JP6125239B2 - Manufacturing method of sealed bag - Google Patents

Description

  The present invention forms a film continuously fed from a raw roll into a cylindrical shape, fills the contents therein, and heat seals at regular intervals so as to be orthogonal to the longitudinal direction, and then the heat seal portion It is related with the manufacturing method of a sealing bag for isolate | separating by and manufacturing an individual sealing bag.

  Conventionally, a sealing bag manufacturing method for manufacturing a sealed bag filled with contents by processing a film continuously fed from a raw fabric roll includes a guide process, a bi-fold process, a side seal process, a filling process, and a horizontal seal. A process, a separation process, etc. are provided. A guide process guides the film continuously sent out from the original fabric roll downward. In the double folding step, the film sent downward is folded in half at the center in the width direction. In the side sealing step, the side end portions of the folded film are overlapped and heat sealed. In the filling step, the contents are filled into a cylindrical film body formed into a cylindrical shape after heat-sealing the side end portions of the film.

  In the horizontal sealing step, the cylindrical film body filled with the contents is conveyed between a pair of horizontal sealing rollers each having a protruding portion on the circumference, and the two rollers are rotated so that the protruding portions of the two are in contact with each other. The cylindrical film body is sandwiched in contact, and heat-sealed at intervals (intermittently) so as to cross the longitudinal direction of the cylindrical film body. The separation process is heat-sealed in the horizontal sealing process, so that the tubular film body filled with the contents is separated as a series of sealing bags, and then sealed at the location where heat sealing is performed in the horizontal sealing process. This is for separating the bags individually (for example, Patent Document 1).

JP 2012-51579 A

  In such a sealing bag manufacturing method, if the time for which the horizontal sealing roller sandwiches the tubular film body is insufficient, the heat sealing becomes incomplete, resulting in product defects such as leakage of contents. It is necessary to sandwich the tubular film body. For this reason, the rotational speed of the horizontal sealing roller cannot be increased beyond a certain speed. Since the cylindrical film body is continuously conveyed, there is a problem that the rotational speed of the horizontal sealing roller becomes a bottleneck and the production efficiency of the sealing bag cannot be increased.

  Therefore, an object of the present invention is to provide a method for manufacturing a sealed bag with high production efficiency.

Therefore a first aspect of the present invention, a guide step of guiding the film issued Ri feed bulk roll or et downward,
Folding step of folding the film sent in the downward direction into two in the width direction;
A side sealing step in which heat sealing is performed while a pair of side seal rollers rotate between the side end portions of the film folded in two;
A filling step of filling the contents into a cylindrical film body in which the film is formed into a cylindrical shape;
A transverse sealing step of intermittently heat-sealing the tubular film body filled with the contents intermittently on the same plane as the heat-sealing of the side end portion of the tubular film body so as to cross the longitudinal direction. When,
In more transverse seals Engineering, after said contents are filled tubular film body is separated as a series of sealed bag, the lateral sealing process disconnecting individually the sealed bag in a place where it has been heat sealed at the separating In a manufacturing method of a sealed bag comprising a step ,
Before the Kiyoko sealing step, the pair of lateral seal rollers rotate, the cylindrical protrusion each other continuously provided the pair of lateral seal rollers along the width direction on each surface is intermittently brought into contact with the film Heat seal across the body ,
Between the projecting portions to each other before Kiyoko seal roller is in contact,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller;
While controlling the circumferential speed of the horizontal sealing roller to be the second speed,
While the protrusions of the horizontal seal roller do not contact each other,
While maintaining the circumferential speed of the horizontal sealing roller at the second speed,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller
The and controls so that the faster first speed than each of the second speed.

The invention according to claim 2, a film from the two original fabric roll issued their respective feed Ri downward, and the two guide steps two films is induced to face,
A side seal step of heat-sealing while rotating two pairs of side seal rollers one by one on both side ends of the two films sent to face each other in the downward direction;
A filling step of filling the contents into a cylindrical film body in which the two films are cylindrical ;
A transverse sealing step of intermittently heat-sealing the tubular film body filled with the contents intermittently on the same plane as the heat-sealing of both ends of the tubular film body so as to cross the longitudinal direction. ,
In more transverse seals Engineering, after said contents are filled tubular film body is separated as a series of sealed bag, the lateral sealing process disconnecting individually the sealed bag in a place where it has been heat sealed at the separating In a manufacturing method of a sealed bag comprising a step ,
Before the Kiyoko sealing step, the pair of lateral seal rollers rotate, the cylindrical protrusion each other continuously provided the pair of lateral seal rollers along the width direction on each surface is intermittently brought into contact with the film Heat seal across the body ,
Between the projecting portions to each other before Kiyoko seal roller is in contact,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller;
While controlling the circumferential speed of the horizontal sealing roller to be the second speed,
While the protrusions of the horizontal seal roller do not contact each other,
While maintaining the circumferential speed of the horizontal sealing roller at the second speed,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller
The and controls so that the faster first speed than each of the second speed.

According to the invention of claim 1, a guide step of guiding the film issued Ri feed bulk roll or et downward, folio step of the two-fold the sent under the direction the film in the width direction And a side sealing step in which a pair of side seal rollers rotate while side edges of the folded film are heat-sealed, and the contents are placed inside a cylindrical film body in which the film is formed in a cylindrical shape. The filling step of filling, and the tubular film body filled with the contents, intermittently so as to cross the longitudinal direction and on the same plane as the heat seal at the side end of the tubular film body a lateral sealing process is heat sealing, at higher transverse seal Engineering, after the contents are filled tubular film body is separated as a series of sealed bags, said at a place where it has been heat sealed by the transverse sealing step Sealed bag And a separating step to separate individually.

Then, before the Kiyoko sealing step, the pair of lateral seal rollers rotate, the cylindrical protrusion each other continuously provided the pair of lateral seal rollers along the width direction on each surface is intermittently brought into contact with Heat-sealed with a film-like film sandwiched between them.

Additionally, while the protrusions each other before Kiyoko seal roller abuts, the delivery speed of the film fed from the sheet roll, the circumferential speed of the side seal roller, the circumferential speed of the transverse sealing roller Are controlled at the second speed, while the circumferential speed of the horizontal seal roller is maintained at the second speed while the protrusions of the horizontal seal roller are not in contact with each other. The feeding speed of the film fed from the counter roll and the circumferential speed of the side seal roller are controlled to be a first speed higher than the second speed , respectively .

  Therefore, it is possible to provide a method for manufacturing a sealed bag with high production efficiency while ensuring a sufficient time for the upper and lower sealing rollers to sandwich the cylindrical film body.

According to the invention described in claim 2, a film from the two original fabric roll issued their respective feed Ri downward, and the two guide steps two films is induced to face, the lower A side sealing step in which two sets of side seal rollers rotate and heat-seal the opposite ends of two films that are fed so as to face each other in a direction, and a cylinder in which the two films are cylindrical The filling step of filling the inside of the cylindrical film body, and the same as the heat sealing at both ends of the cylindrical film body so as to cross the cylindrical film body filled with the contents in the longitudinal direction at the plane, and the lateral sealing process for intermittently heat-sealed at about transverse seal Engineering, after the contents are filled tubular film body is separated as a series of sealed bags, the transverse sealing step Heat And a separating step to separate individually the sealed bag Le has been places.

Then, before the Kiyoko sealing step, the pair of lateral seal rollers rotate, the cylindrical protrusion each other continuously provided the pair of lateral seal rollers along the width direction on each surface is intermittently brought into contact with Heat-sealed with a film-like film sandwiched between them.

Additionally, while the protrusions each other before Kiyoko seal roller abuts, the delivery speed of the film fed from the sheet roll, the circumferential speed of the side seal roller, the circumferential speed of the transverse sealing roller Are controlled at the second speed, while the circumferential speed of the horizontal seal roller is maintained at the second speed while the protrusions of the horizontal seal roller are not in contact with each other. The feeding speed of the film fed from the counter roll and the circumferential speed of the side seal roller are controlled to be a first speed higher than the second speed , respectively .

  Therefore, it is possible to provide a method for manufacturing a sealed bag with high production efficiency while ensuring a sufficient time for the upper and lower sealing rollers to sandwich the cylindrical film body.

It is a general | schematic general view of the manufacturing apparatus used for an example of the manufacturing method of the sealing bag of this invention. It is a principal part side view of FIG. FIG. 3 is a front view as viewed in the direction of arrow A in FIG. 2, (a) is a diagram illustrating a state of a film between a guide bar and a side seal portion, and (b) is a cylinder between a side seal portion and a lateral seal roller. It is a figure which shows the state of a film-like film body. (A) is an enlarged side view for explaining a state in which the cylindrical film body is heat-sealed by the horizontal sealing roller, and (b) is a front view of a series of sealed bags formed by heat-sealing by the horizontal sealing roller. It is. BRIEF DESCRIPTION OF THE DRAWINGS (a) is a whole perspective view for demonstrating the structure of a horizontal seal roller, (b) is a B arrow side view of (a). (A) is a control block diagram of the main part, (b) is a side view showing the state of the side roller and the servo motor and AA sectional view, (c) is a side view showing the state of the lateral seal roller and the servo motor, AA sectional drawing, (d) is a side view which shows the state of an unwinding roller and a servomotor. It is a timing chart of the rotation angle (horizontal axis) of the horizontal seal roller and the circumferential speed (vertical axis) of the side seal roller and the fabric roll. (A) is a perspective view of the sealing bag manufactured with the manufacturing apparatus used for the manufacturing method of the sealing bag of this example, (b) is K arrow sectional drawing of (a). (A) of a modification of a sealing bag is a perspective view, (b) is L sectional drawing of (a). It is a principal part side view of the manufacturing apparatus used for 2nd Example of the manufacturing method of the sealing bag of this invention. It is a principal part side view of the manufacturing apparatus used for 3rd Example of the manufacturing method of the sealing bag of this invention. It is a principal part side view of the manufacturing apparatus used for 4th Example of the manufacturing method of the sealing bag of this invention.

Examples of the present invention will be described below with reference to FIGS. First, the operation of the manufacturing apparatus 10 will be described. The original fabric roll R is wound around the unwinding roller RA, and the unwinding roller RA is rotatably attached by the servo motor R1. The film FL unwound from the original fabric roll R enters the sterilization region 7 through the opening 3 to which the shutter 2 is attached. Here, the film FL is first dipped in a sterilization liquid tank (sterilization part) 4 in which a sterilization liquid is stored and sterilized, and then hot air is blown from both sides to a hot air nozzle (drying part) 5 to dry the film FL. Is done. In order to cool the film FL whose temperature has risen, cold air is blown onto both surfaces from the cold air nozzle (cooling unit) 6 following the hot air nozzle 5 to cool the film FL. A cylindrical film body TU is formed through the guide roller 11, the guide bar 12, and the side seal portion 20, and a series of sealed bags PD1 are formed through the lateral seal portion 40 while being filled with the contents from the filling nozzle 30. . And it becomes a product as sealing bag PD2 cut in heat seal part THS (refer to Drawing 4 (b)) with cutter 60, and separated individually. Reference numeral 8 denotes a non-sterile region. The filling nozzle 30 is connected to a tank (not shown) in which contents are stored.

  The film FL of this example has heat sealing properties, and has a polyethylene layer or a polypropylene layer as the innermost layer and a polyester layer or a polyamide layer formed as the outermost layer. Further, a polyester layer, a polyamide layer, a polyethylene layer, an aluminum foil layer, or the like may be laminated between the innermost layer and the outermost layer.

  Further, the contents of this example are fluid and suitable for foods, detergents, pharmaceuticals, and the like. For example, soft cream ingredients, tomato sauce, tomato paste, mayonnaise, cooked curry and stew, laundry detergent, shampoo, rinse, pharmaceuticals and the like. However, the contents are not limited to this.

  The guide roller 11 is a driven roller for guiding the film FL unwound from the raw roll R and transported in the vertical direction (downward) in the guide process. The guide bar 12 is for folding the film FL fed out from the guide roller 11 in the vertical direction (downward) into two at the center in the width direction (two-folding process). In this figure, the guide bar 12 is pressed from the front side of the film FL (front side of the figure), the film FL is folded in half, and both side ends of the film FL are positioned upright toward the front side of the figure. Yes.

  The side seal portion 20 is for heat-sealing by overlapping only both side end portions T1 and T1 (FIG. 3A) of the film FL1 which is folded in two (side seal step). The filling nozzle 30 is for filling the fluid content CT into the inside of the tubular film body TU formed into a tubular shape after heat-sealing SH2 at both end portions T1 and T1 in the filling step. Yes (FIG. 3B). Reference numeral 30E indicates the lower end of the filling nozzle 30. A supply tank is connected to the base end side of the filling nozzle 30 via a pump (not shown). In FIG. 2, the filling nozzle 30 is disposed from the front to the back of the drawing, is disposed between the films FL1 and FL1, and is bent downward in the figure at the lower end 30E near the approximate center in the width direction of the film FL1. It is arranged to be.

  The horizontal seal portion 40 has a constant interval D in the direction perpendicular to the longitudinal direction E (FIG. 4 (a), (b)) (so as to cross the longitudinal direction E) the cylindrical film body TU filled with the contents CT. (Intermittently) for heat sealing THS (lateral sealing process). Further, the heat seal THS may not necessarily be formed in a direction perpendicular to the longitudinal direction E of the tubular film body TU.

  The cutter 60 is heat-sealed THS at the horizontal seal portion 40, so that the tubular film body TU filled with the contents is separated as a series of sealed bags PD1, and then the heat seal THS at the horizontal seal portion 40. This is for separating the series of sealed bags PD1 individually at the locations where they have been cut (cutting step). Note that the series of sealed bags PD1 are separated by the cutter 60 and become products as individual sealed bags PD2.

The side seal part 20 includes a pair of side seal rollers 21 and 21. As shown in FIG. 6B, these side seal rollers 21 and 21 are attached by meshing with each other by gears 21a and 21a, and one gear 21a meshes with a gear 22a disposed on the output shaft of the servo motor 22. ing. A pair of side seals rollers 21 and 21 is synchronized Rotation in the opposite direction at the same rotational speed by rotating the servo motor 22 is subjected to a heat seal SHS while sandwiching the side edge T1 of the film FL1. The roll width of the side seal roller 21 may be as long as the side end portion T1 of the film FL1 can be heat-sealed SHS, and is configured not to be heat-sealed except for the side end portion T1 of the film FL1.

On the other hand, the horizontal seal portion 40 includes a pair of horizontal seal rollers 41 and 41. As shown in FIGS. 5 (a) and 5 (b), the respective surfaces of the horizontal seal rollers 41 and 41 are provided along the width direction W. The protrusion 41P is continuously provided. Two protrusions 41P are provided on the circumferential surface of each horizontal seal roller 41. Further, the two protruding portions 41P are provided at a position 180 degrees away from the rotation center 41C of the horizontal sealing roller 41. A pair of lateral seal rollers 41 and 41 as shown in FIG. 6 (c), the gear 41a, mounted mesh with one another by 41a, and a gear 42a disposed on the output shaft of the servo motor 42 on one of the gear 41a I'm engaged. By rotating the servo motor 42, the pair of horizontal sealing rollers 41, 41 are synchronously rotated in the reverse direction at the same rotational speed.

  Therefore, every time the pair of horizontal seal rollers 41, 41 rotate approximately half a turn, the protruding portions 41P of both the horizontal seal rollers 41, 41 come into contact with each other (that is, the protruding portions come in contact with each other intermittently) to form a cylindrical shape. Heat seal THS is applied across the film body TU. At least the surface layer of the projecting portion 41P is formed of a metal material having high thermal conductivity, and is heated with heat from a heat generating device provided separately. Note that the number of protrusions 41P is not limited to two on the peripheral surface of the horizontal seal roller 41.

  In addition, a pair of adjustment rollers 50 and 50 are provided between the lower end 30 </ b> E of the filling nozzle 30 and the horizontal seal rollers 41 and 41. The adjustment rollers 50 and 50 are arranged on both sides with the cylindrical film body TU interposed therebetween. When the interval between the adjustment rollers 50 and 50 is reduced, the filling amount of the contents in the cylindrical film body TU can be reduced, and the adjustment rollers 50 and 50 can be adjusted. When the distance between the rollers 50 is increased, the filling amount of the contents in the tubular film TU can be increased.

  That is, the filling amount of the contents can be adjusted without increasing or decreasing the conveyance speed of the tubular film body TU, and different products can be manufactured with one manufacturing apparatus. The adjusting rollers 50 and 50 may adjust the interval depending on the viscosity of the contents. In other words, when the content is highly viscous, the interval between the adjustment rollers 50 and 50 is widened so that the content can easily pass through. When the content is low, the interval between the adjustment rollers 50 and 50 is decreased and the content is reduced. By making it difficult to pass, the filling amount of the contents can be adjusted without increasing or decreasing the transport speed of the tubular film body TU. The adjusting rollers 50 and 50 are driven to rotate.

  As shown in the control block diagram of FIG. 6A, in the sealed bag manufacturing apparatus 10, the side seal rollers 21 and 21, the side seal rollers 41 and 41, the servo motor 22 that rotates the unwind roller RA, and the servo motor 42. A control unit 70 for controlling the servo motor R1 is arranged. Each of the servo motors 22, 42, R1 includes encoders 22c, 42c, Rc, and servo amplifiers 22b, 42b, Rb are connected thereto. The rotational position information of each servo motor 22, 42, R1 can be obtained by the encoders 22c, 42c, Rc, and the contact start timing and contact end timing of the protruding portions 41P, 41P of the lateral seal rollers 41, 41 are recognized. be able to. Each servo amplifier 22b, 42b, Rb receives a signal from the control unit 70 and gives a command to each servo motor 22, 42, R1, and the rotational position of each servo motor 22, 42, R1 from the encoder 22c, 42c, Rc. In response to the signal, each servomotor 22, 42, R1 is controlled so as to have a speed commanded by the controller 70.

FIG. 7 shows a timing chart of the rotation angle (horizontal axis) of the horizontal seal rollers 41 and 41 and the circumferential speed (vertical axis) of the side seal rollers 21 and 21 and the original fabric roll R. Since the diameter of the original roll R is reduced by feeding the film FL, the circumferential speed cannot be made constant if the servo motor R1 is rotated at a constant rotational speed. Therefore, it is necessary to detect the feed length of the film FL, calculate the diameter of the raw roll R according to the length, and control the rotation speed of the servo motor R1 so that the circumferential speed is always constant. is there.

In FIG. 7, one circumferential speed cycle is formed every time the horizontal seal rollers 41, 41 rotate 180 degrees. The angle of rotation of the lateral seal rollers 41, 41 required from the start of contact of the protrusions 41P, 41P to the end of contact is defined as B degrees, and the circumferential speed of the side seal rollers 21, 21 and the circle of the original roll R during this time peripheral speed control section 70 to the (original feeding speed of the film delivered from the film roll) and V2 (second velocity) controls. During this time, the lateral sealing rollers 41 and 41 are synchronized with the side sealing rollers 21 and 21 and the original roll R, and the circumferential speed thereof is V2.

On the other hand, the rotation angle of the horizontal seal rollers 41, 41 required from the end of the contact of the protrusions 41P, 41P to the start of the next contact (that is, while the protrusions of the horizontal seal roller do not contact each other) is C degrees. During this period of the side seal rollers 21 and 21 and control section 70 to the circumferential speed of the master roll R and V1 (first speed) is controlled (V1> V2). During this time, the circumferential speed of the horizontal sealing rollers 41 and 41 remains V2. In this way, the circumferential velocity V2 of the lateral sealing rollers 41 and 41 while retaining intact, to the side seals rollers 21 and 21 and bulk roll R can be faster than the circumferential speed V2, the horizontal When the protrusions 41P and 41P of the seal rollers 41 and 41 are not in contact with each other, a gap is formed between the peripheral surfaces of the horizontal seal rollers 41 and 41, and the peripheral surfaces of the horizontal seal rollers 41 and 41 are not touched in the gaps. This is because the cylindrical film body TU can be conveyed at the speed V1.
The circumferential speed of the horizontal seal rollers 41 and 41 is set to V2 while the protrusions 41P and 41P are in contact, and V1 ′ (from the end of contact of the protrusions 41P and 41P to the start of the next contact. V1 ′> V2) may be controlled.

Since the servo motor 22, servo motor 42, and servo motor R1 require time for acceleration / deceleration, the circumferential speed of the side seal rollers 21, 21 and the raw roll R is V1 when the angle A (A> B ).

Thus, the projecting portion 41P horizontal sealing rollers 41 and 41, while to what 41P does not abut, the circumferential speed of the side seal rollers 21 and 21 and bulk roll R that accelerate the V1, the film F L, the film The conveyance speed of FL1, cylindrical film body TU, and a series of sealed bags PD1 can be increased, and the production efficiency of the sealed bag manufacturing apparatus 10 can be increased.

  8A and 8B show the sealed bag PD2 manufactured in this way. The sealing bag PD2 includes a heat seal SHS at one end and a heat seal THS at the upper and lower ends. The contents CT are provided inside.

  Further, as shown in FIGS. 9A and 9B, the sealing bag PD2 may be configured to apply heat seal SHS to the folded portion BN at the center of the film FL, and may be a sealing bag PD2 ′. The heat seal SHS applied to the folded portion BN is formed by disposing an apparatus having the same configuration as that of the side seal portion 20.

  A second embodiment of the present invention is shown in FIG. In addition, about the part which is common in the said 1st Example of this 2nd Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted. Unlike the sealed bag manufacturing apparatus 10, the sealed bag manufacturing apparatus 110 supplies films FL ′ and FL ′ from two raw rolls (not shown). Therefore, the guide bar (bi-folded portion) 12 is not required. Further, the side seal portion 120 has a different configuration because the two side ends of the two films FL ′ and FL ′ are bonded together. In addition, two guide rollers 111 and 111 for guiding the two films FL ′ and FL ′ are arranged instead of the guide roller 11. Other configurations are the same as those in the example of FIG.

The sealing bag manufacturing apparatus 110 is configured to supply films FL ′ and FL ′ from the left and right in the drawing. Also, the supply direction of the films FL ′ and FL ′ is different from the example of FIG. 2, and the films are supplied so that the vertical direction is the thickness direction of the films FL ′ and FL ′. Therefore, the center of rotation of the guide rollers 111 and 111 is also in the vertical direction in the drawing. Further, in this example, two film FL', to form a tight seal bag PD2' by bonding both side ends of FL' at the side seal portions 120, each film FL', width FL' is Figure It is about half that of the second film FL.

  The side seal part 120 overlaps two films FL ′ and FL ′ and overlaps both end portions thereof to heat seal. Accordingly, a pair of side seal rollers 121 and 121 and side seal rollers 121a and 121a are provided on the left and right sides of the two superimposed films FL ′ and FL ′, respectively. Similarly to the first embodiment, the side seal rollers 121 and 121 and the side seal rollers 121a and 121a are configured to rotate in synchronization with each other via a gear and a servo motor (not shown), and the films FL 'and FL' Heat seal while sandwiching both ends.

  Also in the configuration of the second embodiment, the circumferential speed of the side seal rollers 121, 121 and the side seal rollers 121a, 121a and the circle of the original roll are maintained while the projecting portions 41P, 41P of the horizontal seal rollers 41, 41 abut. The circumferential speed, that is, the feeding speed of the films FL ′ and FL ′ and the circumferential speed of the horizontal sealing rollers 41 and 41 are controlled to V2, respectively, and from the end of contact of the protrusions 41P and 41P to the start of the next contact. Controls the circumferential speed of the side seal rollers 121 and 121 and the side seal rollers 121a and 121a and the feeding speed of the films FL ′ and FL ′ to V1 (V1> V2), thereby achieving the same operation as the first embodiment. And you can get the effect.

A third embodiment of the present invention is shown in FIG. In the sealed bag manufacturing apparatus 210 of this example, instead of the horizontal seal rollers 41 and 41 of the first embodiment, a horizontal seal portion 240 provided with horizontal seal means 241 and 241 by box motion is arranged. Other configurations and operations are the same as those in the first embodiment. The horizontal seal portion 240 includes horizontal seal means 241 and 241 facing each other, and a protruding portion 241P is provided on the facing surface of each horizontal seal means 241. Each of the horizontal sealing means 241 and 241 includes an air cylinder and a servo motor (not shown), and is configured to linearly move left and right in the drawing by the air cylinder and to move up and down by the servo motor. In the initial position, the horizontal sealing means 241 and 241 are arranged so that both the protruding portions 241P and 241P come into contact with each other, and the protruding portions 241P and 241P of the two horizontal sealing means 241 and 241 are used to adjust the width of the tubular film TU. subjected to heat-sealing THS (see FIG. 4 (b)) sandwiched direction. In this state, after moving in the conveying direction of the tubular film body TU for a certain period of time, the lateral sealing means 241 moves left and right away from the tubular film body TU and then moves upward, and then returns to the initial position described above. .

  Also in the configuration of the third embodiment, while the projecting portions 241P and 241P of the lateral seal means 241 and 241 are in contact with each other, the circumferential speed of the side seal rollers 21 and 21, the delivery speed of the film FL, and the lateral seal means 241 and 241 are provided. And the circumferential speed of the side seal rollers 21 and 21 and the delivery speed of the film FL are set to V1 (from the end of contact of the protrusions 241P and 241P to the start of the next contact, respectively. By controlling V1> V2), it is possible to obtain the same operations and effects as those of the first and second embodiments.

A fourth embodiment of the present invention is shown in FIG. The sealed bag manufacturing apparatus 310 shown in FIG. 12 has a configuration in which a horizontal seal portion 240 including box motion type horizontal seal means 241 and 241 is disposed in place of the horizontal seal rollers 41 and 41 of the second embodiment. Other configurations and operations are the same as those of the second embodiment shown in FIG. The horizontal sealing unit 240 are the same as those described in the third embodiment of FIG 1.

In addition to all the above-described examples, the manufacturing method of the sealed bag of the present invention can also be manufactured by a back-sticking seal. In the manufacturing method of the back-sealed seal type sealing bag, the film continuously fed from the raw roll is rounded in the width direction into a cylindrical shape, and the bag making guide step is performed to match the inner sides of both sides of the film. A vertical sealing process in which both sides of the film are heat sealed to form the film into a cylindrical tubular film body, and a tilting in which the vertically sealed vertical seal portion is brought down to either side and close to the side surface of the cylindrical film body A process, a filling process for filling the contents inside the tubular film body, and a horizontal sealing process for intermittently heat-sealing the tubular film body filled with the contents so as to be orthogonal to the longitudinal direction. Prepare. In this horizontal sealing step, the horizontal seal is also applied together with the vertical seal portion that has been tilted in the tilting step.

  Furthermore, after the cylindrical film body filled with the contents is separated as a series of sealed bags by heat sealing in the horizontal sealing process, the sealing bags are individually separated at the places where heat sealing is performed in the horizontal sealing process. It is provided with a separation step for separating the substrate. In the vertical sealing step, heat sealing is performed with the pair of vertical sealing rollers rotating and sandwiching both side edges of the film. In the horizontal sealing step, the surface of each of the pair of horizontal sealing rollers is provided with protrusions continuously along the width direction, and when the pair of horizontal sealing rollers rotate, the protrusions are intermittently brought into contact with each other to form a tubular film body. Heat seal with sandwich.

And while the protrusion part of a horizontal seal roller does not contact | abut, it controls so that the sending speed of the film sent out from an original fabric roll and the circumferential speed of a vertical seal roller may be set to 1st speed , respectively. On the other hand, while the projecting portions of the horizontal seal roller are in contact with each other, the film feed speed, the circumferential speed of the vertical seal roller, and the circumferential speed of the horizontal seal roller are respectively set to the second speed. The first speed becomes faster than the second speed.

  The present invention is not limited to the above-described embodiments, and can be applied to a manufacturing method for manufacturing any sealed bag without departing from the gist of the invention.

10, 110, 210, 310 Sealed bag manufacturing apparatus 11 Guide roller (guide portion)
12 Guide bar (folded part)
20, 120 Side seal portion 21, 121 Side seal roller 30 Filling nozzle 40, 2 40 Horizontal seal portion 41 Horizontal seal roller 241 Horizontal seal means 41P, 241P Protruding portion 50 Adjustment roller 60 Cutter (separation portion)
7 0 control section CT contents FL, FL' film PD1, PD1' a series of sealed bag PD2, PD2' separate sealed bag
R original fabric roll T1 side end TU, TU 'tubular film body

Claims (2)

A guide step of guiding the film issued Ri feed bulk roll or et downward,
Folding step of folding the film sent in the downward direction into two in the width direction;
A side sealing step in which heat sealing is performed while a pair of side seal rollers rotate between the side end portions of the film folded in two;
A filling step of filling the contents into a cylindrical film body in which the film is formed into a cylindrical shape;
A transverse sealing step of intermittently heat-sealing the tubular film body filled with the contents intermittently on the same plane as the heat-sealing of the side end portion of the tubular film body so as to cross the longitudinal direction. When,
In more transverse seals Engineering, after said contents are filled tubular film body is separated as a series of sealed bag, the lateral sealing process disconnecting individually the sealed bag in a place where it has been heat sealed at the separating In a manufacturing method of a sealed bag comprising a step ,
Before the Kiyoko sealing step, the pair of lateral seal rollers rotate, the cylindrical protrusion each other continuously provided the pair of lateral seal rollers along the width direction on each surface is intermittently brought into contact with the film Heat seal across the body ,
Between the projecting portions to each other before Kiyoko seal roller is in contact,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller;
While controlling the circumferential speed of the horizontal sealing roller to be the second speed,
While the protrusions of the horizontal seal roller do not contact each other,
While maintaining the circumferential speed of the horizontal sealing roller at the second speed,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller
Are controlled so as to have a first speed faster than the second speed , respectively . The film from the two original fabric roll issued their respective feed Ri downward, and the two guide steps two films is induced to face,
A side seal step of heat-sealing while rotating two pairs of side seal rollers one by one on both side ends of the two films sent to face each other in the downward direction;
A filling step of filling the contents into a cylindrical film body in which the two films are cylindrical ;
A transverse sealing step of intermittently heat-sealing the tubular film body filled with the contents intermittently on the same plane as the heat-sealing of both ends of the tubular film body so as to cross the longitudinal direction. ,
In more transverse seals Engineering, after said contents are filled tubular film body is separated as a series of sealed bag, the lateral sealing process disconnecting individually the sealed bag in a place where it has been heat sealed at the separating In a manufacturing method of a sealed bag comprising a step ,
Before the Kiyoko sealing step, the pair of lateral seal rollers rotate, the cylindrical protrusion each other continuously provided the pair of lateral seal rollers along the width direction on each surface is intermittently brought into contact with the film Heat seal across the body ,
Between the projecting portions to each other before Kiyoko seal roller is in contact,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller;
While controlling the circumferential speed of the horizontal sealing roller to be the second speed,
While the protrusions of the horizontal seal roller do not contact each other,
While maintaining the circumferential speed of the horizontal sealing roller at the second speed,
The film feeding speed fed from the raw roll,
The circumferential speed of the side seal roller
Are controlled so as to have a first speed faster than the second speed , respectively .

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