JP2005538847A - A device that applies the outline of the adhesive to the crossed bags with the bottom folded - Google Patents

Abstract

Disclosed is a device (30, 100, 200) for glueing base labels (2) and/or folded bases (1) of tubular sections, which (1, 2) are used to form cross-base sacks (19). The device (30, 100, 200) comprises the following features: at least one first glue reservoir (101) or at least one glue-guiding opening (111 a, b) via which the glue is supplied; glue lines (110) transporting glue to the glueing points; a plurality of glue valves (32) which can be individually opened and closed, enabling the glue profile (4) to be defined by selectively opening the valves (32); glue outlets (71) associated with said valves (32); at least one second glue reservoir (102) enabling the second glue reservoir (102) to be impinged upon by pressure. The invention also relates to a method for forming a glue profile (4).

Description

  The present invention relates to an apparatus for forming an adhesive application profile on a bottom formed by folding a bottom sealing paper and / or a tubular portion in order to form a crossed bag with the bottom folded.

Although in a separate technical field from this application, devices that form an adhesive application profile for the bag components are known from the literature. The bag is then assembled using the bag components. DE 199 35 117 suggests a device for forming an adhesive application profile on a bag. The disclosed apparatus includes the following features. That is,
A plurality of adhesive valves that are opened and closed independently of each other, wherein the valves are selectively opened to form an adhesive application contour; and
-Adhesive piping connected to the valve;
The adhesive outlet assigned to the valve.

  In the device disclosed in DE 199 35 117, the adhesive first reaches the valve via the adhesive pipe and is pushed out of the adhesive outlet of the valve and applied to the drum. Thereafter, the drum transfers the adhesive to the bag components. However, no other publication, including DE 199 35 177, proposes to form a crossed bottom of the bag with the aid of such a device. In order to understand this fact, it is important to know about the manufacturing process for the various types of bags. From this point of view, the difference between a bag whose bottom is pinched and closed and a bag that is folded and crossed should be emphasized. Techniques for forming bags with crossed bottoms are disclosed, for example, in DE 090 145 48 U1 and DE 3020043A1. In order to apply the adhesive to the bottom sealing paper and the folded bottom, it is necessary to spread a large amount of adhesive for a large shape and size, and it is difficult to send such adhesive.

In addition, the contour to which the adhesive is to be applied is generally intermittent, that is, the adhesive is applied in an isolated manner only in certain areas for the desired bag components. No adhesive is applied to the middle gap.
In the case of crossed bags with folded bottoms, adhesive is applied to the folded bottom, or sealing paper for the bottom, or both to form a layer of adhesive and then overlap each other. Adapted.

In the prior art, in order to apply an adhesive to each component of the bag, a mold part (commonly referred to as a relief) is attached to a rotating roller, and the mold part is attached to the adhesive drum during the rotation of the rotating drum. It is immersed in the adhesive by contacting it with other adhesive storage elements. As the drum rotates further, the adhesive adhering to the surface of the mold part is transferred to the respective components of the bag.
For this purpose, the mold part is provided with a raised part, which is adjusted to match the shape and size of a particular bag. When manufacturing a bag of a different size using an apparatus for sealing the bottom of the bag, the mold parts are replaced.

DE 199 35 117 DE 090 145 48 U1 DE 3020043 A1

The adhesive application method described above proved to be successful when applied to a device that seals the bottom of a paper bag, as it can properly apply a large amount of starchy adhesive that is difficult to handle. Yes.
However, it is a disadvantage of such a device that the mold parts must be changed each time the bag shape and size are changed. In order to eliminate the need for mold parts, the adhesive may be pushed out from the valves arranged in a row, that is, the arranged adhesive valves, so as to have the shape and size of the adhesive application surface at the bonding station. First, however, it is necessary to overcome the difficulties associated with applying an adhesive using a valve.

An apparatus for achieving this object has the following features. That is,
At least one first adhesive reservoir or at least one adhesive inlet to be a source of adhesive;
-Adhesive piping for transporting the adhesive to the location where the adhesive is applied,
A plurality of adhesive valves that are opened and closed independently of each other, wherein the valves are selectively opened and closed to form an adhesive application contour; and
An adhesive outlet assigned to the valve;
At least one second adhesive reservoir, wherein the second adhesive reservoir is in communication with at least two valves and is pressurized;
A pressure reservoir as a means for pressurizing the second adhesive reservoir.

According to the device of the present invention, it is possible to guide the adhesive from the adhesive mixing device or the adhesive container to the location where the adhesive is applied. Where the adhesive is applied, a plurality of valves form the adhesive application profile and either push the adhesive directly against the bag components passing the adhesive outlet or DE 199 35 177 After the adhesive has been transferred to a transfer element such as a drum disclosed in US Pat.
By selectively opening the valve, different adhesive application profiles can be set. In order to supply the adhesive with at least two valves, the adhesive is stored in a common adhesive reservoir and / or the adhesive is introduced through such an adhesive reservoir. By such means, expensive adhesive piping elements can be saved and the valve can be filled with the same or equivalent pressure so that the same or equivalent adhesive sweep can be pushed out.

This adhesive reservoir corresponds to a pressure reservoir, according to which pressure fluctuations within the second adhesive reservoir are compensated or at least buffered within a fraction of a second.
There are many possibilities to realize such a pressure reservoir. According to an advantageous embodiment of the invention, the pressure reservoir contains a medium that is compressible under pressure.
Another possibility is to provide at least a third adhesive reservoir that keeps the adhesive at a higher pressure than the second adhesive reservoir.
Further exemplary embodiments of the invention can be devised from the detailed description and the claims.

The accompanying drawings also show a device according to the prior art, together with an adhesive application device for crossed bottom bags according to the present invention. The device according to the invention shown is for applying an adhesive only to the bottom sealing paper 2. However, according to this apparatus, the adhesive can be similarly applied to the bottom portion 1 which is folded and intersected with the bag.
FIG. 1 shows an adhesive application device that is commonly used to apply adhesive to the bottom sealing paper 2 according to the prior art. In this apparatus, the adhesive is transferred from the adhesive cylinder 11 to the mold part or letterpress 12, and the mold part or letterpress 12 is supported by the plate cylinder 13, and the mold part is centered on the axis of the plate cylinder 13. As shown in FIG. During this rotational movement, the mold part or letterpress 12 transfers the adhesive to the bottom sealing paper 2, and the bottom sealing paper is conveyed by the gripping cylinder 14 during the transfer of the adhesive. The bottom sealing paper 2 is conveyed in advance in the direction of the arrow X along the broken line 18 by a conveying device (not shown) in advance, and passes through the gap between the plate cylinder 13 and the gripping cylinder 14. When the gripping cylinder 14 rotates in the direction of the arrow 15, the sealing paper coated with the adhesive is superimposed on the bottom 1 of the bag, and the bottom 1 of the bag is placed in the direction of the arrow W by a transport device (not shown). It is conveyed to. Thus, the bottom 1 of the bag 19 is sealed. A pressing force acts between the gripping cylinder 14 and the bag transport device to bring the sealing paper 2 and the bottom of the bag into pressure contact with each other and permanently bond them.

FIG. 2 shows another commonly used adhesive application device 20 for applying adhesive to the bottom 1 of a bag. For this reason, the mold parts or relief plates 12 attached to the outer periphery of the plate cylinder 13 come into contact with the adhesive transfer cylinder 28 when the plate cylinder 13 rotates in the direction of the arrow 16 about its axis 25, and the adhesive Adheres. For this reason, the mold part is formed with notched recesses (not shown), and these recesses are filled with an adhesive when contacting the adhesive transfer drum 28.
The adhesive transfer drum 28 squeezes the opening of the adhesive reservoir 21, and when this drum rotates, the adhesive is transferred from the adhesive reservoir 21 to the relief plate 12 along its circumference.

When the plate cylinder 13 further rotates, the mold part or the relief plate 12 reaches the gap 24 between the cylinder 29 and the plate cylinder 13. Here, the relief plate 12 transfers the adhesive to the bottom 1 of the bag. The bag is conveyed in advance along the broken line 26 by a conveying device (not shown) and passes through the gap of the drum.
In the bonding stations 10 and 20 shown in FIGS. 1 and 2, when changing the bag shape and size, the mold part 12 must be replaced with another mold part corresponding to the new bag shape and size. I must.

  FIG. 3 shows a station 30 for applying adhesive to the sealing paper for the crossed bottom of the bag according to the present invention, the individual separating paper 2 being conveyed in the direction of the arrow X, An adhesive sweep line 3 is applied. For this purpose, the bonding station 30 is provided with a coating head 31. The adhesive is sent to the application head through the pipe 33. Inside the coating head 31, the adhesive is distributed to the valves 32 by an appropriate adhesive supply line. In the coating head 31, two rows of valves are arranged in a direction crossing the conveying direction X of the sealing paper 2. Yes. These valves 32 can at least release the adhesive and stop the release. The valve 32 is controlled by an external, preferably electrical signal, and can withstand the pressure of the adhesive.

An adhesive outlet 71 is provided below the coating head 31 that is not visible in the figure, and the adhesive is discharged from the coating head 31 through the outlet, whereby the adhesive sweep line 3 is formed. It is formed. An arrow X indicates the conveyance direction of the sealing paper 2, and an arrow Y indicates a horizontal direction orthogonal thereto.
FIG. 4 shows a bonding station 30 that is identical in appearance to the bonding station of FIG. Different adhesive sweep lines 44-47 indicate that the device can be applied in almost different forms without the use of mold parts or letterpress. According to this apparatus, the spread of the adhesive application region in the width direction of the relief printing, that is, the Y direction can be changed by switching on / off the valve 32 during the production of the bag. Here, the valve is not opened over the entire period of applying adhesive to the sealing paper 2 or over the entire period of applying adhesive to the bottom of a bag of a particular shape and size. It is switched off accordingly. As a result, as shown in FIG. 3, a rectangular adhesive-coated surface shape can be obtained by the adhesive sweep lines 3 and 47 having approximately the same length.

However, not only for this purpose, the valve, which is open while applying the adhesive in a predetermined shape and size, is closed once after forming the continuous adhesive sweep line 47, When the next sealing paper 48 that has not yet been coated with adhesive reaches the adhesive outlet, it is opened again. In order to apply this sequence to a general adhesive application speed, a considerable requirement is required for the switching time of the valve 32. If the shape and size of the adhesive to be applied and the amount of the adhesive to be applied are further changed, the valve 32 opens and closes faster than when the continuous adhesive sweep line 47 is formed. Must.
Thus, the amount of adhesive applied can be varied considerably, particularly by applying the adhesive as a sweep line 44 that breaks several times. In order to further change the shape and size of the adhesive application surface to be different from the rectangular shape, the adhesive may be applied as the short sweep line 45 and the interrupted sweep line 46. For example, as shown in FIGS. 5 (a) and 5 (b), 4a) U-shaped or 4b) rectangular frame-shaped shape 4 of the adhesive application surface is often required. This requires separate control of the valves during application of the adhesive to the bag components 1 and 2.

In a device for sealing the bottom of the bag, it is advantageous if the switching time of the valve 32, ie the on / off switching time, is shorter than 5 ms. In such a case, by changing the sweep line of each adhesive in the X direction, the shape of the adhesive application surface required in the industry at the generally adopted application speed of the adhesive as described above. And most variations in size can be realized.
In the apparatus according to the present invention, if the valve can be switched on and off at a higher speed, it will be possible to imagine how many application shapes can be obtained by looking at the diversity of the sweep lines 45 to 48 of the adhesive. .

The bonding station according to the embodiment of the present invention shown in FIGS. 3 and 4 is suitable for applying adhesive to separately separated sealing paper and also applies adhesive to a piece of paper before being separated. be able to. In the case of the bottom of the bag, the adhesive can be applied in a similar manner.
In the embodiment shown in FIG. 3 and FIG. 4, the second pressure reservoir 102 constitutes an adhesive pipe (not shown) together with the pipe 33 inside the coating head 31. A pressure regulator 105 is provided at the end. It is advantageous if this pressure regulator, or other valve that couples the second adhesive reservoir to the pressure reservoir, has an opening and closing time of less than 5 ms. If the pressure regulator is configured as a passive element, it should be able to respond within 5 ms.

  As described above, FIGS. 5 (a) and 5 (b) show the adhesive application shapes of the two sealing papers 2, 4a) U-shaped and 4b) rectangular. The shape of the U-shaped adhesive application is constituted by a continuous sweep line 3 of adhesive and a short sweep line 45 of adhesive. The shape of the adhesive application of the rectangular shape 4b) is constituted by an adhesive continuous sweep line 3 and an adhesive sweep line 46 interrupted halfway. By selectively controlling the adhesive valve 32 during application of adhesive to the bag components 1 and 2, different types of adhesive sweep lines can be realized.

All embodiments of the present invention are not only suitable for applications where the adhesive is applied directly to the bag components, but first the drum or other form before applying the adhesive to the bag components. It is equally suitable for indirect application of adhesives, such as those applied to the body.
FIG. 6 is a schematic diagram showing the configuration of a complex apparatus 100 according to the present invention. The first adhesive reservoir 101 includes an adhesive inlet funnel 111a for introducing an adhesive into the apparatus, an adhesive supply pipe 111b, an adhesive tank 111c, and an adhesive pipe 110 that is more adhesive than the pump 106. And a portion on the upstream side in the transport direction.
The pump 106 pushes the adhesive into the third adhesive reservoir 103, and the third adhesive reservoir includes a portion of the adhesive pipe 110 on the downstream side of the pump 106, an adhesive tank 113, and the like. The portion of the adhesive pipe 110 between the adhesive tank 113 and the pressure regulator 105 is configured. The third adhesive reservoir 103 is in a higher pressure state than the second adhesive reservoir 102. Thus, the third adhesive reservoir serves as a pressure reservoir for the second adhesive reservoir 102.

  The pressure regulator 105 feeds the adhesive from the third adhesive reservoir to the second adhesive reservoir. The pressure regulator reduces the pressure that reaches the second adhesive reservoir 102. Similarly to the other two adhesive reservoirs, the second adhesive reservoir 102 is also composed of parts of adhesive pipes 110, 114, 115, 116, 117, 118, which are respectively closed valves. Therefore, the pressure state is the same as that of the adhesive tank 112.

In operation of the device 100 according to the invention, the adhesive reaches the valve 32 after passing through the adhesive tank 112, which in this embodiment may be of very small capacity. The valve is opened and closed according to the shape and size of the adhesive application surface to be formed, whereby the adhesive flows into the upper adhesive passage 72. A part of the upper adhesive passage 72 is branched inside the coating head 31 to form a lower adhesive passage 73, which is opened as an adhesive outlet 71. In the adhesive application process, the adhesive is discharged from the application head 31 via these adhesive outlets and applied directly or indirectly to the bag components 1 and 2. The
However, the second adhesive reservoir 102 can be emptied by another method. The adhesive can flow out to the adhesive discharge container 131 through the adhesive discharge pipe 116 and the outlet valve 122. Thereby, the replacement | exchange of an adhesive agent and / or rapid pressure reduction can be performed. When cleaning is performed, a cleaning medium such as water or compressed air is sent to the cleaning medium pipe 118. In particular, when liquid cleaning media are used, a collection container 130 is preferably provided to collect these media. The cleaning medium discharge pipe 119 and the outlet valve 121 are directly attached to the second adhesive reservoir.

The adhesive can be periodically circulated between the first adhesive reservoir 101 and the second adhesive reservoir 102 by an adhesive discharge pipe 114. In this case, the adhesive is preferably passed through the pressure reducing valve 123.
The pressure measuring devices 132 and 133 directly measure pressures in the second adhesive reservoir and the third adhesive reservoir. These pressure meters may be required to monitor that the adhesive has been applied correctly. It is even possible to control in real time the amount of adhesive applied and other process parameters.

  FIG. 7 illustrates another embodiment 200 according to the present invention. Similarly, this embodiment includes three adhesive reservoirs 101, 102, and 103, and the third adhesive reservoir 103 simultaneously serves as a pressure reservoir for the second adhesive reservoir. Unlike the embodiment shown in FIG. 6, the second adhesive reservoir 102 and the third adhesive reservoir 103 are divided into sub-reservoirs 102a-d and 103a, b. The sub-reservoirs 102a to 102d include gas cushions (not shown) inside the adhesive tanks 112a to 112d. These gas cushions serve as additional pressure reservoirs for the second adhesive reservoirs 102a-d. Another difference from the above-described embodiment 100 is that the adhesive pipe 117 described above with reference to FIGS. 3 and 4 extends inside the coating head 31. In the present embodiment, such an adhesive pipe 117 and / or adhesive pipe 33 makes it possible to utilize most or all of the volume of the second adhesive reservoir 102.

  Furthermore, the second adhesive is continuously supplied from the adhesive preparation facility prepared by mixing and stirring the components of the starchy adhesive via the adhesive pipes 101, 102, 103, 105, 106, 110 without interruption. It is advantageous to direct the adhesive to the reservoir. In such cases, the adhesive compounding central facility in the bag manufacturing plant is functionally the same as the first part in the first adhesive reservoir 101. However, the facilities for preparing the adhesive may be dispersed without being centralized and each of them may be placed in the apparatus of the present invention.

FIG. 1 is a view showing an adhesive application device for sealing paper at the bottom of a bag according to the prior art. FIG. 2 is a diagram showing an apparatus for applying an adhesive to the crossed bottoms of bags according to the prior art. FIG. 3 shows an adhesive application device according to the present invention. FIG. 4 is a view showing a state in which the adhesive is applied in a complicated form by the adhesive application device according to the present invention. FIG. 5A is a view showing the sealing paper 2 in which the shape of the adhesive application surface is U-shaped. FIG. 5B is a diagram showing the sealing paper 2 in which the shape of the adhesive application surface is a rectangular frame. FIG. 6 is a diagram schematically showing the structure of the apparatus according to the present invention. FIG. 7 is a diagram schematically showing the structure of another apparatus according to the present invention.

Explanation of symbols

x: direction in which the sealing paper is conveyed y: direction orthogonal to the conveying direction of the sealing paper (horizontal direction)
z: Direction perpendicular to the conveying direction of the sealing paper (vertical direction)
W: direction in which the bottom 1 of the bag is conveyed 1 ... bottom of the bag 2 ... sealing paper 3 ... sweep line of adhesive 4 ... rectangular adhesive application surface 4a) ... U-shaped adhesive application surface 4b) ... rectangular Frame-like adhesive application surface 10 ... Adhesive application device for sealing paper according to the prior art 11 ... Adhesive cylinder 12 ... Mold parts or relief plates 13 ... Plate cylinder 14 ... Gripping cylinder 15 ... Rotation direction of the gripping cylinder 16 ... Plate Rotating direction of cylinder 17: Rotating direction of adhesive cylinder 18 ... Broken line 19 ... Bag 21 ... Adhesive reservoir 24 ... Gap 25 ... Cylinder axis 26 ... Dotted line indicating bag conveyance path 27 ... Rotating direction of cylinder 28 ... Adhesion Agent transfer cylinder 29 ... Pressing cylinder 30 ... Adhesive coating device 31 according to the present invention 31 ... Coating head or coating plate 32 ... Valve 32n ... nth valve in valve train 33 ... Adhesive piping 44 Adhesive sweep line interrupted at regular intervals 45... Short adhesive sweep line 46. Interrupted adhesive sweep line 47. Continuous adhesive sweep line 48... Non-adhesive sealing paper 71. ... upper adhesive passage 73 ... lower adhesive passage 100 ... device according to the first embodiment of the present invention 101 ... first adhesive reservoir 102 ... second adhesive reservoir 102a-d ... second lower reservoir 103 ... Third adhesive reservoir 103a-d ... Third lower reservoir 105 ... Pressure regulator 106 ... Pump 110 ... Adhesive pipe 111a ... Adhesive inlet funnel 111b ... Adhesive pipe 111c ... First adhesive tank 112 ... First 2 adhesive tanks 112a-d ... adhesive tank 113 in lower reservoirs 102a-d 113 ... third adhesive tank 114 ... adhesive discharge pipe 115 ... cleaning medium Inlet valve 116 for ... Adhesive discharge / decompression pipe 117 ... Adhesive supply pipe 118 in application head 118 ... Cleaning medium supply pipe 119 ... Cleaning medium discharge pipe 121 ... Cleaning medium discharge valve 122 ... Adhesive discharge / decompression valve 123 ... Pressure reducing valve 124 in the adhesive discharge pipe 114... Cleaning medium introduction valve 130... Cleaning medium discharge container 131. Adhesive discharge container 132. Pressure meter in the second reservoir 133. Pressure meter in the third reservoir 200. Device according to the second embodiment

Claims (19)

In order to form a crossed bag (19) with the bottom folded, an adhesive application profile is formed on the bottom sealing paper (2) and / or the bottom (1) with the tubular portion folded. Device (30, 100, 200) for the device (30, 100, 200)
At least one first adhesive reservoir (101) or at least one adhesive inlet (111a, b) to be a source of adhesive;
An adhesive pipe (110) for transporting the adhesive to the location where the adhesive is applied;
A plurality of adhesive valves (32) that are opened and closed independently of each other, wherein the valve (32) is selectively opened to form an adhesive application profile (4);
An adhesive outlet (71) assigned to the valve (32);
At least one second adhesive reservoir (102), wherein the second adhesive reservoir is in communication with at least two valves (32);
A pressure reservoir (103) as means for pressurizing the second adhesive reservoir (102);
A device characterized by comprising: In the device,
The pressure reservoir (103) comprises a compressible medium, preferably a gas such as air, which is in a pressurized state;
The apparatus according to claim 2. In the device,
The pressure reservoir (103) is composed of at least a third adhesive reservoir (103), and the pressure of the adhesive inside the pressure reservoir (103) is higher than the pressure of the adhesive inside the second reservoir (102). Pressure,
The apparatus according to claim 1 or 2, characterized in that In the device,
At least one third adhesive reservoir (103) is disposed between the first adhesive reservoir (101) and the second adhesive reservoir (102) according to the direction in which the adhesive is transported. ,
The apparatus according to claim 3. In the device,
At least one second adhesive reservoir and at least one third adhesive reservoir are coupled to each other via a pressure regulator (105);
The apparatus according to claim 4. In the device,
The pressure regulator (105) includes a valve that can open and close the connection between the second adhesive reservoir and the third adhesive reservoir, and the opening operation time and the closing operation time of the valve are 5 ms, respectively. Is less than
The apparatus according to claim 5. In the device,
At least one pump (106) is provided between the first adhesive reservoir (101) and the third adhesive reservoir (103), and the adhesive is supplied to the third adhesive by the pump. Pushed into the reservoir (103),
The apparatus according to claim 4, 5, or 6. In the device,
A third adhesive reservoir (103) communicates with the pressure reservoir;
An apparatus according to any one of claims 4 to 7, characterized in that In the device,
At least one third adhesive reservoir is configured by connecting a plurality of adhesive pressure levels in series;
An apparatus according to any one of claims 3 to 8, characterized in that In the device,
At least one pressure reducing valve (122);
The pressure reducing valve is directly connected to the second adhesive reservoir (102), and the pressure of the at least one second adhesive reservoir (102) can be reduced by the pressure reducing valve.
10. A device according to any one of the preceding claims. In the device,
The at least one pressure reducing valve (122) can depressurize at least one second adhesive reservoir to atmospheric pressure;
The apparatus according to claim 10. In the device,
In addition to the adhesive supply device (101, 102, 103, 105, 106, 110) for guiding the adhesive toward the valve (32), an adhesive discharge device (114) is provided, and the adhesive discharge device Makes it possible to discharge the adhesive from the valve (32) without passing the adhesive through the valve (32).
12. A device according to any one of the preceding claims, characterized in that In the device,
By causing the adhesive supply device (101, 102, 103, 105, 106, 110) and the adhesive discharge device (114) to cooperate, the adhesive is circulated in the device (100, 200) and / or Or it is possible to change the adhesive,
The apparatus according to claim 12. In the device,
Pressure meter (132, 133)
A second adhesive reservoir (102) or
Provided in at least one of the third adhesive reservoir (103),
14. Apparatus according to any one of claims 3 to 13, characterized in that In the device,
The at least one second adhesive reservoir is provided with an additional supply and / or drain (119), through which a cleaning medium such as water or compressed air can be introduced,
10. A device according to any one of claims 2 to 9, characterized in that In the device,
An adhesive container (131) and / or a water container (130) is provided, and the replaced adhesive or used water discharged from the adhesive supply device is collected in the container.
The apparatus according to claim 8 or 10, characterized in that In the device,
At least one first adhesive reservoir (101) or at least one adhesive inlet (111a, b) to be a source of adhesive is provided with an adhesive stirrer, The starchy adhesive can be obtained by adding the starchy adhesive components such as starch and water into the mixture and stirring them.
A device according to any one of the preceding claims. In order to form a crossed bag (19) with the bottom folded, an adhesive application profile is formed on the bottom sealing paper (2) and / or the bottom (1) with the tubular portion folded. A method for
The method is
Adhesive is supplied to the adhesive transport device (101, 102, 103, 110, 111) via at least one first adhesive reservoir (101) or at least one adhesive inlet (111a, b). And the stage of
Transporting the adhesive from the adhesive transport device (101, 102, 103, 110, 111) to the location where the adhesive is applied by the adhesive pipe (110);
Driving the valve (32) and pushing the adhesive against the bag components (1, 2) via the assigned adhesive outlet (71),
By selectively driving the valve, an adhesive application contour (4) is formed,
The adhesive passing through the adhesive transport device first passes through the third adhesive reservoir (103) and then into the second adhesive reservoir (102), where the second adhesive reservoir (102) has at least two Communicating with the valve (32)
The pressure of the third adhesive reservoir (103) is higher than the pressure of the second adhesive reservoir (102).
A method characterized by that. In said method,
The period when the at least one valve (105) connecting the second adhesive reservoir (102) and the third adhesive reservoir is opened and closed is such that the bag components are adhesive application devices (30, 100). , 200), and the same cycle as passing through
The method according to claim 18, wherein:

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