JP2902600B2 - Filling and packaging method and vertical filling and packaging machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a packing product in which a filler is filled together with filling water by charging solid filling together with filling water into a cylindrical film and heat sealing the cylindrical film. The present invention relates to a filling and packaging method and a vertical filling and packaging machine to be manufactured.

[0002]

2. Description of the Related Art Conventionally, as this type of vertical filling and packaging machine, as shown in FIG. 8, a charging pipe 110 for charging a liquid filler 145 into a cylindrical film 140 is moved opposite to a cylindrical pipe. By sandwiching the tubular film 140 and rotating in this state, the filler 145 put into the tubular film 140 is separated, and a pair of squeeze rollers 111 and a squeeze roller 11 for feeding the tubular film 140 downward.
1 and a heat sealing mechanism 120 which heat seals and cuts the cylindrical film 140 in the width direction is known. The heat sealing mechanism 120 is used for the cylindrical film 1.
A pair of members 121 and 122 which are opposed to each other across the pair 40
The one member 121 has a built-in heater (not shown), and the other member 122 has a cutter 123 provided so as to be able to advance and retreat.

[0003] Based on the above configuration, first, the sword roller 1
With the opening 11, the filler 145 is filled into the cylindrical film 140 from the charging pipe 110. After the filling is completed, the filling material 145 is divided by closing the squeeze roller 110 and crushing the cylindrical film 140. Thereafter, the squeeze roller 110 is rotated to feed the cylindrical film 140 downward. Along with this, a flat portion 140 a in which the filler 145 does not exist is formed in the tubular film 140.
When the flat portion 140a reaches between the heat sealing mechanisms 120, the feeding of the tubular film 140 is stopped, and the members 121 and 122 of the heat sealing mechanism 120 are closed. Then, after the tubular film 140 is heat-sealed by the heater, the cutter 123 is advanced to cut the heat-sealed portion, and the members 121 and 122 are opened. By repeating this series of operations, a package is continuously produced.

[0004]

However, the above-mentioned conventional vertical filling and packaging machine has no problem when the filling is composed of only liquid, but the solid filling such as raw oysters is enclosed. There is a problem when packaging with water. That is, when the filling is solid, particularly when the solid filling is lighter than the filling water or when the filling water is small, when the tubular film is sandwiched by the squeezing roller, the solid filling is squeezed. I will pinch it. As a result, the filler is crushed and loses its value as a product, or the crushed filler remains in the flat portion formed by the rotation of the squeeze roller, and the heat sealing of the cylindrical film becomes impossible. The problem arises.

[0005] On the other hand, instead of dividing the filler with a sword roller, the filler is charged by a required amount and the height of the charged filler is made lower than the position of the sword roller to reduce the filler. It can be prevented from being caught by the squeeze roller. However, in this method, air is mixed into the obtained packaged product. In particular, in the case of packing foods, if air is mixed in the packaged product, the filled material is easily oxidized or decomposed. Therefore, it is important to prevent air from being mixed in the packaged product. As a method of preventing air from being mixed into the packaged product, `` submerged seal '' which presses and heats the part where the filler is charged directly with the heat sealing mechanism without performing the ironing operation by the squeeze roller There is a method called. However, in this method, when the filler is solid, there is a problem of pinching of the filler as described above, and when the tubular film is pinched by the heat sealing mechanism, wrinkles are formed in the portion. In some cases, good heat sealing cannot be performed.

[0006] Further, in the case of a filling which is easily damaged by external force such as raw oysters, it is important to provide the entire bag after packing with sealing water so that the packing is protected from external force. is there.

Accordingly, the present invention prevents the incorporation of air into the packaged product while filling and packing the solid filling together with the filling water, while keeping the entire package tight.
A main object of the present invention is to provide a filling / packaging method and a vertical filling / packaging machine capable of performing filling / packaging without sandwiching a filling material. It is a second object of the present invention to provide a filling and packaging method and a vertical filling and packaging machine capable of performing good heat sealing without generating wrinkles in a portion of the tubular film to be heat sealed.

[0008]

According to the present invention, there is provided a filling and packaging method according to the present invention, wherein a solid filling material is charged together with a filling water, and the filling material is filled above a cylindrical film. By sending the cylindrical film upward with a closed shutter with an interval that cannot pass, a tension is created in the cylindrical film, and the floating of the filler is suppressed, and a part of the sealed water is removed. The tubular film is extruded from above the shutter to above the shutter, and the tubular film is heat-sealed in a width direction at a portion where the extruded sealing water exists.

In the filling / packaging method of the present invention configured as described above, when the solid film is fed upward along with the cylindrical film charged together with the sealing water, the filling is also raised. Since the film is sandwiched above the filler by a shutter that is closed at an interval where the filler cannot pass, the movement of the filler is restricted by the shutter. Therefore, the filling cannot move above the shutter, and only a part of the sealed water is pushed out above the shutter. That is, the floating of the filling material is suppressed, and a tension is formed on the tubular film below the shutter. By heat-sealing the portion above the shutter where the sealed water is present, air is prevented from being mixed into the packaged product, and the filling is not trapped.

[0010] The vertical filling and packaging machine of the present invention comprises a heat sealing mechanism for heat-sealing a tubular film, which is filled with solid water and filled water and fed upward and downward, in the width direction;
A shutter which is disposed below the heat sealing mechanism and is opposed to the tubular film with the filler interposed therebetween and which is closed at an interval where the filler cannot pass therethrough, and wherein the cylinder is closed until the filler is positioned below the shutter. When the film is fed downward, the shutter is closed, and after the shutter is opened, the cylindrical film is moved upward until the sealing water is pushed out to a position higher than the heat sealing mechanism from between the shutters. Once sent, heat sealing is performed by the heat sealing mechanism, which is suitable for implementing the above-described filling and packaging method of the present invention.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a diagram showing a schematic configuration of a vertical filling and packaging machine according to a first embodiment of the present invention.

In FIG. 1, a tubular film 40 is formed by forming a sheet-like film into a tubular shape using a bag-making guide (not shown), and heat-sealing the mating surface with a vertical sealing machine (not shown). In the hollow portion, a charging pipe 10 for charging the solid filler 45 together with the sealing water into the cylindrical film 40 is arranged. FIG. 1 shows a state in which the lower end of the tubular film 40 is heat-sealed in advance by a heat sealing machine 20 described later.

Below the input pipe 10, a pair of squeeze rollers 11 which move in opposition to each other and sandwich the tubular film 40 as shown by an arrow A are arranged to face each other with the tubular film 40 interposed therebetween. The squeeze roller 11 is rotated forward and backward in a state where the squeeze roller 11 is crushed in a flat shape with the tubular film 40 interposed therebetween, whereby the feeding direction of the tubular film 40 is changed upward and downward.

In order to be able to feed the cylindrical film 40 without being crushed,
The cylindrical film 40 is rotated in synchronization with the
A film feed roller (not shown) for feeding the sheet is provided. The feeding of the cylindrical film 40 can be performed only by the film feed roller with the squeeze roller 11 opened, or by the film feed roller and the squeeze roller 11.

Below the squeeze roller 11, a heat sealing mechanism 20 for heat-sealing the tubular film 40 in the width direction and cutting the heat-sealed portion is disposed. The heat sealing mechanism 20 includes a heater bar 21 and a receiving member 22 which are arranged to face each other with the cylindrical film 40 interposed therebetween, and each of which is driven by a driving unit (not shown) in a direction perpendicular to the feeding direction of the cylindrical film 40, that is, in a horizontal direction. Is moved in the opposite direction.

The heater bar 21 has a built-in heating means (not shown) such as an electric heater, and the receiving member 22 has a built-in cutter 23 provided to be capable of moving forward and backward with respect to the heater bar 21. A silicone rubber 22a is attached to the surface of the receiving member 22 facing the heater bar 21 in order to prevent the cylindrical film 40, which has been in a semi-molten state by the driving of the heating means, from adhering to the receiving member 22. ing.
On the other hand, in a portion of the heater bar 21 facing the cutter 23, a groove is formed in which the cutter 23 can enter when the cutter 23 advances.

By pressing the tubular film 40 between the heater bar 21 and the receiving member 22 and driving the heating means, the tubular film 40 is heat-sealed in its width direction. Then, by moving the cutter 23 forward, the heat-sealed portion is cut.

Between the squeezing roller 11 and the heat sealing mechanism 20, a pair of cylindrical films 40 are sandwiched and pressed over the entire width of the tubular film 40 above the portion to be heat sealed during the heat sealing by the heat sealing mechanism 20. A film holding plate 12 is provided. Each of the film pressing plates 12 is attached to a member for supporting the heater bar 21 and a member for supporting the receiving member 22 of the heat sealing mechanism 20. The driving means of the heat sealing mechanism 20 drives the heater bar 21 and the receiving member. It is moved in opposition with 22. Silicone rubber 12a is attached to the distal end surface of each film holding plate 12 to prevent damage to the tubular film 40 when the tubular film 40 is pressed.

The interval between the film holding plates 12 is larger than the interval between the heater bar 21 and the receiving member 22, and when the heater bar 21 and the receiving member 22 are brought closer to each other, the film pressing plate 12 becomes larger than the heat sealing mechanism 20. First, the tubular film 40 is pressed.

Each of the film pressing plates 12 is supported with play in the moving direction thereof, and is urged in a direction approaching each other by urging means (not shown) such as a compression coil spring. Thereby, after the cylindrical film 40 is pressed by each of the film pressing plates 12, when the driving means of the heat sealing mechanism 20 is further driven, the heater bar 21 and the receiving member 2
Numerals 2 approach each other against the urging force of the urging means and press the cylindrical film 40. At this time, the urging force of the urging means is acting on the film holding plate 12,
The film pressing plate 12 presses the cylindrical film 40 with this urging force.

Below the heat seal mechanism 20, a pair of shutters 30 are arranged to face each other with the cylindrical film 40 interposed therebetween. The shutter 30 also moves in the horizontal direction, similarly to the heat seal mechanism 20 and the film holding plate 12 described above. However, the shutter 30 is not completely closed, and a predetermined interval is maintained even in the most closed state. And is kept. The predetermined interval is an interval at which the filler 45 cannot pass. For example, when the filling material 45 is raw oysters, the interval when the shutter 30 is most closed is about 5 mm.

Next, the operation of the vertical filling and packaging machine of the present embodiment will be described with reference to FIGS.

First, as shown in FIG.
1. With the film holding plate 12, the heat sealing mechanism 20, and the shutter 30 open, the solid filler 45 is charged into the cylindrical film 40 together with the sealing water from the charging pipe 10.

When the charged amount reaches a predetermined amount, the charging of the filler 45 is stopped, and as shown in FIG. 2A, the squeeze roller 11 is closed and the cylindrical film 40 is crushed. At this time, when the filling height of the filling material 45 is lower than the position where the squeeze roller 11 sandwiches the tubular film 40, the stiffener roller 11 is closed as it is. Even if it is closed, the filler 45 is lowered to a position where it is not caught by the squeeze roller 11. That is, in the cylindrical film 40, the portion higher than the height of the filler 45 put in the cylindrical film 40 is the squeeze roller 11
, The filling 45 is not pinched by closing the squeeze roller 11.

When the squeeze roller 11 is closed, FIG.
As shown in (1), the squeeze roller 11 is rotated forward to lower the tubular film 40. Thereby, the cylindrical film 40
It is sent downward while being squeezed, and a flat portion 40 a is formed in the tubular film 40.

When the lower end of the flat portion 40a is fed to a position between the shutters 30, the feeding of the tubular film 40 is stopped, and the shutter 30 is closed as shown in FIG. When the shutter 30 is closed, as shown in FIG. 3D, the squeeze roller 11 is rotated in the reverse direction to reversely feed the cylindrical film 40 upward by a predetermined distance.

When the cylindrical film 40 is fed backward, the contents (filler 45 and sealing water) in the cylindrical film 40 are also raised, but the movement of the contents is restricted by the shutter 30. Below the bottom 30, the tubular film 40 is stretched by contents (especially sealing water).
0a. At this time, the interval between the shutters 30 is an interval through which the filler 45 cannot pass,
Is not extruded and only a part of the enclosed water is extruded. That is, the floating of the filler 45 is also suppressed.

The above-mentioned “constant distance” is defined as the time required for the sealed water extruded to the flat portion 40 a by reversely feeding the cylindrical film 40 to reach a position higher than at least a portion sandwiched by the heat sealing mechanism 20. Is the distance, the level of the filled water when the squeeze roller 11 is closed,
It is set in accordance with each condition such as the amount of lowering of the tubular film 40 when forming a, the position of the shutter 30 and the size of the interval. Accordingly, even when the liquid level of the filled water is lower than the flat portion 40a, the air between the flat portion 40a and the filler 45 is discharged together with the sealed water when the cylindrical film 40 is sent upward. It is pushed out from between.

After the cylindrical film 40 is fed backward, the heat sealing mechanism 20 is closed. Along with this, the film holding plate 12 is also closed. When the heat sealing mechanism 20 is closed, as shown in FIG. 3 (e), FIG. 3 (f), and FIG. 4 (g), the film pressing plate 12 is first closed, and then the heater of the heat sealing mechanism 20 is closed. The bar 21 and the receiving member 22 are closed, the cylindrical film 40 is pressurized, and heat sealing is performed. Thus, by closing the heater bar 21 and the receiving member 22 after closing the film holding plate 12, when the heater bar 21 and the receiving member 22 are closed, the upward movement of the sealing water is performed by the film holding plate 12. Because of the restriction, the tubular film 40 is maintained below the shutter 30 by the sealing water generated when the tubular film 40 is fed backward.

As shown in FIG. 3F, after the film holding plate 12 is closed, the shutter 30 is opened immediately before the heater bar 21 and the receiving member 22 are completely closed. As a result, the internal pressure of the tubular film 40 below the shutter 30 escapes in the direction of the film holding plate 12 (upward), and the tubular film 40 itself slightly rises by the reaction at this time. Therefore, at this timing, the heater bar 21
When the and the receiving member 22 are completely closed, the cylindrical film 40
The tension can be made most beautifully.

More specifically, the shutter 30 is opened after the heater bar 21 and the receiving member 22 are closed and the interval between them becomes such that the filler 45 cannot pass through. desirable. As described above, it is preferable to open the shutter 30 before both are completely closed in order to create tension in the tubular film 40. However, when the space between the heater bar 21 and the receiving member 22 is large, the shutter 30 is opened. When the shutter 30 is opened, the enclosed water below the shutter 30 moves between the heater bar 21 and the receiving member 22, and the tubular film 40 between the heater bar 21 and the receiving member 22 swells. In this state, heater bar 2
When 1 and the receiving member 22 are closed, a portion of the tubular film 40 where heat sealing is performed may be wrinkled, and good heat sealing may not be performed.

On the other hand, when the shutter 30 is opened at the above timing, the portion to be heat-sealed is regulated by the heater bar 21 and the receiving member 22 in a flat shape. Wrinkles do not occur and good heat sealing can be achieved. In order to ensure the operation timing of the shutter 30, the heater bar 21 and the receiving member 2
When the interval between the two has reached the above-mentioned interval, the movement of both may be stopped once and the shutter 30 may be opened.

When the heater bar 21 and the receiving member 22 are closed, the sealing water extruded when the tubular film 40 is fed backward exists between the two, and the heater bar 21 and the receiving member 22 are closed. And by completely closing
As shown in FIG. 4 (g), the portion of the tubular film 40 between the heat sealing mechanisms 20 is pressurized while pressing the filled water up and down. Accordingly, air does not enter the tubular film 40 below the heat sealing mechanism 20.

When the heater bar 21 and the receiving member 22 are closed, the heating means incorporated in the heater bar 21 is driven to heat seal the tubular film 40 in the width direction. As shown, the cutter 23 built in the receiving member 22 is advanced to cut the heat-sealed portion.

Next, as shown in FIG. 4 (i), the squeeze roller 11 is opened, the heat sealing mechanism 20 and the film pressing plate 12 are opened, and the cut packaged product 41 is dropped. Then, as shown in FIG. 1, the filler 45 is put into the tubular film 40 together with the sealing water again, and the above-described series of steps are repeated, whereby the packaging product 41 can be continuously produced.

As described above, the shutter 30 is provided below the heat sealing mechanism 20, and the shutter 30
The tubular film 40 is raised in a state where the movement of the packaged product is restricted, and only the sealing water is pushed out to the flat portion 40a, and this portion is heat-sealed by the heat sealing mechanism 20, thereby preventing air from being mixed into the packaged product 41. The packing can be performed without sandwiching the filling material 45.

Further, after the film holding plate 12 is closed, the heat sealing mechanism 20 is closed. Further, immediately before the heat sealing mechanism 20 is closed, the shutter 30 is opened to maintain the tension of the tubular film 40 below the shutter 30. That is, the packaging product 41 has a stronger tension. this is,
This is important when packing a filling 45 that is easily damaged by external force, such as raw oysters. In other words, by providing the packaged product 41 with tension, the packaged product 41 is hardly deformed, and the packing 45 is protected from external force even if external force is applied to the packaged product 41 when the packaged product 41 is transported or displayed at a store. Is done. As a result, damage to the filling 45 is prevented.

If the film holding plate 12 is not provided, when the heat sealing mechanism 20 is closed, the sealed water easily escapes upward, and the tension of the cylindrical film 40 below the shutter 30 becomes weak. Further, if the heat seal mechanism 20 is closed with the shutter 30 closed, the tension of the tubular film 40 is absorbed by a slight gap between the heat seal mechanism 20 and the shutter 30, and a clean tension cannot be obtained.

In this embodiment, the case where the squeeze roller 11 squeezes and feeds the cylindrical film 40 has been described. However, in the present invention, if the means for feeding the cylindrical film 40 is provided separately, the squeeze roller 11 is not necessarily required. Not something. When the squeeze roller 11 is not provided, the shutter 30 is closed when the cylindrical film 40 is fed until the filling 45 in the cylindrical film 40 is at a position lower than the shutter 30. Other operations are the same as those described above. However, the flat part 4 is
0a, the shutter 30 is closed, and the heat sealing mechanism 2 is closed.
If heat sealing is performed at 0, wrinkles may occur in the portion where heat sealing is performed, and complete heat sealing may not be possible. It is desirable to form the flat portion 40a.

(Second Embodiment) FIG. 5 is a view showing a schematic configuration of a second embodiment of the vertical filling and packaging machine of the present invention.

This embodiment is different from the first embodiment in the configuration of the heat sealing mechanism 50. The other squeeze rollers 11, the film pressing plate 12, and the shutter 30 are the same as those in the first embodiment, and therefore are denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted. Hereinafter, the heat sealing mechanism 50 will be described.

In FIG. 5, two cylinders 51 and 56 are arranged with the cylindrical film 40 therebetween and the rods facing each other. Each of the cylinders 51 and 56 is fixed to a slider (not shown) which moves in the horizontal direction. Each film holding plate 12 is attached to a cylinder 51, 56 or a slider, respectively.

A cutter holding plate 52 holding a cutter 54 so as to be able to move forward and backward is fixed to the rod of one cylinder 51. The cylinder 51 has a heater bar receiver 53 which is a member for receiving a heater bar 57 described later.
Are provided rotatably about the support shaft 51a in the direction of arrow B in the figure. The heater bar receiver 53 is urged in the clockwise direction in the figure by a spring (not shown), but the position of the distal end of the heater bar receiver 53 is set to a height equal to or less than a height of a heater bar 57 described later. Is restricted from rotating. Silicone rubber is affixed to the tip surface of the cutter holding plate 52 and the tip surface of the heater bar receiver 53.

Further, a cam 55 is provided on the rod of one of the cylinders 51 and a heater bar receiver 53 is provided.
Is provided with a cam receiving roller 53a which comes into contact with a cam 55 provided on the rod of one cylinder 51 when the rod is advanced. Thus, when the rod advances and the cam receiving roller 53a rides on the cam 55, the heater bar receiver 53 is rotated counterclockwise against the urging force of the spring.

A heater bar 57 containing a heating means (not shown) such as an electric heater is fixed to the rod of the other cylinder 56. Also, in the cylinder 56,
The cooling bar 58, which is a member for receiving the cutter holding plate 52,
It is provided so as to be rotatable around the support shaft 56a in the direction of arrow C in the figure. The cooling bar 58 is urged in the counterclockwise direction in the figure by a spring (not shown).
Is restricted so as not to rotate below a height substantially equal to the position of the cutter holding plate 52. A groove into which the cutter 54 can enter when the cutter 54 held by the cutter holding plate 52 is advanced is formed on the tip end surface of the cooling bar 58.

Further, a cam 59 is provided on the rod of the other cylinder 56, and the cooling bar 58 comes into contact with the cam 59 provided on the rod when the rod of the other cylinder 56 is advanced. Cam receiving roller 5
8a are provided. Thus, when the rod advances and the cam receiving roller 58a rides on the cam 59, the cooling bar 58 is rotated clockwise against the urging force of the spring.

Next, the operation of the vertical filling and packaging machine of this embodiment will be described. Here, an operation until the shutter 30 is closed and the cylindrical film 40 is reversely fed upward (an operation until the heat sealing mechanism 50 is driven),
Since the operation after the cutting of 0 is the same as that of the first embodiment, the operation of the heat sealing mechanism 50 will be described below.

When the shutter 30 is closed and the cylindrical film 40 is fed in the reverse direction, each of the cylinders 51,
56 is approaching. At this time, the heater bar 57 is advanced, and the heater bar 57 and the heater bar receiver 53 are opposed to each other. As the cylinders 51 and 56 approach each other, as shown in FIGS. 6A to 6C, the film presser plate 12 is first closed, and then the heater bar 5 is closed.
7 and the heater bar receiver 53 are closed, and the cylindrical film 40 is pressurized. Here, as in the first embodiment,
Immediately before the heater bar 57 and the heater bar receiver 53 are completely closed, the shutter 30 is opened.

Heater bar 57 and heater bar receiver 53
When is closed, there is sealing water that was extruded between the two when the cylindrical film 40 was reversely fed,
By closing the heater bar 57 and the heater bar receiver 53, as shown in FIG.
The portion between the heater bar 57 and the heater bar receiver 53 is pressurized, and the sealed water existing there is divided vertically. Accordingly, air does not enter the tubular film 40 below the heat sealing mechanism 50.

Heater bar 57 and heater bar receiver 53
Is closed, the heating means incorporated in the heater bar 57 is driven to heat seal the tubular film 40.

When the heat sealing is completed, as shown in FIG. 7D, the heater bar 57 is retracted, and at the same time, the cutter holding plate 52 is advanced. Thereby, the cooling bar 58
And the heater bar receiver 53 rotate counterclockwise, and the cooling bar 58 is moved to a position facing the cutter holding plate 52, while the heater bar receiver 53 is moved to the cooling bar 58.
Is retracted from the position where it is advanced. As a result, this time, the cylindrical film 40 is pressed by the cooling bar 58 and the cutter holding plate 52. In this state, the heat-sealed portion is cooled, and the cutter 54 is further advanced to cut the heat-sealed portion.

After cutting the heat-sealed portion, FIG.
As shown in (e), the squeegee roller is opened 11 and the heat sealing mechanism 50 and the film holding plate 12 are opened.
The cut packaging product 41 is dropped. At this time, the cutter holding plate 52 is retracted, and the heater bar receiver 53 is returned to the original position. Then, as shown in FIG. 5 again, the filler 45 is put into the tubular film 40 together with the sealing water, and the above-described series of steps are repeated to continuously produce the packaged product 41. it can.

In the present embodiment, in addition to the same effects as those of the first embodiment, the heat sealing of the tubular film 40 and the cooling and cutting of the heat sealed portion are performed by different means. Each process of heating, cooling, and cutting the tubular film 40 can be efficiently performed. As a result, the speed of the heat sealing operation of the tubular film 40 is increased.

When cutting the heat-sealed portion,
The cutter 54 has a cooling bar 58 instead of a heater bar 57.
Therefore, it is not necessary to form a groove for the cutter 54 in the heater bar 57. Thereby, the seal width can be reduced, and the amount of film used for one packaged product 41 can be reduced.

[0056]

As described above, according to the filling and packaging method of the present invention, the upper part of the solid filler charged together with the sealing water into the cylindrical film is closed with a shutter, and the cylindrical film is moved upward in that state. By extruding only the sealing water above the shutter while creating tension in the tubular film by sending it to the heat exchanger, heat sealing the area where the pushed sealing water is present prevents the filling material from being trapped, Air can be prevented from being mixed.

Further, after the cylindrical film is fed upward, the cylindrical film is sandwiched and pressed from the side over the entire width thereof above the portion to be heat-sealed, and heat sealing is performed in this state. By opening the shutter after pressing the cylindrical film above the portion to be sealed and before performing the heat sealing, a packaged product having a stronger tension can be manufactured. This is particularly useful if the filling is susceptible to damage.

Further, when the interval between the pair of members for pressurizing the cylindrical film for performing the heat sealing becomes an interval where the filler cannot pass, the shutter is opened, and then the cylindrical film is pressurized, so that the packaged product can be used. While having a strong tension, it is possible to prevent wrinkles from being generated in the heat-sealed portion when pressing the cylindrical film, and it is possible to perform good heat-sealing.

The vertical filling and packaging machine of the present invention comprises a heat sealing mechanism for heat-sealing the tubular film in the width direction, and a shutter which is disposed below the heat sealing mechanism and which is closed at an interval where the filling cannot pass therethrough. Therefore, the filling and packaging method of the present invention can be easily implemented.

[Brief description of the drawings]

FIG. 1 is a view showing a schematic configuration of a first embodiment of a vertical filling and packaging machine of the present invention.

FIG. 2 is a view for explaining the operation of the vertical filling and packaging machine shown in FIG.

FIG. 3 is a view for explaining the operation of the vertical filling and packaging machine shown in FIG. 1;

FIG. 4 is a view for explaining the operation of the vertical filling and packaging machine shown in FIG. 1;

FIG. 5 is a view showing a schematic configuration of a second embodiment of the vertical filling and packaging machine of the present invention.

FIG. 6 is a view for explaining the operation of the vertical filling and packaging machine shown in FIG.

FIG. 7 is a diagram for explaining the operation of the vertical filling and packaging machine shown in FIG.

FIG. 8 is a view showing a schematic configuration of a conventional vertical filling and packaging machine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 feeding pipe 11 squeeze roller 12 film holding plate 20, 50 heat sealing mechanism 21, 57 heater bar 22 receiving member 23, 54 cutter 30 shutter 40 cylindrical film 45 filling material 52 cutter holding plate 53 heater bar receiver 58 cooling bar

Claims (9)

(57) [Claims] 1. A cylindrical film filled with a solid filler together with filling water, and the cylindrical film is sandwiched above a closed shutter with an interval at which the filler cannot pass through the cylindrical film. By sending upward, a tension is created in the tubular film, and the floating of the filler is suppressed, and a part of the sealed water is pushed out from between the shutters to above the shutter, and the extruded sealed water is extruded. A packing method in which the tubular film is heat-sealed by pressurizing and heating the tubular film in the width direction at a portion where the film exists. 2. After the cylindrical film is fed upward, the cylindrical film is pressed across the entire width thereof from above the portion to be heat-sealed, and the heat sealing is performed in this state. Item 6. The filling and packaging method according to Item 1. 3. The filling and packaging method according to claim 2, wherein the shutter is opened before the heat sealing is performed after the cylindrical film is pressed above the portion where the heat sealing is performed. 4. In order to perform the heat sealing, a heat sealing mechanism having a pair of members which are arranged to face each other with the cylindrical films interposed therebetween, and move and face each other to press and heat the cylindrical films, When performing the heat sealing, the pair of members are closed, and the shutter is opened when the interval between the pair of members is equal to or less than the interval where the filler cannot pass, and then, the cylindrical film is formed by the pair of members. 4. The filling and packaging method according to claim 1, wherein the pressure is applied and heated. 5. A heat sealing mechanism in which a solid filler is charged together with the filling water and heat-sealed in a width direction of a cylindrical film sent upward and downward, and the cylindrical film is placed below the heat sealing mechanism. A shutter closed at an interval where the filler cannot pass, and the shutter is closed when the tubular film is fed downward until the filler is located below the shutter. Then, after the shutter is closed, if the tubular film is sent upward until the sealed water is pushed out to a position higher than the heat sealing mechanism from between the shutters, heat sealing is performed by the heat sealing mechanism. Vertical filling and packing machine to be performed. 6. The film press according to claim 5, further comprising a film press above the heat sealing mechanism, which presses the cylindrical film across its entire width from the side after the cylindrical film is fed upward. Vertical filling and packaging machine. 7. The heat sealing mechanism has a pair of members that are opposed to each other with the cylindrical film interposed therebetween and are moved to face each other to press the cylindrical film. One of the members is the cylindrical film. 7. The vertical filling and packaging machine according to claim 5, wherein a heating means for heat-sealing is provided, and a cutter for cutting the tubular film is provided on the other member. 8. The heat sealing mechanism, in addition to the pair of members, is further disposed on the same side as the other member with respect to the cylindrical film, and the other member is provided with respect to the cylindrical film. A heater receiving member that is rotated by being retracted and moved to a position facing the one member; and the heater receiving member is disposed on the same side as the one member with respect to the cylindrical film, and the one member is the cylinder. A cooling member for cooling a heat-sealed portion of the tubular film, the cooling member being rotated by being retracted with respect to the tubular film and moved to a position facing the other member. The vertical filling and packaging machine as described. 9. The pair of parts for performing the heat sealing.
When closing the material, the space between the pair of members is
When the distance falls below the interval that cannot pass, the shutterOpen
Then, the cylindrical film is pressed by the pair of members.
The vertical filling and packaging machine according to claim 7 or 8, wherein