JP2012201406A - Refill container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a standing pouch which can be manufactured in an ordinary bag making line, can secure a pouring nozzle having an extremely large cross-section of a spout, resulting in being applicable to contents with high viscosity, and can be furthermore filled using a normal filling device.SOLUTION: In a refill container, one laminate having a base material and a sealant layer is folded having the sealant layer inside, so that a folded portion, a surface laminate, and a rear surface laminate are formed, and the fringe thereof is sealed. A front part of the folded portion forms the pouring nozzle for pouring out the contents with the surface laminate, the rear surface laminate, and a pouring nozzle sealing portion, and a rear part of the folded portion is cut and open to form an opening for filling the contents. A top folded portion and a bottom folded portion are formed by folding the surface laminate forming the pouring nozzle such that the surface laminate is parallel with a ridge line of the folded portion. The top folded portion and the bottom folded portion are provided to face each other.

Description

  The present invention relates to a standing pouch with a spout formed of a flexible packaging material for storing a refill content for refilling a container such as a bottle, and a spout for facilitating pouring of the refill content. The present invention relates to a refill container provided.

  In recent years, refill products that store liquid or granular products such as shampoos and detergents as contents in pouches and refill them into separate containers at the time of use are increasing.

  As a pouch containing the contents for refilling existing, a pouch formed of a flexible packaging material in which two sheets of synthetic resin film sheets are stacked and the open part around the sheet is heat sealed to form a seal part. There is. Such a pouch often has a configuration in which a spout for contents is arranged near the corner of the upper seal portion or in the center of the upper portion.

  In such an existing pouch, a spout is formed at a place where the front and back film sheets are sealed in a flat shape. The spout formed in such a seal portion has a surface where the opening portion is likely to close and the contents are difficult to pour, especially when the width and diameter of the spout are narrow and the shape is long. There was a problem that was easy to do.

  The spout of the flexible packaging bag described in Patent Document 1 is made in order to solve such a problem that the spout is likely to be blocked, and the upper side is obtained by folding one laminated resin film in half. In order to prevent clogging of the spout and to increase the cross-sectional area of the spout.

  According to the spout of the soft packaging bag described in Patent Document 1, compared with the conventional spout where the upper and lower ends of the spout are formed by the seal portion, the blocking prevention effect and the spout speed are equivalent. Although it was improved to some extent, it was still not sufficient for highly viscous contents.

  The pouch with a gusset folding spout described in Patent Document 2 is intended to drastically increase the cross-sectional area of the pouring nozzle portion by making the pouring nozzle portion a gusset folding structure.

  The flexible bags described in Patent Documents 3 and 4 are both flexible by forming a folding part on the top side of the bag so that the spout is opened by the elastic force of the folding part when opened. It is a sex bag.

  The flexible bags described in Patent Documents 3 and 4 are designed so that the spout is opened at the time of pouring, thereby preventing the sheet from adhering and allowing the liquid of the contents to flow out without leaving a single drop. It is a thing.

JP 2008-18991 JP 2010-228786 A JP-A-4-15956 JP-A-4-215957

  The pouch with a gusset folding spout described in Patent Document 2 is another sheet that constitutes the gusset portion of the spout, in addition to the front and back materials and the bottom tape that are necessary for manufacturing a normal standing pouch. A film is required, and an unwinding device for unwinding this film must be prepared separately. For this reason, there is a problem in that it cannot be produced in a normal standing pouch bag making line. In addition, the structure in which the pouring nozzle portion is formed by two planar top seal portions still includes the problem that the films constituting the pouring nozzle portion adhere to each other and the opening is blocked. In particular, this problem sometimes occurred at the final stage of extraction.

  Since the flexible bag described in Patent Documents 3 and 4 is provided with a folding portion over the entire length of the top side, the lower portion of the dispensing nozzle is provided in providing an opening for filling the contents. Therefore, it is necessary to leave the recess in an unsealed state as an opening for filling. For this reason, there is a problem in that it cannot be applied to a normal filling machine in which a filling nozzle is inserted from above the bag and a very special filling device is not used.

  The problem to be solved by the present invention is that a pouring nozzle having a very large pouring outlet cross-sectional area can be manufactured in a normal bag making line without using special plastic parts as the pouring nozzle. Therefore, the present invention proposes a standing pouch that can be applied to a highly viscous content and can be filled with a normal filling device.

As a means for solving the above problems, the invention according to claim 1 is a refill container comprising a laminate having at least a base material and a sealant layer, wherein one laminate is placed inside with the sealant layer inside. Bend to form the folded part, the main body surface laminate, and the main body back laminate, and then fold the other laminate with the sealant layer outside to form the bottom tape. In a refill container having a standing pouch shape that is inserted between the bodies and sealed at the periphery, the front half of the bent portion includes the main body surface laminate, the main body back laminate, and the dispensing nozzle seal portion. The second half of the bent portion is cut open to form a content filling opening, and the tip of the pour nozzle is a pour nozzle tip seal. The spout is formed by cutting along the planned opening line, and the body surface laminate forming the spout nozzle is folded so as to be parallel to the ridgeline of the bent portion. It is a refill container characterized in that the formed upper folding part and lower folding part are provided so as to face each other.

  The invention according to claim 2 is characterized in that the scheduled opening line is a half-cut line provided on the outer surface of the main body surface laminate and / or the main body back laminate. Refill container.

  Moreover, invention of Claim 3 embossed the said extraction nozzle peripheral part of the said main body surface laminated body and / or a main body back surface laminated body, The Claim 1 or 2 characterized by the above-mentioned. Refill container.

The refill container according to the present invention bends one laminate with the sealant layer inside to form a folded portion, a body surface laminate, and a body back laminate, and the first half of the folded portion is a body surface laminate. Since the pouring nozzle for pouring out the contents is formed together with the body and the main body back surface laminate and the pouring nozzle seal portion, there is no seal portion on the top side of the pouring nozzle, and the bent portion is a laminate. Since it always tries to open due to the elasticity of the flow path, the flow path is unlikely to be blocked at the time of pouring.

  In addition, the main body surface laminate that forms the pouring nozzle is folded so as to be parallel to the ridge line of the folding portion, and the upper folding portion and the lower folding portion are provided so as to face each other. In some cases, the upper and lower folding parts are unfolded to open the pouring nozzle, and a flow passage having a large cross-sectional area is formed. For this reason, even a highly viscous content can be poured out smoothly.

  Furthermore, since the latter half of the bent portion is cut open to form the content filling opening, the content can be easily filled with a normal filling device.

  When the planned opening line is a half-cut line provided on the outer surface of the main body surface laminate and / or the main body back surface laminate, the opening operation is facilitated.

  In addition, when embossing is performed on the periphery of the pouring nozzle of the main body surface laminate and / or the main body back laminate, the main body surface laminate and the main body back laminate are difficult to adhere. The outflow at the time of taking out becomes smooth, and the liquid residue due to adhesion can be prevented especially at the final stage of the pouring.

FIG. 1 is a schematic plan view showing an embodiment of a refill container according to the present invention. FIG. 2A is a schematic cross-sectional view showing the XX ′ cross section of the dispensing nozzle portion of the refill container shown in FIG. 1, and FIG. 2B is a state where the dispensing nozzle portion is expanded. It is the cross-sectional schematic diagram which showed. FIG. 3 is a schematic plan view showing another embodiment of the refill container according to the present invention. 4A is a schematic cross-sectional view showing a YY ′ cross section of the dispensing nozzle portion of the refill container shown in FIG. 3, and FIG. 4B is a state in which the dispensing nozzle portion is expanded. It is the cross-sectional schematic diagram which showed. FIG. 5 is a schematic plan view showing another embodiment of the refill container according to the present invention.

The refill container according to the present invention will be described in detail below with reference to the drawings.
FIG. 1 is a schematic plan view showing an embodiment of a refill container according to the present invention. FIG. 2A is a schematic cross-sectional view showing the XX ′ cross section of the dispensing nozzle portion of the refill container shown in FIG. 1, and FIG. 2B is an exploded view of the dispensing nozzle portion. It is the cross-sectional schematic diagram which showed the state.

  A refill container (1) according to the present invention is a refill container composed of a laminate having at least a base material and a sealant layer, wherein one laminate is folded with the sealant layer inside, and a folded portion (4 ), The main body surface laminate (2) and the main body back laminate (3), and the other laminate is folded with the sealant layer outside to form the bottom tape (5). It is a refill container having a standing pouch shape that is inserted between 2) and the main body back surface laminate (3) and sealed at the periphery.

  The first half of the bent portion (4) includes a main body surface laminate (2), a main body back surface laminate (3), and a pouring nozzle seal portion (12), and a pouring nozzle (15) for pouring out the contents. Forming.

  The second half of the bent portion (4) is cut open to form a content filling opening (c), and the tip of the pouring nozzle (15) is sealed by the pouring nozzle tip seal portion (13). The spout is formed by cutting along the planned opening line (14).

  In the refill container (1) according to the present invention, as shown in FIG. 2 (A), the main body surface laminate (2) forming the pouring nozzle (15) is parallel to the ridgeline of the bent portion (4). The upper fold part (10) and the lower fold part (11), which are formed by folding in such a manner, are provided so as to face each other.

  In the embodiment shown in FIGS. 1 and 2, in the upper folding part (10), the main body surface laminate (2) is once folded inward and then in the lower folding part (11), this time it is folded outward. . As a result, the upper folding part (10) and the lower folding part (11) are arranged so as to face each other. In FIG. 2, the upper folding part (10) and the lower folding part (11) are arranged so as to be symmetric with respect to the center line of both of them, but it is not always necessary to be exactly vertically symmetric.

  Since the upper and lower folding parts are sandwiched and fixed between the extraction nozzle tip seal part (13) and the point seal part (6), they do not expand before opening, but the extraction nozzle (15) As shown in FIG. 2 (B), when the tip of is cut off along the planned opening line (14) and the dispensing of the contents begins, it expands and expands to a large area. (17) is formed. As a result, it is possible to quickly dispense, and even a highly viscous content can be smoothly dispensed.

  FIG. 3 is a schematic plan view showing another embodiment of the refill container (1) according to the present invention. 4A is a schematic cross-sectional view showing a YY ′ cross section of the dispensing nozzle portion of the refill container (1) shown in FIG. 3, and FIG. 4B shows the dispensing nozzle portion. It is the cross-sectional schematic diagram which showed the expanded state.

  In the embodiment shown in FIGS. 3 and 4, the main body surface laminate (2) is once folded outward in the upper folding part (10), and is now folded inward in the lower folding part (11). . As a result, the upper folding part (10) and the lower folding part (11) are arranged so as to face each other. In FIG. 4, the upper folding part (10) and the lower folding part (11) are arranged so as to be symmetrical with respect to the center line of the both, but it is not always necessary to be exactly vertically symmetrical.

  In the embodiment shown in FIG. 1 and FIG. 2 and the embodiment shown in FIG. 3 and FIG. 4, the folding directions of the upper folding part (10) and the lower folding part (11) are reversed. There is no big difference in effect.

  The content filling opening (c) is formed by cutting open the latter half of the bent portion (4). Usually, in an actual production line, the bent portion (4) is formed by continuously feeding a single laminated body wound in a coil shape and continuously bending it. Since the upper folding part (10) and the lower folding part (11) are also continuously formed in the same manner, in order to form the content filling opening (c), it is the uppermost part of the folding part (4). It is necessary to cut off from the ridge line part to just below the lower folding part (11). For this reason, the filling opening (c) is positioned lower than the bent portion (4).

The scheduled opening line (14) in front of the dispensing nozzle tip seal portion (13) is a virtual line indicating the opening position, but the main body surface laminate (2) and / or the main body back laminate (3). By using the half-cut line (a) provided on the outer side surface, smoother opening is possible. As a method of forming a half cut line, there are a method using a blade and a method using a laser. The half cut line is not limited to one, and a plurality of lines may be provided in parallel.

  An opening knob (16) is provided below the dispensing nozzle tip seal portion (13) to facilitate the opening operation. Further, by providing an opening notch (b) at the lower part of the planned opening line (14), it becomes easier to trigger opening. The opening notch (b) may be V-shaped, U-shaped, or an I-shaped notch that is a simple cut.

FIG. 5 is a schematic plan view showing another embodiment of the refill container according to the present invention.
The embodiment shown in FIG. 5 is characterized in that embossing (d) is applied to the periphery of the pouring nozzle (15) of the main body surface laminate (2) and / or the main body back surface laminate (3). And By providing the embossing (d), it is possible to prevent the main body surface laminate (2) and the main body back laminate (3) from adhering to each other due to the surface tension of the contents, particularly in the final stage of pouring. It has the effect of allowing all items to be poured out.

  The embossing (d) may be provided before the main body surface laminated body (2) and the main body back surface laminated body (3) are formed by bending one laminated body or after the folding. You may form two sheets at a time after folding. The shape may be convex outward or convex inward. Moreover, you may provide in any one of a main body surface laminated body (2) and a main body back surface laminated body (3), and you may provide in both. There are no particular restrictions on the shape, but attention should be paid to the depth, because if the depth is too deep, the strength of the laminate is impaired.

  As the most preferable combination of embossing (d), convex embossing on the inside is provided on either the front or back, or on both the front and back.

  As a method for forming the embossing, there are a vacuum forming method, a vacuum / pressure forming method, a pressing method using male and female embossed plates, and the like.

  As a structure of the laminated body used for the refill container which concerns on this invention, the laminated body normally used for a flexible packaging bag can be used. As the substrate layer, paper, metal foil or synthetic resin film consisting of one layer or several layers is used. For example, low density polyethylene resin (LDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (LLDPE), polypropylene resin (PP), polyolefin resin such as polyolefin elastomer, polyethylene terephthalate resin (PET), polyester resins such as polybutylene terephthalate resin (PBT), polyethylene naphthalate resin (PEN), cellulose resins such as cellophane and cellulose triacetate (TAC), polymethyl methacrylate (PMMA) resin, ethylene- Vinyl acetate copolymer resin (EVA), ionomer resin, polybutene resin, polyacrylonitrile resin, polyamide resin, polystyrene resin (PS), polyvinyl chloride resin (PVC), polyvinylidene chloride Resin (PVDC), polycarbonate resin (PC), fluorine-based resin, synthetic resin films and paper, such as urethane resin, a metal foil or the like alone or be used in combination. The base material layer includes a printing layer and an adhesive layer as necessary.

  As the paper, high-quality paper, piece art paper, coated paper, cast coated paper, imitation paper, and the like can be used. It is also effective to use paper from the viewpoint of environmental considerations. However, when paper is used, the depth of embossing (d) is limited.

As the sealant layer, polyolefin resin is generally used. Specifically, low density polyethylene resin, medium density polyethylene resin, linear low density polyethylene resin, ethylene / vinyl acetate copolymer, ethylene / α-olefin are used. An ethylene resin such as a copolymer, a polypropylene resin such as a homopolypropylene resin, a propylene / ethylene random copolymer, a propylene / ethylene block copolymer, and a propylene / α-olefin copolymer are used. In addition, a multilayer film in which these resins are combined may be used.

  Specific examples of the structure of the laminate include a film composed of PET / printing layer / adhesive layer / stretched polyamide resin film (ONY) / adhesive layer / LLDPE, ONY / adhesive layer / LLDPE, ONY / Adhesive layer / ONY / adhesive layer / LLDPE, paper / LDPE / aluminum foil / LDPE, paper / LDPE, and the like. As an alternative to the aluminum foil, a transparent gas barrier film using an inorganic oxide vapor deposition layer may be used.

Next, the manufacturing method of the refill container which concerns on this invention is demonstrated.
In order to manufacture the refill container (1) shown in FIG. 1, the length required for the upper and lower folding parts (10) and (11) is approximately twice the length corresponding to the height of the container. A laminate that is slit to a width with added thickness is prepared. The laminate is continuously supplied with the sealant layer surface on the inside, and is folded at the folding part (4) using a triangular plate to form the body surface laminate (2) and the body back laminate (3), and the body surface Upper and lower folding parts (10) and (11) are formed in the laminate (2). Separately prepared bottom tape (5) is folded in half with the sealant layer on the outside, and the necessary bottom punch hole processing (18) is applied, then inserted between the front and back laminates of the main body, and the side seal portion ( 7) A bottom seal portion (8), a dispensing nozzle seal portion (12), a dispensing nozzle tip seal portion (13), and a point seal portion (6) are formed.

  Individual containers formed continuously are cut separately, and further cut into a predetermined outer shape to remove unnecessary portions. At this time, the second half of the bent portion (4) after the point seal (6) is cut and removed to form the content filling opening (c).

  As described above, the refill container according to the present invention can be implemented simply by adding a folding device for forming the upper and lower folding parts to a normal standing pouch forming line, and requires extensive modification. And not.

DESCRIPTION OF SYMBOLS 1 ... Refill container 2 ... Main body surface laminated body 3 ... Main body back surface laminated body 4 ... Bending part 5 ... Bottom tape 6 ... Point seal part 7 ... Side seal part 8 ... Bottom seal part 10 ... Upper folding part 11 ... Lower folding part 12 ... Pumping nozzle seal part 13 ... Pumping nozzle tip seal part 14 ... Scheduled opening line 15 ...・ Pouring nozzle 16 ... Opening knob 17 ... Pouring channel 18 ... Bottom punch hole processing a ... Half cut line b ... Opening notch c ... Content filling opening d ... Embossing

Claims (3)

  A refill container comprising a laminate having at least a base material and a sealant layer, wherein one laminate is folded with the sealant layer inside to form a bent portion, a body surface laminate, and a body back laminate, Another laminate is folded with the sealant layer on the outside to form a bottom tape, inserted between the main body surface laminate and the main body back laminate and sealed at the periphery to refill. In the container, the front half of the bent portion forms a pouring nozzle for pouring the contents together with the main body surface laminate and the main body back laminate and the pouring nozzle seal portion, and the latter half of the bent portion is It is cut open to form an opening for filling the contents, and the tip of the pouring nozzle is sealed by the pouring nozzle tip seal, and is cut along the planned opening line. An upper fold portion and a lower fold portion, which form a spout and are formed by folding the main body surface laminate forming the pouring nozzle so as to be parallel to the ridge line of the fold portion, are opposed to each other. A refill container characterized in that it is provided.   The refill container according to claim 1, wherein the planned opening line is a half-cut line provided on an outer surface of the main body surface laminate and / or the main body back laminate.   The refill container according to claim 1 or 2, wherein an embossing is performed on a peripheral portion of the pouring nozzle of the main body surface laminate and / or the main body back laminate.

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