JP6161362B2 - Method for manufacturing pouch container with spout, and pouch container with spout - Google Patents

Description

  The present invention relates to, for example, a method for manufacturing a pouch container with a spout in which a spout is mounted on a pouch container made of a resin film, and a pouch container with a spout manufactured thereby.

  Conventionally, a pouch container with a spout having a self-supporting property is known, for example, from Patent Document 1 below. As shown in FIGS. 14 and 15 (a) to 15 (c), the pouch container SP with a spout has an upper end portion and a lower end portion of a pair of body sheet portions P11 and P12 whose both side edges are heat-sealed with a predetermined width. A spout S is attached to the top sheet portion P2 of the pouch container P in which the top sheet portion P2 and the bottom sheet portion P3 are respectively formed. Here, the top sheet portion P2 is also called a top gusset sheet, and the bottom sheet portion P3 is also called a bottom gusset. In FIG. 14 and FIG. 15, the heat-sealed portion is shown as a stippled portion.

  In the pouch container P, the upper edge portions of the body sheet portions P11 and P12 and the both side edges of the lower end portion are not heat sealed with each other, and the peripheral edge portion of the top surface sheet portion P2 is folded outward. The body sheet portions P11 and P12 are heat-sealed at the respective upper edges, and the bottom sheet portion P3 is folded inward from the lower side of the body sheet portions P11 and P12, and the peripheral edge portion thereof is The body sheet parts P11 and P12 are heat-sealed at the periphery of the lower end part. Further, as shown in FIG. 15 (b), notches c that match each other in a folded state are formed on both side edges of the bottom sheet portion P3. The side edges at the lower ends of the partial sheet portions P11 and P12 are partially heat sealed.

  Further, the spout S is filled when the pouch container P is filled with contents such as fluid or jelly-like food or medical products having fluidity, and is opened when the contents are taken out from the pouch container P. The flange portion S2 formed integrally with the cylindrical body portion S1 is heat-sealed and attached to the inner surface of the top sheet portion P2.

  The spout pouch container SP as described above is heat-sealed as shown in FIG. That is, a single packaging material M is folded and formed in a state where the pair of body sheet portions P11 and P12, the top sheet portion P2, and the bottom sheet portion P3 are connected, and is formed in the hole formed in the top sheet portion P2. The spout S is inserted, and the body sheet portions P11 and P12 and the top surface sheet portion P2 are in an upright posture so as to form a substantially T shape. In this state, the body sheet portions P11 and P12 are sandwiched between the side seal bars 21a and 21a from both sides. As a result, the side edges of the body sheet portions P11 and P12 that are the contact portions of the side seal bars 21a and 21a, the side edges of the lower end portions of the body portion sheet portions P11 and P12, and the side edges of the bottom surface seal portion P3 Is heat sealed.

  At the same time, the top seal bar 21b is pressed with the top sheet portion P2 sandwiched between the side seal bars 21a and 21a. Accordingly, the peripheral edge of the top sheet portion P2 is heat-sealed with a predetermined width to the upper edge portions of the pair of body sheet portions P11 and P12, and the flange portion S2 of the spout S is heat-sealed to the top sheet portion P2. Is attached.

International Publication No. 2008/096392

  In the spout pouch container SP manufactured by heat sealing as described above, the upper corners 23 of the side seal bars 21a and 21a do not damage the film material constituting the pouch container P as shown in FIG. For this reason, or because of the manufacturing convenience of the side seal bars 21a, 21a, etc., it is formed as a slight curved surface (or chamfered portion). Therefore, even if the body sheet portions P11 and P12 of the pouch container P are sandwiched between the two side seal bars 21a and 21a and are pressed by the top seal bar 21b from above, the sides of the body sheet portions P11 and P12 are adjacent to each other. It is a part that is not joined to the seal boundary part HS3 between the edge seal part HS1 and the top face seal part HS2 between the upper edge of the body part sheet parts P11 and P12 and the periphery of the top face sheet part P2, or has a low joining strength. A defective seal portion 32 is generated.

  Therefore, in the pouch container SP with a spout that is heat-sealed as described above, as shown in FIG. 17 that is an enlarged view of the A part in FIG. 15, the top sheet part P2 is used as the body sheet part as an additional sealing step. As a state of being folded in the direction along P11, the end portion of the top sheet portion P2 in the width direction of the pouch container P is sandwiched from both sides by a point seal bar to form a rectangular point seal portion 30, which results in a poor seal The sealing of the pouch container P was improved with the joining of the portion 32 being perfect.

  However, in the pouch container SP with a spout having the point seal portion 30 formed as described above, the point seal portion 30 is a top surface seal in consideration of an accuracy error in the pressing position of the point seal bar in an apparatus for manufacturing the spout container SP. It is set so as not to protrude inward (left side in FIG. 17) from the seal corner K of the part HS2. In other words, in the pouch container SP with a spout, the seal corner portion K of the top surface seal portion HS2 remains in a position protruding from the point seal portion 30.

  In this case, when an impact such as a drop is applied to the spout pouch container SP filled with the contents, the top seal portion HS2 peels off starting from the vicinity of the seal corner portion K of the top seal portion HS2. As shown by the arrow 34, the contents sometimes leaked out of the container. This is presumed that stress concentration occurs in the seal corner portion K2 of the top surface seal portion HS2 due to the action of pressure waves generated in the contents when the pouch container SP is dropped, and this causes separation at the seal boundary portion HS3. The

  Accordingly, an object of the present invention is to provide a pouch container with a spout having a top sheet portion to which a spout is attached, in the width direction of the side edge seal portion between the side edges of the trunk sheet portion of the spout container and the top sheet portion. It is to improve or improve the sealing performance at the seal boundary part with the top seal part between the peripheral edge of the end part and the upper edge of the body sheet part, and to suppress or prevent the leakage of the contents when the pouch is dropped. .

The method for manufacturing a pouch container with a spout according to the present invention includes a pair of body sheet portions that are heat-sealed at predetermined widths on both side edges in the width direction, and are continuously provided between the lower ends of the pair of body sheet portions. Manufacturing a pouch container with a spout, comprising: a bottom sheet part; a pouch including a top sheet part connected to upper ends of the pair of body sheet parts; and a spout attached to the top sheet part. A crease line forming step of forming a plurality of crease lines along a feeding direction while feeding a packaging material made of a long resin film, and a spout insertion hole and a joining hole in the packaging material. A hole forming step to be formed; and the packaging material is folded along the crease line to correspond to the pair of body sheet portions, the top sheet portion, and the bottom sheet portion Fold to form the part to be A spout insertion step of inserting the spout through a spout insertion hole formed in a portion corresponding to the top sheet portion, and heat sealing the flange portion of the spout to a portion corresponding to the top sheet portion. The spout sealing step for attaching the spout, the side edges of the parts corresponding to the pair of body sheet parts, and the side edges of the parts corresponding to the pair of body sheet parts and the bottom sheet part The side edge of the portion to be heat-sealed to form a side edge seal portion, and the upper edge of the pair of body portion sheet portions and the peripheral edge of the top surface sheet portion are heat-sealed to form a top surface seal portion A first sealing step and a point for joining a defective seal portion formed at a seal boundary portion of the side edge seal portion and the top seal portion formed in the first seal step. A second seal forming a seal portion, the to valley fold only widthwise end portion of the portion corresponding to the top sheet portion and the sealing boundary as folding position, corresponding to the top sheet portion A third sealing step of heat-sealing side edge upper ends of portions corresponding to the body sheet portion via a pair of the joint holes formed at the width direction end portions of the joint, and substantially bisecting the joint holes And a cutting step of cutting the side edge seal portion at a position into individual pouch containers with spouts.

  In the method for manufacturing a pouch container with a spout according to the present invention, the spout sealing step and the first sealing step may be performed simultaneously.

  Moreover, in the manufacturing method of the pouch container with a spout which concerns on this invention, the said 2nd sealing process and the said 3rd sealing process may be performed simultaneously, or may be performed as another process.

A pouch container with a spout which is another aspect of the present invention is provided in a row between a pair of body sheet parts whose both side edges in the width direction are heat-sealed with a predetermined width, and between each lower end part of the pair of body part sheet parts. A pouch container with a spout, comprising: a pouch including a bottom sheet portion formed; and a pouch including a top sheet portion connected to upper ends of the pair of body sheet portions; and a spout attached to the top sheet portion. A side edge seal portion that is a joint portion between the side edges of the pair of body portion seat portions, and a ceiling that is a joint portion between each upper edge of the pair of body portion seat portions and the peripheral edge of the top surface sheet portion. A seal boundary portion with the face seal portion, and a point seal portion for joining a defective seal portion between the pair of body sheet portions and the top sheet portion is formed on the seal boundary portion. And a pair of the top surface sheet portion in the width direction end portion Notch is formed, or in a separate sealing step when said point seal portion is formed, to each other by only the width direction end portion of the top sheet portion is a valley fold in the width direction at the seal boundary face The side edge upper ends of the trunk sheet portion are heat-sealed via the pair of cutout portions.

According to the method for manufacturing a spouted container according to the present invention, and the spouted pouch container, in each spouted pouch container manufactured by cutting at a position that substantially bisects the joint hole, the width of the top sheet portion In the state where only the direction end portion is valley-folded at the seal boundary portion, the side edge upper end portions of the body sheet portion are heat-sealed through the substantially half cutout portion of the joint hole. Thus, when the contents are filled, the seal boundary portion of the spouted container is maintained in a bent state because the upper end portions of the side edge portions of the trunk seal portion are joined at the upper position thereof, and the seal boundary The end portions in the width direction of the top surface seal portions located on both sides of the portion are pressed against each other. Therefore, even if the pressure applied to the contents by the impact when the spouted container falls or the like acts on the end of the top seal part, the top sheet part and the body part start from the end of the top seal part. It can control that a sheet part exfoliates. Therefore, the leakage of the contents when the spouted container is dropped can be suppressed or prevented.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the pouch manufacturing apparatus with which the manufacturing method of the pouch container with a spout which is embodiment of this invention (henceforth only called a "pouch container" suitably) is implemented. It is a perspective view of a pouch container which is an embodiment of the present invention. It is a top view of the packaging material in which the crease line and the through-hole were formed. It is a figure which shows a mode that a packaging material is folded and a pouch container is formed. FIG. 5 is a view subsequent to FIG. 4 showing a state in which the packaging material is folded to form a pouch container. It is a figure following FIG. 5 which shows a mode that a packaging material is folded and a pouch container is formed. It is a figure following FIG. 6 which shows a mode that a packaging material is folded and a pouch container is formed. It is a figure which shows a mode that a pouch container is heat-sealed by a 1st sealing process, (a) is a side view, (b) is a top view. It is a figure which shows the state after the unnecessary part of the top | upper surface sheet | seat part of a pouch container was excised. It is a longitudinal cross-sectional view which shows the pouch container after a 1st sealing process. It is a figure which shows a mode that a point seal | sticker part is formed in the pouch container connected continuously by the 2nd sealing process. It is BB expanded sectional drawing in FIG. It is (a) top view, (b) front view, and (c) side view which show one pouch container formed by cutting along the planned cutting line. It is a perspective view which shows the conventional pouch container. It is (a) top view, (b) front view, and (c) EE sectional view of a conventional pouch container. It is a figure which shows the 1st sealing process of the conventional pouch container. It is the A section enlarged view in Fig.15 (a).

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, and the like are examples for facilitating the understanding of the present invention, and can be appropriately changed according to the application, purpose, specification, and the like. In addition, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that these characteristic portions are used in appropriate combinations.

  In the following description, the same or similar reference numerals are used for the same components described in relation to the conventional pouch container SP, and redundant descriptions may be omitted with the aid of the same.

  FIG. 1 is a diagram schematically showing an overall configuration of a pouch manufacturing apparatus 10 for manufacturing a pouch container SP with a spout. The pouch manufacturing apparatus 10 includes a reel unit 11 around which a packaging material M, which is a raw resin film, is wound, an accumulator unit 12 that is a buffer mechanism for feeding the packaging material M from the reel unit 11, and a packaging material. A crease line forming unit 13 for forming a crease line in M, a hole forming unit 14 for forming a through hole in the packaging material M by punching, a folding unit 15 for folding the packaging material M along the crease line, and a folded package A spout supply unit 16 that supplies the spout S to the material M and temporarily mounts it, a first joining unit 17 that performs a first sealing process on the packaging material M on which the spout S is temporarily mounted, and a top surface outer shape of the pouch container SP A cutting unit 18 for cutting off unnecessary portions to form a seal, and a second joint unit for locally heat-sealing the seal boundary portion HS3 of the pouch container SP. It comprises a preparative 19, by cutting the packaging material M and a cutting unit 20 which separates the individual pouch package SP.

  FIG. 2 is a perspective view of the pouch container SP of the present embodiment. The pouch container SP of the present embodiment has substantially the same configuration as the above-described conventional pouch container. That is, the pouch container SP includes a pair of body sheet parts P11 and P12 (only one body sheet part P11 is shown in FIG. 2) facing each other and each of the pair of body sheet parts P11 and P12. A top sheet portion P2 that is connected to the upper end portion to form the top surface of the pouch container SP, and a bottom portion of the pouch container SP that is connected to the respective lower end portions of the pair of body sheet portions P11 and P12. A bottom sheet portion P3 and a spout S serving as an entrance for the contents of the pouch container SP are provided.

  A pair of trunk | drum sheet | seat part P11, P12 is mutually joined by the side edge seal part HS1 formed in the both-sides edge of the width direction of the pouch container SP which corresponds to the conveyance direction of the packaging material M. FIG. Each lower end edge part of a pair of trunk part sheet parts P11 and P12 and the peripheral edge of bottom sheet part P3 are joined by bottom seal part HS4. Each upper edge part of a pair of trunk | drum sheet | seat part P11, P12 and the peripheral part of the top | upper surface sheet | seat part P2 are joined by the top | upper surface seal | sticker part HS2. Further, the spout S is mounted with the flange portion S2 being heat-sealed at the center position in the width direction of the top sheet portion P2. Further, notches c1 that coincide with each other in a folded state are formed on both side edges of the bottom sheet portion P3, and at the lower ends of the body sheet portions P11 and P12 through the notches c1. Both side edges are partially joined.

  In these respects, the pouch container SP of the present embodiment has the same configuration as the conventional one described above. However, the present embodiment is different in that the upper side edge portions of the body sheet portions P11 and P12 are heat-sealed with each other via a pair of notches c2 formed in the top sheet portion P2. This difference will be described in detail later.

  The packaging material M used for the pouch container SP of the present embodiment is usually composed of a resin film. This resin film is required to have basic performance as a package, such as impact resistance, wear resistance, and heat resistance. Moreover, since each said seal | sticker part HS1-HS4 is formed by heat seal, heat seal property is also requested | required of the resin film.

  As the resin film, a multilayer sheet having a base film layer and a sealant layer that imparts heat sealability is suitable. When high gas barrier properties and light shielding properties are required, the base film layer and the sealant layer It is preferable to provide a barrier layer between them. In addition, you may provide barrier property to the base film layer itself.

  Here, constituent materials of the base film layer, the sealant layer, and the gas barrier layer are exemplified. In addition, lamination | stacking of these each layer can be performed by the conventional lamination method, for example, the dry lamination by an adhesive agent, the heat lamination which adhere | attaches with a heat | fever by pinching | interposing a heat bonding layer.

  Examples of the film constituting the base film layer include polyester (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), etc. Further, a sealant layer serving as an adhesive layer by heat sealing is used. Examples of the constituting film include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-propylene copolymer (EP), etc. Further, as the barrier layer, a metal thin film such as aluminum, Alternatively, a resin film such as vinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or any synthetic resin film (for example, a base film layer) may be formed of aluminum, aluminum oxide or silica. Inorganic acids such as Such as deposition (or sputtering) films can be exemplified ones.

  Next, with reference to FIGS. 3 to 13, the manufacturing process of the pouch container SP of the present embodiment will be described sequentially.

  FIG. 3 is a plan view of the packaging material M in which crease lines and through holes are formed. First, a plurality of crease lines are formed on the packaging material M delivered from the reel unit 11. In the present embodiment, for example, six crease lines L1 to L6 are formed in parallel to each other along the packaging material delivery direction. Each of the crease lines L1 to L6 can be formed in the crease line forming unit 13 by contacting a thin crease line forming roller while rotating it.

  Here, in the packaging material M in which the crease lines L1 to L6 are formed, a belt-like region from one edge portion (upper edge portion in FIG. 3) to the crease line L1 constitutes the top sheet portion P2 of the pouch container SP. The belt-like region from the crease line L1 to the crease line L3 becomes a portion constituting one body sheet portion P11 of the pouch container SP, and the belt-like region from the crease line L3 to the crease line L5 serves as the bottom sheet portion P3. A belt-like region from the crease line L5 to the other edge becomes a portion constituting the other body sheet portion P12.

  In the present embodiment, a case where a large number of pouch containers SP are manufactured in a row from a single packaging material M will be described. However, a large number can be obtained by cutting a single packaging material in half along the delivery direction. Productivity may be improved by making the pouch containers SP connected in two rows.

  After the crease lines L1 to L6 are formed, a plurality of through holes are formed in the packaging material M by the hole forming unit 14 by, for example, punching. Specifically, circular through holes H serving as spout insertion holes are formed at predetermined intervals in a portion corresponding to the top sheet portion P2. The interval between the through holes H substantially corresponds to the width of the manufactured pouch container SP.

  Further, a pair of through-holes h1 is formed in the portion that becomes the bottom sheet portion P3 in the packaging material M along the planned cutting line CL from which the individual pouch containers SP are separated. This through hole h1 becomes a semicircular cutout c1 when the pouch container SP is cut and separated, and joins the side edges of the pair of body sheet portions P11 and P12.

  Further, in the packaging material M, a pair of through holes (joining holes) h2 are also formed in the top sheet portion P2 along the planned cutting line CL. When the point seal portion 30 is formed in the second joining unit 19 in a state where the widthwise end portion of the top surface sheet portion P2 is folded, the pair of through holes h2 are side edge seals of the trunk portion sheet portions P11 and P12. This is for joining the upper ends of the part HS1 by heat sealing. When each pouch container SP is cut along the planned cutting line CL, the circular through hole h2 is substantially bisected to form a semicircular cutout portion c2 that joins the upper end portions of the side edge seal portion HS1. It will be.

  The pair of through holes h <b> 2 are formed at symmetrical positions with respect to the center line 40 passing through the center of the spout insertion hole H. Thereby, as will be described later, when the widthwise end of the top sheet portion P2 of the pouch container SP is folded in the width direction on the center line 40, the pair of through holes h2 are overlapped. The side edge upper ends of the trunk sheet portions P11 and P12 are exposed through the through hole h2 so as to be joined.

  The pair of through holes h2 may have the same size as the pair of through holes h1 formed in the bottom sheet portion P3 of the pouch container SP, or may have different sizes. The through hole h2 is preferably circular, but may be other shapes such as an ellipse.

  The packaging material M in which the crease lines L1 to L6 and the through holes H, h1, and h2 are formed as described above is folded along the crease lines L1 to L6 when moving to the downstream side and passing through the folding unit 15. As shown in FIG.

  When FIG. 4 is referred, the part used as a pair of trunk | drum sheet | seat part P11, P12 is folded so that it may oppose in the state which pinched | interposed the bottom sheet | seat part P3 folded in two. Moreover, the part used as the top | upper surface sheet | seat part P2 is folded by the crease line L2, and is folded in the state which stood up along one trunk | drum sheet | seat part P11. And the upper end part of the part used as the other trunk | drum sheet | seat part P12 is bend | folded at substantially right angle by the crease line L6, and is made into the state extended along the horizontal direction (for example, horizontal direction).

  Subsequently, the packaging material M is conveyed to the spout supply unit 16. Here, as shown in FIG. 5, the spout S is supplied sideways, and as shown in FIG. 6, the spout S is inserted in the direction of the arrow through the spout insertion hole H formed in the portion that becomes the top sheet portion P <b> 2. . At this time, the main body portion S1 of the spout S protrudes from the portion that becomes the top sheet portion P2 to the opposite side, but the flange portion S2 of the spout S is formed with a larger diameter than the spout insertion hole H, so that the spout is inserted. It will be in the state engaged with the peripheral part of the hole H. FIG.

  As shown in FIG. 7, the packaging material M temporarily attached with the spout S in this way has a portion in which the top sheet portion P <b> 2 becomes a posture along the horizontal direction while moving to the next first joining unit 17. It is folded and opposes each upper part of the part used as trunk | drum sheet | seat part P11, P12 currently bent along the horizontal direction by crease line L2, L6.

  In this state, as shown in FIG. 8A, the packaging material M has the body sheet portions P11 and P12 that are heated by the side seal bars 21a and 21a in the first joining unit 17 from both lateral sides. While being sandwiched, the heated top seal bar 21b descends and the peripheral portion of the top sheet portion P2 and the flange portion S2 of the spout S are sandwiched between the side seal bars 21a and 21a.

  As a result, the side edge seal portion HS1 and the bottom seal portion HS4 are formed by heat sealing by the side seal bars 21a and 21a, and the top seal portion HS2 is formed by heat sealing by the top seal bar 21b, and at the same time, the flange of the spout S The part S2 is heat-sealed and attached to the top sheet part P2.

  At this time, the pouch container SP of the present embodiment has the top sheet portion P2 formed in a substantially octagonal shape. Therefore, as shown in FIG. A square top seal portion HS2 is formed. In addition, as described with reference to FIG. 17, the poor seal portion 32 that is a portion that is not sealed or a portion that is difficult to seal remains in the seal boundary portion HS3 between the side edge seal portion HS1 and the top surface seal portion HS2. . A pair of through holes h2 are formed at symmetrical positions on both sides of the poor seal portion 32.

  Subsequently, the packaging material M is conveyed to the excision unit 18, where a triangular unnecessary portion 41 between the portions that become the top sheet portion P2 of the pouch container SP adjacent in the width direction is sandwiched by the packaging material M. The triangular cutting blades arranged on both sides are swung to perform cutting. As a result, as shown in FIG. 9, when separated, the top sheet portion P2 of the pouch container SP is shaped so as to form a substantially octagonal shape.

  FIG. 10 shows a cross section taken along line FF in FIG. The cross section of the packaging material M at this stage is the same as that of the pouch container described in the related art.

  In the present embodiment, an example in which the shape of the top sheet portion P2 of the pouch container SP is a substantially octagonal shape will be described. However, the present invention is not limited to this, and the top sheet portion is rectangular, hexagonal, or the like. Other polygonal shapes may be used, or other shapes such as a circle, an ellipse, a rhombus, and a trapezoid may be used.

  After the unnecessary part is cut off by the cutting unit 18, the packaging material M is conveyed to the second joining unit 19. In this case, as shown in FIG. 11, the point seal portion 30 (refer to FIG. 17) is locally provided on the seal boundary portion HS <b> 3 including the defective seal portion 32 in a state where the plurality of pouch containers SP are connected by the planned cutting line CL. Form.

  Specifically, both end portions in the width direction of the top sheet portion P2 are bent into a substantially V shape so as to be folded at the poor seal portion 32 using a guide member or the like (not shown). In this state, the heated point seal bar 21c sandwiches the region including the poor seal portion 32 and the pair of through holes h2 from both sides. The BB cross section in FIG. 11 at this time is shown as an enlarged view in FIG.

  As shown in FIG. 12, the width direction end of the top sheet portion P2 is folded at the portion sandwiched between the point seal bars 21c and 21c with the defective seal portion 32 as the fold position. h2 is the overlapping position. Thereby, the upper ends of the side edge portions of the pair of body sheet portions P11 and P12 are pressed and heated through the through holes h2 and are joined to each other by heat sealing. In FIG. 12, a gap is formed between the contact surface of the point seal bar 21 c and the body sheet portions P <b> 11 and P <b> 12, but the resin film used for the packaging material M has a thickness of, for example, 0.00. Since it is as thin as about 15 mm, the upper edge portions of the side edge portions of the trunk sheet portions P11 and P12 can be sufficiently pressed and joined together by being pinched by the point seal bars 21c and 21c. By performing the point seal in this way, the poor seal portion 32 of the pouch container SP is sufficiently joined, and the sealing strength at the seal boundary portion HS3 is improved.

  The packaging material M on which the point seal is applied as described above moves to the cutting unit 20 that is the next station, and is cut along the planned cutting line CL, whereby individual pouch containers SP are separated from the packaging material M. To be separated. Thereby, the pouch container SP of this embodiment is completed.

  FIG. 13 is a (a) top view, (b) front view, and (c) side view showing one pouch container SP in the present embodiment.

  Referring to FIG. 13, the through hole h2 is substantially bisected into a semicircular cutout c2. As described above, the side edge upper end portions 42 of the body sheet portions P11 and P12 are joined to each other through the notch c2. Thereby, since the widthwise end of the top sheet portion P2 is in a state of being folded and folded at the seal boundary portion HS3 (see FIGS. 9 and 12), both sides sandwiching the seal boundary portion HS3. The widthwise end portions of the top surface sheet portion P2 located in the position are maintained in a state where they are pressed against each other. As a result, even if the pressure applied to the contents by an impact such as when the pouch container SP is dropped acts on the end in the width direction of the top surface sheet portion P2, the end in the width direction of the top surface sheet portion P2 is the starting point. It can suppress that peeling arises between the top | upper surface sheet | seat part P2 and trunk | drum sheet | seat part P11, P12. Therefore, the leakage of contents when the pouch container SP is dropped can be suppressed or prevented.

  The pouch container SP of this embodiment and the pouch container shown in FIG. 14 which is a comparative example were filled with contents, and a drop test was performed. In this test, the pouch container SP is dropped from the position of 1 meter in height five times each with the bottom sheet portion P3 facing downward and the trunk sheet portion P11 (or P12) facing downward. The contents were leaked from the point-sealed part. As a result, in the pouch container of the comparative example, the contents leaked out from the point seal part 30, but in the present embodiment, the contents did not leak out, and the effect could be confirmed.

  In addition, the manufacturing method of the spout container according to the present invention is not limited to the above-described embodiment and its modifications, and various changes and modifications within the scope and equivalents described in the claims of the present application are possible. Improvements are possible.

  For example, in the above description, the process of heat-sealing and attaching the spout S to the top surface sheet portion P2 and the heat sealing step of forming the top surface seal portion HS2 on the periphery of the top surface sheet portion P2 have been described. However, it is not limited to this, and may be performed as a separate process.

  Moreover, in the above, the process of performing a point seal on the poor seal portion 32 and the step of heat sealing and joining the side edge upper ends of the body sheet portions P11 and P12 through the through hole h2 are performed simultaneously. However, the present invention is not limited to this and may be performed in a separate process. In that case, first, the point seal portion 30 is formed in the poor seal portion 32 in the same manner as the conventional pouch container described with reference to FIG. 17, and then the end in the width direction of the top surface sheet portion P2 is folded. By heat sealing, the side edge upper ends of the body sheet portions P11 and P12 may be joined to each other through the through hole h2.

  DESCRIPTION OF SYMBOLS 10 Pouch manufacturing apparatus, 11 reel unit, 12 accumulator unit, 13 crease line forming unit, 14 hole forming unit, 16 spout supply unit, 17 1st joining unit, 18 cutting unit, 19 2nd joining unit, 20 cutting unit, 21a , 21a Side seal bar, 21b Top seal bar, 21c Point seal bar, 23 Upper corner (of side seal bar), 30 Point seal part, 32 Seal failure part, 40 Center line, 41 Unnecessary part, 42 Side edge upper end part , C, c1, c2 notch, CL cutting line, H spout insertion hole or through hole, h1, h2 through hole (joining hole), HS1 side edge seal part, HS2 top face seal part, HS3 seal boundary part, HS4 Bottom seal part, K seal corner, L1-L6 crease line, M packaging material, P pouch container, P11, P12 trunk sheet part, P2 top sheet part, P3 bottom sheet part, S spout, S1 body part, S2 flange part, SP pouch container with spout, W width direction, H top and bottom Direction, D Depth direction.

Claims (5)

A pair of body sheet parts whose both side edges in the width direction are heat-sealed with a predetermined width, a bottom sheet part connected between lower ends of the pair of body part sheet parts, and the pair of body sheet A method of manufacturing a pouch container with a spout comprising a pouch including a top sheet portion continuously provided at an upper end portion of the section, and a spout attached to the top sheet portion,
A crease line forming step of forming a plurality of crease lines along the sending direction while sending a packaging material made of a long resin film,
A hole forming step of forming spout insertion holes and bonding holes in the packaging material;
A folding step of folding the packaging material along the crease line to form a portion corresponding to the pair of body sheet portions, a portion corresponding to the top sheet portion, and a portion corresponding to the bottom sheet portion. When,
A spout insertion step of inserting the spout through a spout insertion hole formed in a portion corresponding to the top sheet portion,
A spout sealing step for heat-sealing the flange portion of the spout to a portion corresponding to the top sheet portion and attaching the spout;
Heat seal the side edges of the parts corresponding to the pair of body sheet parts, the side edges of the parts corresponding to the pair of body sheet parts, and the side edges of the part corresponding to the bottom sheet part. Forming a side edge seal portion, and heat-sealing the upper edge of the pair of body sheet portions and the peripheral edge of the top surface sheet portion to form a top surface seal portion;
A second sealing step of forming a point seal portion for joining the seal failure portion formed in the seal boundary portion of the side edge seal portion and the top seal portion formed in the first sealing step;
A pair formed at the end portion in the width direction of the portion corresponding to the top surface sheet portion by valley-folding only the end portion in the width direction of the portion corresponding to the top surface sheet portion with the seal boundary portion as the fold position. A third sealing step of heat-sealing the side edge upper ends of the portion corresponding to the trunk sheet portion through the joint hole;
A cutting step of cutting the side edge seal portion into a separate pouch container with a spout by cutting the side edge seal portion at a position that substantially bisects the joining hole,
The manufacturing method of the pouch container with a spout containing this. In the manufacturing method of the pouch container with a spout of Claim 1,
The method for producing a pouch container with a spout, wherein the spout sealing step and the first sealing step are performed simultaneously. In the manufacturing method of the pouch container with a spout of Claim 1 or 2,
The method for producing a pouch container with a spout, wherein the second sealing step and the third sealing step are performed simultaneously. In the manufacturing method of the pouch container with a spout of Claim 1 or 2,
The method for producing a pouch container with a spout, wherein the second sealing step and the third sealing step are performed as separate steps. A pair of body sheet parts whose both side edges in the width direction are heat-sealed with a predetermined width, a bottom sheet part connected between lower ends of the pair of body part sheet parts, and the pair of body sheet A pouch container with a spout comprising a pouch including a top surface sheet portion continuously provided at the upper end of the portion, and a spout attached to the top surface sheet portion,
A side edge seal portion that is a joint portion between side edges of the pair of body portion seat portions, and a top surface seal portion that is a joint portion between each upper edge of the pair of body portion seat portions and the periphery of the top surface sheet portion. And a seal boundary part with
A point seal portion for joining a seal failure portion between the pair of body portion seat portions and the top sheet portion is formed in the seal boundary portion,
A pair of notches are formed at the widthwise end of the top surface sheet portion, and when the point seal portion is formed or in another sealing step, only the width direction end of the top surface sheet portion is the seal. The side edge upper ends of the body sheet portions facing each other by being valley-folded with the boundary portion being the crease position are heat-sealed via the pair of notches,
Pouch container with spout.

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