first conveyor rollers 75 is used to start rotating these rollers and thereby moving the web 21 forward. Similarly, are electric jaw coupling units 85 also provided for a second or delayed set of second conveyor rollers 87, so that these are also rotated in order to further transport a lower part of the web. As will be explained below, promote the first or preceding and delayed sets of

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Conveyor rollers run the spell at the same speed, but operate at different times and stopped.

A Perferationslinie in the web 21 is between the upstream Conveyor rollers 75 and the downstream conveyor rollers 87 are arranged and the web is between these sets of conveyor rollers limp or not tense, as the subsequent sentence was operated by the conveyor rollers for a short period of time after the first set of conveyor rollers stopped. That that is, the web that has accumulated between the sets of conveyor rollers is slightly longer than the distance between theirs corresponding columns. Therefore, if the upstream set of conveyor rollers is first put into operation while the If the other downstream set of conveyor rollers is in the rest position, the slack is quickly removed and the track is lifted is set in motion abruptly with sufficient tensile force to place the wrapping sheet at the perforation line between to separate these sets of conveyor rollers.

The now independent lower envelope sheet 14b is forwarded by the upstream conveyor rollers 75 and from the stationary new front edge of the web 21 transported away for further conveyance by the downstream set of conveyor rollers 87 is ready. The detached wrapping sheet Hb is moved into the gap by the upstream conveyor rollers 75 inserted between the idler roller 79 and the press belt roller 81, at which position a suction from a vacuum box 89, which is arranged below the front end of the press belt 19, is effective to the front edge of the lower Enveloping sheet Hb to attach to the lower press belt 19, so that this of the curvature of the openwork belt around the Roll 81 follows and comes into contact with the incoming stack 12, which is now placed on the wrapping sheet Hb.

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The control or the time of the envelope separation and the conveying speed of the wrapping arc are accordingly so on the stacking movement from the discharge device 71 coordinated to a position above the press belt 19 that the stack 12 is placed on the lower sheet 14b, while see the upper envelope Ha immediately above is located, but is spaced from the top of the stack 12. In the exemplary embodiment, the enveloping sheets Ha and Hb is less than the longitudinal length of the articles in the stack 12, and they are preferred centered on the stack.

After a sheet Hb has been severed, the new front edge 73 of the web 21 is transported upward into the gap between the upstream conveyor rollers 75 by the downstream set of conveyor rollers 87. At this time, the leading edge of the web is kept at a distance from the trailing edge of the severed wrapping sheet Hb. When the front end moves up out of the gap of the upstream conveyor rollers 75, it is sensed by a filling device 91 in the form of a system with an electrical eye, which then via an electrical circuit the electrical brake-clutch units 83 for the set of upstream Conveyor rollers 75 switched into a braking position in order to stop the further advance of the web 21. As an alternative solution, a similar sensing system can also be used instead of the discharge device 91. A short time later, which is determined by a timer or a time control circuit in the electrical circuit, the electrical brake-clutch units 85 for the downstream conveyor rollers are actuated and brought into a 3remsposition ₉ to further advance the now slack web between these sets to be stopped by conveyor rollers. If the downstream conveyor rollers are turning

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stop, the perforation line for the separation of the next sheet of envelopes becomes a slack, slightly arched one Part of the path, as well as between the upstream conveyor rollers 75 and the downstream or delayed conveyor rollers 87 positioned. "

Preferably, a length of the web 21 is temporarily stored, in order to provide a number of wrapping sheets Hb and to transport them forward before the supply roll 69 must rotate with the large diameter for the unwinding of an additional web. In the exemplary embodiment, a temporary Loop 93 is formed by a movable dancer roll 95 which moves between a first or full loop position, as shown in full lines in FIG. 1, for example, and a minimum loop position such as is indicated in dashed lines in FIG. As the web 67 advances through the lower conveyor rollers 87 is, the dancer roller 95 is pulled by the path of FIG. 1 to the left, against a spring force which a maintains a predetermined tension in the web 21. After a number of wrapping sheets 14b has been peeled off, moves the dancer roll 95 to the minimum loop limit position, which is shown in dashed lines in Fig. 1, and on which the dancer roller 95 actuates a limit switch 96 which voltage is applied to a motor drive device which in turn rotates the supply roll 69. In the exemplary embodiment, the Motor drive an endless belt 97 'which is driven so that an additional length of web from a supply roll 69 unwinds at a constant speed. While the web unwinds, a spring force presses the dancer roller 95 right to expand the size of the loop until the dancer roll reaches the other limit position where a limit switch 99 is actuated to stop the drive belt 97 and a further unwinding of the web material from the supply roll 69

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to prevent. As an alternative solution, a timer can also be used. can be used to maintain the drive of the supply belt 97 for a certain period of time in which the Loop is to be made. It is not necessary to start and stop the rotation of the supply roll 69 every time when an envelope has been severed. This is preferred in that the supply roll is a considerable Has inertia and would turn several times per minute and would have to be stopped if one were mass production with high production speed has existed.

The vacuum boxes 89 extend partially around the press belt rollers 81, and the latter have a middle grooved Part to accommodate the arcuate part of the vacuum box, so that a pressure difference across the front and leading edges of the wrapping sheets can be built up, whereby one these to the grid-like or openwork press belt can attach or apply in such a way that the wrapping sheets continue to run with them without slippage or a relative sliding movement. As a result, the wrapping sheets Ha and Hb are aligned or in correspondence with each incoming stack 12 Objects held. The vacuum boxes 89 extend a sufficient distance along the press belt to ensure that even a stack 12 of only a minimal height is subjected to a compression before the Eönaüllbogen from the pressure difference are released, with the compressed objects hitting the wrapping sheets against the upper and lower press belts 19 and 20 hold.

The lower press belt 19 'is a mesh-like or openwork belt which moves along a substantially horizontal section across a supporting platen (not shown) towards its dispensing end, on which a rear drive roller 101 is located. From his arrival

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Drive roller 101 from the press belt runs down and back to a free roller 103 and then on
at the rear against the front idler roller 81. The upper press belt 20 runs away from its front idler roller 81 down and forwards along an inclined path, with the upper wrapping sheet Ha being held on the belt at a distance above the upper article of the stack 12 until the stack moves inward from its roller 81. The upper press belt 20 is also driven by a drive roller 101,
and has a free-running roller 103 in its return section against the front roller 81. The upper press belt 20 is further supported by a stationary platen (not shown) along its leading portion and the stack height is gradually and continuously decreased until a minimum stack height is reached on a fixed guide 102 which thus supports the upper press belt that it can move along a rectilinear path of movement to its drive roller 101 and through the binding station.

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Claims (20)

Claims Method of compressing and bandaging a
Stack of compressible objects,
characterized by the following
Steps: Forward conveying of the stack (12) of objects (13) along a predetermined path, moving wrapping sheets (14a, 14b), which form an endless belt (14) are to be combined »in contact with the stack (12), compressing the stack (12) by opposing forces and holding the stack (12) in the compressed state while the wrapping sheets (14a, 14b) are being placed thereon, and bringing them together and joining the ends of the wrapping sheets (14a, Hb) to form an endless belt (14) and canceling of opposing forces. ·, -, so that the band (H) pressed the objects (13) together in one State in a bandaged or bound pile (12) holds. 2. The method according to claim 1, characterized in that
characterized in that a web (21) of a wrapping material is unwound from a supply roll (69) and that individual wrapping sheets (Ha, Hb) are separated from the web (21). 3. The method according to claim 1, characterized
marked. that parts of the wrapping sheets (Ha, Hb) are folded into an overlapped position and the overlapped ends are joined by gluing the ends together. 209842/0656 to be united with each other. 4. The method of claim 1, wherein the ends of the wrapping sheets to be united with one another, thereby If known, I show that adhesive material (22, 23) is used to bind the ends together to form the endless belt (14). 5 · The method according to claim 3 »characterized in that the envelope sheets (Ha, 14b) are transported on upper and lower press belts (19, 20) and that a pressure difference at least is formed across the upper press belt (20) to hold a wrapping sheet (14a) thereon, so that it is moved into contact with the top of a stack (12). 6. The method according to claim 1, characterized characterized in that the sides (13a, 13b) of the objects (13) in the stack (12) aligned prior to the forward transport of the stack (12) for pressing will. 7. A method of bandaging and compressing a vertical stack of objects using a endless belt according to one or more of the preceding claims, characterized by the following process steps: Continuously forwarding a stack (12) of compressible objects (13) along a predetermined one Track, sensing the position of the stack (12) as it moves into a pressing and binding station (15), Severing wrapping sheets (14a, 14b) from at least one continuous web (21) of wrapping material, 209842/0656 Positioning a lower sheet envelope (Hb) underneath of the stack (12) and an upper wrapping sheet (Ha) on top of the stack (12), pressing together of the stack (12) of objects (13) in order to reduce the height of the "stack (12), splitting the ends of the lower one Wrapping sheet (Ha) up against the sides of the stack (12) and folding the ends of the top wrapping sheet (Hb) downwards, overlapping and gluing the ends of the envelope sheets (Ha, Hb) and exerting pressure on them Glue the ends of the sheet together and the tape (H) forming and canceling the pressing forces, the objects (13) in a compressed state in the stack (12) being held. 8. Apparatus for carrying out the method according to any one of claims 1-7, in which a stack can be compressed Objects pressed together and bandaged, characterized by a device for forwarding a stack (12) of objects (13) along a predetermined path, a device, which moves the wrapping sheets (Ha, Hb) in liner with the stack (12), a device for compressing the stack (12) on which the wrapping sheets (Ha, Hb) are located and for moving the stack (12) further, and by a device which brings the ends of the wrapping sheets (Ha, Hb) together so that they can be brought together, whereby the objects (13) are compressed into one Condition are durable. 9. Apparatus according to claim 8, characterized in that the device for Compression of the stack (12) contains two endless air-permeable belts (19, 20) which hold the stack (12) squeeze between them while they do the same 09842/0656 advance along the web and that a pressure differential across at least one of the air-permeable Belt (19, 20) is generated around an associated wrapping sheet (Ha, 14b) against relative movement to hold and move the same in contact with the stack (i2) of objects (13). 10. Apparatus according to claim 8, characterized characterized in that devices are provided which comprise a web (21) of a wrapping material support and unwind from a supply roll (69), and that further devices are provided from the web (21) separate individual wrapping sheets (Ha, Hb) from wrapping material, which are timed to move of the stack (12) are attached to the stack (12) along the path. 11. The device according to claim 10, characterized in that the devices for separating the wrapping sheets (Ha, Hb) from the web (21) first and second sets of conveyor rollers (75, 87) contained, which are arranged in the longitudinal direction of the web (21) at a distance from one another and the envelope sheet (Ha, Hb) and the train (21) transport that the 'train (21) has weakened zones (26) along which they can be separated when tensile forces are exerted on the web (21) is when the web (21) is in the nip of the two first and second sets of conveyor rollers (75, 87). 12. The device according to claim 11, characterized gekennzeichne t that devices (71) are provided, which an incoming stack (12), that is to be pressed, sense that devices 209842/0656 (S3, 85) can be actuated by these sensing devices (71) are to allow the first and second sets of conveyor rollers (75, 87) transport the web (21) and separate a 'wrapping sheet (14a, 14b) from the web (2Ϊ), and that devices (91) sense the movement of the web (21) to another weakened zone (26) between the first and to position the second set of conveyor rollers (75, 87) which will be used in the next conveyor operation of the sets of. Conveyor rollers (75, 87) is separated. 13. Apparatus according to claim 12, characterized by selectively actuatable devices (97) for unwinding the web (21) from the supply roll (69) and tension control devices (95, 96, 99) associated with the web (21) which are selectively operable Set devices (97) in function, -to the track (21) unwind from the supply roll (69). 14. Apparatus according to claim 13, characterized marked that the tension control devices (95, 96, 99) contain a dancer roller (95), that between a first limit position (96) in which it causes the selectively actuatable devices (97) continue to unwind the web (21) and move to a further limit position (99) in which unwinding the path (21) has ended. 15 · Device according to claim 8, characterized in that devices are provided which align the sides (13a, 13b) of the objects (13) in the stack (12) before it is compressed and that these aligning devices slide (39), which press against the rear sides (13b) of the objects (13) as well as lateral slides (41) 209842/0656 hold against the longitudinal sides Press (I3a) of the objects (13). 16. The device according to claim 15, characterized d. by two endless belts (37) running along opposite sides of the path of movement of the stack (12) are arranged, the endless Straps (37) guide the slide (39) and the side slide (41) into contact with the stack (12), around the stack (12) to be transported along the path of movement. 17. The device according to claim 8, characterized characterized in that knife devices (126) are provided which the envelope sheets (Ha, Hb) cut from the web (21), and that devices (125) are provided which apply an adhesive to the wrapping sheets Apply (Ha, Hb) to join their ends together and thereby bandage the objects (13). 18. The device according to claim 8, d a d u rc h gekennzeichne t that the devices, which bring the ends of the envelope sheets (Ha, Hb) together and unite them, a lower and an upper folding device (109 »113) contain the ends of the upper and fold the lower wrapping sheets (Ha, Hb) around the stack (12) so that the ends are in an overlapped position are brought, and that also devices (135) are provided which compress and pressurize the overlapped ends of the wrapping sheets while the stack (12) moves on continuously. 19. Apparatus for compressing and bandaging a vertical stack of disposable diapers according to one of claims 8-18, characterized 209842/0656 by a feeding conveyor and aligning device (33) for the objects with two endless belts (37), between which the stack (12) of angles (13) The slide is moved forward along a predetermined, essentially horizontal movement path (39, 41) carried by the endless belts (37) to be moved into abutment with the stack (12) and aligning it as it is further transported along the path, sensing means (71) the movement of the stack (12) into a position in which it receives the wrapping sheets (Ha, Hb), one through the discharge devices (71) actuatable device (75, 87) comprising an upper and lower wrapping sheet (Ha, Hb) from a continuous web (21) of wrapping material separates, an upper and lower continuous air-permeable press belt (19, 20) for pressing together of the stack (12) as it is conveyed forward along the path, devices (89) for generating a pressure difference across part of the press belts (19, 20) in order to bind the corresponding envelope sheets (Ha, Hb) to them and to synchronize them with the Movement of the stack (12) to move, the press belt (19, 20) the envelope sheet (Ha, Hb) in contact with the upper and lower disposable diapers (13) in the stack (12) hold, while the stack is compressed to a minimum, devices (109, 113) which the Fold the ends of the upper and lower envelope sheets (Ha, Hb) into overlapping layers and use devices (II5) to press the overlapped ends together to allow glue to the ends of the top and bottom wrapping sheets (Ha, Hb) connects to one another, and furthermore the endless press belts (19, 20) the compressed and hand in bandaged diapers (13). 209842/0 656 20. The device according to claim 19, characterized in that the devices for separating the three sheets of first and second sets of spaced apart conveyor rollers (75, 87) included, wherein the first set of conveyor rollers (75) is operable to apply a pulling force to the track (21) can exercise while it is held by the second set of conveyor rollers (87), whereby the web (21) is separable at a predetermined weakened zone (26) between the sets of conveyor rollers (75, 87). 200842/0656 Lee r side