Pouch container, its manufacturing method, and bag body used therein

Abstract

To provide a standing pouch that is slim and easy to attach a pouring device.SOLUTION: A pouch container includes a bag body 1 that comprises front and rear films 3, 4 and a bottom film 5, and is, in an intermediate stage prior to attaching a pouring device 2, formed in an upwardly opened state. By forming an outward extension 18 in an upper part of the bag body 1 while setting a body portion of bag body 1 with a sectional area in a same degree as a fixing portion 7 of the pouring device 2, the upper part of the bag body 1 is formed in a size that, in a swelled state, can afford to insert the fixing portion 7 of the pouring device 2 therein. Thus, a slim, standing pouch can be easily manufactured.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention is a pouch container having a synthetic resin dispensing device attached to a bag body. and its manufacturing method and a bag body constituting the pouch container (Intermediate) This is regarding. [Background technology]

[0002] In recent years, for example, as a package for a fluid product such as a liquid drink, shampoo, or jelly-like drink, a laminated film having a high gas barrier property has been used. bag body In the pouch container, the dispensing device is generally made up of a body welded to the bag and a cap that closes the body, and a screw cap is generally used as the cap.

[0003] The bags that make up pouch containers come in two types: one that has front and back films and a bottom film with the edges of the front and back films welded together, and a gusset type in which left and right side films folded into a V shape are placed between the front and back films. The former is called a standing pouch because when the contents are filled, the bottom film expands and the pouch becomes self-supporting.

[0004] In a standing pouch, the edges of the front and back films are welded together, so when filled with contents, the pouch narrows toward the top when viewed from the side, whereas a gusset type pouch maintains its rectangular shape over its entire height when filled with contents.

[0005] In either case, the bag is manufactured in a flat folded state, and when attaching the dispensing device, the bag is inflated and then the lower part of the dispensing device is inserted into the top of it. The upper parts of the front and rear films and the lower part of the dispensing device are then clamped with a high-frequency horn, ultrasonic horn or hot platen, thereby welding (joining) the three together.

[0006] Therefore, the upper part of the bag needs to be large enough that the lower part of the dispensing device can be easily inserted into it when inflated, but this has the problem that it cannot meet the needs of users who want a slimmer bag.

[0007] Regarding this point, Patent Document 1 discloses that in a gusset-type pouch container, the lower part of the dispensing device is inserted between one of the front and rear films and the side film, thereby making it easier to attach the dispensing device while reducing the width of the bag body. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2018-39569 A Summary of the Invention [Problem to be solved by the invention]

[0009] In Patent Document 1, it is said that a gusset-type pouch container can be slimmed down and easily fitted with a pouring device, but since it is difficult to provide a bottom film for the gusset type, a pouch container that is slim yet can stand on its own has not been realized. Therefore, there has been a demand for a technology that can realize a slim form while facilitating the attachment of a pouring device for a pouch container of the type in which the front and rear films are welded together.

[0010] The present invention is intended to meet such demands. [Means for solving the problem]

[0011] The present invention includes various configurations, and typical configurations are specified in each claim. The invention of claim 1 relates to a pouch container, which is "It consists of a bag body and a dispensing device attached to the top of the bag, The bag body has front and rear films whose edges are welded together in an overlapping state. On the other hand, the dispensing device is provided with a synthetic resin body, the lower part of which is a fixing part that fits into the upper part of the bag body, The injection device is disposed between the upper portions of the front and rear films. The fixed part of the main body is pinched. The three are welded together." In this basic configuration, "The bag body has an outward protruding portion that protrudes to the left and right at the upper portion where the fixing portion of the dispensing device fits, and the main body portion, which is the portion below the outward protruding portion, is formed narrower than the upper portion over the entire height with the same left and right width, so that the bag body has a T-shaped shape when viewed from the front, The bag Book The body has the injection device therein. Fixed part The size of the device is difficult or impossible to insert. On the other hand, The left and right ends of the outward protruding portion are welded in advance, and the upper portion of the bag body has a left and right width that allows the fixing portion of the outward protruding portion to be easily inserted with the left and right ends of the outward protruding portion welded in advance, and the upper portion of the bag body on both left and right sides of the fixing portion of the spouting device includes a portion joined by welding of the fixing portion and left and right ends that are joined before the fixing portion is welded. " It has the following characteristics:

[0012] In the present invention, the terms front-back, up-down, left-right, and so on are used to specify directions, but the front-back direction is the overlapping direction of the film, and the up-down direction refers to the side where the dispensing device is attached as the top and the opposite side as the bottom. The left-right direction refers to the left-right direction as seen from the overlapping direction of the film.

[0013] The invention of claim 2 is a preferred embodiment of claim 1, "The bag has a bottom film sandwiched and fixed to the lower part of the front and rear films, and is capable of standing on its own when filled with contents." The structure is as follows.

[0015] Claim 3 The invention relates to a method for manufacturing pouch containers, " A bag formed with front and rear films in an upwardly opening state and a dispensing device main body having a fixing part at its lower part that is inserted into the bag are prepared, the bag is inflated from a flat state, the fixing part of the dispensing device main body is inserted into the upper part, and then the upper part of the front and rear films constituting the bag and the fixing part of the dispensing device main body are welded together. " In this basic configuration, " The bag body has an upper portion into which the fixing portion of the dispensing device main body fits, and the main body portion, which is a portion below the outward protruding portion, is formed narrower than the upper portion over the entire height with the same left and right width, so that the bag body has a T-shaped shape when viewed from the front, The main body of the bag body is of a size such that it is difficult or impossible to insert the fixing part of the dispensing device main body therein, the left and right ends of the outward protruding portion are welded in advance, and the upper portion of the bag body has a left and right width that allows the fixing portion of the outward protruding portion to be easily inserted with the left and right ends of the outward protruding portion welded in advance, After preparing the bag body with the left and right ends of the outward protruding portion welded in advance, the fixing portion of the dispensing device main body is inserted into the upper portion of the bag body, and then the upper portion of the bag body and the fixing portion are welded together, and at the same time, the upper portion of the bag body is joined except for the ends of the outward protruding portions. It has the following characteristics:

[0016] Claim 4 The invention relates to a bag that constitutes a pouch container. That is, the pouch container is formed with an upward opening by front and rear films, and a fixing part of a synthetic resin body of a dispensing device is welded to the upper part, "The upper part of the dispenser into which the fixing part is inserted is formed with outwardly projecting parts that protrude to the left and right, and the main body part, which is the part below the outwardly projecting parts, is formed narrower than the upper part over the entire height with the same left and right width, so that it has a T-shaped shape when viewed from the front, The main body portion is of a size such that it is difficult or impossible to insert the fixing portion of the dispensing device therein, The left and right ends of the outward protruding portion are welded in advance, and the upper portion has a left and right width that allows the fixing portion of the pouring device to be easily inserted with the left and right ends of the outward protruding portion welded in advance. " The structure is as follows.

[0017] In the invention of claim 5, the spouting device body is welded to the bag body having the outward protruding portion by the method of claim 3, Remove the outward protruding part There are In this case, the bag body is Same width The slim shape improves the aesthetic appearance and also reduces the effort required for packaging. Effect of the Invention

[0019] In the present invention, by providing an outward protruding portion only on the upper part of the pouch body, the pouch body can be made slimmer and a spouting device can be easily attached, even though the pouch container has a simple type of pouch body in which the front and rear films are directly welded together. This allows for a wide variety of pouch containers and a wider range of choices for users.

[0020] The bag body may have no bottom film, in which case it can be used in the same way as a tube container, but if it is applied to a standing pouch having a bottom film as in claim 2, it can be used in the same state as a bottle, so the commercial value can be significantly improved. In other words, it can be used to package a variety of contents as a replacement for slim bottles. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a diagram showing a first embodiment, in which (A) is an overall separated front view, and (B) and (C) are partial views showing the installation procedure of the dispensing device. [Diagram 2] 1(A) is a plan sectional view taken along line IIA-IIA in FIG. 1(C), (B) is a front view after filling, (C) is a partially cutaway front view of the first reference example, and (D) is a partially cutaway front view of the second reference example. [Diagram 3] 13A is a front view of a second embodiment, and FIG. 13B is a front view of a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] (1) Structure of the First Embodiment First, the first embodiment shown in Figures 1, 2(A) and (B) will be described. The pouch container is composed of a bag body 1 made of a laminated film and a spouting device 2 attached to the upper end of the bag body 1.

[0024] The bag body 1 is formed in a generally rectangular shape with the top and bottom long when viewed from the front, and the spouting device 2 is attached to the middle part of the left and right of the upper part of the bag body 1. The bag body 1 is made of three films: front and back films 3 and 4 and a bottom film 5, and when the contents are filled, the bottom film 5 spreads out horizontally. Therefore, the pouch container of this embodiment is a standing pouch that can stand on its own on a flat surface such as a table.

[0025] The bottom film 5 is folded in half with the crease facing up and sandwiched between the lower parts of the front and rear films 3, 4, and the left and right side parts of the bottom film 5 and the left and right side parts of the front and rear films 3, 4 are welded together, and the bag body 1 is welded to the front and rear films 3, 4 between the left and right side parts.

[0026] In the figure, the welded areas between the front and rear films 3, 4 are shown with parallel diagonal lines slanting upwards to the right, and the welded areas between the bottom film 5 and the front and rear films 3, 4 are shown with parallel diagonal lines slanting downwards to the left. The areas where the parallel diagonal lines cross and form a cross-hatched pattern are the areas where the front and rear films 3, 4 and the bottom film 5 are welded together. The areas shown with dots as in Figure (C) are the welded locations when the front film 3 is peeled off.

[0027] The dispensing device 2 has a cylindrical body. (Dispensing device body) The main body 6 is composed of a fixing part 8 (the lower part of the dispensing device 2) to which the bag body 1 is welded, and a cylindrical part 9 located above the fixing part 8 and exposed. An upper flange 10 is provided at the lower end of the cylindrical part 9, while a lower flange 11 is provided at the upper end of the fixing part 8. The area between the upper and lower flanges 10, 11 forms a guide tube part 12 which is rectangular in flat cross section.

[0028] As shown in Fig. 2(A), the fixing part 8 is eye-shaped when viewed from the bottom, and the upper and lower flanges 10, 11 are each octagonal, slightly longer in left and right direction when viewed from above. The upper and lower flanges 10, 11 are used in the filling and transporting processes, and the pouch container can be held non-rotatably and slidably by fitting the groove between the upper and lower flanges 10, 11 into a pair of plate-like chutes (ribs) arranged in parallel. The cylindrical part 9 of the main body 6 is formed with a male screw 13 into which the cap 7 is screwed.

[0029] As shown in Fig. 1(B), a pilfer-proof ring 15 is connected to the lower end of the cap 7 via multiple bridges 14. On the other hand, an annular rib 16 that holds the pilfer-proof ring 15 so as not to move upward when the cap is fully screwed in, and a protrusion 17 that holds the pilfer-proof ring 15 so as not to rotate back are formed on the cylindrical portion 9 of the main body 6 of the dispensing device 2. It is noted that the cap 7 does not have to be equipped with the pilfer-proof ring 15.

[0030] The inside of the bag 1 is about the same size as the fixing part 8 of the dispensing device 2. In Fig. 1, the left and right width of the inside of the bag 1, the main body part excluding the upper part, is slightly larger than the left and right width of the fixing part 8 of the dispensing device 2, and although the bag 1 is shown in a flattened state, when the bag 1 is inflated, the inside of the main body part excluding the upper part becomes about the same size as the fixing part 8 of the dispensing device 2.

[0031] Further, outward protrusions 18 are formed on the upper part of the bag body 1, protruding on both the left and right sides. The outward protrusions 18 have a depth that allows the fixing part 8 of the dispensing device 2 to fit loosely, and have an outward protrusion dimension that allows the fixing part 8 of the dispensing device 2 to be inserted with a certain degree of leeway when the upper part of the bag body 1 is inflated, as shown in Fig. 2(A). In this embodiment, the left and right protrusions of the outward protrusions 18 before the dispensing device 2 is attached are End are also welded.

[0032] As shown in Fig. 2(A), the attachment of the dispensing device 2 is performed by inflating the bag body 1, inserting the fixing part 8 of the dispensing device 2 into the upper part of the bag body 1, and then clamping the upper parts of the front and rear films 3, 4 with a pair of horns or hot plates. By clamping with the pair of horns or hot plates, the front and rear films 3, 4 are joined to the fixing part 8 of the dispensing device 2, and the front and rear films 3, 4 are joined together at both the left and right sides of the fixing part 8 of the dispensing device 2.

[0033] In more detail, the installation process of the pouring device 2 is as follows: the bag body 1 is intermittently transported in a flattened state down a chute toward the jig; it is set in the jig in a flattened position and in a vertically long position, and then inflated from both the left and right sides by the pressing action of pushers; the fixing part 8 of the pouring device 2 is then inserted into the upper part; and the bag body 1 and the pouring device 2 are joined by clamping them with a pair of front and rear horns or heating plates.

[0034] Now, if the bag body 1 is straight and does not have an outward protruding portion 18, when the bag body 1 is slim, when the bag body 1 is inflated and then the fixing portion 8 of the dispensing device 2 is inserted, the fixing portion 8 hits the opening edge of the bag body 1 and becomes impossible to insert, and as a result, it frequently happens that the bag body 1 and the dispensing device 2 cannot be joined together.

[0035] In contrast, in this embodiment, since the outward protruding portion 18 is provided, the fixing portion 8 of the dispensing device 2 is inserted into the upper portion of the bag body 1 with a sufficient margin, even if the main body portion of the bag body 1 in which the contents are filled has a size (cross-sectional area) similar to that of the fixing portion 8 of the dispensing device 2 or is smaller than the fixing portion 8 of the dispensing device 2, the dispensing device 2 can be attached without any trouble. Therefore, a standing pouch with a slim shape can be easily provided.

[0036] (2) Other embodiments In the first embodiment, the spouting device 2 is disposed substantially concentrically with the bag body 1, and the outwardly extending portions 18 are provided on the left and right sides. (C) Shown in First reference exampleIn the embodiment, the spout device 2 is disposed eccentrically on one side in the left-right direction of the bag body 1, and accordingly, the outward protruding portion 18 protrudes only on one side in the left-right direction.

[0037] In this case, as shown by the dotted line, the outward protruding portion 18 may be folded back along a line passing through its base at a crease 19 and fixed to the main body of the bag body 1 with an adhesive or the like. By folding the outward protruding portion 18 back in this manner, the bag body 1 becomes straight, which is aesthetically pleasing and also facilitates handling during boxing, etc. Double-sided adhesive tape or welding can also be used as a fixing means.

[0038] Even when the outward protruding portions 18 are provided on both the left and right sides, it is possible to fold the outward protruding portions 18 forward or backward and fix them. Also, when the outward protruding portions 18 are provided on both the left and right sides, it is possible to make the protruding dimensions of the left and right outward protruding portions 18 different.

[0039] As shown in Figure 2(D) Second reference example In the embodiment, the bag body 1 is in an intermediate stage before the dispensing device 2 is attached, and the outward protruding portion 18 is not joined. In this state, when the main body of the bag body 1 is pressed from the left and right, the upper part also expands as a whole, so there is no problem in inserting the fixing part 8 of the dispensing device 2. In this embodiment, the protruding dimension of the outward protruding portion 18 is made as small as possible, and the dispensing device 2 can be easily joined.

[0040] In addition, this Reference example In this case, the fixing part 8 of the dispensing device 2 can be easily inserted without providing the outward protruding part 18. Therefore, this can be an independent invention. There are no pouch containers on the market that have a neck like a bottle, but by applying this embodiment, the dispensing device 2 can be easily attached to a pouch container that has a thin neck, and after the dispensing device 2 is attached, the outward protruding part 18 can be cut off to realize a thin neck.

[0041] As shown by the dashed line in Fig. 2(D), it is also possible to join the outwardly protruding parts 13 of the front and rear films 3, 4 by welding, while tilting the inner surface 20 of the joint so that it spreads outwardly upward. By forming it in this way, the fixing part 7 of the pouring device 2 can be guided in, so that the protruding dimension of the outwardly protruding part 18 can be made as small as possible.

[0042] As shown in Figure 3(A) Second In this embodiment, the main body of the bag 1 is set to a size smaller than the fixing part 8 of the dispensing device 2. It is a great advantage of the present invention that it can be applied to such a very thin pouch container.

[0043] As shown in Figure 3(B) Third In the embodiment, the outward protrusion 18 is cut off after the spouting device 2 is attached. The cutting off can be performed simultaneously with the attachment, or can be performed as a separate process after the attachment process. In this embodiment, the outward protrusion 18 does not exist in the finished product, which is excellent in terms of aesthetics and handling effort.

[0044] Although the embodiment of the present invention has been described above, the present invention can be embodied in various other ways. For example, the present invention can be applied to a tube-type pouch container that does not have a bottom film 5. In addition, the pouring device 2 does not necessarily have to be a screw cap type, and a hinge cap type or a pull-and-slash type can also be adopted. As disclosed by the applicant in Japanese Patent Application No. 2019-192538, a method of removing the cap by pinching from a direction perpendicular to the axis can also be adopted. [Industrial Applicability]

[0046] The present invention is applicable to pouch containers and is therefore industrially applicable. [Explanation of symbols]

[0047] 1 bag body 2 Dispensing device 3,4 Film 5 Bottom film 6. Main body of the dispensing device (Dispensing device body) 7 Cap 8. Fixed part constituting the lower part of the dispensing device 10,11 Flange 18 Outward protrusion

Claims

1. It consists of a bag body and a dispensing device attached to the upper part of the bag body, The bag body has front and rear films whose edges are welded together in an overlapping state, while the dispensing device has a synthetic resin body whose lower part is a fixed part that fits into the upper part of the bag body; A pouch container in which a fixing portion of a main body of the dispensing device is sandwiched between the upper portions of the front and rear films, and the three are welded together, An outward protruding portion protruding to the left and right is formed at the upper portion of the bag body into which the fixing portion of the spouting device is inserted, and the main body portion, which is a portion below the outward protruding portion, is formed narrower than the upper portion over the entire height with the same left and right width, so that the bag body has a T-shaped shape when viewed from the front, The main body of the bag is of a size such that it is difficult or impossible to insert the fixing part of the dispensing device therein, The left and right ends of the outward protrusion are welded in advance, and the upper part of the bag body has a left and right width that allows the fixing part of the outward protrusion to be easily inserted when the left and right ends of the outward protrusion are welded in advance, and the upper part of the bag body on both left and right sides of the fixing part of the spouting device includes a part joined by welding of the fixing part and left and right ends that are joined before the fixing part is welded. Pouch container.

2. The bag body has a bottom film sandwiched and fixed to the lower part of the front and rear films, and is capable of standing on its own when filled with contents.

2. The pouch container according to claim 1.

3. A configuration in which a bag body formed with front and rear films in an upwardly opening state and a dispensing device main body having a fixed part at its lower part to be inserted into the bag body are prepared, the bag body is inflated from a flat state and the fixed part of the dispensing device main body is inserted into its upper part, and then the upper part of the front and rear films constituting the bag body and the fixed part of the dispensing device main body are welded together, The bag body has an upper portion into which the fixing portion of the dispensing device main body fits, and the main body portion, which is a portion below the outward protruding portion, is formed narrower than the upper portion over the entire height with the same left and right width, so that the bag body has a T-shaped shape when viewed from the front. The main body of the bag body is of a size such that it is difficult or impossible to insert the fixing part of the dispensing device main body therein, the left and right ends of the outward protruding portion are welded in advance, and the upper portion of the bag body has a left and right width that allows the fixing portion of the outward protruding portion to be easily inserted with the left and right ends of the outward protruding portion welded in advance, After preparing the bag body to which the left and right ends of the outward protruding portion have been welded in advance, the fixing portion of the spouting device main body is inserted into the upper portion of the bag body, and then the upper portion of the bag body and the fixing portion are welded together, and at the same time, the upper portion of the bag body is joined to the fixing portion, except for the ends of the outward protruding portion. A method for manufacturing a pouch container.

4. A pouch container bag formed with an upward opening by front and rear films, and a fixing part of a synthetic resin body of a dispensing device is welded to the upper part, An outward protruding portion that protrudes to the left and right is formed at the upper portion where the fixing portion of the pouring device is inserted, and the main body portion, which is the portion below the outward protruding portion, is formed narrower than the upper portion over the entire height with the same left and right width, so that it has a T-shaped shape when viewed from the front, The main body portion is of a size such that it is difficult or impossible to insert the fixing portion of the dispensing device therein, The left and right ends of the outward protruding portion are welded in advance, and the upper portion has a left and right width that allows the fixing portion of the pouring device to be easily inserted with the left and right ends of the outward protruding portion welded in advance. The bag body of a pouch container.

5. A method according to claim 3, characterized in that the dispensing device body is joined to the bag body by the method, and then the outward protruding portion of the bag body is cut off. A method for manufacturing a pouch container.

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