JP2017081619A - Creasing device, pillow packaging machine, packaging material, packaging method and pillow packaging body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a pillow packaging body that is not conspicuous in a lateral crease when a product is wrapped, and is superior in visibility and beautiful appearance of the lateral printed matter or the like.SOLUTION: A packaging film YA1 has a seal forming area 110 intermittently disposed along a transport direction and extended in the traverse direction, and a fold forming area 111 adjacent to the seal forming area and intermittently disposed along the transport direction and the traverse direction. The seal forming area is an area to form a seal part by heat sealing of both end openings after forming the packaging film in a tubular shape. The fold forming area is an area to form a folding part obtained by inwardly folding a portion of the packaging film in the vicinity of the seal part along the transport direction with the heat sealing. A crease L along the transport direction is intermittently formed at least in a portion of the seal forming area adjacent to each other in the fold forming area.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a crease forming device, a pillow packaging machine, a packaging material, a packaging method, and a pillow package.

  To the bag making machine of the packaging machine, in accordance with the sequential supply of articles, a long film is continuously fed out from the original fabric and is continuously supplied to form a bag in a cylindrical shape. Next, in the center seal device, both end edges (center seal portions) in the width direction of the films stacked on each other are heated while being sandwiched between a pair of bar sealers, and then pressed with a press roller, thereby the center seal. (Vertical seal). Then, in the top seal device, the top seal (lateral seal) and cut are performed in the width direction of the film for each pitch according to the length of the article, and the package is manufactured.

  In such a top seal device of a packaging machine, a side of a cylindrical film containing a package is folded inward by a gusset claw to form a folded portion (gazette portion) and both ends of the cylindrical film are opened. Is heated and pressurized to apply a top seal. At this time, a fold line that is folded inward may be formed on the side (side surface) of the package so that the gusset portion can be easily folded (see, for example, Patent Document 1).

  In the film folding apparatus described in Patent Document 1, a film is sandwiched between a heat plate having a protrusion and a roller having a groove that engages with the protrusion on the peripheral surface. By rotating the roller, a crease for forming a gusset portion (and top sealing) is formed continuously in the traveling direction of the film.

Japanese Utility Model Publication No. 62-7532

  However, the crease for forming the gusset portion formed by the film folding apparatus described in Patent Document 1 is the side surface of the bag-made product (the main body portion of the package in which the product is stored, and the top Even after the package that contains the product is formed, it is formed continuously in the center part of the side (when the surface continuous to the surface to be pressurized and heated for sealing is the front (back)) Since the state folded inward remains, when printing on the side, printing became difficult to read, and the aesthetic appearance as a package was impaired.

  The present invention has been made in view of the above problems, and forms a gusset portion and forms a fold for top sealing, and does not make the side fold noticeable when the product is packaged. An object of the present invention is to provide a crease forming device, a pillow packaging machine, a packaging material, a packaging method, and a pillow packaging body for obtaining a pillow packaging body having good visibility and aesthetics.

  (1) The present invention is a crease forming device for forming a crease in a packaging film that is continuously conveyed during packaging of a pillow package, and the packaging film is intermittently disposed along a conveyance direction; A seal part formation scheduled area extending in a transverse direction; and a folded part formation schedule area disposed adjacent to the seal part formation schedule area, wherein the seal part formation schedule area forms the packaging film in a cylindrical shape After that, the two openings are heat sealed to form a seal portion, and the folding portion formation scheduled region is a part of the packaging film in the vicinity of the seal portion along the transport direction along with the heat seal. An area for forming a folded portion that is folded in the direction, and at least a part of the seal portion formation planned region adjacent to the folded portion formation planned region is intermittently folded along the conveyance direction Formed, it is creasing apparatus according to claim.

  According to such a configuration, it is possible to form a pillow package having a good aesthetic appearance that is folded at an accurate position without causing a positional shift of the packaging film. Moreover, since a fold is not visually recognized from an external appearance, the aesthetics of a package can be made favorable. Moreover, even if it is a case where printing is given to the side surface of a package, the printing etc. can prevent that it becomes a visual defect.

  (2) The crease forming apparatus according to (1), wherein the fold is also formed in at least a part of the fold-part formation scheduled region.

  According to such a configuration, since the crease is hardly visible from the appearance, the aesthetic appearance of the package can be improved. Moreover, even if it is a case where printing is given to the side surface of a package, the printing etc. can prevent that it becomes a visual defect.

  (3) In the present invention, the packaging film has a body part formation scheduled region that is intermittently disposed along the transport direction and extends in the transverse direction, and the body part formation scheduled region is accommodated by an object to be packaged. It is an area for forming a main body part, and the fold is not formed in an area that is to be a side surface of the main body part that is continuous with the folding part among the main body part formation planned area of the packaging film. The crease forming apparatus according to (1) or (2) above, wherein

  (4) The present invention also includes a pair of rollers provided with grooves and projections that fit into a part of the peripheral surface, and a pair of rollers extending in a direction parallel to the transverse direction of the packaging film. Any one of the above (1) to (3), wherein the fold is formed by sandwiching the packaging film between the pair of rollers at a predetermined timing. The crease forming device according to one item.

  (5) The fold forming apparatus according to any one of (1) to (4), wherein the fold forming position in the transverse direction of the packaging film can be changed. It is.

  According to such a configuration, even if the shape of the article and the packaging body is changed, a pillow packaging body having a good aesthetic appearance that is folded at an accurate position without causing a positional deviation of the packaging film is formed. can do. Moreover, since a fold is not visually recognized from an external appearance, the aesthetics of a package can be made favorable. Moreover, even if it is a case where printing is given to the side surface of a package, the printing etc. can prevent that it becomes a visual defect.

  (6) The present invention also provides a crease forming device according to any one of the above (1) to (5), and a bag making machine for bag-making a continuously supplied belt-shaped packaging film. A center seal device that seals the polymerization end of the packaging film formed in a cylindrical shape, and a downstream end of the center seal device, the opening of both ends of the cylindrical packaging film in the width direction of the packaging film And a top sealing device for sealing and cutting.

  According to such a configuration, it is possible to form a pillow package having a good aesthetic appearance that is folded at an accurate position without causing a positional shift of the packaging film. Moreover, since a fold is not visually recognized from an external appearance, the aesthetics of a package can be made favorable. Moreover, even if it is a case where printing is given to the side surface of a package, the printing etc. can prevent that it becomes a visual defect.

  (7) The present invention is also a packaging material used for packaging of a pillow package, wherein the packaging material is intermittently disposed along a transport direction and extends in a transverse direction, A folding part forming scheduled area disposed adjacent to the seal part forming scheduled area, and the sealing part forming scheduled area is formed by sealing the both ends of the packaging material after making the packaging material cylindrical. The region for forming the folded portion is a region for forming a folded portion in which a part of the packaging material in the vicinity of the seal portion is folded inward along the conveying direction with heat sealing. The wrapping material is characterized in that a fold along the conveying direction is intermittently formed in at least a part of a region where the seal portion formation scheduled region and the folded portion formation scheduled region overlap.

  According to such a configuration, it is possible to form a pillow package having a good aesthetic appearance that is folded at an accurate position without causing a positional shift of the packaging film. Moreover, since a fold is not visually recognized from an external appearance, the aesthetics of a package can be made favorable. Moreover, even if it is a case where printing is given to the side surface of a package, the printing etc. can prevent that it becomes a visual defect.

  (8) Further, in the present invention, the packaging material has a body part formation scheduled region that is intermittently arranged along the transport direction and extends in the transverse direction, and the body part formation scheduled region is accommodated by an object to be packaged. A region for forming a main body portion to be formed, and the folds are formed in a region that is to be a side surface of the main body portion that is continuous with the folding portion, of the main body portion formation planned region of the packaging material. It is a packaging material as described in said (7) characterized by the above-mentioned.

  (9) The packaging material according to (7) or (8), wherein the crease is formed intermittently along the longitudinal direction and wound into a roll shape. It is.

  (10) The present invention is also a packaging method characterized by pillow packaging using the packaging material according to any one of (7) to (9) above.

  According to such a configuration, it is possible to form a pillow package having a good aesthetic appearance that is folded at an accurate position without causing a positional shift of the packaging film. Moreover, since a fold is not visually recognized from an external appearance, the aesthetics of a package can be made favorable. Moreover, even if it is a case where printing is given to the side surface of a package, the printing etc. can prevent that it becomes a visual defect.

  (11) The present invention also heats the center seal portion provided by superposing and heat-sealing both side end portions along the first direction of the packaging film, and both end openings along the second direction of the packaging film. A top seal portion provided by sealing, a main body portion in which an object to be packaged is accommodated, and a fold in which a part of the packaging film near the top seal portion is folded inward along the first direction. A wrapping body including a fold, and at least a part of the fold is provided with a fold along the first direction, and a side of the main body continuous with the fold is provided with the fold. It is a pillow package characterized by not being formed.

  (12) The pillow package according to (11), wherein the fold is formed at an end of the folded portion on the top seal portion side.

  According to the present invention, while forming a gusset portion and forming a fold for top sealing, the side fold is not conspicuous when the product is packaged, and the visibility and aesthetics of the printed matter on the side are good. A crease forming device, a pillow packaging machine, a packaging material, a packaging method, and a pillow packaging body for obtaining a pillow packaging body can be provided.

It is the schematic of the pillow packaging machine which concerns on embodiment of this invention. (A) It is an external appearance perspective view of a pillow package, (b) It is a side view of a pillow package. (A) It is an external appearance perspective view of a crease formation apparatus, (b) It is a front view of a crease formation apparatus, (c) It is a top view of a packaging film. It is an external appearance perspective view of a top seal apparatus. (A) It is a top view of a packaging film, (b) It is a side view of a pillow packaging body.

  Hereinafter, with reference to drawings, the composition of pillow packing machine 1 concerning the embodiment of the present invention is explained. FIG. 1 is a schematic view of a pillow packaging machine 1, and FIG. 2 is a view showing a pillow packaging body. In addition, in this figure and each subsequent figure, one part structure is abbreviate | omitted suitably and drawing is simplified. And in this figure and each subsequent figure, the magnitude | size, shape, thickness, etc. of a member are exaggerated suitably and expressed.

  The pillow packaging machine 1 shown in FIG. 1 is used in a line for sequentially packaging articles XA1 such as food and daily necessities with a packaging film YA1. This pillow packaging machine 1 includes an article supply device 2, a film supply device 3, a packaging machine body 4, a control unit (not shown), and the like.

  Each part of the pillow wrapping machine 1 is comprehensively controlled by the control unit. The control unit includes a CPU, a RAM, a ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and various programs are executed to realize various functions. The RAM is used as a work area for the CPU. The ROM stores a basic OS and programs executed by the CPU.

  The article supply device 2 conveys the article XA1 at regular intervals and sequentially conveys the article XA1 to the downstream packaging machine body 4. This article supply apparatus 2 is constituted by a finger conveyor, for example. Specifically, the article supply device 2 includes a conveyance surface (not shown) having a slit, a side guide (not shown) for guiding the article XA1 on the conveyance surface from the side, a driving sprocket 5, and a driven member. Sprockets (not shown), an annular chain 6 running over the sprockets, a plurality of fingers 7 attached to the chain 6 at equal intervals, and a servo motor (not shown) as a power source (Omitted).

  The drive sprocket 5 is rotated by the drive of the servo motor. The driven sprocket rotates in conjunction with the driving sprocket as the chain 6 travels. The chain 6 travels so as to circulate by the rotation of the driving sprocket 5. The plurality of fingers 7 protrude upward from below the conveyance surface via the slits. The plurality of fingers 7 travel on the conveying surface by the travel of the chain 6. Accordingly, the plurality of fingers 7 push the article XA1 on the transport surface and send it out to the packaging machine body 4.

  The film supply device 3 continuously supplies the packaging film YA1 to the downstream packaging machine body 4. The film supply apparatus 3 includes an original fabric shaft 8, a servo motor (not shown), and the like. The original fabric shaft 8 holds the original fabric roll YB1 rotatably. The original fabric shaft 8 rotates when power is applied to the servo motor, and rotates the original fabric roll YB1 being held. Thereby, the packaging film YA1 is fed out (stretched) from the original fabric roll YB1. In addition, as a method of feeding out the packaging film YA1 from the original fabric roll YB1, instead of adopting the original fabric driving method as described above, a feed roller is separately provided, and the feed roller is moved to draw out the packaging film YA1. A driving method may be adopted.

  A crease forming apparatus 100 is disposed on the downstream side of the film supply apparatus 3. The crease forming apparatus 100 includes a pair of rollers 101a and 101b and rotating shafts 102a and 102b, and forms a crease in a predetermined section while transporting the packaging film YA1 continuously transported from the raw roll YB1. Then, the packaging film YA1 is supplied to the bag making machine 14 installed on the downstream side. The crease forming apparatus 100 will be described in detail later.

  The guide rollers 9a and 9b appropriately change the conveyance direction of the packaging film YA1 fed out from the original fabric roll YB1 and guide it to the packaging machine body 4 side.

  The packaging machine body 4 wraps the article XA1 supplied from the article supply device 2 with the packaging film YA1 supplied from the film supply device 3. Specifically, the packaging machine body 4 includes a bag making device 14, a pinch roller 15, a center seal device 16, a first transport device 17, an upper restraining device 18, and a top seal device (end seal device) 30. And a second transfer device 20.

  The bag making device 14 forms the packaging film YA1 supplied from the film supply device 3 into a cylindrical shape so that both end edges in the width direction overlap each other. In addition, the bag making device 14 supplies the article XA1 supplied from the article supply device 2 to the packaging film YA1 that is manufactured in a cylindrical shape. As a result, the article XA1 is wrapped in the packaging film YA1 formed into a cylindrical shape. That is, the bag making device 14 functions as a bag making device that forms the tubular film by bending the packaging film YA1 in the width direction.

  The pinch roller 15 sandwiches and polymerizes both end edges of the packaging film YA1 that overlap each other (a region where the center seal portion CE1 (see FIG. 2) is to be formed), and imparts conveying force to the both end edges.

  The center seal device 16 includes a pair of bar sealers 16a and a press roller 16b. The center seal device 16 heats both ends of the packaging film YA1 polymerized by a pair of bar sealers 16a. Then, the center seal device 16 performs center sealing by pressing both ends of the heated packaging film YA1 with a press roller 16b, thereby forming a center seal portion CE1 (see FIG. 2). That is, the center seal device 16 performs center seal on the packaging film YA1 formed in a cylindrical shape downstream of the bag making device 14. Note that a rotary center seal device that heats the center seal portion with a pair of rollers or a plurality of rollers may be used.

  The first transport device 17 transports the center-sealed cylindrical packaging film YA1 along with the article XA1 wrapped in the packaging film YA1 on the transport surface (reference numeral omitted) toward the top seal device 30. . The first transport device 17 expands and contracts the transport surface in the transport direction in accordance with the box motion of the top seal device 30. In addition to the box motion, a rotary or linear reciprocating top seal device may be used.

  The upper restraining device 18 is disposed above the first transport device 17 and restrains the article XA1 transported to the first transport device 17 from above with the packaging film YA1. Thereby, the article XA1 is conveyed while maintaining the horizontal state.

  The top seal device 30 has a top seal (end seal, horizontal seal) in the width direction of the packaging film YA1 (direction crossing the traveling direction, direction crossing the packaging film YA1) for each pitch according to the length of the article XA1. And cut. Thereby, pillow package ZA1 is manufactured. That is, the top seal device 30 performs sealing and cutting in the width direction at a predetermined interval on the center-sealed packaging film YA1.

  The top seal device 30 has a pair of upper and lower top sealers 30a and 30b and a gusset claw 71, and is a so-called box motion type, and a pair of top sealers 30a and 30a disposed vertically with a cylindrical packaging film YA1 interposed therebetween. 30b moves along a predetermined trajectory while maintaining the state in which the seal surfaces face each other, and performs top sealing and cutting in the width direction of the film for each pitch according to the length of the article. The film part (top seal part TO1) to be sealed and cut by the top seal device 30 is a predetermined position between the front and rear articles XA1. The gusset claw 71 is driven to reciprocate inward in synchronism with the movement of the top sealers 30a, 30b of the top seal device 30.

  In addition, the top seal device 30 is provided with a predetermined position on both sides in the traveling direction in the vicinity of the top-sealed portion of the cylindrical packaging film YA1 before (or at the same time) applying the top seal to the cylindrical packaging film YA1. The folding position is pushed inward by the gusset claw 71 to fold, and the folding portion 85 is formed. In the present embodiment, the fold line L is provided in at least a part of the folding position of the packaging film YA1, and the folded portion 85 can be formed by folding at an accurate position without causing a positional shift or the like. The crease L will be described in detail later.

  With reference to FIG. 2, the pillow package ZA1 of the present embodiment will be described. The pillow package body ZA1 includes a center seal portion CE1, a top seal portion TO1, a folded portion (gazette portion) 85, and a main body portion 80.

  The center seal portion CE1 is provided by superposing and heat-sealing both side edges along the first direction (the same direction as the transport direction) of the strip-shaped packaging film YA1 so that the packaging film YA1 has a cylindrical shape.

  The top seal part TO1 is provided by thermally sealing both end openings along the second direction (direction intersecting (orthogonal) with the transport direction) of the cylindrical packaging film YA1.

  The main body 80 is secured to accommodate the article XA1, and has a substantially rectangular parallelepiped (substantially cubic) shape in this example. Here, the main body 80 is illustrated as an example in which creases are formed at the four corners to form a substantially rectangular parallelepiped (substantially cubic) shape, but a shape in which the creases are not formed at the four corners of the main body 80 (for example, substantially cylindrical) Shape).

  In this example, the main body 80 has a front surface 81f and a back surface 81b, and a side surface 82 therebetween. Hereinafter, the front surface 81f and the back surface 81b are surfaces that are continuous with a surface that is pressurized and heated to apply a top seal (a surface that contacts the seal surface), and the surface on which the center seal portion CE is formed is the back surface 81b, The opposite surface of the back surface 81b will be described as a front surface 81f, and the side surface between the back surface 81b and the front surface 81f will be described as a side surface 82.

  The folding part 85 is formed by folding a part of the packaging YA1 film in the vicinity of the top seal part TO1 inward along the first direction (extending direction of the center seal part CE1). More specifically, the folding portion 85 has a surface (surface between the top seal portion TO1 and the side surface 82) that is continuous with the side surface 82 of the main body portion 80 along the first direction in the vicinity of the top seal portion TO1. It is formed by being folded inward along the first direction (extending direction of the center seal portion CE1) at the center position in the direction (thickness between the front surface 81f and the back surface 81b).

  In the present embodiment, a crease L along the first direction is provided in at least a part of the folding portion 85. The fold line L is provided only at the end part of the fold part 85 on the top seal part TO1 side and the top seal part TO1, and the crease L is formed on the side surface 82 of the main body part 80 continuous with the fold part 85 along the first direction. Not provided.

  When the fold 85 is formed, the fold L is pushed by the gusset claw 71 and folded, so that the fold can be formed at an accurate position.

  And as shown in the figure (b), when it becomes pillow package ZA1, the crease L of the top seal part formation plan area 110 is completely folded in the top seal part TO1 by formation of the top seal part TO1. It is. Moreover, in the figure (b), although it has shown as the continuous line as the crease L (section in which it is formed) for convenience of explanation, the folding part 85 will be in the state (it shows with a broken line) where the packaging film YA1 was folded. Therefore, the crease L formed in a part of the fold-part formation scheduled region 111 is hardly visible from the appearance, or only a part is visible.

  On the other hand, since the crease L is not formed on the side surface 82 of the main body 80, even if the printing P is applied to the side surface 82 as shown in FIG. Can be prevented. Moreover, since the crease L is not formed in the side surface 82 of the main-body part 80, the beauty | look of the pillow package ZA1 can be made favorable.

  Next, with reference to FIG. 3, the crease forming apparatus 100 for forming the crease L will be described. FIG. 4A is a perspective view showing an outline of the crease forming apparatus 100 of the present embodiment, and FIG. 4B is a front view of the crease forming apparatus 100 as viewed from the carrying direction. FIG. These are the top views of packaging film YA1 of this embodiment for demonstrating the formation area of the fold L. FIG.

  The crease forming apparatus 100 of the present embodiment shown in FIGS. 4A and 4B is disposed between the original fabric roll YB1 and the bag making machine 14, and is continuously conveyed from the original fabric roll YB1. A crease L is formed while the film is conveyed, and the packaging film YA1 is supplied to the bag making machine 14 installed on the downstream side (see FIG. 1).

  The crease forming apparatus 100 includes, for example, at least a pair of rollers 101a and 101b and rotating shafts 102a and 102b. One roller 101a is provided with a convex portion 103 on a part of the peripheral surface, and the other roller 101b is provided with a groove 104 fitted to the convex portion 103 on a part of the peripheral surface. The rotation shaft 102a extends in the transverse direction of the packaging film YA1 (direction intersecting (orthogonal) with the conveyance direction) and rotatably holds the roller 101a. The rotating shaft 102b extends in the transverse direction of the packaging film YA1 (direction intersecting (orthogonal) with the conveying direction) and rotatably holds the roller 101b. The pair of rollers 101a and 101b sandwich the packaging film YA1 at a predetermined timing, and intermittently form creases L along a conveyance direction in a predetermined region of the packaging film YA1.

  As shown in FIG. 5A, the packaging film YA1 conveyed to the crease forming apparatus 100 is a belt-like film, but is made into a cylindrical shape by being guided to the bag making device 14 on the downstream side. A three-dimensional (substantially rectangular parallelepiped) package having a front surface 81f, a back surface 81b, and both side surfaces 82 is obtained (see FIG. 2).

  That is, as shown in FIG. 4C, the belt-shaped packaging film YA1 is formed in a cylindrical shape later, when the center seal portion CE1, the top seal portion TO1, the main body portion (front surface 81f, It has a back surface 81b, two side surfaces 82), and a region to be a fold-in portion 85.

  Specifically, the packaging film YA1 includes a top seal portion formation planned region 110 extending in a transverse direction (width direction) intersecting (orthogonal) with the transport direction, and a main body portion formation planned region 112. The top seal portion formation scheduled region 110 is a region for forming the top seal portion TO1 by heat-sealing the opening at both ends after forming the packaging film YA1 into a cylindrical shape. This is a region for forming the main body 80 to be accommodated. The top seal portion formation scheduled area 110 and the main body portion formation scheduled area 112 are intermittently and repeatedly arranged along the transport direction. The main body portion formation scheduled region 112 is a region for forming the main body portion 80 in which an article to be packaged is accommodated, and is a part of the back surface 81b along the transverse direction from the end side along the longitudinal direction of the packaging film YA1. A part of the rear surface formation planned area 112c, the side surface formation planned area 112b to be the side surface 82 on one side, the front side formation planned area 112a to be the front side, the side surface formation planned area 112b to be the other side surface 82, and the back surface 81b. The back surface formation planned area 112c is arranged. Moreover, the center seal part formation plan area | region 113 which will become the center seal part CE1 is arrange | positioned at the both ends along the longitudinal direction of packaging film YA1.

  The folding portion formation scheduled region 111 is a region for forming a folding portion 85 in which a part of the packaging film YA1 in the vicinity of the top seal portion TO1 is folded inward along the conveyance direction in accordance with the heat sealing of the top seal portion TO1. It is intermittently arranged along the transport direction and the transverse direction adjacent to the top seal portion formation scheduled region 110. The folding part formation scheduled area 111 is an area between the side surface forming scheduled area 112b and the top seal part forming scheduled area 110 provided along the transport direction (first direction).

  The crease forming apparatus 100 according to the present embodiment forms a crease L along the transport direction in at least a part of the top seal portion formation planned region 110 adjacent to the fold portion formation planned region 111. Of these, the fold line L is not formed in the side surface formation planned region 112b (the region scheduled to be the side surface 82 of the main body 81 continuous to the folding portion 85). That is, the crease forming apparatus 100 intermittently forms the creases L along the transport direction in at least a part of the top seal portion formation scheduled area 110 that is continuous with the side face formation scheduled area 112b of the packaging film YA1.

  In the present embodiment, as shown in FIG. 5B, the crease L extends over the entire transport direction of the top seal portion formation scheduled area 110 continuous with the side surface formation planned area 112b. It is formed so as to reach a part of the folding portion formation scheduled region 111 adjacent to the region. The crease L is brazed by the crease forming apparatus 100 so that the crease L is folded into a valley (so as to be a valley fold) (see FIG. 5B).

  In this embodiment, although not shown, another crease forming device is provided. The other crease forming device forms a continuous crease LL along the conveying direction for partitioning the back surface 81b, the side surface 82, and the front surface 81f, as indicated by the alternate long and short dash line in FIG. The fold line LL is brazed by another fold forming device so that the fold line LL is folded into a mountain (so as to be a mountain fold).

  Next, the operation of the crease forming apparatus 100 will be specifically described. The crease forming apparatus 100 is provided on the drawing path of the belt-shaped packaging film YA1 from the raw fabric roll YB1 to the bag making machine 14. The crease forming apparatus 100 includes a pair of rollers 101a and 101b disposed with the packaging film YA1 interposed therebetween as shown in FIG. 1A, and a rotational force is applied to one of the rollers 101a by a drive mechanism 105. It is like that.

  The drive mechanism 105 may be the drive motor itself or a mechanism for transmitting power from a separately provided drive motor. In any case, the roller 101a can be driven to rotate intermittently, rotates once at a predetermined timing, sandwiches the packaging film YA1 with the other roller 101b, and intermittently folds in a predetermined section. Form. Further, while the roller 101a is stopped, a predetermined space is formed between the pair of rollers 101a and 101b, and the packaging film YA1 can be moved smoothly.

  When the packaging film YA1 is guided to the bag making machine 14, the operation timing of the roller 101a is over the entire transport direction of the top seal portion formation scheduled area 110 continuous with the side face formation planned area 112b, and the top seal portion formation is performed. Control is performed so as to reach a part of the fold formation formation planned region 111 adjacent to the planned region and form a fold L of the valley fold.

  For example, when the distance from the roller 101a to the bag making device 14 is known and the moving speed of the packaging film YA1 is known, the crease L (for example, the center position) formed by the crease forming device 100 is used as the control. The elapsed time to reach 14 is known. Therefore, by calculating backward from the supply timing of the article XA1 from the article supply device 2 (see FIG. 1), the fold forming device 100 obtains and executes the timing for forming the crease L in a predetermined section of the packaging film YA1. Can be done. Further, the control standard is not limited to that based on the supply timing of the article XA1 as described above, and the film portion where the preceding fold line L is formed based on the formation of the fold line L is the bag making machine. At the same time, the article XA1 can be supplied from the article supply device 2 to the bag making device 14.

  The configuration of the other crease forming apparatus that forms the continuous crease LL is the same as that of the crease forming apparatus 100 except that the brazing direction (valley fold, mountain fold) is different.

  Next, with reference to FIG. 1 and FIG. 4, the packaging method of the pillow package of this embodiment is demonstrated. FIG. 4 is an external perspective view showing an extracted portion of the top seal device 30 that forms the folding portion 85.

  As shown in FIG. 1, the film supply device 3 continuously supplies the packaging film YA1 to the downstream packaging machine body 4. The crease forming device 100 disposed on the downstream side of the film supply device 3 (between the film supply device 3 and the packaging machine main body 4) is configured to fold L while conveying the packaging film YA1 continuously conveyed from the raw roll YB1. And the packaging film YA1 is supplied to the bag making machine 14 installed on the downstream side. The crease L extends over the entire conveyance direction of the top seal portion formation scheduled region 110 that is continuous with the side surface formation planned region 112b, and reaches a part of the folding portion formation planned region 111 adjacent to the top seal portion formation planned region. (See FIG. 3C), for example, so as to be a valley fold. Although not shown, the other crease forming devices arranged on the upstream side or the downstream side of the crease forming device 100 partition the back surface 81b, the side surface 82, and the front surface 81f along the conveyance direction of the packaging film YA1. The continuous creases LL are formed to be, for example, mountain folds.

  On the other hand, the article XA1 supplied from the article supply apparatus 2 moves forward on the conveyance path as the finger 7 moves.

  The bag making device 14 contacts (polymerizes) both side edge portions (center seal portion formation scheduled region 113) with each other while allowing the belt-like packaging film YA1 to pass through, and also makes a bag on the tubular packaging film YA1. To do. The article XA1 is inserted into the bag making machine 14 and conveyed downstream.

  The center seal device 16 heats the center seal portion formation region 113 with a pair of bar sealers 16a, and presses the heated center seal portion formation region 113 with a press roller 16b to perform center seal.

  The top seal device 30 pushes inward folding portions 85 that are continuous with both side surfaces 82 in the advancing direction inward with a gusset claw 71 at predetermined pitches in accordance with the length of the article XA1. In addition to folding (folding) at the folding position, the substantially center position of the folded portion is sandwiched from above and below by the top sealers 30a and 30b, and after top sealing in the width direction of the film, cutting is performed.

  Specifically, as indicated by the two-dot chain line in FIG. 4, the top sealers 30a and 30b move closer to each other from the reference position and sandwich the cylindrical packaging film YA1 from above and below to contact the sealing surface. The film part is pressurized and heated at a predetermined pressure. Both the top sealers 30a and 30b move forward along the moving direction of the tubular packaging film YA1 while maintaining the state in which they are close to each other and sandwich the tubular packaging film YA1 as described above. The moving speed at this time is equal to the moving speed of the cylindrical packaging film YA1. When the cylindrical packaging film YA1 is held between the pair of top sealers 30a and 30b and moved by a predetermined distance, both the top sealers 30a and 30b move away from each other and in the direction opposite to the moving direction of the cylindrical packaging film YA1. Move to the reference position.

  These upper and lower top sealers 30a and 30b are respectively attached to sealer mounts (not shown) arranged above and below them, and move together with the upper and lower sealer mounts. Both side surfaces of the upper and lower sealer mounts are connected to a known cam mechanism (not shown), and the upper and lower top sealers 30a and 30b are revolved by receiving the rotational force of a drive motor (not shown) of the cam mechanism. To do. Further, instead of using the cam mechanism in this way, a plurality of drive motors such as a drive motor for moving the top sealers 30a and 30b up and down and a drive motor for moving forward and backward are provided, and each of these drive motors is provided. The top sealers 30a and 30b can be revolved by operating at an appropriate timing.

  In addition, the top seal device 30 has a predetermined folding region formation planned area 111 in the vicinity of the top-sealed portion of the cylindrical packaging film YA1 before (or at the same time) the top sealing of the cylindrical packaging film YA1. Are folded inward by the gusset claw 71 to form a folded portion 85.

  The gusset claw 71 is driven to reciprocate inward as indicated by arrows in FIG. 4 in synchronization with the movement of the top sealers 30a and 30b of the top seal device 30 by a driving force transmission means such as a link mechanism. The driving force is taken out from the rotating shaft of the cam mechanism that rotationally drives the top sealers 30a and 30b.

  That is, although not shown in the drawings, the cam mechanism of the top sealers 30a and 30b is provided with a swing lever that converts the rotary motion into a reciprocating swing rotary motion. Then, the output end of the swing lever and the gusset claw 71 are mechanically linked by an appropriate link mechanism so that the reciprocating swing motion of the swing lever is converted to a linear reciprocating motion and transmitted to the gusset claw 71. I have to. Thereby, the top part of cylindrical packaging film YA1 is isolate | separated from the subsequent by passing the top seal apparatus 30, and pillow packaging body ZA1 is manufactured. The top seal device 30 may be a rotary type.

  In the present embodiment, a crease L is provided at the folding position (at least a part thereof) of the folding portion 85 of the packaging film YA1. That is, as shown in FIG. 3C, the crease L extends over the entire conveyance direction of the top seal portion formation planned area 110 and is a part of the folding portion formation planned area 111 adjacent to the top seal portion formation planned area 110. It is formed to reach the part. The crease L is brazed so that the crease L becomes a valley and is folded inward.

  The gusset claw 71 contacts the fold line L or the vicinity thereof and pushes the packaging film YA1 inward. As a result, the top seal portion formation planned region 110 and the fold portion formation planned region 111 are folded along the crease L at an accurate position.

  In this state, heat sealing is performed by the top sealers 30a and 30b, so that the top seal part TO1 and the folding part 85 are folded at an accurate position without causing a positional shift of the packaging film YA1, and the like has a good appearance. A pillow package can be formed.

  In addition, since the crease L is not formed on the side surface 82 of the main body 80, even if the printing P or the like is applied to the side surface 82, the printing P or the like can be prevented from being visually inferior. Further, since the fold L is not formed on the side surface 82 of the main body 80, the top seal portion TO1 is completely folded inside, and the folded portion 85 is also folded inward. It becomes almost invisible. For this reason, the aesthetics of pillow package ZA1 can be made favorable (refer FIG.2 (b)).

  5A and 5B are diagrams showing another example of the formation position of the fold line L, where FIG. 5A is a top view of the packaging film YA1, and FIG. 5B is a side view of the pillow packaging body ZA1. As shown in FIG. 6A, the fold line L may be formed only in the top seal portion formation planned region 110 adjacent to the fold portion formation planned region 111 (only in the top seal portion formation planned region 110). Good.

  According to such a configuration, the crease L is completely folded into the top seal portion TO1 by forming the top seal portion TO1. That is, when it becomes the pillow package body ZA1, the folding portion 85 is in a state where the packaging film YA1 is folded (indicated by a broken line), but the fold line L cannot be visually recognized from its appearance. That is, the printing P and the like applied to the side surface 82 are good as in the case of FIG. 2, but since the crease L is not visually recognized from the appearance, the appearance of the package ZA1 can be made better.

  In the above-described embodiment, the case where the fold line L is formed when the packaging film YA1 fed out from the raw roll YB1 in which the fold line L is not formed passes through the crease forming apparatus 100 is illustrated. However, the present invention is not limited thereto, and in the manufacturing process of the packaging film YA1, a crease L as shown in FIGS. 3 (c) and 5 (a) is intermittently formed along the longitudinal direction of the packaging film YA1, and this is formed. It is good also as what carries out pillow packaging using the original fabric roll YB1 wound up in roll shape. That is, the fabric roll YB1 of the pillow packaging machine 1 shown in FIG. 1 has the folds L as shown in FIG. 3 (c) and FIG. 5 (a) already formed intermittently. YA1 is supplied and packaged.

  In this case, the crease forming apparatus 100 shown in FIG. 1 is unnecessary, but another crease forming apparatus for forming the fold LL for folding the main body 80 may be provided here. Further, as the original fabric roll YB1, in addition to the fold line L, a fold line LL for folding the main body 80 may already be used.

  The crease L may be provided over the entire folding part 85 (between the top seal part TO1 and the side surface 82) along the first direction.

  3 (c) and 5 (a), the crease L is a continuous crease L in one section of the top seal portion formation planned region 110 (and a part of the fold portion formation planned region 111). Further, it may be formed intermittently in the one section, that is, so that one crease L indicated by a solid line in FIGS. 3C and 5A is divided into a plurality of sections.

  Further, the other fold lines LL shown in FIG. 3C and FIG. 5A need not be formed.

  When the packaging film YA1 is plain (no printing), the article XA1 may be supplied in accordance with the crease L formed on the packaging film YA1. In this case, the length (distance) of the packaging film YA1 from the roller 101a to the bag making device 14 and the cut pitch (bag length) of the packaging body ZA1 are known, and are calculated backward from the position of the product supplied from the article supply device 2. By doing so, the timing for forming the crease L in the predetermined section of the packaging film YA1 of the crease forming apparatus 100 can be obtained and executed.

  Further, in the above-described embodiment, the fold line L is formed on the packaging film YA1 by the clamping pressure generated between the rollers 101a and 101b of the crease forming device 100. However, the clamping pressure depends on the material and thickness of the packaging film YA1. In the case where the crease L cannot be made sufficiently and surely only by using only the heating means, it is desirable to use a heating means in combination.

  Further, in the above-described embodiment, the pair of rollers 101a and 101b of the crease forming device 100 is configured such that the convex portion 103 and the groove 104 are provided in part of the peripheral surface, but the convex portion 103 is provided over the entire circumference. The crease L may be formed by bringing one roller 101a provided with a contact with the other roller 101b provided with the groove 104 at a predetermined timing via the packaging film YA1. In this case, the crease L having an arbitrary length can be formed by changing the contact time of the pair of rollers 101a and 101b.

  Further, the crease forming device 100 has a crease forming member (for example, a V-shaped shape along the transport direction of the packaging film YA1 on the lower surface with respect to the packaging film YA1 that is stopped during the stop period of the packaging film YA1 that is intermittently transported. Reciprocating a forming die set including a forming convex die provided with a crease forming blade and a corresponding forming concave die having a V-shaped crease forming groove on the upper surface, and heating means as required) The crease L may be formed. In this case, a hand mechanism (accumulation mechanism) is provided, and the center seal device 16 and the top seal device 30 of the pillow wrapping machine 1 are continuously operated by paying out the surplus packaging film YA1 accumulated in the hand mechanism. You may do it.

  Further, the crease forming apparatus 100 may be of a box motion type that forms the crease L in synchronization with the packaging film YA1 in which the crease forming member is continuously conveyed.

  <Modification>

  Further, the crease forming apparatus 100 may be structured such that the position in the transverse direction of the packaging film YA1 that forms the crease L can be adjusted according to the size of the article XA1. In this case, as the crease forming means, for example, the same device as that known from Japanese Utility Model Publication No. 7-23361 can be used. Two pairs of rollers (101a, 101b) are arranged along the axial direction of the rotating shaft (transverse direction of the packaging film YA1). The type of each roller pair is determined so that a valley fold is formed at the center of one side forming the gusset. Moreover, it is good also as a structure which forms the fold L reliably by providing two rollers 101b and pressing the same film site | part which forms the fold L twice. Furthermore, the position in the transverse direction may be adjusted by individually moving each roller pair forming each fold line L that is arranged vertically (aligned in the transverse direction of the packaging film YA1) in FIG. Alternatively, each roller pair may be moved and adjusted relatively simultaneously.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea thereof. That is, in the above embodiment, the position, size, length, shape, material, orientation, and the like of each component can be changed as appropriate.

  For example, although the case where the cam is driven by the motor in the above embodiment is illustrated, the present invention is not limited to this, and various power sources such as an air cylinder, a hydraulic cylinder, an electric or a magnetic solenoid can be used. Of course, an operation in which the seal body approaches / separates can be used as a power source, and a desired operation may be obtained by combining this with a cam or gear mechanism.

DESCRIPTION OF SYMBOLS 1 Packaging machine 2 Article supply apparatus 3 Film supply apparatus 4 Packaging machine main body 14 Bag making machine 16 Center seal apparatus 30 Top seal apparatus 80 Main body part 81f Front surface 81b Rear surface 82 Side surface 85 Folding part 100 Crease forming apparatus 110 Top seal part formation plan area 111 Folded portion formation scheduled region 112 Main body portion formed planned region 113 Center seal portion formed planned region L Crease TO1 Top seal portion CE1 Center seal portion YA1 Packaging film YB1 Original fabric roll ZA1 Packaging

Claims (12)

A crease forming device for forming a crease in a packaging film that is continuously conveyed during packaging of a pillow package,
The packaging film is intermittently arranged along the transport direction, and the seal part formation scheduled region extending in the transverse direction;
A folding portion forming planned region disposed adjacent to the seal portion forming planned region;
Have
The seal part formation scheduled area is an area for forming a seal part by heat-sealing both end openings after making the packaging film cylindrical,
The folding part formation scheduled area is an area for forming a folding part in which a part of the packaging film in the vicinity of the sealing part is folded inward along the conveying direction with heat sealing,
Intermittently forming a fold along the conveying direction in at least a part of the seal part formation scheduled area adjacent to the folding part formation scheduled area;
A crease forming device. Forming the fold also in at least a part of the fold-formation scheduled region;
The crease forming apparatus according to claim 1. The packaging film is intermittently arranged along the transport direction, and has a main body formation scheduled region extending in the transverse direction,
The main body portion formation scheduled region is a region for forming a main body portion in which an article to be packaged is accommodated,
Of the main body part formation scheduled area of the packaging film, do not form the fold in the area that is to be the side surface of the main body part continuous to the folding part,
The crease forming apparatus according to claim 1 or 2, characterized in that A pair of rollers provided with grooves and protrusions that fit into each other on a part of the peripheral surface;
A rotating shaft extending in a direction parallel to the transverse direction of the packaging film and rotating the pair of rollers, respectively.
Forming the fold with the packaging film sandwiched between the pair of rollers at a predetermined timing;
The crease forming device according to any one of claims 1 to 3, wherein The fold forming position in the transverse direction of the packaging film can be changed,
The crease forming device according to any one of claims 1 to 4, wherein A crease forming device according to any one of claims 1 to 5,
A bag-making machine for making a continuous bag-shaped packaging film into a cylindrical shape;
A center seal device that seals the polymerization end of the packaging film formed into a cylindrical shape;
A pillow wrapping machine, comprising: a top seal device that is disposed downstream of the center seal device and seals and cuts both end openings of the tubular packaging film in the width direction of the packaging film. A packaging material used for packaging a pillow package,
The packaging material is intermittently arranged along the conveyance direction, and a seal portion formation scheduled area extending in the transverse direction;
A folded portion formation planned region disposed adjacent to the seal portion formation planned region,
The seal part formation scheduled area is an area for forming a seal part by heat-sealing both end openings after making the packaging material cylindrical,
The folding part formation scheduled area is an area for forming a folding part in which a part of the packaging material in the vicinity of the sealing part is folded inward along the conveying direction in accordance with heat sealing,
A fold along the transport direction is intermittently formed in at least a part of the region where the seal portion formation planned region and the folding portion formation planned region overlap.
A packaging material characterized by that. The packaging material is disposed intermittently along the conveying direction, and has a main body forming scheduled region extending in the transverse direction,
The main body portion formation scheduled region is a region for forming a main body portion in which an article to be packaged is accommodated,
The folds are not formed in a region that is to be a side surface of the main body portion that is continuous with the folded portion among the main body portion formation planned region of the packaging material.
The packaging material according to claim 7. The crease is intermittently formed along the longitudinal direction, and is wound into a roll.
The packaging material according to claim 7 or claim 8, wherein: Pillow wrapping using the packaging material according to any one of claims 7 to 9,
A packaging method characterized by the above. A center seal portion provided by superposing and heat-sealing both end portions along the first direction of the packaging film;
A top seal portion provided by heat-sealing both end openings along the second direction of the packaging film;
A main body containing a packaged item;
A folded portion in which a part of the packaging film in the vicinity of the top seal portion is folded inward along the first direction;
A pillow package comprising:
At least a part of the folding part is provided with a fold along the first direction,
The folds are not provided on the side surface of the main body portion that is continuous with the folding portion,
A pillow package characterized in that. The fold is formed at an end of the fold portion on the top seal portion side.
The pillow package according to claim 11, wherein:

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