JP3628736B2 - Method and apparatus for cooling continuous belt-like packaging bag - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a cooling method and apparatus for a continuous packaging bag, in which seasonings and other liquids, viscous substances and the like that have been pasteurized at high temperatures are continuously packaged in a bag at a high temperature.
[0002]
[Prior art]
For example, as a conventional method for cooling a liquid packed and packaged at a temperature of about 95 ° C., and in some cases a viscous substance, to a temperature of about 35 ° C., the formed continuous belt-shaped packaging bag is run in a water tank of a cooling means. In this case, water droplets attached to the continuous belt-shaped packaging bag taken out from the water tank are dropped by air blow.
[0003]
[Problems to be solved by the invention]
However, it is extremely difficult to completely remove all water adhering to the continuous belt-shaped packaging bag that has been run in the water tank by air blow alone, and it is located outside the heat seal area of the vertical seal part of the packaging bag. For air that has entered between the overlapping side ends of the packaging film, air blow cannot substantially exhibit the moisture removal function, so the continuous belt-shaped packaging bag after cooling has Adherent moisture always remains, and there is a hygienic problem that the residual moisture causes dust to be adsorbed to the packaging bag and also causes mold.
[0004]
The present invention has been made as a result of studying to solve such problems of the prior art, and the object of the present invention is to immerse the continuous belt-shaped packaging bag in cooling water or other refrigerant. Therefore, it is intended to provide a cooling method and apparatus for a continuous belt-shaped packaging bag that can reliably prevent the refrigerant from remaining on the continuous belt-shaped packaging bag and thereby greatly improve the hygiene of the packaging bag.
[0005]
[Means for Solving the Problems]
The cooling method for the continuous belt-like packaging bag according to the present invention is such that the continuous belt-like packaging bag filled with the high-temperature liquid is placed between the continuous belt-like packaging bag and the transporting device by the endless transporting device in which only the return side is precooled by the refrigerant. Based on heat exchange, it conveys, cooling in a dry state.
The cooling device for the continuous belt-shaped packaging bag of the present invention is provided with an endless transport means for transporting the continuous belt-shaped packaging bag filled with a high-temperature liquid, and only the return side of the transport means is gas-cooled, liquid-cooled by a refrigerant. In addition, a continuous roll-shaped packaging bag is provided with a feed roll to the conveying means and a take-out roll therefrom.
Preferably, the continuous belt-like packaging bag is provided on the surface of the conveying means, for example, provided with a traveling pressing means that wraps a rubber ring around each rotatable roll that presses the entire length of the conveying means. The transport means is an etine conveyor such as a flat top conveyor, a slat conveyor, and an apron conveyor having a flat mounting surface of a continuous belt-shaped packaging bag. In this case, the flat mounting surface of the transport means is a metal plate, For example, it is more preferable to use a material having high thermal conductivity such as an aluminum-based metal or a copper-based metal.
Furthermore, preferably, the respective transporting means that run in the opposite direction within the same plane and perform direct delivery of the continuous belt-shaped packaging bags are arranged adjacent to each other in parallel, and the continuous belt-like shape is formed on the surface of each transporting means. Each travel pressing means for pressing the packaging bag is provided.
[0006]
[Action]
In the method of this invention, the continuous packaging bags filled sealed hot liquid, hence, the enclosed liquid into their this, while being conveyed by the conveying means, is cooled continuous packaging bag without immersed in the coolant Therefore, the refrigerant does not remain attached to the continuous packaging bag, and therefore no sanitary problem due to the adhering refrigerant remaining occurs.
Further, in the apparatus of the present invention, the return side of the conveying means is cooled in advance by the refrigerant of the cooling means, and the continuous belt-like packaging bag is transferred on the cooled carrying means, thereby transferring the continuous belt-like packaging bag and Based on the heat exchange with the conveying means, the continuous belt can be cooled at the same time as the transfer of the continuous bag without wetting the continuous belt with the refrigerant. There is no adhesion remaining.
[0007]
Here, when the continuous band-shaped packaging bag is pressed against the surface of the conveying means with the travel pressing means, preferably over almost the entire length thereof, the contact area of the continuous band-shaped packaging bag to the conveying means is sufficiently increased to perform heat exchange. The efficiency, in other words, the cooling efficiency of the continuous packaging bag can be increased. In addition, this is substantially the same when the conveying means is a chain conveyor having a flat placing surface, and this also increases the contact area of the continuous belt-like packaging bag and increases its cooling efficiency. be able to.
In addition, when the flat mounting surface of the conveying means is formed of a metal plate, particularly a metal plate having high thermal conductivity, more preferably a large specific heat, the cooling efficiency of the continuous belt-shaped packaging bag is further improved. This can be further improved.
[0008]
By the way, in the case where a plurality of conveying means are arranged adjacent to each other in parallel, even with a single conveying means, even when sufficient cooling cannot be performed, a continuous strip-shaped packaging bag under a small occupied space Can be cooled as expected.
[0009]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a partial cross-sectional schematic side view showing an embodiment of the present invention. In the figure, reference numeral 1 denotes a continuous belt-shaped packaging bag filled and filled with a high-temperature liquid.
Conveying means here has a flat mounting surface of the transported material, constituted by Tsu by the flat top conveyor 2, the flat top conveyor 2, the chain sprocket 5, 6 mounted on respective rotary shafts 3, 4 At the same time, the slack on the conveying side of the conveyor 2 is removed by the support roller 7. As a result, the conveyor 2 runs counterclockwise by using, for example, the rotary shaft 3 positioned on the left side of the drawing as the drive shaft and the chain sprocket 5 fixed thereto as the drive sprocket. Thus, in this example, chain sprocket 6 attached to the right side of the rotating shaft 4 is the driven sprocket.
The return side portion of the flat-top conveyor 2 driven in this way is moved into the cooling liquid 9 of the cooling means 8 which is a liquid cooling means provided with a cooling liquid tank here, so that the return side portion is required. Enable cooling according to the conditions.
[0010]
On the other hand, on the conveyance side of the flat top conveyor 2, each of the feeding roll 10 and the taking-out roll 11 of the continuous belt-shaped packaging bag 1 positioned corresponding to each of the conveyance start end portion and the conveyance end portion is connected to the respective rotation shaft 3. , 6 and the two rolls 10 and 11 are rotated in synchronization with each other in the same direction.
Meanwhile, the flat top conveyor 2, the air blow nozzle 12 is provided in the exit portion of the cooling means 8, by From there ejection air, blown to remove the cooling liquid 9 adhering to the conveyance surface of the cooled conveyor 2. In addition, when sufficient removal of the attached cooling liquid cannot be performed only with the blown air, instead of or in addition to the air blow nozzle 12, the porous liquid that adsorbs the attached cooling liquid by contacting the conveyor conveyance surface. A material wiping roll can also be provided.
[0011]
Further, here, on the conveying side of the conveyor 2, traveling pressing means 13 that presses the continuous belt-shaped packaging bag 1 is provided on the conveying surface thereof, and the traveling pressing means 13 is provided between the feeding roll 10 and the taking-out roll 11. An endless belt-like material having a large friction coefficient with respect to the packaging bag 1, for example, a rubber ring 16, is wound around the respective rotatable rolls 14 and 15. Here, it is preferable to urge the entire pressing means 13 toward the conveying surface side of the conveyor 2 by a spring means or the like (not shown) in order to secure a required pressing force. , in an intermediate position 15 to restrain the deflection of the rubber ring 16 that per the action side, be provided with at least one support roll it is preferable in order to generate a uniform pressing force over the entire length.
[0012]
In addition, in this example, a cooling blower 18 that directly cools the continuous belt-shaped packaging bag 1 is attached to a housing 17 that preferably surrounds the flat-top conveyor 2, the cooling means 8, etc. To assist when the cooling capacity of the continuous packaging bag 1 by the flat top conveyor 2 is insufficient. In order to make this cooling blower 18 function effectively, the width of the rubber ring 16 of the travel pressing means 13 is made as narrow as possible so that the contact area of the continuous belt-shaped packaging bag 1 with the wind from the blower 18 is sufficiently large. It is preferable to adjust.
[0013]
When cooling the continuous belt-like packaging bag 1 and thus the packaging liquid therewith, the flat top conveyor 2 is run and the return side thereof is cooled by the cooling means 8 as expected, The cooling liquid adhering to the conveyor conveyance surface is sufficiently removed by the air blow nozzle 12 and other actions, and the continuous packaging bag 1 is conveyed through the feed roll 10 under the condition that the cooling portion reaches the conveyance side. 2 is sent onto the mounting surface.
Thus, a continuous belt-like packaging bag 1 while being pressed against the conveyor mounting surface by running the pressing means 13, under a sufficiently large contact area thereof both without causing slip relative to the mounting surface, take-out roll side Is taken out of the apparatus. In such transport of the continuous packaging bag 1, the rubber ring 16 of the travel pressing means 13 travels together with the continuous belt-shaped packaging bag 1 under frictional contact.
[0014]
By the way, when such a continuous belt-shaped packaging bag 1 is conveyed, the packaging bag 1, and thus the high-temperature liquid packaged there, is a flat-top conveyor 2 that has been cooled in advance, and preferably a metal plate. The plate is sufficiently cooled by exchanging heat with the flat mounting surface. In this case, when the metal plate is made of a material having a high thermal conductivity such as an aluminum-based metal or a copper-based metal, the cooling efficiency can be further increased. In addition, the metal plate is a metal plate having a large specific heat. Sometimes, the amount of heat absorbed by the metal plate can be increased to further improve the cooling efficiency.
Here, in order to further improve the cooling efficiency, the cooling blower 18 and the exhaust fan 19 are operated to cause direct cooling by the wind of the continuous packaging bag, and to reduce the temperature in the housing. Is effective.
Thus, here, the continuous strip-shaped packaging bag 1 is cooled by the conveyor 2 that has been cooled in advance and from which the attached cooling liquid has been sufficiently removed, and the continuous packaging bag 1 comes into contact with the cooling liquid 9. Therefore, there is no possibility that the coolant 9 adheres and remains on any part of the continuous packaging bag 1, and therefore, adhesion of dust to the packaging bag 1, generation of mold on the packaging bag 1 and the like can be reliably prevented. It will be.
[0015]
FIG. 2 is a schematic line exploded perspective view showing another embodiment of the present invention with the cooling means 8 and the housing 17 removed, and the continuous belt-like packaging bag can be sufficiently cooled with only one conveying means. It is used when not.
This is one in which the required number of conveying means, in this case flat-top conveyors, that are driven to run in opposite directions are arranged adjacent to each other. Each is shared by all flat top conveyors 2, 22, 32, 42. For this reason, in this example, the rotary shaft 3 is driven counterclockwise and the rotary shaft 4 is driven in synchronization clockwise, and the conveyors 2, 32 are spaced apart from the rotary shaft 3 in the length direction thereof. The chain sprocket 5 for driving is fixed while the chain sprocket for the conveyors 22, 42,... Is rotatably mounted. ... A chain sprocket for driving is fixed, and sprockets 6 for the conveyors 2, 32.
[0016]
Further, here, the long feed roll 10 and the long take-out roll 11 that are common to the respective conveyors 2, 22, 32, 42,... 4 is arranged in parallel with each other, and between the two rolls, the respective travel pressing means 13... Positioned corresponding to the respective conveyors 2, 22, 32, 42.
According to this apparatus , the continuous belt-shaped packaging bag 1 fed onto the flat top conveyor 2 by the feeding roll 10 is transported while being cooled under the action of the travel pressing means 13 as in the case described above. It reaches the take-out roll 11, where it is wound upward on the take-out roll 11 from below and fed onto the adjacent conveyor 22. The conveyor 22 also transports the continuous belt-like packaging bag 1 back to the feeding roll 10 while cooling it in a pre-cooled state, and the feeding roll 10 sends the continuous packaging bag 1 to the roll 10. In a state where it is wound from the lower side, it is further fed onto the adjacent conveyor 32. Similarly, the continuous belt-shaped packaging bag 1 is conveyed while being cooled to the final conveyor, and after the bandaging bag 1 is sufficiently cooled, the continuous belt-shaped packaging bag 1 is taken out of the apparatus through the take-out roll 11.
[0017]
3, the continuous strip-like packaging bag 1, the conveying cooling mode as described above, a plan view illustrating removal of the traveling pressing means, reference numeral 23 is a conveyor drive motor, 24, normal and reverse rotation device Respectively.
According to such an apparatus, the continuous belt-like packaging bag 1 is always sufficiently cooled in the dry state by the transport cooling action of the respective conveyors 2, 22, 32, 42,. can do. In addition, when the continuous belt-shaped packaging bag 1 is cooled to a predetermined temperature before reaching the final conveyor, it can be taken out of the apparatus from the intermediate position of the apparatus via the take-out roll 11.
[0018]
As described above, according to the present invention, the continuous belt-shaped packaging bag 1 enclosing a high-temperature liquid is cooled and conveyed while being kept dry by one or more conveying means cooled in advance. The packaging bag 1 is reliably prevented from fouling of the packaging bag 1 due to the fact that the packaging bag 1 is immersed in the coolant, in particular the cooling liquid 9, and the cooling liquid adheres and remains on the continuous packaging bag 1. the generation of dusts adsorbed and molds of the dressing bag, which can also be removed reliably.
[0019]
【The invention's effect】
Thus, according to the method of the present invention, since the packaging bag can be sufficiently cooled without directly contacting the continuous belt-shaped packaging bag with the refrigerant, the packaging bag is in contact with the refrigerant, and All hygiene problems caused by the refrigerant remaining on the packaging bag can be eliminated.
In the apparatus of the present invention, the continuous belt-like packaging bag can be cooled at the same time as the conveyance without contacting the refrigerant with a simple and small device, and the continuous belt-like packaging bag is pressed against the surface of the conveying means. If the travel pressing means is provided, it can be brought into contact with the surface of the transport means reliably and with a wide contact area without increasing the running resistance of the continuous packaging bag. Cooling efficiency can be improved effectively.
[0020]
The cooling efficiency is further improved when the conveying means is a chain conveyor having a flat mounting surface, and the contact area between the mounting surface and the packaging bag is increased. When a metal plate is used to increase the thermal conductivity, this is further improved.
Further, in this apparatus, when a plurality of conveying means that are driven to run in opposite directions are arranged in parallel adjacent to each other and a continuous belt-shaped packaging bag is sequentially conveyed forward and backward, one Even when the continuous packaging bag cannot be sufficiently cooled only by the conveying means, it is possible to perform cooling as expected under a relatively small occupied space.
[Brief description of the drawings]
FIG. 1 is a partially sectional schematic side view showing an embodiment of the present invention.
FIG. 2 is an exploded perspective view of an essential part showing another embodiment of the present invention.
3 is a plan view showing an operation state of the apparatus shown in FIG. 2; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Continuous strip | belt-shaped packaging bag 2,22,32,42 Flat top conveyor 3,4 Rotating shaft 5,6 Chain sprocket 7 Support roller 8 Cooling means 9 Cooling liquid 10 Feeding roll 11 Take-out roll 12 Air blow nozzle 13 Traveling press means 14, 15 rolls 16 rubber ring 17 housing 18 cooling fan 19 exhauster 23 conveyor drive motor 24 forward and reverse rotation device

Claims (6)

Conveying a continuous belt-shaped packaging bag filled with high-temperature liquid while cooling it in a dry state based on heat exchange between the continuous belt-shaped packaging bag and the transporting means by an endless transport means that is cooled in advance only on the return side with a refrigerant. A method for cooling a continuous packaging bag, comprising: An endless transport means for placing and transferring a continuous belt-shaped packaging bag filled with a high-temperature liquid; a cooling means for cooling only the return side of the transport means with a refrigerant; and a roll for feeding the continuous belt-shaped packaging bag to the transport means; And a continuous belt-like packaging bag cooling device comprising a take-out roll therefrom. 3. The cooling device for a continuous belt-shaped packaging bag according to claim 2, further comprising travel pressing means for pressing the continuous belt-shaped packaging bag against the surface of the conveying means, and a rubber ring wound around each rotatable roll. The continuous belt-shaped packaging bag cooling device according to claim 2 or 3, wherein the conveying means is a chain conveyor having a flat mounting surface. The flat mounting surface of the conveying means formed by forming a metal plate, cold 却装 location of the continuous strip-like packaging bag of claim 4 wherein. The transport means that run in the opposite direction within the same plane and that directly transfer the continuous belt-shaped packaging bag are arranged adjacent to each other in parallel, and the continuous belt-shaped packaging bag is pressed against the surface of each transport means. The cooling device for a continuous belt-shaped packaging bag according to any one of claims 3 to 5, wherein each running pressing means is provided.

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