JP2012197110A - Gusset bag and refilling container set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically spread the opening mouth of a refilling gusset bag.SOLUTION: In the gusset bag (1) with a cylindrical portion composed of a packing material containing a metal foil layer, gussets (1f) formed at both sides of the cylindrical portion, a content storage chamber composed of at least two sealing portions (1a and 1g) extended so as to cross both of the gusset portions, and a cutting guide line (1b) set in the vicinity of either of the sealing portions, an elastic tape (21) is attached to a bag wall closer to the content storage chamber than to the cutting guide line. By cutting and opening the gusset bag on the cutting guide line automatically, the opening mouth (1e) is spread by the elasticity of the elastic tape.

Description

  The present invention is a gusset bag for containing contents such as powdered milk and sealing, for example, a gusset bag whose opening is automatically expanded when opened when stored in a refill container, and filling the contents A refill container set in which a gusset bag, a container body into which the gusset bag is inserted, an expansion member that expands an opening of the gusset bag, and an opening / closing lid that opens and closes the opening of the container body .

  Conventionally, a gusset bag 30 filled with a content a such as powdered milk as shown in FIG. 12 (A) and sealed, and a box-type container (FIG. 12B) in which the gusset bag 30 opened as shown in FIG. 3 and FIG. 4), and when the contents a in the gusset bag 30 stored in the box-type container are consumed, a new gusset bag 30 is opened and an empty gusset bag 30 in the box-type container is used. Refillable containers that are exchanged are known.

  In FIGS. 12A and 12B, reference numerals 30a, 30b, and 30c denote a sealing part, a cut line, and an opening, respectively.

  In addition, a bag is known in which a shape holding tape is bonded along the bag mouth and the shape holding tape is bent to hold the bag mouth at a desired angle (see, for example, Patent Document 1). .

  Also, attach an easy-peeling shape-retaining tape so that it faces the mouth of the flat bag, overlap the shape-retaining tapes, close the flat bag, and pull the shape-retaining tapes apart to deform the shape-retaining tape. Thus, a bag is known in which the opening can be held in an open state (see, for example, Patent Document 2).

JP 2005-88893 A Japanese Patent No. 4128089

  In the above refill container, when the gusset bag 30 is formed of a packaging material including a metal foil layer such as aluminum, as shown in FIG. The opening 30c remains almost closed due to the folding of the metal foil layer or the like. For this reason, after putting the opened gusset bag into the box-type container, it is necessary to widen the opening 30c with a finger or the like in order to take out the contents a from the gusset bag 30. Since it contacts the periphery or enters the bag through the opening 30c, it is not hygienic. Moreover, the powdered milk etc. which are the contents a adhere to a finger | toe etc., too.

  Although it is conceivable to hold the bag mouth in a wide open state using a bag with the conventional shape holding tape attached to the bag mouth, in any case, it is necessary to perform an operation to spread the bag mouth with a finger. Therefore, it is difficult to prevent a finger or the like from contacting around the bag mouth or a finger or the like from entering the bag.

  Therefore, an object of this invention is to provide the gusset bag which can solve the said problem.

  In order to solve the above problems, the present invention employs the following configuration.

  In addition, in order to make an understanding of this invention easy, the referential mark of drawing is attached | subjected, but this invention is not limited to this.

  That is, in the invention according to claim 1, the cylindrical portion is formed by the packaging material including the metal foil layer, the gusset portions (1f) are formed on both sides of the cylindrical portion, and the gusset portions (1f) are crossed. A gusset bag (1) in which a content storage chamber is provided by at least two sealing portions (1a, 1g) extending so as to have a planned cut line (1b) in the vicinity of one of the sealing portions (1a) ) In which the elastic tape (21) is attached to the bag wall closer to the contents storage chamber than the planned cut line (1b) so as to cross at least the parts of the gussets (1f) ( 1) is adopted.

  The content (a) can be a dairy product. For dairy products, “Milk”, “dairy products” and “milk or dairy products” in “Ministerial Ordinance on Milk and Dairy Product Component Standards (Milk Ordinance): Ministry of Health and Welfare Ordinance No. 52, December 27, 1951” Foods made mainly of milk, processed milk, milk drinks, fermented milk, ice cream, ice milk, lacto ice, cheese, prepared powdered milk, whole milk powder, skimmed milk powder, condensed milk, etc. This gusset bag can package any dairy product.

  However, the present invention is suitable for a dairy product that is eaten for a long time after the container is opened, and as such a dairy product, a dairy product in a powder form, that is, powdered milk is preferable, and the effect of the present invention can be fully enjoyed. be able to.

  In addition, powdered milk, powdered milk, instant creamy powder, whey powder, buttermilk powder, sweetened powdered milk and the like are included in addition to powdered milk powder, whole milk powder, skim milk powder, and the like.

  As described in claim 2, in the gusset bag according to claim 1, the elastic tape (21) is attached over the entire circumference of the bag wall including both the gusset portions (1f). be able to.

  As described in claim 3, in the gusset bag according to claim 1, the elastic tape (21) is a polyethylene terephthalate tape having a square cross section with a thickness of 100 μm or more and a width of 5 mm or more. can do.

  As described in claim 4, when the gusset bag according to any one of claims 1 to 3 is filled with the contents and sealed, a gusset bag is formed as a package.

  According to a fifth aspect of the present invention, there is provided a bag containing the contents, a container body into which the bag is inserted, and an expansion for expanding the opening of the bag when fitted into the opening of the container body. In a refill container set in which an opening member and an opening / closing lid for opening and closing the opening of the container body are combined, the bag is a gusset bag in which a polygonal opening is formed by opening, and a metal foil layer is formed. A cylindrical portion is formed by the included packaging material, gusset portions are formed on both sides of the cylindrical portion, and a content storage chamber is provided by at least two sealing portions extending so as to cross between both gusset portions, A cutting line is set in the vicinity of one of the sealing parts, and an elastic tape is attached to the bag wall on the content storage chamber side from the cutting line so as to extend at least across both gusset parts, The expanding member is A first guide part that expands each outward notch part while invading into the outward notch part in the opening of the gusset bag stored in the container body when mounted on the opening of the container body; A structure comprising a second guide portion that guides the inner periphery of the opening when the opening member is completely attached to the opening of the container body and expands the opening to a well-formed shape. Is adopted.

  According to the present invention, the cylindrical portion is formed by the packaging material including the metal foil layer, the gusset portion (1f) is formed on both sides of the cylindrical portion, and extends so as to cross between both gusset portions (1f). In the gusset bag (1) in which the content storage chamber is provided by at least two sealing portions (1a, 1g), and the planned cut line (1b) is set in the vicinity of one of the sealing portions (1a), A gusset bag (1) in which an elastic tape (21) is attached to the bag wall closer to the content storage chamber than the planned cut line (1b) so as to cross at least the gusset portions (1f). When the gusset bag (1) is cut and opened on the cut line (1b), the opening (1e) is automatically expanded by the elasticity of the elastic tape (21). Therefore, the contents (a) in the bag can be easily and quickly taken out from the bag and used without spreading the opening (1e) with a hand or a finger.

The gusset bag which concerns on this invention is shown, (A) is a perspective view shown in an unopened state, (B) is a perspective view shown in an opened state. It is a top view of a refill container. FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. It is the perspective view which looked at the expansion member from diagonally upward. It is the perspective view which looked at the expansion member from diagonally downward. It is a top view of an expansion member. FIG. 8 is a sectional view taken along line VIII-VIII in FIG. FIG. 7 is a cross-sectional view taken along line IX-IX in FIG. (A), (B), and (C) are perspective views showing the expanding action of the opening of the gusset bag by the expanding member as viewed obliquely from above. (A), (B), and (C) are perspective views showing the expansion action of the opening of the gusset bag by the expansion member when viewed obliquely from below. The conventional gusset bag is shown, (A) is a perspective view shown in an unopened state, (B) is a perspective view shown in an opened state.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 6, the refill container includes a refill gusset bag 1 in which the contents a are placed, a container body 2 that is a box-type container into which the gusset bag 1 is inserted, and a container. An expansion member 3 that expands the opening 1e of the gusset bag 1 into a more arranged shape when fitted into the opening of the main body 2 and an opening / closing lid 4 that opens and closes the opening of the container main body 2 are provided.

  As shown in FIG. 1 (A), the refill gusset bag 1 has a cylindrical portion formed of a sheet-like packaging material, gusset portions 1f formed on both sides of the cylindrical portion, and both gusset portions 1f. , 1f, a content storage chamber is provided by at least two sealing portions 1a and 1g extending across the space, and a planned cut line 1b is set in the vicinity of one of the sealing portions 1a.

  The gusset bag 1 is made of a packaging material that is a synthetic resin laminate, and a metal foil layer such as an aluminum foil is provided in the laminate to provide gas barrier properties. In this embodiment, the packaging material is a laminate of polyethylene terephthalate having a thickness of 12 μm / polyethylene resin layer having a thickness of 7 μm / aluminum foil having a thickness of 7 μm / polyethylene resin layer having a thickness of 15 μm / polyethylene resin film layer having a thickness of 40 μm. The material is used.

  The sealing portions 1a and 1g are formed by heat sealing and cross between the two gusset portions 1f and 1f in a band shape, whereby the inside of the gusset bag 1 is sealed.

  The planned cut line 1b is not particularly required to be physically formed, but is provided, for example, by engraving a cut perforation in a desired layer in the laminate, or by printing display. .

  As shown in FIG. 1 (A), an elastic tape 21 is provided on the bag wall of the gusset bag 1 over the entire circumference of the bag wall including both gussets 1f and 1f on the content storage chamber side of the cut-out line 1b. It is attached.

  The elastic tape 21 is formed of, for example, polyethylene terephthalate and desirably has a rectangular cross section with a thickness of 100 μm or more and a width of 5 mm or more. As a material of the elastic tape 21, it is also possible to use polyethylene, vinyl chloride, rubber, silicon resin, etc. in addition to polyethylene terephthalate. Further, the cross-sectional shape is not limited to a rectangular cross section, and the size is not limited to the above size.

  The elastic tape 21 is attached to the inner surface or outer surface of the bag wall by heat sealing or an adhesive. The elastic tape 21 is preferably attached to the packaging material before being formed in the gusset bag 1.

  Thus, the gusset bag 1 to which the elastic tape 21 is attached cuts the bag wall on the cut line 1b and removes the sealing portion 1a, as shown in FIG. Will automatically expand the opening. Therefore, the contents a in the bag can be easily and quickly taken out from the bag and used without spreading the opening 1e with a hand or a finger.

  The elastic tape 21 does not necessarily have to be attached over the entire circumference of the bag wall, and may extend at least across the gusset portions 1f and 1f. Thereby, the place of both gusset parts 1f and 1f with a crease can be intensively expanded by the elasticity of the elastic tape 21, and the opening 1e can be opened appropriately.

  The content a is powdered milk that is a dairy product in this embodiment, but may be other.

  The gusset bag 1 is opened when the sealing portion 1a is cut off on the planned cut line 1b as described above at the time of refilling, and as shown in FIG. The opening 1e is automatically opened largely by the elastic action to be restored.

  In the opening 1e, the outward notch portions 1c remain slightly at the initial four corners of the opening, and the inward notch portions 1d remain slightly between each pair of the two pairs of outward notches 1c. Here, the outward notch is a portion in which the fold of the sheet constituting the gusset bag protrudes in a V-shape outside the opening 1e, and the inward notch is the opening of the fold of the sheet constituting the gusset bag It is the part which protruded in the V shape inside 1e.

  The opened gusset bag 1 is stored in the container body 2 in the opened state shown in FIG. Alternatively, after being accommodated in the container body 2, the unsealed state shown in FIG.

  As shown in FIGS. 3 and 4, the container body 2 is formed as a substantially rectangular parallelepiped box-shaped container as a whole including front and rear walls 2a, 2b, left and right walls 2c, 2d, and a bottom wall 2e. The opened gusset bag 1 or the unopened gusset bag 1 can be stored from the opening of the box.

  On the outer periphery of the opening of the container body 2, a fitting protrusion 5, an upper rib 6, and a lower rib 7 are provided in this order from top to bottom. As shown in FIGS. 3 and 4, the fitting protrusion 5 is fitted with the fitting protrusion 8 a of the fitting portion 8 when the fitting portion 8 of the spreading member 3 covers the opening of the container body 2. Is possible. As shown in FIG. 3, the lower rib can contact the lower edge of the fitting portion 8 of the spreading member 3, and the lower rib 7 can contact the lower edge of the fitting portion 9 of the opening / closing lid 4. Is possible.

  A bracket 10 for forming a pair of hinges is provided on the rear wall 2b of the container body 2. As shown in FIGS. 2 and 4, the hinge shaft 11 of the opening / closing lid 4 can be connected to the bracket 10. The hinge comprising the bracket 10 and the hinge shaft 11 can be formed integrally with the container main body 2 and the opening / closing lid 4 by being connected with a thin portion, for example. Further, the hinge can be provided between the spreading member 3 and the opening / closing lid 4.

  As shown in FIGS. 2 to 4, the open / close lid 4 includes a top plate 12 and a fitting portion 9 made up of inner and outer double peripheral walls 9 a and 9 b that hang from the top plate 12.

  As shown in FIGS. 2 to 4, the fitting portion 9 of the opening / closing lid 4 is fitted into the opening of the container body 2 from above the fitting portion 8 of the expanding member 3. That is, when the opening of the container body 2 is closed by the opening / closing lid 4, the fitting portion 8 of the expanding member 3 fitted into the opening of the container body 2 enters between the inner and outer double peripheral walls 9a, 9b, Thereby, the three of the container main body 2, the expansion member 3, and the opening / closing lid 4 are united.

  As shown in FIGS. 5 to 9, the expansion member 3 is formed as a gusset bag opening expansion device separate from the container body 2 and the opening / closing lid 4.

  The expanding member 3 is formed in a frame shape having a size that can match the opening of the container body 2. Then, as shown in FIGS. 2 to 4, the expansion member 3 is covered with the opening of the container body 2 and the fitting portion 9 of the opening / closing lid 4 on the outer peripheral side of the frame. A fitting portion 8 for integrating the container body 2 and the opening / closing lid 4 is provided.

  The inclined wall 13 is lowered from the inner peripheral side of the fitting portion 8 in the expanding member 3, and an annular horizontal wall 14 projects inward from the lower end of the inclined wall 13. An insert to the opening 1e of the bag 1 is provided in a generally funnel shape.

  This insert has first guide portions 15 respectively corresponding to outward notches 1c at the four corners of the opening 1e of the gusset bag 1 at the four corners of the substantially rectangular opening 3a at the center thereof. Between the part 15 and the said horizontal wall 14, it has the 2nd guide part 17 corresponding to the inner periphery of the opening 1e which expanded the gusset bag 1 completely.

  Further, at each center of the two short sides of the opening, there is a relief portion 16 that allows passage of the inward notch portion 1d of the opening 1e when the opening 1e is expanded by the first guide portion 15 as necessary. Provided.

  The lower surface of the escape portion 16 may be a guide portion that moves while being in contact with the inwardly extending notch portion 1d.

  The first guide portion 15 penetrates into each outward notch portion 1c of the opening 1e and the outward notch portion 1c expands. At the same time, the inward notch portion 1d begins to expand. Since the movement of the inward notch portion 1d is not hindered, the opening 1e is smoothly expanded.

  The opening 3a at the center of the insert is slightly smaller than the opening of the opening of the container body 2, and the content a is taken out through this opening.

  When the expanding member 3 is attached to the opening of the container main body 2 in which the opened gusset bag 1 is stored, first, as shown in FIGS. While the first guide portion 15 enters the outward notch portion 1c in the opening 1e of the gusset bag 1, each outward notch portion 1c is expanded simultaneously. As shown in FIGS. 10 (B) and 11 (B), each inward notch portion 1d also tries to expand simultaneously, but the escape portion 16 avoids a collision associated with the movement of the inward notch portion 1d. Subsequently, as shown in FIGS. 10C and 11C, the second guide portion 17 guides the inner peripheral edge of the opening 1e to expand and retain the opening 1e in a well-formed shape. . At the same time, the fitting portion 8 of the expanding member 3 is fitted to the opening of the container body 2 as shown in FIGS. 3 and 4, and the expanding member 3 is integrated with the container body 2. Thus, the mounting of the expanding member 3 to the opening of the container body 2 is completed.

  In addition, between the 2nd guide parts 17 continues to the drooping wall 17a drooping from the horizontal wall 14, As a result, the 2nd guide part 17 is extended in the shape of a wall along the whole inner periphery of the opening part of the container main body 2. FIG. It will be. As a result, the entire inner peripheral edge of the opening 1e of the gusset bag 1 is shielded by the edge of the opening 3a of the spreading member 3, as shown in FIGS. At this time, the problem that the content a falls between the container body 2 and the gusset bag 1 is prevented.

  Further, as shown in FIGS. 2 and 3, the inclined wall 13 is provided on the inner peripheral side of the fitting portion 8 so that a concave portion is formed inside the inclined wall 13, and an annular shape is formed so as to continue to the inclined wall 13. A horizontal wall 14 is provided. As shown in FIGS. 2 and 3, a measuring tool 18 such as a spoon is placed on the horizontal wall 14.

  Further, as shown in FIGS. 5 to 9, the spread member 3 is spanned with a scraper 19 so as to cross the central opening 3 a. The contents “a” squeezed by the measuring tool 18 can be scraped off by the scraper 19.

  Further, a knob piece 20 projecting outward is provided on the periphery of the expanding member 3, that is, the fitting portion. The operator can easily attach / detach the expanding member 3 to / from the container body 2 or the like while holding the knob 20.

  Next, the operation of the refill container and the expansion member having the above-described configuration will be described.

  (1) The gusset bag 1 in which contents a such as powdered milk are stored is initially in a state where an opening 1e as shown in FIG. 1 (A) is sealed with a sealing portion 1a.

  The sealing portion 1a of the gusset bag 1 is opened as shown in FIG. 1B by being cut off on the planned cut line 1b. The opened gusset bag 1 is inserted into the container body 2. Alternatively, after the unopened gusset bag 1 is stored in the container main body 2, the sealed portion 1b is cut off to be opened.

  As shown in FIG. 1 (B), the opening 1e is automatically enlarged greatly at the same time as opening due to the elastic action of returning to the original linear shape of the elastic tape 21. Accordingly, the operator can easily and quickly take out the contents a from the bag without touching the opening 1e or the bag with hands or fingers.

  (2) At the opening 1e of the gusset bag 1, as shown in FIG. 1 (B), there may be a case where the initial four outward notches 1c and the two inward notches 1d remain slightly.

  The insertion portion of the expanding member 3 is inserted into the opening 1e of the gusset bag 1 in the container body 2 by the operator.

  The mounting of the expanding member 3 is performed as necessary, and can be omitted if the opening 1e is sufficiently expanded by the elastic tape 21. Or you may abbreviate | omit the 1st guide part 15 and escape part 16 in the expansion member 3. FIG.

  (3) As shown in FIG. 10 (A) and FIG. 11 (A), first, the first guide portion 15 of the insert in the expanding member 3 is in the outward notch portion 1c in the opening 1e of the gusset bag 1. Each outward notch 1c is simultaneously expanded while invading.

  (4) Subsequently, as shown in FIGS. 10 (B) and 11 (B), the escape portion 16 allows the inward notch portion 1d to pass through the opening 1e. The provided hook-shaped guide portions 16a guide each inward notch portion 1d to the expanded state while contacting the inward notch portion 1d.

  (5) Further, as shown in FIGS. 10C and 11C, the second guide portion 17 guides the inner periphery of the opening 1e and expands and holds the opening 1e in a well-formed shape. To do.

  (6) At the same time that the opening 1e of the gusset bag 1 is opened into a substantially rectangular shape by the second guide portion 17, the fitting portion 8 of the expanding member 3 is connected to the opening portion of the container body 2 as shown in FIGS. The expansion member 3 is integrated with the container main body 2.

  Thus, without the operator's finger or the like touching the inside of the gusset bag 1, the opening 1e of the gusset bag 1 is quickly attached to the opening of the refill container in a state where the opening 1e is opened in a larger square. It will be.

  (7) In order to take out the contents a of the gusset bag 1, a measuring tool 18 such as a spoon is inserted into the gusset bag 1 through the opening 3 a of the expanding member 3, and the contents a are scooped. The contents a are removed and taken out of the container body 2.

  (8) Since the second guide portion 17 and the hanging wall 17a extend along the entire inner periphery of the opening of the container body 2, the entire inner periphery of the opening 1e of the gusset bag 1 is shown in FIGS. Thus, it is shielded from the opening edge of the spreading member 3. Thereby, when taking out the content a from the gusset bag 1, the malfunction that the content a falls between the container main body 2 and the gusset bag 1 is prevented.

  (9) After taking out the contents a, the opening / closing lid 4 is tilted toward the opening side of the container body 2 so that the fitting portion 9 of the opening / closing lid 4 is fitted to the fitting portion 8 of the expanding member 3 to open / close The inside of the gusset bag 1 can be kept sealed again by the lid 4.

  (10) When the contents a in the gusset bag 1 are consumed, the opening / closing lid 4 is opened, the expanding member 3 is removed from the container body 2, the empty gusset bag 1 is removed from the container body 2, and a new gusset bag 1 And is mounted in the container body 2 in the same procedure as described above. The opening 1e of the gusset bag 1 is properly expanded by the restoring action of the elastic tape 21.

  Moreover, even if the opening of the opening 1e is insufficient or incomplete, by opening the opening 1e of the gusset bag 1 with the expanding member 3, the opening 1e having a more organized shape is formed, The content a of the contents can be taken out.

  In addition, this invention is not limited to the said embodiment, A various change is possible within the range of the summary of this invention. For example, in the embodiment, the content is powdered milk, but in addition to such a powder form, it can be various forms of food such as granules, granules, blocks, and pastes. In addition, the contents may be tablets, or may be in the form of pieces in which individual pieces are packaged.

  Polypropylene and polyethylene terephthalate were used, and elastic tapes having a square cross section and various cross-sectional areas were prepared. And each elastic tape was affixed by the heat seal to the bag perimeter along the sealing part of the gusset bag filled with powdered milk. When the sealing part of these gusset bags was cut out and the opening was viewed, the results shown in Table 1 below were obtained.

  In Table 1, “OPP” indicates stretched polypropylene, and “PET” indicates polyethylene terephthalate. “△” indicates the case where the automatic opening of the opening is insufficient, and it cannot be opened sufficiently without using a finger. “○” indicates the case where the automatic opening of the opening is sufficient. .

  As is apparent from the contents shown in Table 1, when the elastic tape is a polyethylene terephthalate tape having a rectangular cross section with a thickness of 100 μm or more and a width of 5 mm or more, good automatic opening can be obtained.

DESCRIPTION OF SYMBOLS 1 ... Gusset bag 1a, 1g ... Sealing part 1b ... Scheduled cut line 1e ... Opening opening 1f ... Machi part 21 ... Elastic tape a ... Contents

Claims (5)

  A cylindrical portion is formed by the packaging material including the metal foil layer, gusset portions are formed on both sides of the cylindrical portion, and the content storage chamber is formed by at least two sealing portions extending so as to cross between the gusset portions. In a gusseted bag provided with a planned cut line in the vicinity of either one of the sealing portions, at least a part of both the gusset portions crosses the bag wall on the content storage chamber side from the planned cut line A gusseted bag with elastic tape attached to it.   The gusset bag according to claim 1, wherein the elastic tape is attached over the entire circumference of the bag wall including both the gusset portions.   2. The gusset bag according to claim 1, wherein the elastic tape is a polyethylene terephthalate tape having a rectangular cross section with a thickness of 100 μm or more and a width of 5 mm or more.   The gusset bag which filled the contents in the gusset bag as described in any one of Claims 1 thru | or 3, and sealed.   A bag containing the contents; a container body into which the bag is inserted; an expansion member that expands the opening of the bag when fitted into the opening of the container body; and an opening of the container body In the refill container set combined with an opening / closing lid that opens and closes, the bag is a gusset bag in which a polygonal opening is formed by opening, and a cylindrical part is formed by a packaging material including a metal foil layer A gusset part is formed on both sides of the cylindrical part, and a content storage chamber is provided by at least two sealing parts extending so as to cross between the two gusset parts, and is scheduled to be cut out in the vicinity of one of the sealing parts A line is set, and an elastic tape is attached to the bag wall on the content storage chamber side of the cut-out planned line so as to extend at least across both gusset portions, and the expanding member is formed on the container body. Installed in the opening A first guide portion that expands each outward notch portion while invading into an outward notch portion in the opening of the gusset bag accommodated in the container body, and the opening of the container body of the expansion member A refill container set comprising: a second guide part that guides an inner peripheral edge of the opening when the attachment to the part is completed, and expands the opening to a well-formed shape.

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