JP2016132212A - Bag-making method, bag making machine and packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag-making method capable of forming a recessed or a projected base material processing part by limiting the change of a bag making machine to a minimum, a bag making machine, and a packaging bag manufactured by the bag-making method.SOLUTION: The bag-making method for forming a packaging bag by heat-sealing a base material while intermittently conveying the base material of the packaging bag in a longitudinal direction is characterized in that the process of heat-sealing the base material includes the heating step of heating the part of the base material to be sealed while pressing it by opposing pressing members from both sides in the thickness direction of the base material, and the cooling step of cooling the sealed part pressed in the heating step while pressing it by the opposing pressing members from both sides in the thickness direction of the base material 30, the same sealed part is pressed by one pitch or two pitches of intermittent conveyance by the pressing members to be cooled in the cooling step, at least one of the pressing members has a recessed part 41c or a projected part at one optional pitch among the pitches, and thus a recessed or projected base material processing part 37 is formed in the sealed part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a bag making method, a bag making machine, and a packaging bag.

  Conventionally, a bag making machine that forms a bag by performing various processes while intermittently or continuously transporting a base material such as a resin film, heat-seals the base material fed from the upstream, A packaging bag is formed, and is cut into individual packaging bags downstream.

For example, Patent Document 1 describes a two-sided bag making machine that manufactures a standing pouch by guiding a folded bottom material between a pair of body materials and heat-sealing the body material and the bottom material with a heat seal bar. ing.
Patent Document 2 describes a bag making machine that inserts an accessory such as a spout between a pair of body members and heat-seals the accessory to the body member.

Japanese Patent Laid-Open No. 9-188311 JP-A-9-262914

  In order to attach a device for processing a packaging bag to a bag making machine, it is necessary to secure a new space on the bag making machine and adjust the conveyance pitch and speed.

  The present invention has been made in view of the above circumstances, and a bag making method, a bag making machine, and the above-mentioned manufacturing method capable of forming a concave or convex base material processing portion with a minimum change of the bag making machine. It aims at providing the packaging bag manufactured by the bag method.

  In order to solve the above-mentioned problem, a bag-making method for forming a packaging bag by heat-sealing the base material while intermittently transporting the base material of a continuous packaging bag in the longitudinal direction, the base material being heated The sealing step includes a heating step in which the sealing portion of the base material is heated while being pressed by pressing members opposed from both sides in the thickness direction of the base material, and the sealing portion heated in the heating step, A cooling step of cooling while pressing with opposing pressing members from both sides in the thickness direction of the base material, and in the cooling step, the same sealing portion is intermittently conveyed by 1 pitch or 2 pitches or more by the pressing member. Cooling while pressing, and at least one of the pressing members has a concave portion or a convex portion at an arbitrary pitch, thereby forming a concave or convex base material processed portion at the sealing portion. Direction To provide.

The arbitrary one-pitch pressing member may have a concave portion, and a convex base material processed portion may be formed at the seal portion.
The arbitrary one pitch may be the first pitch in the cooling step.
The sealing portion where the base material processing part is formed may be provided in at least one selected from a body part, a bottom part, and a spout peripheral part of the packaging bag.
At least one of the substrate processing parts may have a visual effect.
At least one of the substrate processing parts may have a tactile effect.
At least one of the base material processing portions is at least selected from the shape retention of the packaging bag, the ease of holding the packaging bag, the ease of opening the packaging bag, and the ease of dispensing the contents from the packaging bag. You may have one effect.

  The present invention also provides a supply means for supplying a base material of a continuous packaging bag, a transport means for intermittently transporting the base material in the longitudinal direction, and heat for heat-sealing the base material to form a packaging bag. A bag making machine that performs the bag making method, wherein the heat sealing means presses a sealing portion of the base material with pressing members opposed from both sides in the thickness direction of the base material. Heating means for heating while cooling means for cooling while pressing the sealing portion heated by the heating means with pressing members facing from both sides in the thickness direction of the base material, The same sealing location is cooled while being pressed by 1 pitch or 2 pitches or more of intermittent conveyance by the pressing member, and at least one of the pressing members has a concave portion or a convex portion at any one pitch, thereby the sealing location The concave or provide bag-making machine, and forming a substrate processing portion of the convex.

  Further, the present invention is manufactured by the bag making method, and at least one seal portion selected from the trunk portion, the bottom portion, and the spout peripheral portion of the packaging bag has a visual effect, a tactile effect, and a shape of the packaging bag. It has a concave or convex base material processing portion having at least one effect selected from holding, ease of holding the packaging bag, ease of opening the packaging bag, and ease of pouring the contents from the packaging bag A packaging bag is provided.

  According to the present invention, by providing the pressing member with a concave portion or a convex portion at any one pitch in the cooling step, the base material processing portion having a concave or convex portion at the seal portion without any other changes to the bag making machine. Can be formed.

It is a perspective view which shows an example of a bag making machine. It is a side view which shows an example of a heat sealing means. (A)-(c) is a top view explaining an example of the process in which a packaging bag is formed from a base material. (A)-(c) is sectional drawing which shows an example of the process in which a recessed part is provided in one pressing member and a base-material processed part is formed in a seal location. (A)-(c) is sectional drawing which shows an example of the process in which a recessed part is provided in both press members and a base-material processed part is formed in a seal location. (A)-(c) is sectional drawing which shows an example of the process in which a convex part is provided in one pressing member and a base-material process part is formed in a seal location. It is a perspective view which shows an example which applied the cooling means which provided the recessed part in one press member to the bag manufacturing machine of 2 chamfering. It is a perspective view which shows an example which applied the cooling means which provided the recessed part in both the press members to the bag manufacturing machine of 2 chamfering. It is a top view which shows an example of the base material in which the packaging bag which has a spout was formed continuously.

  Hereinafter, based on a preferred embodiment, the present invention will be described with reference to the drawings.

  The bag making machine 10 shown in FIG. 1 is a manufacturing apparatus that manufactures a standing pouch as the packaging bag 36. In the bag making machine 10, the supply means for supplying the base material 30 of the continuous packaging bag 36 includes a feeding unit 11, a trunk original fabric processing unit 12, a half processing unit 13, an alignment unit 14, and a bottom original fabric processing unit 15. including. When the bottom member 27 is not used, the bottom original fabric processing unit 15 can be omitted. Moreover, when providing a pair of feeding part (body member roll) corresponding to a pair of trunk | drum member 22, the trunk | drum raw fabric process part 12 and the half cut process part 13 can be abbreviate | omitted.

  On the downstream side of the supply means, the bag making machine 10 includes a transport roll 81, 82, 83 that transports the base material 30 (the body members 22, 22 and the bottom member 27) overlapped by the alignment unit 14, and the base material 30. A bottom seal processing unit 16 that forms a bottom seal unit, a cylinder seal processing unit 17 that forms a cylinder seal unit on the base material 30, a cutting processing unit 18 that cuts the base material 30 into a packaging bag 36, and a packaging bag 36 An unloading unit 19 for unloading is included.

  The base material 30 includes a pair of upper and lower body members 22, 22 and a bottom member 27 inserted between the body members 22 in a folded manner. The trunk member 22 is continuous in the longitudinal direction from the trunk raw fabric roll 20 to the dividing processing section 18. Further, the bottom member 27 is continuous in the longitudinal direction from the bottom raw fabric roll 25 to the dividing processing portion 18.

  The general functions of the respective parts constituting the supply means are as follows. The feeding unit 11 has a body roll 20. The trunk original fabric processing unit 12 performs tension adjustment, direction change, and the like of the trunk original fabric 21 fed out from the trunk original fabric roll 20. The half cut processing unit 13 cuts the body original fabric 21 at the center in the width direction to form a pair of body members 22 and 22. The alignment unit 14 inserts a bottom member 27 between the upper and lower body members 22, 22. The bottom raw fabric processing section 15 processes the bottom raw fabric 26 fed out from the bottom raw fabric roll 25 to constitute a bottom member 27.

  In the supply means, the body member 22 is processed as follows. The body roll 21 fed from the feed section 11 is converted in the width direction from horizontal to vertical in the body feed processing section 12, and then the pair of upper and lower body members 22, 22 by the cutter 13 a in the half processing section 13. To be half cut. The body members 22 and 22 are overlapped so as to be in close contact with the bottom member 27 by the alignment roll 14b while the width is returned to the horizontal at the alignment portion 14 and the tension and the longitudinal position are adjusted by the dancer 14a.

  The bottom member 27 is obtained by passing the bottom raw fabric 26 fed out from the bottom raw fabric roll 25 through the dancer 15a and then folding it into the folding roll 15b. A through hole 28 (see FIG. 3A) is formed in the bottom member 27 by the puncher 15c. When the bottom raw fabric 26 is folded in half, a guide plate (not shown) or the like can be used to guide the folding of the bottom raw fabric 26 from the bottom raw fabric 26 to the bottom member 27.

  The base material 30 on which the body members 22 and 22 and the bottom member 27 are overlapped at the alignment unit 14 is processed into a packaging bag 36 while being conveyed in the longitudinal direction. The conveyance rolls 81, 82, 83 are conveyance means that intermittently convey the base material 30 in the longitudinal direction. In this embodiment, a pair of conveyance rolls are provided above and below the substrate, and the substrate sandwiched between them is conveyed by intermittently rotating the conveyance roll. A jig such as a gripping tool is used instead of a roll, and the jig is reciprocated back and forth for each intermittent transport stroke. The jig transports the base material when moving forward, and the jig moves away from the base material when returning. It can also be configured to return to the position.

  As shown in FIGS. 1 and 2, the bottom seal processing unit 16 and the trunk seal processing unit 17 are heat sealing means that heat-seal the base material 30 to form a seal part of the packaging bag 36. In the case of the present embodiment, the packaging bag 36 is a standing pouch with an unsealed upper part serving as a filling port, as shown in FIG. The bottom seal process part 16 forms the bottom seal part 31 of the packaging bag 36, as shown to Fig.3 (a). As shown in FIG. 3B, the trunk seal processing unit 17 forms the trunk seal unit 32 of the packaging bag 36. The body seal portions 32, 32 of the present embodiment are provided on both sides of the packaging bag 36.

  At the bottom of the packaging bag 36, a bottom member 27 (see FIG. 1) folded in two along a fold line 27a is inserted between the pair of body members 22 and 22. In the bottom seal portion 31, heat sealing is mainly performed between the body member 22 and the bottom member 27, but the inner surfaces of the body members 22, 22 are heat-sealed at locations where the through holes 28 are formed in the bottom member 27. . The trunk seal portion 32 overlaps the bottom seal portion 31 at the bottom of the packaging bag. Above the broken line 27 a of the bottom member 27, the bottom member 27 is not interposed between the body members 22 and 22, and the inner surfaces of the body members 22 and 22 are heat-sealed by the body seal portion 32.

  3A and 3B, the upper and lower sides of the paper surface are the width direction of the base material 30, and the left and right sides of the paper surface are the longitudinal direction of the base material 30. The base material 30 on the two-chamfer bag making machine 10 has two rows of molding parts 33 and 33 on which the packaging bag 36 is molded, and a separation part 34 (also referred to as a dove) between the molding parts 33 and 33. Have In each of the parts to be molded 33, a cutting scheduled part 35 is set for each region corresponding to one packaging bag 36 and between the parts to be molded 33, 33 and the separation part 34. Until the scheduled cutting part 35 is cut by the downstream dividing part 18, the base material 30 is connected in the longitudinal direction and is continuous.

  The bottom seal processing unit 16 is heated by the heating unit 61 and the heating unit 61 that heats the sealing portion that hits the bottom seal unit 31 while pressing the pressed part 61a and 61b facing each other in the thickness direction of the base material 30. And a cooling means 62 that cools the sealed portion while pressing it with the pressing means 62a and 62b facing each other from both sides in the thickness direction of the base material 30. The cooling means 62 is provided downstream of the heating means 61. In the cooling means 62, the same sealing portion is cooled while being repeatedly pressed by two or more pitches of intermittent conveyance by the pressing means 62a and 62b.

  The trunk seal processing unit 17 is heated by the heating unit 71 and the heating unit 71 that heats the sealing portion that hits the trunk seal unit 32 while pressing the pressed part 71a and 71b facing each other in the thickness direction of the base material 30. And a cooling means 72 that cools the sealed portion while pressing it with pressing means 72 a and 72 b facing each other from both sides in the thickness direction of the base material 30. The cooling means 72 is provided downstream of the heating means 71. In the cooling unit 72, the same sealing portion is cooled by repeatedly pressing two or more pitches of intermittent conveyance by the pressing units 72a and 72b.

  The pressing means 71a and 71b of the heating means 71 and the pressing means 72a and 72b of the cooling means 72 are provided at different pitches. The interval is, for example, every other pitch. The number of pitches pressed by the cooling means 62 and 72 includes one pitch of the processing units 40 and 50 described later, and may be one pitch or two pitches or more with respect to the same seal portion. In the case where all or most of the sealed portions such as the bottom seal portion and the trunk seal portion are formed in separate steps, the number of pitches to be pressed can be counted for each seal portion. Other than the processing units 40 and 50, the pressing of the sealing portion by the cooling means 62 and 72 may be 1 pitch or more.

  The cooling means 62 and 72 have processing units 40 and 50 that form concave or convex base material processing parts at seal locations at an arbitrary pitch. Therefore, the processing units 40 and 50 will be described in more detail. In FIG. 2, as an example, the processing units 40 and 50 are provided at the end of the cooling means 62 and 72, but the present embodiment is not particularly limited to this.

  4A to 4C show a process of forming the base material processing portion 37 at the sealing portion of the base material 30 by the processing portion 40. FIG. The processing unit 40 has a cooling die 41 on one side of the base material 30 in the thickness direction, and a cradle 42 on the opposite side. As shown in FIG. 4A, the cooling mold 41 includes a mold 41a that contacts the base material 30, and a cooling base 41b that contacts the mold 41a. A recess 41c is provided on the surface of the metal mold 41a serving as the pressing member on the base material 30 side. The cradle 42 includes a rubber base 42a that is in contact with the base material 30, and a cooling base 42b that is in contact with the rubber base 42a. The cooling bases 41b and 42b are cooling sources that receive heat by circulating a refrigerant therein.

  2 is compared with the processing unit 40, except that the pressing unit 72a of the cooling unit 72 has a configuration in which the mold 41a of the cooling mold 41 of the processing unit 40 does not have the recess 41c. It's okay. The pressing means 72b can be configured similarly to the cradle 42.

  When the base material 30 is cooled by the processing unit 40 having the recess 41c in the mold 41a, as shown in FIG. 4B, when the base material 30 is pressed by the mold 41a around the recess 41c, the recess 41c A part of the base material 30 enters. At this time, the base material 30 is in a state in which heat is left inside the base material 30 and the resin is soft while the cooling means 72 in front of the processing unit 40 cools both the front and back surfaces of the base material 30. is there. Therefore, it is considered that when the mold 41a having the recess 41c comes into contact, a part of the material of the base material 30 flows due to the pressure difference generated between the recess 41c and the periphery thereof. Since the rubber base 42a is made of rubber, the rubber base 42a can be deformed following the base material 30 and locally project toward the recess 41c. As a result, as shown in FIG. 4C, a base material processing portion 37 that is convex on one side and concave on the opposite side is formed.

  FIGS. 5A to 5C show a process of forming the base material processing part 38 at the seal location of the base material 30 by the processing part 50. The processing unit 50 includes cooling dies 51 and 52 on both sides of the base material 30 in the thickness direction. As shown in FIG. 5A, the cooling dies 51 and 52 include dies 51a and 52a that are in contact with the base material 30, and cooling bases 51b and 52b that are in contact with the dies 51a and 52a. Concave portions 51c and 52c are provided on the surface of the molds 51a and 52a serving as pressing members on the base material 30 side. The cooling bases 51b and 52b are cooling sources that receive heat by circulating a refrigerant therein.

  When the cooling means 62 shown in FIG. 2 is compared with the processing section 50, the pressing means 62a and 62b of the cooling means 62 have recesses 51c and 52c in the molds 51a and 52a of the cooling molds 51 and 52 of the processing section 50. The same may be applied except that it is not configured. However, the planar shape with respect to the base material 30 may be different.

  For example, since it is necessary to control the pitch in the processing unit 50, it is preferable that the molds 51a and 52a have the same shape as the seal location (bottom seal portion 31) as shown in FIG. On the other hand, since the cooling means 62 other than the processing unit 50 does not need to control the pitch, the dies of the pressing means 62a and 62b have a solid shape that presses without distinction to the periphery of the seal portion. Is preferred.

  When the base material 30 is cooled by the processing unit 50 having the recesses 51c and 52c in the molds 51a and 52a, as shown in FIG. 5B, the base material 30 is formed by the molds 51a and 52a around the recesses 51c and 52c. When pressing, a part of the base material 30 enters the recesses 51c and 52c. This phenomenon is the same as when the mold 41a of FIG. 4C is used. However, in this embodiment, the concave portions 51c and 52c are provided on both sides of the base material 30, and therefore, as shown in FIG. Thus, the convex base material processing part 38 is formed on both sides.

  The case where the mold 41a having the concave portion 41c is provided on one side of the base material 30 as shown in FIG. 4, and the case where the molds 51a and 52a having the concave portions 51c and 52c are provided on both sides of the base material 30 as shown in FIG. In comparison, it is easier to obtain a three-dimensional shape with higher convexity on one side than on both sides. In the processing unit 50, when the positions of the concave portions 51c and 52c provided on both sides of the base material 30 are shifted, a base material processing unit having a convex portion at each position can be formed. Since the deformation of the base 42a also contributes to the flow of the base material 30, a concave portion is formed on the back side of the convex portion, and the three-dimensional shape can be made higher.

  Although FIG. 4 and FIG. 5 demonstrated the case where the recessed part was provided in the press member (metal mold | die), you may provide a convex part in a press member (metal mold | die). FIG. 6 shows an example of a process in which a convex portion is provided on the pressing member and a base material processed portion is formed at a seal location. As shown in FIG. 6 (a), when the substrate 30 is cooled by the processing unit 40 having the convex portion 41d on one mold 41a, the metal around the convex portion 41d is shown in FIG. 6 (b). When pressing the base material 30 with the mold 41a, a part of the base material 30 is pressed by the convex portion 41d. At this time, the base material 30 is in a state in which heat is left inside the base material 30 and the resin is soft while the cooling means 72 in front of the processing unit 40 cools both the front and back surfaces of the base material 30. is there. Therefore, when the mold 41a having the convex portion 41d is contacted, a part of the material of the base material 30 flows due to the pressure difference generated between the convex portion 41d and the periphery thereof. The rubber base 42a is deformed following the base material 30, and can be locally recessed by the convex portion 41d. As a result, as shown in FIG. 6 (c), a base material processed portion 37 that is concave on one side and convex on the opposite side is formed.

  Moreover, you may each provide a convex part in both metal mold | dies so that it may oppose through a base material. In this case, for example, concave base material processing parts (not shown) can be formed on both surfaces of the base material. As another example, a mold having a convex portion on one side of the base material may be provided, and a mold having a concave portion on the opposite side of the base material may be provided. The same mold may have a concave part or a convex part at two or more different positions. With these configurations, a concave or convex base material processed portion can be formed at the sealing portion of the base material corresponding to the position of the concave portion or convex portion.

  Next, a preferred embodiment of a two-sided bag making machine will be described. On the bag making machine, one side of the base material is the front surface (A surface) of the packaging bag, and the opposite side of the base material is the back surface (B surface) of the packaging bag. In the two-chamfer bag making machine, as shown in FIGS. 7 and 8, the base material 30 has two rows of molded parts 33, 33, but the front and back are reversed in each of the molded parts 33, 33. There may be.

  7 and 8, the upper surface of the base material 30 is the front surface A, and the lower surface of the base material 30 is the back surface B. On the other hand, in the molding target 33 on the left side, the upper surface of the base material 30 is the back surface B, and the lower surface of the base material 30 is the front surface A. This is because printing management and the like are easy because the front A is different for each of the molding parts 33 and 33 during bag making. Further, when forming a packaging bag having a spout on either one of the left and right sides of the packaging bag, as shown in FIG. There is also an advantage that it can be arranged on the other side. FIG. 9 is different from FIG. 3B in that a seal portion surrounding the spout 39 is included on one side of the trunk seal portion 32, but the other portions may be the same.

  FIG. 7 shows the cooling means 72 (see FIG. 2) of the trunk seal processing unit 17 in which the cooling die 41 of the processing unit 40 (see FIG. 4A) is on the back B side and the cradle 42 is on the front A side. Thus, the example which replaced arrangement | positioning for every to-be-shaped part 33 and 33 is shown. In this case, the base material processing portion 37 of FIG. 4C is formed to be convex toward the back surface B side. Although not particularly illustrated, a mold 41a having a concave portion 41c or a convex portion 41d may be provided on the front surface A side, or a mold 41a having a concave portion 41c or a convex portion 41d may be provided on both the front surface A and the back surface B. You can also.

  FIG. 8 shows the difference in the shapes of the pressing means 62a and 62b and the dies 51a and 52a as described above. In the two-chamfer bag making machine, the bottom seal processing unit 16 (see FIG. 2) is cooled. The example which provided the process part 50 (refer Fig.5 (a)) in the means 62 is shown.

  According to this embodiment, a concave or convex base material processing part can be formed in at least one seal location such as the trunk part, bottom part, and spout peripheral part of the packaging bag. Substrate processing parts include visual effects (characters, symbols, arrows, landmarks, patterns, designs, etc.), tactile effects (slip prevention, Braille, etc.), shape retention of packaging bags, ease of holding packaging bags, packaging bags It is possible to have at least one effect such as the ease of opening and the ease of pouring the contents from the packaging bag.

  Since the base material processing part has a configuration in which the base material itself is processed into a concave or convex shape, there is no possibility that the adhesive peels off and the material cost can be reduced as compared with a method of adhering other members and materials. it can. When forming the seal part, the base material processed part can be formed by providing a concave or convex part on the pressing member such as a mold of the cooling means, so when adding a device that bonds other members or materials Compared with, it becomes easy to change the design of the bag making machine.

The body seal part of the packaging bag may be the side edges of the body part, may be one side edge, or may be a seal part opened for the purpose of partitioning inside the body part.
In the case where the base material processing portion is provided in the periphery of the spout, it can be used for a mark of the opening start position of the spout, a slip stopper, or the like.
A high-class feeling can also be produced by providing unevenness of a design shape with high designability to each seal part of the packaging bag.

  By providing the pressing member (mold, etc.) with a concave or convex part for forming the base material processed part only at an arbitrary pitch in the cooling step, the base material processed part with clear irregularities can be changed with minimal equipment change. Can be realized. When the pressing member is provided with a concave portion or a convex portion over two pitches or more, alignment is necessary, and the shape of the base material processed portion may become unclear if it is displaced. When the pressing member is provided with a concave portion or a convex portion at the first pitch (including the case where only one pitch is pressed at the sealing portion in the cooling step), the fluidity of the resin of the base material heated in the heating step is greater, Clear concavo-convex processing becomes possible. In this case, even if a pressing member that does not have a concave portion or a convex portion is used thereafter, the shape of the base material processed portion is not obscured by setting the temperature of the resin to the melting point or less according to the cooling condition of the first pitch. .

  As mentioned above, although this invention has been demonstrated based on suitable embodiment, this invention is not limited to the above-mentioned embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  In order to form the base material processed portion at the seal portion by a pressing member (such as a mold) having a concave portion or a convex portion, the pressing member is preferably in direct contact with the sealing portion of the base material. In order to prevent the pressing member from adhering to the base material, it is possible to interpose a peelable sheet or the like between the pressing member and the base material. In order not to disturb, it is preferable to have flexibility and followability to deformation of the base material.

  In the cooling means before the processing unit, it is possible to provide the same surface as the conventional sandblasting and irregularities such as lattices on the surface of the pressing member (mold or the like). These irregularities are for the purpose of concentrating the pressing force by the pressing member, suppressing adhesion to the base material, etc., and forming a concave or convex base material processed part as clear according to the present invention Can not.

  A flexible film such as various laminated films or a single film can be used for the original fabric and the substrate without any particular limitation. As a flexible film, a single-layer plastic film having a heat-fusible property, a coextruded multilayer film having a resin layer having a heat-fusible property on the outer layer, a resin layer having a heat-fusible property and a metal foil such as an aluminum foil, Examples thereof include a laminate film obtained by laminating paper and various plastic films. If necessary, the flexible film may be an ethylene-vinyl alcohol copolymer, a metal or inorganic compound vapor-deposited layer, or a layer having a metal layer such as aluminum as an intermediate layer. It is not limited.

The bag making machine can also be configured to manufacture a continuous packaging bag in which the packaging bags are connected in a multiple manner by omitting the dividing processing section for dividing the molded packaging bag into individual packaging bags.
When forming a packaging bag on a base material, the number of the packaging bags on the base material arranged in the width direction is not particularly limited, and can be applied to any one of chamfering, two-chamfering, and multi-chamfering.

A ... Front, B ... Back, 10 ... Bag making machine, 11 ... Feeding part, 12 ... Body part processing part, 13 ... Semi-processing part, 13a ... Cutter, 14 ... Positioning part, 14a ... Dancer, 14b ... Alignment roll, 15 ... Bottom raw fabric processing section, 15a ... Dancer, 15b ... Molding roll, 15c ... Puncher, 16 ... Bottom seal processing section, 17 ... Body seal processing section, 18 ... Dividing processing section, 19 ... Unloading section, DESCRIPTION OF SYMBOLS 20 ... Body raw roll, 21 ... Body raw roll, 22 ... Body member, 25 ... Bottom raw roll, 26 ... Bottom raw fabric, 27 ... Bottom member, 27a ... Polyline, 28 ... Through-hole, 30 ... Base 31 ... Bottom seal part, 32 ... Body seal part, 33 ... Molded part, 34 ... Separation part, 35 ... Cutting part, 36 ... Packaging bag, 37, 38 ... Base material processing part, 39 ... Spout, 40, 50 ... processing section, 41, 51, 52 ... cooling mold, 41 , 51a, 52a ... mold, 41b, 42b, 51b, 52b ... cooling base, 41c, 51c, 52c ... concave, 41d ... convex, 42 ... cradle, 42a ... rubber base, 61, 71 ... heating means, 61a , 61b, 71a, 71b ... pressing means, 62, 72 ... cooling means, 62a, 62b, 72a, 72b ... pressing means, 81, 82, 83 ... transport rolls.

Claims (9)

A bag-making method for forming a packaging bag by heat-sealing the substrate while intermittently conveying the substrate of a continuous packaging bag in the longitudinal direction,
The step of heat-sealing the base material includes a heating step in which the sealing portion of the base material is heated while being pressed by pressing members opposed from both sides in the thickness direction of the base material, and the heating step is performed in the heating step. A cooling step of cooling while pressing the sealing part with pressing members facing from both sides in the thickness direction of the base material,
In the cooling step, the same sealing portion is cooled while being pressed by one or more pitches of intermittent conveyance by the pressing member, and at least one of the pressing members has a concave portion or a convex portion in any one pitch. To form a concave or convex base material processed portion at the seal location.   The bag making method according to claim 1, wherein the arbitrary one pitch pressing member has a concave portion, and a convex base material processed portion is formed at the seal portion.   The bag making method according to claim 1 or 2, wherein the one arbitrary pitch is the first one pitch of the cooling step.   The said seal | sticker location in which the said base-material processed part is formed is provided in at least one selected from the trunk | drum of the said packaging bag, a bottom part, and a spout periphery part, The any one of Claims 1-3 characterized by the above-mentioned. The bag making method according to Item 1.   The bag making method according to any one of claims 1 to 4, wherein at least one of the base material processing parts has a visual effect.   The bag making method according to claim 1, wherein at least one of the base material processed parts has a tactile effect.   At least one of the base material processing portions is at least selected from the shape retention of the packaging bag, the ease of holding the packaging bag, the ease of opening the packaging bag, and the ease of dispensing the contents from the packaging bag. It has one effect, The bag making method of any one of Claims 1-6 characterized by the above-mentioned. A supply means for supplying a continuous packaging bag substrate;
Conveying means for intermittently conveying the substrate in the longitudinal direction;
Heat sealing means for heat-sealing the base material to form a packaging bag,
A bag making machine for performing the bag making method according to any one of claims 1 to 7,
The heat sealing means includes
A heating means for heating the sealing portion of the base material while pressing it with pressing members facing from both sides in the thickness direction of the base material,
A cooling means for cooling the seal spot heated by the heating means while being pressed by pressing members facing from both sides in the thickness direction of the base material;
In the cooling means, the same sealing portion is cooled while being pressed by one or more pitches of intermittent conveyance by the pressing member, and at least one of the pressing members has a concave portion or a convex portion in any one pitch. To form a concave or convex base material processing portion at the seal location.   It is manufactured by the bag making method according to any one of claims 1 to 7, and has a visual effect and a tactile sensation on at least one sealing portion selected from a body portion, a bottom portion and a spout peripheral portion of the packaging bag. Concave or convex having at least one effect selected from the following: effect, shape retention of the packaging bag, ease of holding the packaging bag, ease of opening the packaging bag, ease of dispensing the contents from the packaging bag A packaging bag having a base material processing portion.

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