JP2003081207A - Filling and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a tubular film which is excellent in flexibility and impact strength, has good cleanliness on an internal surface, and is manufactured by a coextrusive inflation technique to be adapted to a vertical filling and packaging machine for continuously and automatically filling a substance to be filled such as a liquid or a viscous substance. SOLUTION: A film guide roller 18 is provided at an upper end of heat sealers 16 disposed between a film pressing roller 14 and a film feed roller 15 in order to allow a tubular film 5 to be smoothly fed to between the opposite heat sealers 16 and 16.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a filling and packaging machine.

[0002]

2. Description of the Related Art A filling and packaging machine which is a vertical type and which continuously and automatically fills an object to be filled such as a liquid or a viscous body, in the process of feeding a strip-shaped film drawn from a film roll, aligns the left and right edges and heat seals them. To make a tubular intermediate package, and then perform horizontal sealing, which is the bottom seal, and also fill the object to be packaged inside, and seal the preceding package and the next package by the next seal. It is a machine that can perform bottom sealing of, and a conventional example of such a filling and packaging machine is
For example, there is one as shown in FIG.

In FIG. 5, 101 is a film roll wound with a heat-sealable synthetic resin sheet film 102 which is a packaging material, and 103 is a stand upright on a foundation to indicate each of the below-mentioned equipment necessary for filling and packaging. The film roll 101 is a frame that can be attached. The film roll 101 is supported by two rotatable support rollers 104 and 105 horizontally arranged at an intermediate portion in the height direction on one side of the frame 103. ing.

Reference numeral 106 denotes a film feeding device disposed obliquely above the film roll 101 in the film feeding direction. The film feeding device 106 is made of rubber and can be rotated by a film feeding motor 107 via a power transmission means 108. A film feeding roller 109,
The film feeding roller 109 is provided with a rotatable film pressing roller 110 for pressing the film 102 in cooperation with the film feeding roller 109 when the film 102 is fed from the film roll 101.

Although not shown, coil springs are provided at both ends in the longitudinal direction of the shaft 111 for rotatably supporting the film pressing roller 110, and the film pressing roller 110 uses the coil spring to rotate the shaft 111. It is configured to be urged toward the film feeding roller 109 side via the.

Reference numeral 112 denotes a tension applying device arranged on the side away from the film roll 101 so as to be positioned obliquely above the film feeding device 106.
Reference numeral 2 denotes a rotatable roller 113 made of rubber, and a film 102 wound around the roller 113 by applying a rotational force in a counterclockwise direction about a shaft 114 as a fulcrum in FIG.
The roller 113 to press the film 102 to give a constant tension to the film 102, and the shaft 1
Film holding plate 11 via an arm 116 attached to 14
5 is provided with a coil spring 117 for applying a counterclockwise rotational force in FIG.

Reference numeral 118 denotes a rotatable tension roller which is arranged at a horizontal intermediate portion between the film feeding roller 109 and the roller 113 so as to be positioned below the film feeding roller 109 and the film pressing roller 110.
The tension roller 118 is used for the film feeding device 106.
When the film 102 is unwound from the film roll 101, the film unwinding roller 109 is driven to descend by its own weight so that the film 102 can be stocked, and the film unwinding roller 109 of the film unwinding device 106 is stopped. The tension that acts on the film 102 while it is moving can be increased.

Although not shown, the tension roller 1
18 is turned on when the tension roller 118 rises and reaches the upper limit position, and the film feeding device 10 is turned on.
A switch is provided so as to give a drive command to the film feeding motor 107 of No. 6 and turn off when the tension roller 118 descends to reach the lower limit position to give a stop command to the film feeding motor 107 of the film feeding device 106. Has been.

Reference numeral 119 denotes a meandering correction device which is arranged above the film roll 101 and on one side of the frame 103, and the meandering correction device 119 includes a member 120 which swings in a direction orthogonal to the paper surface. , The meandering correction roller 12 rotatably provided at the upper and lower ends of the member 120 at intervals.
1 is provided.

Rotations 122 and 123 are positioned above the tension applying device 112 and spaced apart vertically, and are arranged on the center side of the frame 103 so as to face the meandering correction roller 121 in the meandering correction device 119. It is a free idling roller.

Reference numeral 124 is a film tubular guide member disposed on the other side upper portion of the frame 103, and the film tubular guide member 124 is formed in the shape of a collar of clothes.

Reference numeral 125 denotes a vertical pipe-shaped filling nozzle which is inserted into the film tubular guide member 124 and extends vertically.
Reference numeral 126 denotes a film tubular guide member 1 directly below the film tubular guide member 124 with reference to the filling nozzle 125.
The tubular film 127, which is arranged so as to be located on the opposite side to 24, is heat-sealed at the seams on both sides of the film 102 that is formed into a tubular shape by joining both sides in the width direction to form a tubular film 127 having no non-adhesive portion in the circumferential direction. It is a heat sealing device to form.

A pair of left and right press rollers 128 is arranged below the heat seal device 126 and presses the heat sealed portion of the tubular film 127 from the left and right (direction perpendicular to the paper surface) and presses 129. Two tubular films 1 are arranged on each of the left and right sides of the 125.
It is a cylindrical film feed roller that feeds downward by sandwiching the left and right ends of 27 from the front and rear (direction parallel to the paper surface). The tubular film feed roller 129 can be driven by a driving device (not shown).

Reference numeral 130 denotes an ironing roller device. The ironing roller device 130 is composed of two pairs of front and rear levers 131 and 131, which can be rotated back and forth about the upper end as a fulcrum by a driving device (not shown). , And an ironing roller 132 pivotally supported at the lower end of each lever 131. The ironing roller 132 can be driven by a driving device (not shown).

Numeral 133 is arranged below one of the ironing rollers 132 in the ironing roller device 130, and has a horizontal seal heater 134 built-in for laterally sealing the flattened portion of the tubular film 127. The horizontal seal heater block 133 is a horizontal seal heater block 133. The horizontal seal heater block 133 is moved in the horizontal direction by the driving device 135 so that the horizontal seal heater block 133 can approach and separate from the flat portion of the tubular film 127.

Numeral 136 is disposed below the other squeezing roller 132 in the squeezing roller device 130, and the squeezed and flattened portion of the tubular film 127 cooperates with the horizontal seal heater block 133 to move laterally. The horizontal sealing table 136 is a horizontal sealing table for sealing. The horizontal sealing table 136 is moved in the horizontal direction by the driving device 137, and the tubular film 127
It is designed so that it can approach and separate from the flat part of. Reference numeral 138 denotes a horizontal sealing portion cutting blade which is provided on the horizontal sealing base 136 and can be horizontally moved by a driving device (not shown), and the horizontal sealing portion of the tubular film 127 filled with the filling object 139. Can be cut in the lateral direction (direction perpendicular to the paper surface) to form the filled packaged product 140.

When manufacturing the filled and packaged product 140, the work is performed as described below. That is, when the tension roller 118 is at the upper limit position, a switch (not shown) is turned on, and the film feeding device 10
The film feeding motor 107 of No. 6 is activated. Therefore, the film feeding roller 1 is driven through the power transmission means 108.
09 is driven to feed the film 102 from the film roll 101, and the fed film 102 is fed to the tension roller 118 side by the feeding roller 109. A laminated film is used as the film 102.

Film roll 101 to film 102
When the film is fed, the tension roller 118 is lowered by its own weight in a state where tension is applied to the film 102, and the film 102 is stocked between the film feeding device 106 and the tension applying device 112. When the tension roller 118 descends to the lower limit position, the switch is turned off and the film feeding motor 107 is stopped.
The feeding of the film roll 101 is also stopped.

On the other hand, since the tubular film feed roller 129 is intermittently driven at fixed time intervals, the film 102 fed from the film roll 101 is pulled by the tubular film feed roller 129, and the tension applying device 11 is provided.
It is fed to the film tubular guide member 124 via the second roller 113, the meandering correction roller 121 of the meandering correction device 119, and the idling rollers 122 and 123.

The film 102 that has reached the film tubular guide member 124 is tubularized by the film tubular guide member 124 in a state where the joints on both sides are not joined and surrounds the outer periphery of the filling nozzle 125. After being fed downward, the seams on both sides of the film 102 are heat-sealed in the vertical direction in the heat-sealing device 126 to form a tubular film 127 that serves as a package.

Further, the tubular film 127 is filled with the filling object 139.
Prior to supplying the heat, the pre-formed filling and packaging product 140 is connected to the lower end of the tubular film 127, and the horizontal seal heater block 133 and the horizontal seal base 13 are connected.
The ironing roller device 1 is located slightly below 6
The squeezing rollers 132 in front of and behind 30 are rotated by a driving device (not shown), and as shown in FIG.

Therefore, the tubular film 127 is formed with a flattened portion over a predetermined length in the longitudinal direction, and the tubular film 127 is further lowered by a predetermined amount and stopped. Next, the driving devices 135 and 137 are actuated to bring the horizontal seal heater 134 and the horizontal seal base 136 close to each other, and the flat portion of the tubular film 127 which is stopped is heat-sealed to form a close horizontal seal portion 127a. It

Further, at the same time, the horizontal sealing portion cutting blade 138 is actuated to cut the middle portion in the height direction of the horizontal sealing portion 127a in the horizontal direction (direction perpendicular to the paper surface), and the horizontal sealing portion 1 is cut.
Prefilled packaged product 1 formed at the bottom of 27a
40 falls downward. At this time, a ceiling seal is formed by the horizontal seal portion 127a on the upper side of the dropped filled packaged product 140 to seal the filled packaged product 140, and the horizontal seal portion 127a at the lower end of the tubular film 127 causes the next filling. The bottom seal of the tubular film 127 to which the object 139 is supplied is formed.

When the upper part of the tubular film 127 filled with the filling object 139 is cut after heat sealing and a bottom seal is formed at the lower end of the tubular film 127 remaining on the ironing roller device 130 side, The squeezing roller 132 of the squeezing roller device 130 is opened, and the filling target 139 is supplied from the filling nozzle 125 into the tubular film 127 having the bottom seal formed at the lower end.

When the tubular film 127 is filled with a predetermined object 139 to be filled, the tubular film 127 and the film 102 are pulled again by the intermittent drive of the tubular film feed roller 129. Tubular film 127
The portion filled with the object to be filled 139 passes through a gap formed between the front and rear squeezing rollers 132, 132 to descend to a predetermined position, and when descending to a predetermined position, the squeezing roller device 130 closes again to form a tubular shape. The portion of the film 127 not filled with the filling object 139 is the squeezing roller 132.
Flatten by.

Therefore, a space not filled with the filling object 139 is formed in the upper part of the flattened portion of the tubular film 127, and the filling object 139 is formed in the lower end of the flattened portion. A filled packaged product 140 is formed that is filled and sealed at the top.

In such a state, the horizontal seal heater block 133 and the horizontal seal base 136 are activated, the flattened portion is heat-sealed to form a horizontal seal portion 127a, and the horizontal seal portion cutting blade 138 moves the horizontal seal portion. Seal part 12
7a is cut at the middle portion in the height direction, and the horizontal seal portion 127a
The filled packaged product 140 hanging at the lower end of the item falls downward. In addition, a space for newly supplying the filling object 139 is formed above the tubular film 127.

The above-described conventional filling and packaging machine uses the band-shaped film 102, and the band-shaped film 102 is likely to have dirt attached to the surface. Therefore, when the tubular film 127 is formed by tubularizing the tubular film guiding member 124, there is a possibility that dirt may be attached to the tubular film 127, and the belt-shaped film 102 may be tubular. Film 1
27 to form a film tubular guide member 124.
However, there is a problem that the equipment becomes large and the price becomes expensive.

[0029]

SUMMARY OF THE INVENTION Therefore, in order to solve the above-mentioned problems, the inventor of the present invention has a strip-shaped film 1
No. 02 was made into a tubular film by using the film tubular guide member 124, and it was examined to use a tubular film formed in a tubular shape from the beginning. Depending on its type, such a tubular film is preferable from the viewpoint of hygiene because stains do not adhere to the inside due to the manufacturing process.

By the way, in general, as a packaging film, there are a single film formed of one kind of resin and a composite film in which plural kinds of resins are laminated. Thus, the composite film has, for example, nylon on both surfaces and polyethylene on the inner surface between the surfaces, and in the case of this composite film, the heat-sealing and moisture-proof properties are polyethylene on the inner surface and gas. Nylon on the surface plays the role of barrier, and it becomes a high-performance film. For this reason, in recent years, composite films have become the mainstream as packaging films, and composite films include laminate films and coextrusion films.

As a typical laminated film, there is a method of manufacturing a dry laminated film by pasting a ready-made film. However, this dry laminated film is stretched, and is excellent in hardness and heat sealability. Its mechanical suitability is good and it has been used in many automatic filling and packaging machines.

On the other hand, in the co-extruded film, a plurality of kinds of resins are individually extruded from different extruders, and they are laminated in a die having a special structure to form a composite film. The exit shape is extruded from a linear die to produce a flat sheet-shaped coextrusion film, and a composite film is formed by laminating in the same manner as the T-die method. There is an inflation method in which a coextrusion film having a cylindrical cross-section is produced by extrusion from a circular die.

Since these co-extruded films are suddenly produced as a composite film by being extruded from a die, the features of the non-stretched film, namely,
It has the advantages of flexibility and excellent impact strength. Further, in the case of a coextruded film having a tubular cross section, a multilayer tubular film having two or more layers can be formed in one step, and therefore, the cleanliness of the inner surface is very good.

Thus, whether the laminated film or the tubular film formed by co-extrusion by the inflation method is suitable for a bag-filling type automatic filling and packaging machine using a bag-made film. There is no superiority or inferiority regarding either. However, as shown in FIG. 5, a packaging film applied to a filling and packaging machine that automatically fills a liquid and a viscous body continuously as shown in FIG. Laminated films are the mainstream because of their good mechanical suitability such as less meat, and there are virtually no examples of the use of tubular films produced by the coextrusion inflation method.

On the other hand, the coextruded tubular film is soft because it is unstretched and has a large amount of stretch and flakes. For this reason,
When a co-extruded tubular film is applied to the filling and packaging machine as shown in FIG. 5, the open vertical sealing portion of the tubular film 127 is sandwiched by the heat sealing device 126, and intermittently downward while heat sealing. Cylindrical film 127 when feeding
Of the tubular film 127 due to the frictional resistance of the film and the extension and distortion caused by the heating of the tubular film 127.
The tubular film 127 cannot be reliably fed to the heat-sealing device 126 because it is caught in the upper end inlet portion of 26. Therefore, in this case, vertical sealing is difficult and the filled and packaged product 1
40 cannot be manufactured.

[0036]

In view of the above situation, the present invention has excellent flexibility and impact strength, and can produce a multilayer tubular film having two or more layers in one step. The purpose is to make it possible to apply a tubular film produced by the co-extrusion inflation method, which has a very good cleanliness, to a filling and packaging machine that continuously and automatically fills a filling object such as a liquid or a viscous body in a vertical type. It was done as.

[0037]

The filling and packaging machine according to the first aspect of the present invention is configured so that it can be fed from a film roll mounted on a bobbin and intermittently fed from the upper side to the lower side.
A filled packaged product can be produced by filling a filling object from a filling nozzle inserted from a film longitudinal cutting portion formed on one side of the tubular film in a tubular film in which the vicinity of the lower end is laterally sealed. The filling and packaging machine, wherein the filling and packaging machine vertically seals the film longitudinal direction cut portion of the tubular film, the tubular film in the film longitudinal direction cut portion side of the tubular film in the thickness direction. A heat sealing device provided so as to sandwich the film, and a film pressing roller provided so as to be located above the heat sealing device so as to sandwich the tubular film in the thickness direction on the heat sealing device installation side of the tubular film, An upper end of the heat seal device, which is provided below the heat seal device and includes film feed rollers provided on both left and right sides of the tubular film so as to sandwich the film from the thickness direction. To, to be smoothly fed to hot sealing apparatus facing the tubular film, is provided with a film guide roller which is adapted to guide and clamping the tubular film from the thickness direction.

In the filling and packaging machine according to the second aspect of the present invention, the tubular film is manufactured by the coextrusion inflation method.

In the filling and packaging machine according to the third aspect of the present invention, the film cutter forming the film longitudinal cut portion on the tubular film is provided at a predetermined position of the line for feeding the tubular film from the upper side to the lower side. There is.

In the filling and packaging machine according to the fourth aspect of the present invention, the film longitudinal cut portion may be formed in advance on one side of the tubular film of the film roll before being mounted on the bobbin.

According to the present invention, it is possible to continuously and efficiently produce a filled packaged product filled with an object to be filled such as a liquid or a viscous material by using the tubular film produced by the co-extrusion inflation method. Since the inner surface of the tubular film is clean, the cleanliness of the object to be filled can be kept high.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an example of an embodiment of a filling and packaging machine of the present invention, which is a vertical type and is capable of continuously and automatically filling a liquid or a viscous body. Reference numeral 1 denotes a frame body which is erected on a foundation so that each of the below-mentioned devices necessary for filling and packaging can be attached, and 2 is a bobbin disposed on the frame body 1 so as to be rotatable and stopable. Film roll 3 formed by winding a heat-sealable resin tubular film as a packaging material
Is to be installed. The tubular film forming the film roll 3 is manufactured by the above-mentioned co-extrusion inflation method, and has a cross-section formed in a multi-layered tubular shape. When the film roll 3 is formed and when it is unrolled from the bobbin 2, the diameter of the film is increased. It is crushed in the direction and is formed into two folds.

Reference numeral 4 denotes a tension roller for applying a tension to the tubular film 5 fed from the film roll 3.
Film rollers 3 and 6 are idle rollers.
The tubular film 5 fed out from the sheet is fed to the downstream side through the idling roller 6, the tension roller 4, and the idling roller 7 in a folded state.

8 is above the film roll 3 and the frame 1
It is a meandering correction device arranged so as to be located on one side,
The meandering correction device 8 includes a member 9 that swings in a direction orthogonal to the paper surface, and a meandering correction roller 10 that is rotatably provided at the upper and lower ends of the member 9 with a space therebetween.

Reference numeral 11 denotes an idling roller provided on the side of the frame 1 opposite to the side on which the meandering correction device 8 is installed so as to face the upper meandering correction roller 10, and 12 denotes an idling roller arranged diagonally below the idling roller 11. From the idling roller 11 to the idling roller 1
2, a film cutter 13 for cutting one side of the tubular film 5 in a folded shape fed from the idling roller 11 to the idling roller 12 in the longitudinal direction, that is, in the longitudinal direction of the film. Is provided. In FIG. 3, the film cutter 13 is provided on the left side of the tubular film 5 folded in two.

A pair of front and rear rotatable film pressing rollers 14 is provided below the idling roller 12 for pressing the vertically cut side of the tubular film 5 from both sides in the thickness direction. Like the film cutter 13, 14 is provided on the left side of the tubular film 5 folded in two in FIG.

Reference numeral 15 denotes a drivable film feed roller provided on both left and right sides of the tubular film 5 so as to be positioned below the film pressing roller 14 and capable of pressing the tubular film 5 from both sides in the thickness direction. Is.

Numeral 16 is disposed between the film pressing roller 14 and the film feeding roller 15 and reciprocates in the thickness direction of the tubular film 5 by a driving device such as a solenoid, and the left side of the tubular film 5 in FIG. Is a pair of front and rear heat sealing devices that are arranged so as to approach and separate from the tubular film 5, and the heat sealing device 16 presses the tubular film 5 when it approaches the tubular film 5, The longitudinal cuts of the can be heat sealed. As a result of heat sealing by the heat sealing device 16, a vertical heat sealing surface 17 is formed on the left side portion of the tubular film 5 as shown in FIG.
Can be formed.

Reference numeral 18 denotes a pair of front and rear members which are attached to an upper portion of the heat sealing device 16 so as to be positioned below the film pressing roller 14 so that the heat sealing device 16 can reciprocate in the thickness direction of the tubular film 5. It is a rotatable film guide roller, and the end of the film guide roller 18 facing the tubular film 5 slightly projects to the tubular film 5 side from the surface of the heat sealing device 16 facing the tubular film 5. Alternatively, it is formed at substantially the same position as the surface of the heat sealing device 16 that faces the tubular film 5.

Thus, the heat sealing device 1 before and after it was opened
6 is closed, the tubular film 5 is pressed by the heat sealing device 16, and the film feed roller 15 is driven to drive the tubular film 5
When the film is intermittently fed downward, the tubular film 5 is fed downward while being guided by the film guide roller 18, and the tubular film 5 is fed at the upper end entrance of the heat sealing device 16. It is designed not to get caught in the section.

Reference numeral 19 extends in the horizontal direction so that it can be inserted into the tubular film 5 from the longitudinal cut portion of the tubular film 5 between the upper idling roller 12 and the lower film pressing roller 14. The filling nozzle 19 is a pipe-shaped filling nozzle and is bent 90 degrees in the tubular film 5 and extends downward. Thus, the filling nozzle 19
Is for filling an object to be filled with a liquid or a viscous material into the tubular film 5 which is laterally sealed near the lower end.

20 is an ironing roller device. The ironing roller device 20 is composed of a pair of front and rear levers 21 and 21 which can be rotated back and forth about the upper end as a fulcrum by a driving device (not shown). , And an ironing roller 22 pivotally supported at the lower end of each lever 21. Ironing roller 2
2 can be driven by a driving device (not shown). The lower end of the filling nozzle 19 is located near the upper end of the lever 21 of the ironing roller device 20.

23 The ironing roller device 20 has a built-in horizontal seal heater 24, which is disposed below one of the ironing rollers 22 and laterally seals the flattened portion of the tubular film 5 which is squeezed. The horizontal seal heater block is a horizontal seal heater block 23. The horizontal seal heater block 23 is moved in the horizontal direction by a driving device so that the horizontal seal heater block 23 can approach and separate from the squeezed flat portion of the tubular film 5.

25 The squeezing roller device 20 is disposed below the other squeezing roller 22, and the squeezed and flattened portion of the tubular film 5 cooperates with the horizontal seal heater block 23 to perform a horizontal seal. Therefore, the horizontal sealing bases are horizontally opposed to each other with the tubular film 5 sandwiched between them, and the horizontal sealing base 25 is moved horizontally by the driving device, and the tubular film 5 is squeezed and flattened. It is designed to be able to approach and separate from the part.

Reference numeral 26 denotes a horizontal sealing portion cutting blade which is provided on the horizontal sealing base 25 and can be moved horizontally by a driving device (not shown). The horizontal sealing portion cutting blade 26 of the tubular film 5 is filled with the material 27 to be filled. The horizontal seal portion is cut in the horizontal direction (direction perpendicular to the paper surface) so that the filled packaged product 28 can be formed.

Next, the operation of the illustrated example will be described. Prior to producing the filled and packaged product 28, the bobbin 2 is equipped with a film roll 3 obtained by crushing the tubular film 5 produced by the co-extrusion inflation method in the radial direction and winding the tubular film 5 into two folds.

The tubular film 5 fed from the film roll 3 is, as shown in FIG. 1, an idling roller 6, a tension roller 4, an idling roller 7, and meandering correction rollers 10 and 10 of a meandering correction device 8. , Is sequentially passed over the idling roller 11, the film cutter 13 cuts the left side of the tubular film 5 in the vertical direction in the vertical direction, and is passed over the idling roller 12,
As shown in FIGS. 1 and 2, the left end of the tubular film 5 is pressed by the film pressing rollers 14 and 14, and the film guide rollers 18 and 18 in the opened state and the heat sealing devices 16 and 1 are opened.
6 is pressed by the film feed rollers 15 and 15 and is passed downward between the ironing rollers 22 and 22 in the opened state of the ironing roller device 20 and hangs downward. The lower end of the tubular film 5 is laterally sealed by the cooperation work with 25.

Further, the film cutter 13 of the tubular film 5
The vertical cut portion cut by the vertical seal is vertically sealed by the heat sealing device 16 when the tubular film 5 is intermittently fed downward in the previous work. The portion below the device 16 has a bottomed bag shape.

Further, the filling nozzle 19 is inserted between the idling roller 12 and the film pressing roller 14 into the tubular film 5 from the longitudinal cut portion of the tubular film 5, and hangs down inside the tubular film 5. And extends near the upper end of the ironing roller device 20.

When the manufacture of the filled and packaged product 28 is started, the lower end of the tubular film 5 is laterally sealed to form a bag having a bottom with the squeezing roller 22 of the squeezing roller device 20 opened. It is stopped near the horizontal seal heater block 23 and the horizontal seal base 25, and in this state, the filling object 27 is filled into the tubular film 5 from the filling nozzle 19.

When the lower end portion of the tubular film 5 is filled with a predetermined amount of the filling object 27, the heat sealing device 16 and the film guide roller 18 are driven by a driving device (not shown).
2 approaches the tubular film 5 in the thickness direction, and in FIG. 2, the left end of the tubular film 5 is nipped and the film feed roller 15 is intermittently driven.

Therefore, the tubular film 5 is intermittently fed downward by a predetermined amount while being sandwiched by the film pressing roller 14, the film feeding roller 15 and the film guide roller 18. At this time, since the heat sealing device 16 is close to the opening side of the tubular film 5 in the thickness direction of the tubular film 5, the opening of the tubular film 5 is sealed by the heat sealing device 16.

When the tubular film 5 is intermittently fed downward, the film guide roller 18 holding the tubular film 5 is rotated by the frictional force with the tubular film 5, As a result, the frictional resistance of the tubular film 5 and the extension and distortion caused by the heating of the tubular film 5 are suppressed, so that the tubular film 5 is smoothly caught in the upper end inlet portion of the heat sealing device 16 without being caught. It is sent between 16 and 16.

Further, since the squeezing rollers 22 at the front and rear of the squeezing roller device 20 are open, it does not hinder the portion of the tubular film 5 filled with the filling object 27 from passing between the squeezing rollers 22, 22. Does not occur.

When the tubular film 5 descends by a predetermined amount and the portion of the tubular film 5 filled with the filling object 27 reaches below the ironing roller 22, the lever 21 of the ironing roller device 20 rotates. The front and rear squeezing rollers 22 and 22 are closed, and the portions of the tubular film 5 not filled with the filling object 27 are squeezed and flattened in the width direction by the squeezing rollers 22 and 22.

Thus, the portion of the tubular film 5 filled with the filling object 27 reaches below the horizontal seal heater 24 and the horizontal sealing base 25, and the filling object 27 of the tubular film 5 is filled. When the squeezed and flattened portion of the upper portion located between the horizontal seal heater 24 and the horizontal seal base 25 is located, the downward feeding of the tubular film 5 is stopped.

Then, the driving device is driven to bring the horizontal seal heater block 23 and the horizontal seal base 25 close to the flattened portion of the tubular film 5, and the flat portion of the stopped tubular film 5 is heat-sealed. To form a lateral seal portion.

Further, at the same time, the horizontal seal cutting blade 26 is actuated to cut the middle portion in the height direction of the horizontal seal portion of the tubular film 5 in the horizontal direction (direction orthogonal to the paper surface), and the lower portion of the horizontal seal portion is cut. Filled and packaged product 28 formed in the previous step
Falls downward (see Figure 1).

At this time, since the upper side of the dropped packaging product 28 is sealed by the lateral sealing portion, the packaging product 28 is completely sealed, and the lower end of the tubular film 5 in the manufacturing line is , The lateral seal forms a new bottom seal for the next fill 27. In this case, the ironing rollers 22 before and after the ironing roller device 20 remain open.

In this state, when the next filling object 27 is filled in the tubular film 5 from the filling nozzle 19 and a predetermined amount of the filling object 27 is filled on the lower end side of the tubular film 5,
In the same manner as described above, the tubular film 5 having the lower part filled with the filling object 27 has the squeezing roller 22 opened,
The portion filled with the filling object 27 is sent downward to a position slightly lower than the horizontal seal heater block 23 and the horizontal seal base 25.

Next, the upper portion of the tubular film 5 above the portion filled with the filling object 27 is squeezed by the squeezing roller 22, and the squeezed portion is removed by the horizontal seal heater block 23 and the horizontal seal base 25. While being horizontally sealed, it is cut by the horizontal seal cutting blade 26, and the portion of the tubular film 5 that is filled with the filling object 27 drops downward to form a new filled and packaged product 28. The filling and packaging products 28 are sequentially manufactured by repeating the same operation as described above.

The tubular film 5 of this illustrated example is a film produced by the co-extrusion inflation method and is not stretched, so that it is soft and has a large amount of stretch and flakes.

Therefore, for example, when the tubular film 5 is applied to a filling and packaging machine having a structure in which the film guide roller 18 is removed from the filling and packaging machine as shown in FIGS. 1 to 4, one side is cut vertically. When one end of the tubular film 5 is pressed by the film pressing roller 14 and is sandwiched by the film feed roller 15 and the vertical seal portion is sandwiched by the heat seal device 16 to vertically seal and feed downward, Due to the frictional resistance of the film 5 and the extension and distortion caused by the heating of the tubular film 5, the longitudinal sealing side of the tubular film 5 is caught in the upper end inlet portion of the heat sealing device 16, so that the heat sealing device can smoothly operate. A phenomenon such as not being sent between 16 and 16 occurs.

Therefore, the coextruded tubular film 5
May not be usable in a vertical filling and packaging machine that automatically continuously fills a liquid or a viscous body.

In the illustrated example, however, the heat sealing device 1
Since the film guide roller 18 is provided on the upper part of 6 and the tubular film 5 is fed while being guided by the film guide roller 18, the longitudinally sealed side of the tubular film 5 is the upper end inlet of the heat sealing device 16. It can be fed smoothly without getting caught in the section. Therefore, the portion of the tubular film 5 to be vertically sealed can be surely vertically sealed, and thus the highly efficient filling and packaging product 2
8 can be manufactured.

That is, in this illustrated example, the tubular film 5 produced by the co-extrusion inflation method, which is excellent in flexibility and impact strength, and has a very good inner surface cleanliness.
Can be applied to a filling and packaging machine that continuously and automatically fills a filling object 27 such as a liquid or a viscous substance in a vertical type.

Since the inner surface of the coextruded tubular film 5 is extremely clean, the cleanliness of the material 27 to be filled can be kept high.

In the embodiment of the present invention, the case has been described in which the left and right sides of the tubular film 5 are vertically cut by the film cutter 13 provided in a line to form the film longitudinal cut portion. Before mounting the film roll 3 on the bobbin 2, it can be carried out by cutting the left and right sides of the tubular film 5 to form a film longitudinal cut portion, and within the range not departing from the gist of the present invention. It goes without saying that various changes can be made in.

[0079]

As described above, the first aspect of the present invention is as described above.
According to the filling and packaging machine described in 4 to 4, it is possible to continuously and efficiently produce a filled and packaged product filled with an object to be filled such as a liquid or a viscous body using the tubular film produced by the coextrusion inflation method, In addition, since the tubular film has a clean inner surface, it has an excellent effect that the cleanliness of the object to be filled can be kept high.

[Brief description of drawings]

FIG. 1 is an overall side view showing an example of an embodiment of a filling and packaging machine of the present invention.

FIG. 2 is a view taken along the line II-II in FIG.

FIG. 3 is an enlarged view of a heat sealing device on one side of the pair of heat sealing devices.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is an overall side view showing an example of a conventional filling and packaging machine.

[Explanation of symbols]

2 bobbins 3 film roll 5 tubular film 13 film cutter 14 Film pressing roller 15 Film feed roller 16 heat sealing device 18 Film guide roller 19 Filling nozzle 27 Items to be filled 28 Filled and packed products

Claims (4)

[Claims] 1. One side of the tubular film, which is fed from a film roll mounted on a bobbin so as to be intermittently fed from the upper side to the lower side in a tubular film having a laterally sealed portion near the lower end. A filling and packaging machine capable of producing a filled and packaged product by filling an object to be filled from a filling nozzle inserted from a film longitudinal direction cutting portion formed in a section, wherein the filling and packaging machine is A heat-sealing device provided to sandwich the tubular film from the thickness direction on the film longitudinal-direction cutting portion side of the tubular film so as to vertically seal the longitudinal cutting portion of the film, and to be positioned above the heat-sealing device. A film pressing roller provided to sandwich the tubular film from the thickness direction on the heat sealing device installation side of the tubular film; A film feed roller provided so as to sandwich the tubular film from the thickness direction on both right side portions, and the tubular film can be smoothly fed to the upper end portion of the heat sealing device between the opposing heat sealing devices. As described above, the filling and packaging machine is provided with a film guide roller configured to sandwich and guide the tubular film from the thickness direction. 2. The filling and packaging machine according to claim 1, wherein the tubular film is produced by a coextrusion inflation method. 3. A film cutter for forming a cut portion in a longitudinal direction of a film on a tubular film is provided at a predetermined position of a line for feeding the tubular film from above to below.
The filling and packaging machine described in. 4. The filling and packaging machine according to claim 1, wherein a film longitudinal cutting portion is formed in advance on one side of the tubular film of the film roll before being mounted on the bobbin.