JPS621052Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a vacuum or gas packaging system that can easily vacuum pack raw meat, ham, and other foods as needed, or fill them with gas after evacuating them. The present invention relates to a filling packaging device.

BACKGROUND TECHNOLOGY A conventionally used vacuum or gas filling packaging device of this type shown in FIGS. 11 to 14 is a gas filling or vacuum sealing machine disclosed in Japanese Patent Application Laid-Open No. 79221/1983. This device is roughly divided into three parts: a movable nozzle 1, a sealing bed 2, and a crimp bar 3.
When the suction and gas suction processes are completed, the nozzle 1 quickly retreats, and at the same time the bar 3 descends to its final position, and the heater placed on the bed 2 is energized to generate heat. It is characterized by the fact that welding work is performed.

In addition, this prior art has the features that the intake and gas blowing nozzles are movable and are configured to hold the opening of the packaging bag as airtight as possible until just before the sealing process begins, and the tip of the nozzle is separated from the packing part. The present invention is characterized in that the amount of air that re-enters into the package is minimized during the time until the crimp lever finally finishes lowering.

Further, in this technology, the intake and gas blowing nozzles are movable back and forth, and the shape of the nozzle is formed into a spindle shape with pointed ends, a flat shape with pointed ends, or a flat rhombus shape.

Problems to be Solved by the Invention In the prior art, maintaining the airtightness of the packaging bag and achieving complete sealing have been solved to some extent in that the nozzle is movable. however,
There is a problem in that the opening of the packaging bag cannot be kept airtight temporarily after the tip of the nozzle leaves the packing part until the final descent of the crimping lever. It was not possible to completely prevent air from re-entering the packaging bag within the time limit.

Furthermore, even if two nozzles are used and the air inside the packaging bag is sucked at two locations by forming the nozzles into a flat shape, the inner surface of the packaging bag close to the nozzle suction port will polymerize due to the suction pressure and become clogged. It was not possible to prevent wrinkles from forming. This problem does not occur if the two nozzles are exactly in close contact with both sides of the packaging bag and are stopped at that position, but when using packaging bags of various sizes, two nozzles are used each time. This was inconvenient because the distance between the book nozzles had to be set narrowly.

Furthermore, conventional nozzles move forward during air suction and move backward during heat sealing, but this nozzle is installed perpendicular to the front surface of the packaging device body, and the two nozzles are parallel to each other. Because it is provided as a
Each nozzle is inserted deep into the bag parallel to both sides of the bag.

When air is sucked in this state, as the degree of vacuum inside the bag increases, the bag comes into pressure contact around the nozzle.
Furthermore, during heat sealing, the nozzle retreats straight back while remaining in its parallel state, so that the backward motion of the nozzle is blocked by the pressure-contacted bag, making it impossible for the nozzle to come out from the bag.

In this case, applying a lubricant such as water or oil to the surface of the nozzle can eliminate this problem to some extent, but doing so is not only time-consuming but also undesirable from a sanitary standpoint, and improvements in this respect are strongly desired. Ta.

Furthermore, conventional nozzles are formed into a spindle shape with pointed ends, a flattened shape with pointed ends, or a flattened diamond shape to improve air suction.

However, in the case of the three-sided sealed packaging bag shown in Figure 10 (sealed in three places on the bottom and both sides), both sides are sealed, so if the both sides are opened from the inside, The shape of the bag is triangular, and conventional nozzles cannot match the shape of both sides of the bag.For this reason, when heat-sealing, the sides of the bag are more likely to crease, which can prevent air leakage. Not only did this cause a problem, but the appearance was also bad. For this reason, there has been a strong desire to develop a packaging device for vacuum or gas filling that can maintain a vacuum state without any problem and heat-seal the bag in a completely hermetically sealed state even if the bag is sealed on three sides.

Summary of the invention This invention was made to solve the problems existing in the above-mentioned conventional technology, and the two nozzles in a pair are movable left and right, and the two nozzles are precisely positioned on both sides of the packaging bag. The purpose is to freely match the size and shape of various packaging bags, to smoothly and reliably suck air or fill with gas, and at the same time improve work efficiency.

In addition, the present invention holds the nozzle and the mouth edge of the bag airtight with a clamping rod during air suction or gas filling, and maintains the airtight holding state with the clamping rod during heat sealing, and simultaneously retreats the nozzle. Another purpose is to close and heat seal the heat sealing rod to ensure an airtight seal.

Furthermore, in this invention, the two nozzles are not installed parallel to each other, but are installed slightly inwardly, so that after suction of the air inside the bag is completed, the top and bottom surfaces of the bag that are in pressure contact with the nozzles are To provide a packaging device for vacuum or gas filling that can be broken and the nozzle can be smoothly retracted.

Furthermore, the present invention has the outer part of the nozzle formed into a V-shape so that even if the bag is sealed on three sides, it can be completely and reliably sealed without wrinkles during heat sealing. The present invention provides a vacuum or gas filling packaging device that can be used for vacuum or gas filling.

Means for Solving the Problems The present invention employs the following means to solve the above problems.

A pair of nozzles 15, 15 movable left and right and forward and backward are provided at the center of the front surface of the device body 11 with their tips protruding forward by a required length, the pair of nozzles 15, 15 are fitted to a pair of sliding bodies 19, 19 so as to be movable forward and backward, and the four corners of the pair of sliding bodies 19, 19 are inserted into four support rods 18 so as to be movable left and right,
A pair of long guide grooves 20, 20 are provided on both sides of the pair of sliding bodies 19, 19, and a pair of nozzles 1
The pair of nozzles 15, 15 are loosely fitted in a guide rod 21 so as to be movable left and right, and the guide rod 21 is loosely fitted in the pair of guide grooves 20, 20 so as to be movable forward and backward. A pair of upper and lower clamping rods 16, 16 and a pair of upper and lower heat sealing rods 17, 17 which move up and down while maintaining their horizontality relative to each other are fitted in the pair of nozzles 15, 15.
The pair of heat seal rods 1 are disposed above and below the
A long clearance 24 for allowing the passage of the clamping rods 16, 16 is provided in the middle of the pair of clamping rods 16, 16, and both ends of the pair of clamping rods 16, 16 are connected to form a rectangular frame.
A heater 26 is provided on one of the pair of heat seal rods 17, 17, and the pair of nozzles 1
A pair of clutches 3 that adjust the left and right movement of 5 and 15
A pair of drive members 35, 35, 4 such as chains are provided to link the left and right movement of the pair of nozzles 15, 15 with the up and down movement of the pair of clamping rods 16, 16.
1, 41, 44, 44 are provided, and the pair of nozzles 15, 15 are moved forward and backward and the pair of heat seal rods 1
a pair of drive bodies 60, 60 such as a pair of chains for linking the up and down movements of the nozzles 15, 15, and the pair of nozzles 15, 15 are inclined slightly inwardly, with the inclination angle being set within a range of about 1 to 20 degrees;
The pair of nozzles 15, 15 are characterized in that their outer portions are formed in an approximately V-shape and their inner portions are formed in an approximately wedge shape.

Effect The present invention has the above configuration, so that raw meat,
When the lip of a synthetic resin bag containing ham or other food is fitted into the tips of the pair of nozzles 15, 15, and the motor 27 is rotated, the drive bodies 35, 35, such as chains, are rotated. and a pair of clamping rods 16,1
6 up and down in the closing direction. At the same time, driving bodies 41, 41 such as chains that are linked to driving bodies 35, 35 such as chains, and driving bodies 44, 4 such as chains.
4 is also rotated to move the pair of nozzles 15, 15 left and right in the opening direction. In this case, a pair of nozzles 15,1
When 5 is fully opened on both sides of the bag mouth, the clutch 39
is activated, the driving bodies 41, 41, such as chains, and the driving bodies 44, 44, such as chains, stop rotating, and the pair of nozzles 15, 15 stop at the relevant positions.

On the other hand, the pair of clamping rods 16, 16 continue to move up and down, and the mouth edge of the bag body and the pair of nozzles 15, 1
Stop at the position where 5 is pressed from above and below. The motor 27 is connected to the pair of clamping rods 16,1 in a known electrical manner.
6 are controlled to stop in a state where they are in pressure contact with each other. A pair of clamping rods 16,1
At the same time when the bag 6 stops in a pressurized state, the vacuum pump 67 is activated, and the air inside the bag is removed through the pair of nozzles 15, 15 to create a vacuum state.

The outer parts of the pair of nozzles 15, 15 are
Because it is shaped like a letter, it comes into close contact with both inner sides of the bag and stops at that position to perform a series of operations such as removing air or filling with gas.

When the work of evacuating or filling the bag with gas is completed, the motor 28 rotates to rotate a pair of drive bodies 52, 52 such as chains, and a pair of heat sealing rods 17, 17 move up and down in the closing direction. It moves to press against the rim of the bag, creating a heat seal.

A pair of driving bodies 60, 60 such as a pair of chains also rotate in conjunction with the vertical movement of the heat sealing rod, and a pair of nozzles 15, 15 connected to the pair of driving bodies 60, 60 such as a chain move backward. Then, during heat sealing, it is pulled out from the rim of the bag and separated.

Since the pair of nozzles 15, 15 are provided so as to be inclined slightly inward, the backward movement of the pair of nozzles 15, 15 after suction of air and filling of gas inside the bag is completed. This can be done by breaking the top and bottom surfaces of the bag that is in pressure contact with the nozzle. At this time, since the inner part of the nozzle is formed into a wedge shape, the backward movement can be performed more smoothly.

Further, even during heat sealing, the mouth edge of the bag is still held under pressure by the pair of clamping rods 16, 16.

After the heat sealing is completed, the motors 27 and 28 rotate in the opposite direction, unlike the previous case, and the pair of clamping rods 16,
16 and the pair of heat sealing rods 17, 17 move up and down in the opening direction and return to the old state. As the pair of heat seal rods 17, 17 move, the pair of nozzles 1
5 and 15 are pulled forward by the action of a pair of springs 64 and 64 to return to the position before retreating, and at the same time as the pair of clamping rods 16 and 16 move, the pair of nozzles 15 and 15 are closed. direction and return to the initial state to prepare for the next packaging operation.

Embodiment An example of implementing the present invention will be described below based on the drawings.

As shown in FIG. 2, the device of the present invention is formed into a single box shape as a whole, and the rim of the bag for the desired packaged material is inserted into the center of the front lid 12 that covers the front of the device main body 11. A window hole 13 is provided for the package, and a mounting table 14 for placing the article to be packaged protrudes from the lower edge of the window hole, the height of which is adjustable.

FIG. 5 is a front view with the front cover 12 removed. On the front side of the main body 11 of the device, a pair of nozzles 15, 15 are provided in the center with their tips protruding forward by a required length, and above and below the nozzles 15, 15 are provided. A pair of upper and lower clamping rods 16, 16 and a pair of upper and lower heat-sealing rods 17, 17 are provided, which move up and down while keeping each other horizontal.

The pair of nozzles 15, 15 are fitted in a pair of sliding bodies 19, 19, which are formed by slidingly fitting the four corners of the four support rods 18, front and back and top and bottom, so that they can move back and forth. The pair of sliding bodies 19, 19 are movable left and right in order to spread the mouth edge of the bag left and right. The pair of nozzles 15, 15 are not parallel to each other, but are slightly inclined inward as shown in FIG.

It is desirable to set this angle of inclination in the range of 1 degree to around 20 degrees. By setting this angle, the pair of nozzles 15, 15 can It is possible to break the top and bottom surfaces of the bag that is in pressure contact and retreat smoothly.

As shown in FIGS. 7 and 9, the pair of nozzles 15, 15 are formed to be flat and elongated, and their outer portions are approximately V-shaped.
The inside is wedge-shaped.

The V-shaped outer portion is formed to match the shape of both sides of the bag, so that even if the bag has a three-sided seal as shown in Figure 10, it can be accurately positioned on both sides to suck in air.

A pair of elongated guide grooves 20, 20 are provided in the sliding bodies of the pair of sliding bodies 19, 19,
At the time of heat sealing, the pair of nozzles 15, 15 are guided by a guide rod 21 loosely fitted so as to be movable left and right, move backward by the length of the guide grooves 20, 20, and are removed from the mouth edge of the bag body. ing.

Both ends of the four support rods 18 are fixed to a pair of support plates 22, 22, and the pair of guide grooves 20, 20 are formed in the pair of support plates 22, 22.
A pair of guide grooves 23, 23 similar to the above are provided, and both ends of the guide rod 21 are slidable.

The pair of clamping rods 16, 16 have elongated gaps 24, 24 formed in their intermediate portions, and are connected at both ends to form a rectangular frame shape in plan view. , a pressure contact rod 25 made of soft rubber or the like is provided.

The pair of clamping rods 16, 16 move up and down to press and hold the mouth edges of the bag which are spread laterally by the pair of nozzles 15, 15, and remove the air inside the bag to create a vacuum. When filling the bag with nitrogen gas or the like in a vacuum state, and when performing heat sealing, the mouth edge of the bag is pressed and held from above and below.

The pair of heat sealing rods 17, 17 are provided so as to move up and down within the gap 24 of the pair of clamping rods 16, 16, and a heater 26 is provided on the surface of the lower heat sealing rod 17. The surface of the upper heat-sealing rod 17 is covered with silicone rubber or the like and holds the mouth edge of the bag horizontally under pressure.

The pair of heat-sealing rods 17, 17 move up and down during heat-sealing to heat-seal the mouth edge of the bag.

The heater 26 is set to automatically turn off after a certain period of time via a timer, and the heat sealing time can be adjusted as appropriate depending on the material of the bag.

At the bottom of the device main body 11 are two motors 27,
28, one motor 27 is provided with a worm gear 29 and a worm wheel 30.
A rotating shaft 31 is pivotally attached through the rotating shaft 31, and a pair of bevel gears 32, 32 are provided at both ends of the rotating shaft 31.
A pair of bevel gears 33, 33 and a pair of gears 34,
A pair of driving bodies 35, 3 such as chains via 34
5 have been contacted.

This pair of driving bodies 35, 35 such as chains,
A pair of gears 36 provided at the top of the device main body 11,
36 and the pair of gears 34, 34, and the inner lower part of the pair of drive bodies 35, 35 such as chains is connected to the lower clamping rod 1.
6, and the outer upper part is fixed 38, 38 to the upper clamping rod 16.

For this reason, the drive bodies 35, 3 such as a pair of chains
If 5 rotates, a pair of clamping rods 16, 16
move up and down in the closing direction at the same speed, while when rotating in the opposite direction, the pair of clamping rods 16, 16 move up and down in the opening direction.

A pair of gears 40, 40 are connected to the pair of gears 36, 36 via a pair of clutches 39, 39.
is attached to the shaft, and this pair of gears 40, 40
, a pair of driving bodies 41, 41 such as a pair of chains, a pair of gears 42, 42, a pair of gears 43, 43 coaxial therewith, and a driving body 4 such as a pair of chains.
A pair of gears 45, 45 are connected via 4, 44.

The upper portions of the driving bodies 44, 44 such as the pair of chains are fixed to the pair of sliding bodies 19, 46, 44.
6 has been done.

When the mouth of the bag body is inserted into the pair of nozzles 15, 15 and the motor 27 is rotated, the pair of nozzles 1
5 and 15 are a pair of clamping rods 1 that slide to the left and right to fully expand the mouth edge of the bag in the horizontal direction.
6 and 16 respectively move up and down to close and press against the mouth edge of the bag.

At this time, the pair of nozzles 15, 15 are configured to move by the length of the pressure rod 25, but are stopped at an appropriate position depending on the size of the bag by the action of a clutch 39. There is. That is, the pair of nozzles 15, 15 are configured to stop at a position where the mouth edge of the bag body is widened to the left and right.

Next, a rotating shaft 48 is attached to the other motor 28 via a worm gear 46 and a worm wheel 47, and a pair of bevel gears 49, 49 are provided at both ends of this rotating shaft 48. A pair of driving bodies 52, 52 such as chains are connected to the pair of bevel gears 49, 49 via a pair of bevel gears 50, 50 and a pair of gears 51, 51.

This pair of driving bodies 52, 52 such as chains,
A pair of gears 53 provided at the top of the device main body 11,
53 and the pair of gears 51, 51, and the inner lower portions of the pair of drive bodies 52, 52 such as chains are fixed to the lower surface of the end of the lower heat sealing rod 17. , 54, and the outer upper portions are fixed 55, 55 to the upper and lower ends of the upper heat-sealing rod 17.

A pair of sliding rods 56, 56 are provided at the inner central portions of the driving bodies 52, 52 such as the pair of chains, and the lower ends of the pair of sliding rods 56, 56 are heat-sealed below. It is fixed 57 to the upper surface of the rod 17, and its upper end passes through the end of the upper heat-sealing rod 17 and is connected to a drive body 52 such as a pair of chains.
52 is fixedly attached 58.

Since the driving bodies 52, 52 such as a pair of chains and the pair of heat sealing rods 17, 17 are configured as described above, the driving bodies 52, such as a pair of chains
When 2 and 52 rotate, the lower heat sealing rod 17
The upper heat sealing rod 17 is pulled upward, and the upper heat sealing rod 17 is
It is pulled down and moved up and down in the closing direction, and is pressed into contact with the mouth edge of the bag to perform a heat seal. At this time, the pair of sliding rods 56, 56 slide within the upper heat-sealing rod 17.

A pair of guide rods 59, 59 are provided through both ends of the pair of heat seal rods 17, 17, and the pair of heat seal rods 17, 17 are attached to the pair of guide rods 59, 59. It moves vertically up and down while being guided and held horizontally.

One end of a pair of drive bodies 60, 60, such as a pair of chains, is fixed to the lower surface of both ends of the lower heat sealing rod 17.
61, and the other end of the driving bodies 60, 60 such as a pair of chains is fixed to the guide rod 21 via a pair of gears 62, 62 and a pair of gears 63, 63.

As the lower heat sealing rod 17 moves upward during heat sealing, the driving bodies 60, 60 such as the pair of chains are also pulled upward, and at the same time, the guide rod 21 moves backward inside the guide groove 20. to move the pair of nozzles 15, 15 backward.

After the heat sealing is completed, the lower heat sealing rod 17 moves downward and at the same time the guide rod 21 is moved by a pair of springs 64,
64, the pair of nozzles 1
5 and 15 move forward and return to the old state.

Figure 3 shows a state in which a vacuum pump 67 and a gas cylinder 68 are connected to the base ends of a pair of nozzles 15, 15 via electromagnetic valves 65, 66, and after the air inside the bag is removed to create a vacuum state. , solenoid valve 65
is closed, and then the solenoid valve 66 is opened to inject gas. The amount of gas injected is adjusted by adjusting the injection time using a timer.

Figure 4 shows a steam separator with a pair of nozzles 15,
A steam/water separator 70 having a filter 69 is provided between the vacuum pump 15 and the vacuum pump 67 to separate air and moisture. Thereby, even foods containing moisture can be easily vacuum packed. At this time, the water inside the bag is also discharged via the steam separator 70 at the same time. Further, when filling the bag with chitso gas or the like depending on the type of food, the gas cylinder 68 is used. This vacuum pump 67 and gas cylinder 6
8 and the solenoid valves 65, 66 are automatically operated by known electrical methods. 71 in the diagram
is a rubber valve.

Effects of the invention Therefore, according to the invention, the mouth edge of the bag body is held in pressure contact with the two nozzles by the pressure contact rod provided on the clamping rod with both ends fully expanded.
The mouth edge of the bag is held in a completely flat state with no wrinkles or the like, and air can be removed or filled with gas smoothly and efficiently.

It can be heat-sealed in the same state as above, and the heat-sealed part not only has a nice finish, but also has no wrinkles or the like and can be completely packaged. Moreover, since the pair of clamping rods are provided with two pressing rods at the front and back with a gap, the bag mouth edge can be held more stably in two positions by changing the position. be.

Next, the air inside the bag is removed at two locations using two pairs of nozzles, so the air moves evenly during removal without being biased in one direction, and the bag is not extremely deformed. The air can be removed smoothly and efficiently without any problems.

In particular, the nozzles are located at both ends of the bag, and the air is discharged with the mouth of the bag fully expanded, which prevents deformation of the bag and allows air to be removed without causing wrinkles. can be carried out smoothly and completely.

In addition, the present invention links the left and right movement of the nozzle to widen the mouth edge of the bag to the left and right with the vertical movement of the clamping rod, and also links the retreating movement of the nozzle during heat sealing with the vertical movement of the heat sealing rod. Therefore, a series of continuous operations such as air extraction, gas filling, and heat sealing can be performed completely and reliably without any slight deviation.

In addition, the nozzle and clamping rod, and the nozzle and heat sealing rod are all mechanically linked via a driving body such as a chain, which doubles the reliability of their operation and at the same time prevents failures. It can be used for a long period of time without any damage.

Furthermore, since a clutch is installed to freely control the left and right movement of the nozzle, it is possible to vacuum pack or gas-fill pack any bag, regardless of the size of the bag, making it easy to remove parts. It is possible to continuously package many types of products without changing them.

In addition, in the present invention, the two nozzles are not provided parallel to each other, but are provided at a slight inward inclination, and the inner part of the nozzle is formed almost wedge-shaped, so that when the nozzle moves backward, After suction of the air inside the bag is completed, the nozzle can be smoothly retracted by breaking the top and bottom surfaces of the bag that are in pressure contact with the nozzle.

Furthermore, in this invention, since the outer part of the nozzle is formed into a V-shape, even if the bag is sealed on three sides, it can be completely and reliably sealed without wrinkling during heat sealing. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is an operation explanatory diagram showing an example of a conventional device, and FIG. 2 is a perspective view showing the entire device according to the present invention.
Fig. 3 is an explanatory diagram showing the nozzle, vacuum pump, and gas cylinder of the present invention, Fig. 4 is an explanatory diagram showing the steam-water separator of the device to which the present invention is applied, and Fig. 5 is an explanatory diagram showing the front of the device to which the present invention is applied. 6 is a partially cutaway side sectional view of the same as above; FIG. 7 is a partially cutaway plan view showing the nozzle of the present invention; FIG. 8 is a front view of a conventional nozzle; Figure 9 is a front view of the nozzle of the present invention, Figure 10 is a plan view showing a bag with three-sided seals,
Fig. 11 is an explanatory diagram of the operation of a conventional nozzle, Fig. 12 is a longitudinal sectional view of the conventional nozzle, Fig. 13 is a side sectional view showing a device equipped with the conventional nozzle, and Fig. 14 is a plan view of the same. be. 11...Device main body, 15...Nozzle, 16...
Clamping rod, 17... Heat sealing rod, 18... Supporting rod,
19...Sliding body, 20...Guide groove, 21...Guide rod, 24...Gap, 25...Pressure rod, 26...Heater, 39...Clutch, 35, 41, 44, 6
0...Driver.

Claims (1)

[Scope of utility model registration request] A pair of left and right nozzles 15, 15, which are movable left and right and back and forth, are provided at the center of the front surface of the device main body 11, with their tips protruding forward by a required length, and the pair of nozzles 15, 15 are connected to a pair of sliding bodies 19, 19. At the same time, the four corners of the pair of sliding bodies 19, 19 are fitted into the four support rods 18 so as to be movable back and forth,
A pair of elongated guide grooves 20, 20 are provided on both sides of the pair of sliding bodies 19, 19, and a pair of nozzles 1
5 and 15 are loosely fitted into the guide rod 21 so as to be movable left and right, and the guide rod 21 is loosely fitted into the pair of guide grooves 20 and 20 so as to be movable back and forth. The clamping rods 16, 16 and the pair of upper and lower heat sealing rods 17, 17 are connected to the pair of nozzles 15, 15.
The pair of heat-sealing rods 1 are arranged at upper and lower positions of
A long clear gap 24 through which the rods 7 and 17 can freely pass is provided in the middle part of the pair of clamping rods 16, 16, and both ends of the pair of clamping rods 16, 16 are connected to form a rectangular frame shape. A pair of pressure contact rods 25, 25 made of soft rubber or the like are attached to the pressure contact portion of the
A heater 26 is provided at one of the pair of heat seal rods 17, 17, and a heater 26 is provided at one of the pair of heat seal rods 17,
A pair of clutches 3 that adjust the left and right movements of 5 and 15
9 and 39 are provided in the driving portion of the pair of nozzles 15 and 15, and drive a pair of chains or the like for interlocking the horizontal movement of the pair of nozzles 15 and 15 and the vertical movement of the pair of clamping rods 16 and 16. body 35, 35, 4
1, 41, 44, 44 are provided, and the pair of nozzles 15, 15 are moved back and forth, and the pair of heat sealing rods 1 are provided.
A pair of drive bodies 60, 60 such as chains are provided to interlock the vertical movement of the nozzles 7, 17, and the pair of nozzles 15, 15 are slightly inclined inward, respectively, and the angle of inclination is approximately 1 degree to 20 degrees. set to range,
A packaging device for vacuum or gas filling, characterized in that the pair of nozzles 15, 15 have outer parts formed in a roughly V-shape and inner parts formed in a roughly wedge-shape.