JPH09254911A - Continuous manufacture of sealed package with pouring port by rolling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously heat-seal vertically superposed seal edges of a beltlike film together with a pouring port, etc., by detecting variations in the condition of drawing the beltlike film by means of a sensor, thereby controlling the drive of respective heat-sealing rolls. SOLUTION: When a projection 2, such as a pouring port, inserted between vertically superposed seal parts 1b, 1b of a beltlike film 1 is reliably received by vertically heat-sealing rolls 3, 3, variations in the condition of drawing the beltlike film 1 are detected by a method wherein, for example, light from a light-emitting element 18 is received by a light-receiving element 19 through a hole 9a bored in a gear 9, and, on the basis of a signal produced at that time, a driving servomotor 13 for rotating vertically heat-sealing rolls 3', 3' positioned in the next step is controlled. By this method, the projection 2, such as the pouring port, temporarily heat-sealed between the vertically superposed seal parts 1b, 1b of the beltlike film 1 is reliably received by recesses 3a', 3a' for receiving the projection, which are provided in the vertically heat-sealing roll 3',3' positioned in the next step, and is completely heat-sealed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous method for producing a hermetically sealed package with a spout by a roll method using a strip film.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Publication No. 63-5 has been used as a continuous manufacturing method of a sealed package with a spout using a strip film.
7289 or JP-A-6-190950.

In the former, the belt-shaped film is intermittently transferred,
When the transfer is stopped, a hole for attaching a projection such as a spout is formed in the widthwise central portion of the strip-shaped film, and a projection such as a spout with a collar is inserted into the hole to form the strip on the strip-shaped film. After welding them together, in the next step, the strip-shaped film is lengthened in the longitudinal direction so that the projections such as the spouts protrude outward.
Fold it in half, fill the contents in the band-shaped film bag body while integrally heat-sealing both side edges, and perform lateral heat sealing at required intervals to manufacture a sealed package with a spout. It was done. In the latter case, the bottom bag is made of plastic film in advance, the contents are filled in the bottom bag, and the lid with cap is fitted into the opening of the bottom bag to heat the outside. The bottom bag body and the cap lid body are integrally welded by being sandwiched by members, and a bottom bag body with a cap lid is manufactured.

[0004]

However, in the above-mentioned prior art, in the former case, since the transfer means of the strip-shaped film is intermittent transfer, the productivity is low, and the projections such as the spout are of the strip-shaped film. After being welded to the central portion in the width direction, the strip-shaped film is folded in two in the longitudinal direction and both side edges thereof are polymerized and heat-sealed, which causes a problem that the strip-shaped film transfer means becomes complicated. In the latter case,
There is a problem in that it is technically difficult to fit the cap-equipped lid to the bottom-equipped bag, and the manufacturing speed cannot be increased.

[0005]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and while vertically heat-sealing the edges of the vertically polymerized seals of the band-shaped film with a vertical heat-sealing roll, the contents in the bag-shaped film bag body In the continuous manufacturing method of the hermetically-sealed package to be a hermetically-sealed package by laterally heat-sealing at a required interval by the laterally heat-sealing roll, between the vertically superposed seal edges of the strip-shaped film transferred in the longitudinal direction. , A vertical heat-sealing roll group consisting of a pair of plural sets each having a protrusion such as a spout inserted therein, and a recess for accommodating the protrusion such as the spout is provided in a part of the heat-sealing surface facing the vertical heat-seal roll group. When heat-sealing integrally with the edge of the overlap seal, ensure that projections such as spouts are accommodated in the recesses for accommodating projections such as spouts of the vertical heat seal rolls due to the shape of the projections such as spouts. Strip film to be accommodated A change in pulling condition is detected by a sensor, a detection signal of this sensor is transmitted to a servo motor for driving each of the vertical heat seal rolls to control the drive of each of the vertical heat seal rolls, and a protrusion such as the spout. The object of the present invention is characterized in that the heat-sealing of the edge of the longitudinally overlapped seal between the object and the strip-shaped film is performed.

Further, in the continuous manufacturing method of the hermetically sealed package with the spout by the roll method, the recesses for accommodating the projections such as spouts of the vertical heat seal roll are provided from the pair of upper side vertical heat seal rolls to the lower side. By applying a vertical heat seal roll, forming the same shape or slightly smaller, it is possible to perform heat sealing of the vertical polymerization seal edge portion of the strip-shaped film and the projection such as the spout in the recess for accommodating the projection such as the spout. It is a feature.

Further, in the continuous manufacturing method of the hermetically sealed package with the spout by the roll method, the lateral heat seal roll is driven directly or indirectly by the projections such as the spout located directly above the lateral heat seal roll. It is characterized in that it is detected by a sensor, and the detection signal of this sensor is transmitted to a servo motor for driving the lateral heat sealing roll to control the driving of the lateral heat sealing roll to perform lateral heat sealing. It is a thing.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment in which a vertical heat seal roll is provided in two stages in an apparatus for carrying out a continuous method for producing a hermetically sealed package with a spout according to the present invention, and FIG. FIG. 3 is a plan view, and FIG. 3 is a perspective view showing another embodiment in which the vertical heat seal roll has three stages. 1, FIG. 2 and FIG. 3, 1 is a strip-shaped film, 2 is a heat seal by inserting the strip-shaped film 1 between the longitudinally overlapping seal edges 1b, 1b which are formed by folding the central portion 1a in the longitudinal direction. And a pair of longitudinal heats for heat-sealing the longitudinally overlapping sealing edges 1b, 1b of the strip-shaped film 1 together with the protrusion 2 such as a spout in the longitudinal direction (longitudinal direction). A seal roll is arranged so as to rotate by pressing the vertical overlapping seal edge portions 1b, 1b, and a portion for pressing the projection 2 such as the spout of the pair of vertical heat sealing rolls 3, 3. Further, the recesses 3a, 3a for accommodating protrusions such as spouts are formed in two equally divided portions on the peripheral surfaces of the pair of vertical heat seal rolls 3, 3. Recessed portion 3 for accommodating projections such as this spout
Although not shown, a and 3a are formed at one position on the circumferential surface of the vertical heat seal rolls 3 and 3 or at several equally divided points on the circumferential surface of the vertical heat seal rolls 3 and 3 in addition to the above-described embodiment. Good.
Furthermore, the vertical heat seal rolls 3 may be a pair of rotary heating disks.

The heating temperature of the pair of vertical heat seal rolls 3, 3 is set low so as to temporarily heat seal the vertical overlap seal edges 1b, 1b and the projection 2 such as a spout.
Vertical heat-sealing rolls 3 ', 3'having the same structure as described above may be arranged in the next stage so as to completely heat-seal the temporarily heat-sealed portion. Furthermore, as shown in FIG. You may arrange | position in multiple steps. Reference numerals 3a 'and 3a' denote recesses for accommodating projections such as spouts formed in portions of the circumferential surfaces of the vertical heat seal rolls 3'and 3'for sandwiching the projections 2 such as spouts. By forming the projections 2 such as spouts of the vertical heat-sealing rolls 3 and 3 on the upper stage side in the same shape as or slightly smaller than the recesses 3a, 3a, the vertical overlapping seal edge portions of the projections 2 such as spouts and the strip-shaped film 1 are formed. It is also possible to perform the heat sealing with 1b and 1b more reliably. Numerals 4 and 4 are a pair of lateral heat seals for heat-sealing the strip-shaped film bag body 1 ′, which is obtained by heat-sealing the vertical overlapping seal edge portions 1 b, 1 b and the projection 2 such as a spout, at predetermined intervals in the lateral width direction. Rolls 5 are conventionally well-known nozzles for filling the band-shaped film bag 1'with contents such as liquid, viscous substance, powder, and solid particles.

Reference numerals 6 and 6 denote rotary shafts of the vertical heat seal rolls 3 and 3, one end of which is rotatably supported by a bearing (not shown), and the other end of which is a bearing (not shown). It is rotatably supported, and gears 9, 9 are attached to and meshed with the other ends thereof, and the one rotation shaft 6 is configured to be driven by a drive servomotor 12.

Reference numerals 7 and 7 denote rotary shafts of a pair of vertical heat seal rolls of the next stage having the same structure as the vertical heat seal rolls 3 and 3. One end portion of the rotary shaft is rotatably supported by a bearing (not shown). The other ends of the rotary shafts 7, 7 are rotatably supported by bearings (not shown), and gears 10, 10 are attached and meshed with the other ends, and the one rotary shaft 7 is a drive servo. It is configured to be driven by the motor 13.

Reference numerals 8 and 8 denote rotating shafts of a pair of horizontal heat-sealing rolls 4 and 4 which heat-seal the band-shaped film bag body 1 ′ at predetermined intervals in the lateral width direction, and one end of which is rotatable by a bearing (not shown). The other ends of the rotary shafts 8 and 8 are rotatably supported by bearings (not shown), and gears 11 and 11 are attached and meshed with the other ends of the rotary shafts 8 and 8 to rotate the one side. Axis 8 is drive servo motor 1
4 is configured to be driven.

Various methods are conceivable for accommodating the protrusions 2 such as the spouts of the vertical heat seal rolls 3 and 3 in the recesses 3a, 3a for accommodating the protrusions 2 such as spouts. As shown in FIG. 3, the recesses 3a for accommodating the protrusions 2 such as spouts formed on the peripheral surfaces of the pair of vertical heat seal rolls 3,
Immediately before the 3a are joined to each other, a protrusion 2 such as a spout or the like, which has been supplied by a means 15 for supplying a spout or the like (see FIG. 3) is grasped by a robot hand or the like (not shown), The protrusions 2 may be inserted between the vertically overlapping seal edge portions 1b and 1b of the strip-shaped film 1 from above the storage recesses 3a and 3a (see FIG. 4) or from the side. Then, by controlling the driving servomotor 12, the protrusions 2 such as a spout inserted between the vertical overlapping seal edge portions 1b, 1b cause the vertical heat seal roll 3,
The rotation of the vertical heat seal rolls 3 is controlled so that the protrusions such as the spout 3 can be reliably accommodated in the accommodation recesses 3a.

As described above, the projection 2 such as a spout inserted between the vertical overlapping seal edges 1b, 1b of the strip film 1.
As a sensor for detecting a change in the pulling condition of the strip-shaped film when, for example, is reliably accommodated in the accommodating recesses 3a, 3a of the projections such as the spouts of the vertical heat seal rolls 3, 3, the gear 9 is drilled. The light from the light emitting element 18 is received by the light receiving element 19 through the hole 9a, and based on the signal obtained by the light receiving element 19, the vertical heat seal rolls 3 ', 3'of the next stage are provided.
By controlling the drive servomotor 12 for rotationally driving, the protrusion 2 such as a spout that is temporarily heat-sealed between the vertical overlapping seal edges 1b, 1b of the strip-shaped film 1 as described above, The rotation of the vertical heat seal rolls 3 ', 3'is controlled so that the protrusions such as spouts of the vertical heat seal rolls 3', 3'can be reliably accommodated in the recesses 3a ', 3a'. It has become so.

Vertically overlapped seal edge portion 1 of the strip film 1
b, 1b and the projection 2 such as a spout are heat-sealed, and a band-shaped film bag body 1'is sandwiched by a pair of lateral heat-sealing rolls 4 and 4 at a predetermined position in the lateral direction for heat sealing. Is a hole 10 formed in the gear 10, for example, as a sensor for detecting a change in the pulling condition of the strip film.
Light from the light emitting element 20 is received by the light receiving element 21 through a, and the drive servomotor 14 that rotationally drives the pair of horizontal heat seal rolls 4 and 4 is controlled based on the signal obtained by the light receiving element 21. The horizontal heat seal rolls 4 and 4 are controlled by controlling the rotation of the horizontal heat seal rolls 4 and 4.
After the band-shaped film bag body 1'is heat-sealed in the lateral width direction by the pair of horizontal heat-sealing rolls 4 and 4 as described above, the contents such as liquid, viscous substance, powder and solid particles are discharged from the nozzle 5 into the band-shaped film. The bag 1'is filled.

As described above, the contents filled in the band-shaped film bag 1 ', the contents filled in the band-shaped film bag 1'after the band-shaped film bag 1'has been moved downward by a required amount. The strip-shaped film bag 1'above is horizontally heat-sealed by the horizontal heat-sealing rolls 4 and 4. In addition, 16 and 16 shown in FIG. 3 are cooling rolls for cooling the portions which are laterally heat-sealed by the lateral heat-sealing rolls 4 and 4. Then, when the transversely heat-sealed portion cooled by the cooling rolls 16 and 16 is cut by a cutter (not shown) provided in the next stage in the transfer direction, as shown in FIG. Come through.

As shown in FIG. 5, the heat-sealed portion 2a between the vertically overlapping sealing edges 1b, 1b of the strip-shaped film 1 is an ellipse, and a cap 2b is formed at the tip of a hollow protrusion formed at the center thereof. When the protrusion 2 such as the spout is heat-sealed between the vertical overlapping seal edge portions 1b, 1b, a sealed package W with a spout as shown in FIG. 6 is manufactured. Further, as shown in FIG. 7, a protrusion 2 such as a spout having a hollow notch 2c having a closed end formed with a notch 2c that can be cut off.
Is heat-sealed between the vertical overlapping seal edges 1b, 1b to produce a sealed package W with a spout as shown in FIG. Further, as shown in FIG. 9, when a protrusion 2 such as a spout having a cap 2d at the tip of a hollow protrusion is heat-sealed between the vertical overlapping seal edge portions 1b, 1b, as shown in FIG. A sealed package W with a spout is manufactured.

In the above embodiment, the projection 2 such as the spout is provided with the accommodating recess 3 of the vertical heat seal rolls 3, 3.
a and 3a, the hole 9a bored in the gear 9 and a light emitting element 18 arranged so that light passes through the hole 9a as a sensor for detecting a change in the pulling condition of the strip film. And the light receiving element 19, the light from the light emitting element 18 is received by the light receiving element 19 and the light receiving element 19 receives the light when the protrusion 2 such as the spout is reliably accommodated in the accommodation recesses 3a, 3a. Although the storage state of the projection 2 such as the spout is indirectly detected so that a signal can be obtained, as another embodiment not shown, the storage recesses 3a, 3a are provided.
When the projection 2 such as the spout is securely housed in the housing, the projection 2 such as the spout is exposed to light to directly receive the housing recess 3 of the projection 2 such as the spout.
It is also possible to detect the storage state in a, 3a. Further, in the above-described embodiment, the rotation of the vertical heat seal roll or the horizontal heat seal roll is controlled by using the drive servo motor, but the vertical heat seal roll or the vertical heat seal roll is controlled by mechanical means other than the drive servo motor. It is also possible to control the rotation of the horizontal heat seal roll so as to obtain an equivalent effect.

[0019]

EFFECTS OF THE INVENTION According to the present invention, the vertical polymerization sealing edge portion of the strip-shaped film is longitudinally heat-sealed by the vertical heat-sealing roll, while the contents are filled in the strip-shaped film bag body and the horizontal heat-sealing roll is used. In a continuous manufacturing method of a hermetically-sealed package to be a hermetically-sealed package by applying a horizontal heat seal at intervals, between the vertically superposed seal edges of the strip-shaped film transferred in the longitudinal direction,
By inserting a protrusion such as a spout, and a vertical heat seal roll group consisting of a pair of plural pairs each having a recess for accommodating the protrusion in a part of the heat sealing surface facing the When integrally heat-sealing, a sensor detects a change in the pulling condition of the strip-shaped film so that the protrusions can be reliably accommodated in the protrusion-accommodating recesses of the respective vertical heat-sealing rolls due to the shape of the protrusions. , A detection signal of this sensor is transmitted to a servo motor for driving each of the vertical heat seal rolls to control the drive of each of the vertical heat seal rolls, and the heat seal at the edge of the vertically overlapped seal of the protrusion and the strip film. In addition, the recesses for accommodating protrusions such as each spout of the vertical heat seal roll in the continuous manufacturing method of the hermetically sealed package with the spout by the roll method, the pair of upper side vertical heat seal rolls From Toward the longitudinal heat seal rolls stage,
Formed in the same shape or slightly smaller, and heat-sealing the vertical polymerized sealing edge of the strip-shaped film in the accommodating recess of the protrusion with the protrusion, and further continuously manufacturing a sealed package with a spout by a roll method. Driving the horizontal heat seal roll in the method, directly or indirectly detects a protrusion such as a spout located directly above the horizontal heat seal roll by a sensor, the detection signal of this sensor of the horizontal heat seal roll Since the horizontal heat sealing roll is controlled by transmitting it to the driving servomotor to control the lateral heat sealing roll, the belt-shaped film is continuously transferred in the longitudinal direction while its longitudinal polymerization is performed. Insert a protrusion such as a spout between the seal edges, heat seal it integrally with the vertical polymerization seal edge, and fill the strip-shaped film bag with contents, and Heat-sealing is applied in the width direction of the band-shaped film bag between the heat-sealed protrusions and the protrusions, and a sealed package with a spout can be easily obtained. The heat-sealing roll is provided with a recess for accommodating projections such as spouts, and accommodates projections such as spouts inserted between the longitudinally overlapped seal edges of the strip-shaped film to form a vertically superposed seal edge of the strip-shaped film. Since they are integrally heat-sealed, protrusions such as spouts can be easily inserted between the edges of the vertically overlapping seals of the band-shaped film and heat-sealing can be performed. By making the recess for accommodating protrusions such as spouts the same shape or slightly smaller as it moves to the vertical heat seal roll on the lower stage side, heat sealing between the strip-shaped film and protrusions such as spouts can be made more reliable. Can be done In addition to the above, the vertical heat seal roll and the horizontal heat seal roll were driven and controlled by the drive servo motor, so that accurate heat seal was achieved in response to changes in the shape of protrusions such as spouts. It is possible to perform, especially when driving the horizontal heat seal roll, by detecting the center of the recess of the protrusion of the vertical heat seal roll in the final stage by a sensor,
Since it is performed based on the detection signal of this sensor, it has various excellent effects such as more reliable lateral heat sealing.

[Brief description of drawings]

FIG. 1 is a perspective view of an apparatus for explaining a continuous method for producing a hermetically sealed package with a spout according to the roll method of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a perspective view of another embodiment of the apparatus for explaining the continuous manufacturing method of the hermetically sealed package with the spout according to the roll method of the present invention.

FIG. 4 is a perspective view of a vertical heat-sealing roll portion at the uppermost stage of the apparatus for explaining the continuous method for producing a hermetically sealed package with a spout according to the roll method of the present invention.

FIG. 5 is a diagram showing an embodiment of a protrusion such as a spout.

FIG. 6 is a view showing a hermetically sealed package manufactured using a projection such as a spout according to an embodiment.

FIG. 7 is a diagram showing another embodiment of a protrusion such as a spout.

FIG. 8 is a view showing a hermetically sealed package manufactured by using a protrusion such as a spout according to another embodiment.

FIG. 9 is a view showing still another embodiment of a protrusion such as a spout.

FIG. 10 is a view showing a hermetically sealed package manufactured by using a protrusion such as a spout according to still another embodiment.

[Explanation of symbols]

 1 band-shaped film 1 'band-shaped film bag body 1a central part 1b vertical overlap sealing edge 2 protrusions such as spout 2a heat-sealed portion 2b cap 2c cut 3 vertical heat-sealing roll 3' vertical heat-sealing roll 3a accommodating recess 3a ′ Housing recess 4 Horizontal heat seal roll 5 Nozzle 6 Rotating shaft 7 Rotating shaft 8 Rotating shaft 9 Gear 9a hole 10 Gear 10a hole 11 Gear 12 Drive servomotor 13 Drive servomotor 14 Drive servomotor 15 Protrusions such as pouring outlets Supplying means 16 Cooling roll 17 Chute 18 Light emitting element 19 Light receiving element 20 Light emitting element 21 Light receiving element

Claims (3)

[Claims] 1. A vertical film heat-sealing roll is used to vertically heat-seal a vertical film-sealing edge of a strip-shaped film while filling the contents in a bag-shaped film bag, and a horizontal heat-sealing roll is used to transversely heat-seal at predetermined intervals. In the continuous manufacturing method of the hermetically-sealed package to be a hermetically-sealed package, a protrusion such as a spout is inserted between the vertically overlapping seal edges of the strip-shaped film to be transferred in the longitudinal direction, and the opposing heat-sealing surface When heat-sealing integrally with the vertical superposition seal edge portion by a group of vertical heat-sealing rolls each having a recess for accommodating protrusions such as the spout, etc. The sensor detects the change in the pulling condition of the strip-shaped film so that the protrusions such as the spout of the vertical heat seal roll due to the shape of the protrusion can be reliably accommodated in the recesses of the spout. The detection signal of this sensor No. is transmitted to the servomotor for driving each vertical heat seal roll to control the drive of each vertical heat seal roll, and the heat sealing of the protrusions such as the spout and the vertical overlapping seal edge portion of the strip-shaped film is performed. A method for continuously producing a hermetically sealed package with a spout by a roll method, which is characterized in that it is carried out. 2. A vertical heat seal on each of the pair of upper stages of the vertical heat seal for accommodating recesses for protrusions such as spouts of the vertical heat seal roll in the continuous manufacturing method of a hermetically sealed package with a spout according to claim 1. From the roll to the vertical heat sealing roll on the lower stage side, the same shape or slightly smaller is formed, and heat sealing of the vertical overlapping seal edge of the strip-shaped film in the recess for accommodating the protrusion such as the spout and the protrusion such as the spout is performed. A method for continuously manufacturing a hermetically sealed package with a spout by a roll method, which is characterized in that. 3. The horizontal heat seal roll is driven in the continuous manufacturing method of a hermetically sealed package with a spout according to claim 1 or 2, wherein the spout is located directly above the horizontal heat seal roll. Directly or indirectly with a sensor, the detection signal of this sensor is transmitted to the drive motor of the horizontal heat seal roll to control the drive of the horizontal heat seal roll, and the heat seal in the horizontal direction is controlled. A method for continuously producing a hermetically sealed package with a spout by a roll method, which is characterized in that it is carried out.