JPH06336232A - Cooling device for continuous packaging bag - Google Patents

Abstract

PURPOSE:To improve the cooling efficiency of continuous packaging bags in order to contrive the reduction of the space occupied by a cooling device by a method wherein the continuous packging bags, together with a cooling liquid, are fed into a spiral passage and the continuous packaging bags are pulled out from the spiral passage, while the cooling liquid is cooled again and circulated. CONSTITUTION:A spiral passage 2 consisting of a spiral tube is provided in a water tank 1. A cooling liquid feeding means 5 and a packaging bag feeding means 8 are connected to an entrance 3 opened at one end of the spiral passage 2. A cooling means 6 is connected to the cooling liquid feeding means 5 to cool a cooling liquid 7 flowing down into the water tank 1 from an exit 4 of the spiral passage 2. A packaging bag feeding means 8 is provided with a pair of rollers 8a for feeding continuous packaging bags 9. In the spiral passage 2, after the continuous packaging bags 9 are sent from the entrance 3 to the exit 4 together with the cooling liquid 7 while being cooled, the continuous packaging bags 9 alone are pulled out from the exit 4 by a pulling means 10. By this method, the cooling efficiency is improved to reduce the space occupied by the cooling device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a continuous packaging bag in which a liquid material to be packaged is heat-sterilized and filled and packaged at a temperature of 80 to 95 ° C. The present invention relates to a cooling device for a continuous packaging bag for rapidly cooling together with an object to be packaged for the purpose of preventing deterioration of various physical properties such as seal strength and impact strength.

[0002]

2. Description of the Related Art A conventional cooling device of this type for a continuous packaging bag is shown in FIGS. 4 and 5. The apparatus shown in FIG. 4 puts cooling water 31 as a cooling liquid in a water tank 32, and preferably, while cooling the cooling water 31 to a constant temperature,
It passes the continuous packaging bag 33 there, and most of them
The continuous packaging bag 33 after filling and wrapping the object to be packaged at a speed of 4 to 6 m / min is fed into the water tank by the feed roller 34 which is rotated at a constant speed, and in the water tank, the upper portion thereof is shown in FIG. Each of the four winding rollers 35 to 38, which are also rotated at a constant speed, is provided with a continuous packaging bag 33 in a loop form a plurality of times, and in a plan view, as shown in FIG. The continuous packaging bag 33 is sufficiently contacted with the cooling water 31 while the winding rollers 35 to 38 are sequentially traced through the guide rollers 39 to 43 arranged in the lower part of the water tank.
33. Consequently, the object to be packaged is cooled as required, and then taken out by the pull-up roller 44 to the outside of the water tank. In the apparatus shown in FIG. 5, the continuous packaging bag 33 is wound around each of a total of 6 winding rollers 45 to 50, which are arranged in a staggered manner in the upper and lower portions of the water tank 32, and the continuous packaging bag 33 is wound about half a turn around. Let it cool down.

[0003]

By the way, the cooling temperature of the continuous packaging bag 33 in the conventional technique is as follows.
There is a disadvantage that the cooling efficiency is poor because it is performed in a cooling mode close to natural cooling, which is greatly affected by the contact time between the cooling water 31 and the continuous packaging bag 33 that are substantially stationary. Therefore, for example, by increasing the filling and packaging speed of the object to be packaged to about 24 m / min to make the speed approximately 4 to 6 times that of the conventional case, the contact time between the continuous packaging bag 33 and the cooling water 31 is increased. Considering only the above, the length of the water tank 32 also needs to be extended to about 4 to 6 times that of the conventional one, and there is a problem that the space occupied by the water tank 32 becomes significantly large.

Even in the prior art, a relative speed corresponding to the running speed of the continuous packaging bag 33 is generated between the cooling water 31 and the continuous packaging bag 33. Therefore, this relative speed is taken into consideration. In this case, of course, the occupied space of the water tank 32 can be reduced as compared with the above-mentioned case, but the relative speed thereof cannot be higher than the traveling speed of the continuous packaging bag 33, and the cooling in the water tank is possible. The disadvantage of cooling efficiency still remains in that the water is still water.

The present invention has been made in view of the above problems of the prior art, and by forcibly cooling the continuous packaging bag, the cooling efficiency of the continuous packaging bag is greatly increased to improve the cooling device. A cooling device for a continuous packaging bag that can effectively reduce the occupied space.

[0006]

In the cooling device for a continuous packaging bag according to the present invention, a curved passage having a required inner diameter and length is preferably provided in a water tank, and the curved passage is preferably provided with the curved passage. The cooling liquid supply means for supplying the cooling liquid at a high speed from the tangential direction thereof is provided, and the continuous packaging bag is sent into the curved passage at a speed slower than the cooling liquid flow speed, preferably at a speed not more than half the cooling liquid flow speed. A packaging bag feeding means is provided, and further,
A cooling means for the cooling liquid is provided, and more preferably, the detour passage is one spiral or spiral passage.

[0007]

In this cooling device, by feeding the continuous packaging bag from the inlet of the curved passage in the same direction as the flowing direction of the cooling liquid, the continuous packaging bag becomes the cooling liquid regardless of the curved manner of the passage. Since it is carried and reaches the exit of the detour passage reliably and quickly, it is possible to extremely easily insert the continuous packaging bag into the passage.

Then, in the subsequent continuous feeding state of the continuous packaging bag, between the cooling liquid flow velocity selected in relation to the packaging bag volume, the passage diameter and the length, and the packaging bag traveling speed. Based on the sufficiently large relative velocity and the flow motion of the cooling liquid itself, the contact cooling liquid is constantly positively updated not only for each packaging bag but also between the respective packaging bags. Therefore, the continuous packaging bag can be sufficiently cooled in a short time with excellent cooling efficiency.

Therefore, here, the space occupied by the apparatus is effectively reduced, and still, the continuous packaging bag fed from the entrance of the curved passage is cooled as expected before reaching the exit of the passage. Is possible.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an embodiment of the present invention in the case of using a spiral curved passage, in which 1 is a water tank and 2 is a water tank.
Indicates a detour path formed of a spiral pipe arranged in the water tank.

For example, when the width of each packaging bag is 70 mm, the length is 115 mm, and the thickness is about 9 mm, the inner diameter is 120 mm,
Here, the number of turns of the bypass passage 2 which can make the spiral diameter 1200 mm is 6.5, and the cooling liquid and the continuous packaging bag extend in the tangential direction of the spiral at each end of the passage 2. Each entrance 3 and exit 4 of
To provide.

At the entrance 3 of the detour passage 2,
For example, the cooling liquid supply means 5 which can be a discharge amount variable pump is connected, and the cooling liquid supply means 5 is further connected to the cooling liquid cooling means 6 connected to the water tank 1. Here, the cooling liquid cooling means 6 is the outlet 4 of the detour passage 2.
It functions to cool the cooling liquid 7, such as cooling water, that has flowed into the water tank from the cooling tank to a predetermined temperature, for example, around 5 ° C.

Here, the cooling means 6 is the water tank 1.
In addition, it can be connected to a separate cooling water source, or can be connected to a separate cooling water source separately from the water tank 1.

A packaging bag feeding means 8 for feeding the continuous packaging bag into the detour path is further provided above the entrance 3 of the detour path 2, and here, this feeding means 8 is composed of two nipping rollers 8a. While operating at substantially the same speed as the filling and packaging speed of the object to be packaged, the flow velocity in the passage of the cooling liquid 7 is preferably twice or more that speed, and thus the feeding speed of the continuous packaging bag 9. Thus, the relative speed between them is set to a value equal to or higher than the traveling speed of the packaging bag 9.

According to the apparatus configured as described above, in particular, in connection with various dimensions of the bypass passage 2 which are determined in advance, the traveling speed of each packaging bag, the required cooling heat amount, and the like,
Coolant 7 supplied from the coolant supply means 5 to the curved passage 2
By selecting the flow rate of the continuous packaging bag 9 supplied to the bypass passage 2 through the packaging bag feeding means 8, the cooling liquid 7
Is very easily and quickly reached to the passage outlet 4, and the large relative speed between the traveling speed of the continuous packaging bag 9 and the flow speed of the cooling liquid 7 and the high speed of the cooling liquid itself. As described above, each packaging bag is cooled with a high cooling efficiency based on the flow motion of (1), and when it reaches the outlet 4 of the curved passage 2, the packaging bag is cooled to a desired temperature.

By the way, the continuous packaging bag 9 reaching the outlet 4
Is taken out from the detour path 2 via the packaging bag drawing means 10 which can also be composed of a pair of nipping rollers. Here, it goes without saying that the drawing means 10 is also driven at the same speed as the feeding means 8.

Thus, according to this device, in particular,
By forcibly cooling the packaging bag 9 with the cooling liquid 7 flowing at a speed much higher than the traveling speed of the continuous packaging bag 9,
The cooling efficiency of the continuous packaging bag 9 can be greatly increased as compared with the prior art, and as a result, the space occupied by the cooling device can be effectively reduced. And, this is more effective as the filling and packaging speed of the article to be packaged, in other words, the feeding speed of the continuous packaging bag 9 becomes faster.

By the way, the space occupied by the device for lowering the temperature of the continuous packaging bag running at 6 m / min from 80 ° C. to 30 ° C. in the conventional device shown in FIG. 4 and the inventive device shown in FIG. Comparing the floor area occupied by a water tank with a depth of 500 mm, the conventional device has a width of 800 mm and a length of 1000 mm.
The width is 800 mm and the length is 500 mm in the inventive device
It was mm. Here, 10 g of hot water was enclosed in each packaging bag.

By the way, in the conventional apparatus, four winding rollers are arranged at a pitch of 200 mm and four loops each having a peripheral length of 0.8 m are formed on each winding roller, so that the initial cooling water in the water tank is formed. The temperature was 10 ° C.

On the other hand, in the invention device, the inner diameter of the detour passage is set to 12
0 mm, the spiral diameter was 1200 mm, the number of spiral turns was 5, and cooling water at 10 ° C. was supplied into the passage at a flow rate of 10 m / min.

FIG. 2 is a partial cross-sectional view showing another example of the detour path, in which the detour path 12 is formed into one three-dimensional spiral path,
In other words, it is a conical spring passage.

Also in this example, by making the relative speed between the traveling speed of the continuous packaging bag 9 and the flow velocity of the cooling liquid 7 sufficiently large, the same operational effect as the above-mentioned embodiment can be brought about.

According to this embodiment, the heat exchange between the continuous packaging bag 9 and the cooling liquid 7 progresses, and the flow velocity increases as the temperature of the cooling liquid 7 rises, so that the cooling efficiency is improved. There is an advantage that they can be made almost even over the entire length of the twelve.

FIG. 3 is a view showing still another embodiment of the detour path, in which the detour path is constituted by a combined structure of a plurality of U-shaped pipes.

As shown in the figure, two long winding rollers 13 and 14 are arranged in parallel with each other above the water tank 1, and one short passing roller is provided between the two rollers.
In the place where 15 is arranged, each of the U-shaped pipes 16 and 17 in which the respective inlets and outlets are located below the respective long wrapping rollers 13 and 14 with their respective rollers separated from each other, The detour path 22 is formed by providing four winding rollers at a predetermined interval in the axial direction of the rollers 13 and 14, and the continuous path supplied from the packaging bag feeding means 8 is supplied to the detour path 22. The packaging bags 9 are inserted into the respective U-shaped tubes 16 on one side through the wrapping rollers 13 in sequence as shown by the alternate long and short dash line in FIG. Similarly, the U-shaped pipes 17 are sequentially inserted in the same manner to form a passage for the continuous packaging bag 9.

In the illustrated example, the cooling liquid 7 is supplied to each U-shaped pipe 16 and 17 at a high speed in the tangential direction from the U-shaped bottom position.

Also with the above-described device, the continuous packaging bag 9 can be made to have a sufficiently large speed difference between the flow velocity of the cooling liquid 7 in the U-tube and the traveling speed of the continuous packaging bag 9. Except the easiness of insertion into the detour path, the same operational effects as those of the above-described embodiments can be obtained.

In this example, when the cooling liquid 7 is supplied from the inlet openings of the U-shaped pipes 16 and 17, it goes without saying that the cooling efficiency can be improved, and the U-shaped pipes 16 and 17 can be improved. It is also possible to position the inlet opening below the liquid level in the water tank.

[0029]

As is apparent from the above description, according to the present invention, the speed difference between the running speed of the continuous packaging bag in the curved passage and the flow speed of the cooling liquid is increased. Since the continuous packaging bag can be forcibly cooled and the cooling efficiency is sufficiently enhanced, the space occupied by the cooling device can be extremely effectively reduced.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing an embodiment of the present invention.

FIG. 2 is a partial sectional view showing another embodiment of the present invention.

FIG. 3 is a diagram showing still another embodiment of the present invention.

FIG. 4 is a diagram showing a conventional example.

FIG. 5 is a cross-sectional view showing another conventional example.

[Explanation of symbols]

 1 Water tank 2, 12, 22 Detour path 3 Inlet 4 Outlet 5 Cooling liquid supply means 6 Cooling liquid cooling means 7 Cooling liquid 8 Packaging bag feeding means 8a Clamping roller 9 Continuous packaging bag 10 Drawing means 13, 14 Long winding roller 15 Short transfer roller 16, 17 U-tube

Claims (3)

[Claims] 1. A detour path, a supply means for supplying a cooling liquid to the detour path, a packaging bag feeding means for supplying a continuous packaging bag into the detour path at a speed slower than a flow rate of the cooling fluid, and a cooling bag for the cooling solution. A cooling device for a continuous packaging bag comprising a cooling means. 2. The cooling device for a continuous packaging bag according to claim 1, wherein the curved passage is one spiral passage. 3. The cooling device for a continuous packaging bag according to claim 1, wherein the detour passage is one spiral passage.