WO2015025744A1 - 液体収納容器およびその折畳み方法 - Google Patents

液体収納容器およびその折畳み方法 Download PDF

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Publication number
WO2015025744A1
WO2015025744A1 PCT/JP2014/071063 JP2014071063W WO2015025744A1 WO 2015025744 A1 WO2015025744 A1 WO 2015025744A1 JP 2014071063 W JP2014071063 W JP 2014071063W WO 2015025744 A1 WO2015025744 A1 WO 2015025744A1
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WO
WIPO (PCT)
Prior art keywords
bag body
liquid storage
storage container
folding
bag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/071063
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
怜 原田
弘旭 後藤
将人 三宅
翔太 西邨
倫子 熊澤
克行 甕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to CN201480032688.XA priority Critical patent/CN105283388B/zh
Priority to JP2015514698A priority patent/JP5776098B2/ja
Priority to US14/912,471 priority patent/US9926124B2/en
Priority to KR1020157026802A priority patent/KR102154539B1/ko
Priority to KR1020167000276A priority patent/KR101903258B1/ko
Publication of WO2015025744A1 publication Critical patent/WO2015025744A1/ja
Anticipated expiration legal-status Critical
Priority to US15/859,980 priority patent/US10807780B2/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • A61J1/10—Bag-type containers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J9/00—Feeding-bottles in general
    • A61J9/001—Feeding-bottles in general with inner liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/76—Opening and distending flattened articles
    • B31B50/78—Mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag folders
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A45D2034/005—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes with a cartridge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/70—Construction of rigid or semi-rigid containers having corrugated or pleated walls

Definitions

  • the present invention relates to a liquid storage container used by being accommodated in an outer container and a folding method thereof, and more particularly, an outer container used for storage and transportation of fluid contents in the field of industrial chemicals, pharmaceuticals, cosmetic raw materials, and the like.
  • the present invention relates to a liquid storage container that is housed and used and a folding method thereof.
  • liquid storage containers that contain fluid contents are used inside exterior containers made of aluminum, steel, stainless steel, fiberboard, etc. for storage and transportation. Yes.
  • Such a liquid storage container can be reused by simply removing a used liquid storage container from the outer container and setting a new liquid storage container in the outer container. Compared to filling fluid contents in steel or other external containers directly, it has the advantage of eliminating the hassle of washing, etc., and is widely used as a container for industrial chemicals, pharmaceuticals and cosmetic raw materials .
  • a liquid container having a bag body having an inner bag and an outer bag and a spout attached to the bag body is known.
  • Such a liquid storage container is first folded compactly and inserted into the exterior container from the opening of the exterior container. Thereafter, nitrogen gas is supplied into the liquid storage container to inflate the liquid storage container inside the outer container. Next, the liquid container is filled with the content liquid.
  • the liquid storage container is inserted into the outer container from the opening, and then nitrogen gas is supplied into the liquid storage container to inflate the liquid storage container in the outer container. ing.
  • liquid storage container when the liquid storage container is inflated in the outer container, it is difficult to sufficiently expand the liquid storage container. If the liquid storage container cannot be sufficiently expanded, the internal volume of the liquid storage container is reduced.
  • the present invention has been made in consideration of such points, and provides a liquid storage container and a method for folding the liquid storage container that can sufficiently inflate the liquid storage container in the outer container before filling the content liquid. Objective.
  • a bag main body having an inner bag and an outer bag heat-sealed with each other, and an upper edge of the bag main body are provided.
  • the bag body has a shape having an upper edge, a bottom edge, and two side edges, and the bag body extends in the longitudinal direction.
  • the upper edge of the bag body includes two heat seal portions, and the bottom edge and the two side edges include one heat seal portion. It may be.
  • a bent portion is formed by folding the upper edge side corner portion of a single bellows portion on each side edge side, and when the length of the bent portion is a, 3% ⁇ a / H ⁇ 20% It may become the liquid storage container characterized by becoming.
  • a bent portion is formed by bending an upper edge side corner portion among a plurality of bellows portions on each side edge side of the bag body, and the length of the bent portion is a.
  • An embodiment of the present invention may be a liquid storage container characterized in that a bottom folding portion is provided in a lower portion of the bag body.
  • the outer bag of the bag body may be a liquid storage container characterized by having an elongation of 300% to 500%.
  • An embodiment of the present invention relates to a method for folding a liquid storage container accommodated in an exterior container having an opening, a bag body having an inner bag and an outer bag heat-sealed with each other, and an upper edge of the bag body
  • a bent portion is formed by bending an upper edge side corner portion of a single bellows portion on each side edge side of the bag body, and the length of the bent portion is defined as a.
  • 3% ⁇ a / H ⁇ 20% It may be a method for folding the liquid container characterized by the following.
  • a bent portion is formed by bending an upper edge side corner portion among a plurality of bellows portions on each side edge side of the bag body, and the length of the bent portion is a.
  • 3% ⁇ a / H ⁇ 20% It may be a method for folding the liquid container characterized by the following.
  • the spout has an elliptical cylindrical spout attachment part, the spout attachment part is attached to the bag body, and the plurality of bellows parts, At least the bellows on both sides of the spout attachment portion and the outer bellows on the outer side in the width direction from the adjacent bellows portions are folded so as to intersect with an extension line of the elliptical long axis of the spout attachment portion. It may be a liquid storage container.
  • An embodiment of the present invention may be a liquid storage container in which the adjacent bellows portions are folded in the same direction as viewed from the spout attachment portion.
  • the width of the belly portion on both sides is W5
  • the width of the belly portion on the outside is W6, W6 / 2 ⁇ W5> 0
  • It may be a liquid storage container characterized by satisfying.
  • a bag body having a shape having an upper edge, a bottom edge, and two side edges, and an upper edge of the bag body
  • a pour outlet attached to the opening of the outer container, and bent at the corners between the upper edge and the side edges of the bag body.
  • the bag body has a plurality of bellows portions folded through a longitudinal folding line extending in the longitudinal direction, the width of the bag body is defined as W0, and When the width of the spout attachment part of the outlet is W3, the width of the belly part is W, and the width of each bent part is b, W ⁇ b ⁇ (W0 ⁇ W3) / 2 It is a liquid storage container characterized by becoming.
  • Another embodiment of the present invention is characterized in that, among the pair of bent portions, one bent portion is bent toward the front side and the other bent portion is bent toward the back side. It may be a liquid storage container.
  • the bag body has a folded portion that is folded via an upper lateral fold line and a lower lateral fold line, the overall length of the bag body is H, and the upper edge And X is the length between the lower lateral fold line and Y is the length between the upper lateral fold curve and the lower lateral fold curve, 10% ⁇ X / H ⁇ 50%, 3% ⁇ Y / H ⁇ 25%, X ⁇ Y It may become the liquid storage container characterized by becoming.
  • the upper edge of the bag body includes two heat seal portions, and the bottom edge and the two side edges include one heat seal portion; It may be.
  • Another embodiment of the present invention includes an exterior container having an opening, a bag body housed in the exterior container and having a shape having an upper edge, a bottom edge, and two side edges, and an upper edge of the bag body.
  • a pour opening attached to the opening of the outer container, and a pair of pouches by bending a corner between the upper edge and each side edge of the bag body.
  • the bag body has a plurality of bellows parts folded through longitudinal folding lines extending in the longitudinal direction, the width of the bag body is set to W0, and the pouring portion of the spout is formed.
  • the width of the outlet mounting portion is W3
  • the width of the belly portion is W
  • the width of each bent portion is b, W ⁇ b ⁇ (W0 ⁇ W3) / 2
  • a liquid storage container and a combination of an exterior container and a liquid storage container.
  • Another embodiment of the present invention is a liquid having a bag body having a shape having an upper edge, a bottom edge, and two side edges, and a spout having a spout attachment portion attached to the upper edge of the bag body.
  • Another embodiment of the present invention includes an exterior container having an opening, a bag body housed in the exterior container and having a shape having an upper edge, a bottom edge, and two side edges, and an upper edge of the bag body.
  • a pour opening attached to the opening of the outer container, and a pair of pouches by bending a corner between the upper edge and each side edge of the bag body.
  • the bag body has a plurality of bellows parts folded through longitudinal folding lines extending in the longitudinal direction, the width of the bag body is set to W0, and the pouring portion of the spout is formed.
  • Another embodiment of the present invention includes an exterior container having an opening, a bag body housed in the exterior container and having a shape having an upper edge, a bottom edge, and two side edges, and an upper edge of the bag body.
  • a pour opening attached to the opening of the outer container, and a pair of pouches by bending a corner between the upper edge and each side edge of the bag body.
  • the bag body has a plurality of bellows parts folded through longitudinal folding lines extending in the longitudinal direction, the width of the bag body is set to W0, and the pouring portion of the spout is formed.
  • a liquid dispensing method using a combination of an exterior container and a liquid storage container provided with a liquid storage container, and a step of pouring the liquid filled in the bag body from the spout This is a liquid pouring method characterized by the above.
  • the liquid storage container inserted into the outer container can be reliably inflated.
  • FIG. 1 is a plan view showing a liquid container according to the present invention.
  • 2A is a cross-sectional view showing a spout of the liquid storage container
  • FIG. 2B is a bottom view showing the spout.
  • FIG. 3 is a cross-sectional view showing the layer structure of the bag body of the liquid storage container.
  • 4A is a view showing the folded liquid storage container
  • FIG. 4B is an enlarged view of a portion B in FIG. 4A
  • FIG. 4C is an enlarged view of a portion C in FIG. 4A.
  • FIG. 5 is a view showing a state in which the bag body of the liquid storage container is folded in a belly shape through a vertical folding line.
  • FIG. 5 is a view showing a state in which the bag body of the liquid storage container is folded in a belly shape through a vertical folding line.
  • FIG. 6 is a view showing a state in which the bag body of the liquid storage container is folded through an upper lateral fold curve and a lower lateral fold curve.
  • FIG. 7 is a view showing a triangular bent portion formed by bending a bag body of a liquid storage container through a folding line.
  • 8A and 8B are views showing a state in which the liquid storage container is inserted into the outer container.
  • FIG. 9 is a perspective view showing a liquid container according to the present invention.
  • FIG. 10 is a plan view showing a liquid container according to the present invention.
  • FIG. 11 is a diagram showing a folded state of the bag body of the liquid container according to the present invention.
  • FIG. 12 is a plan view showing a liquid container according to the present invention.
  • FIG. 13A is a cross-sectional view showing the spout of the liquid storage container
  • FIG. 13B is a bottom view showing the spout.
  • FIG. 14 is a view showing a longitudinal folding line of the bag body of the liquid storage container.
  • FIG. 15 is a diagram illustrating a storage method of the liquid storage container.
  • FIG. 16 is a diagram illustrating a storage method of the liquid storage container.
  • FIG. 17 is a diagram illustrating a storage method of the liquid storage container.
  • FIG. 18 is a diagram illustrating a storage method of the liquid storage container.
  • FIG. 19 is a diagram illustrating a storage method of the liquid storage container.
  • 20A and 20B are views showing a state in which the liquid storage container is inserted into the outer container.
  • FIG. 1 is a plan view showing an embodiment of the liquid container according to the first embodiment
  • FIG. 2 (a) is a longitudinal sectional view of the spout
  • FIG. 1 (b) is a spout attachment portion of the spout
  • FIG. 3 is a bottom view seen from the side
  • FIG. 3 is a schematic diagram showing a layer structure of an outer bag and an inner bag used for a bag body of a liquid storage container.
  • the multiplex film 2 in which the outer bag 20 and the inner bag 21 are overlapped is overlapped so that the inner bags 21 face each other to make a total of four sheets, and the four sides are heat-sealed.
  • the bag body 3 in which the heat seal portion 10 is formed, and the spout 4 disposed on the upper edge 3a of the bag body 3 and heat-sealed in advance between the inner bags 21 are provided.
  • the bag body 3 is obtained by laminating the multiple films 2 so that the inner bags 21 face each other, and heat-sealing the four sides to form the heat-seal portion 10, but this is not limitative.
  • the multiple film 2 is folded so that the inner bags 21 face each other, the three outer peripheral sides that overlap each other may be heat-sealed.
  • the bag body does not necessarily need to be composed of multiple films, and the film structure of the package body 3 can be selected as appropriate according to the contents and quantity.
  • the bag body 3 can be obtained by stacking the two multiple films 2 and heat-sealing the periphery to form the heat seal portion 10.
  • the bag body 3 has a rectangular shape having an upper edge 3a, a bottom edge 3b, and two side edges 3c, 3c.
  • the upper edge 3a includes two upper edge heat seal portions 10a
  • the bottom edge 3b includes one bottom edge heat seal portion 10b
  • each side edge 3c, 3c includes one side edge heat seal portion 10c.
  • the upper edge heat seal portion 10a, the bottom edge heat seal portion 10b, and the side edge heat seal portion 10c constitute the heat seal portion 10.
  • the upper edge 3a of the bag body 3 includes the two upper edge heat seal portions 10a as described above. In this way, by dividing the heat seal portion 10a of the upper edge 3a into two, for example, compared to a case where one heat seal portion having a width of two heat seal portions 10a is formed on the upper edge 3a, The upper edge 3a can be configured to be relatively soft.
  • the spout 4 is composed of a spout mounting portion 4a and a spout engaging portion 4b connected to the spout mounting portion 4a. As shown in FIG. 1, the spout 4 is a spout mounting portion 4a. It is heat-sealed between the inner bags 21 of the multiple film 2.
  • the spout attachment portion 4a of the spout 4 is flat and has a through hole 4c at the center.
  • the spout 4 when the spout 4 is heat-sealed between the inner bags 21 of the multiplex film 2 at the spout mounting portion 4a, a gap is formed between the inner bags 21 and the two regions surrounded by the end of the spout mounting portion 4a. It is easy to become poorly sealed. In order to prevent this, plate-like ribs 4d are provided at both ends, and a gap is prevented by melting the plate-like ribs 4d during heat fusion.
  • the spout attachment part 4a may have an elliptic cylinder shape.
  • the spout 4 is preferably manufactured by an injection molding method.
  • the resin used for this is not particularly limited as long as it is a resin that can be injection-molded.
  • the resin constituting the inner surface of the inner bag 21 of the multiplex film 2 is bonded by thermal fusion, although it is necessary to select appropriately depending on the resin constituting the inner surface, high-density polyethylene that is rigid at high temperatures and hardly brittle at low temperatures is preferable.
  • the multiplex film 2 constituting the bag body 3 will be described.
  • the multiple film 2 is composed of a film constituting the outer bag 20 and a film constituting the inner bag 21.
  • a laminate of unstretched nylon (thickness 20 ⁇ m) 20a / linear low density polyethylene (thickness 40 ⁇ m) 20b can be used as the outer bag 20 of the bag body 3.
  • linear low density polyethylene (thickness 70 ⁇ m) can be used as the outer bag 20 of the bag body 3.
  • the outer bag 20 contains unstretched nylon 20a, the degree of elongation of the outer bag 20 can be increased.
  • the outer bag 20 has a degree of elongation of 300% to 500%.
  • the bag body 3 can be made soft as a whole, and the bag body 3 is inserted into the outer container 5 as will be described later.
  • the bag body 3 is inflated in the exterior container by supplying nitrogen gas therein, the bag body 3 can be inflated smoothly.
  • the material and layer structure of the bag body 3 are not limited to those described above.
  • the inner bag 21 of the bag body 3 may have a laminated structure, or the outer bag 20 may have a three-layered structure.
  • materials such as low density polyethylene, a mixture of low density polyethylene and linear low density polyethylene, polypropylene, and fluorine-containing resin can be used.
  • materials such as nylon, polyethylene terephthalate, polybutylene terephthalate, fluorine-containing resin, having an elongation of 300% to 500%, for example, low density polyethylene and linear low density polyethylene should be used. Can do.
  • the bag body 3 includes a plurality of bellows portions 12 that are formed in a bellows shape by way of a plurality of, for example, four longitudinal folding lines 11 extending in the vertical direction. (See FIGS. 4 (a), (b), (c) and FIG. 5).
  • each belly portion 12 of the bag body 3 has substantially the same width W.
  • the spout 4 attached to the bag body 3 is arranged corresponding to the central belly portion 12 among the five belly portions 12. 4 (a), 4 (b), 4 (c), and FIG. 5, the bottom folded portion 17 may be provided by folding the lower portion of the bag body 3.
  • the bag body 3 is folded along the vertical folding line 11 to form the five bellows portions 12, the bag body 3 is connected via the upper lateral folding line 15 a and the lower lateral folding line 15 b. It is folded and the folding part 16 extended in a horizontal direction is formed (refer FIG. 6).
  • the total length of the bag body 3 before folding is H
  • the distance between the upper edge 3a of the bag body 3 and the lower lateral bending portion 15b is X
  • the upper lateral folding line 15a is Y
  • the folded portion 16 of the bag body 3 can be formed in the upper part of the overall length of the bag body 3. For this reason, the weight of the part below the folding part 16 in the bag body 3 can be increased, and after inserting the liquid storage container 1 into the exterior container 5, the part below the folding part 16 of the bag body 3 is exteriorized. It can be reliably dropped by its own weight in the container 5. As a result, the liquid storage container 1 can be reliably inflated in the outer container 5.
  • the folded portion 16 having a sufficient length Y can be reliably formed.
  • the folded portion 16 having a sufficient length Y can be formed, and by making it smaller than 10%, the bag body 3 is positioned below the folded portion 16.
  • the part below the folding part 16 in the outer container 5 can be surely dropped by its own weight.
  • a plurality of bellows portions 12 are formed, and by folding through the upper lateral folding line 15a and the lower lateral folding line 15b.
  • the bag body 3 is folded via a folding line 13 extending between the upper edge 3 a and the side edges 3 c, 3 c, thereby forming a triangular triangular folding part 14. (See FIG. 7).
  • a pair of triangular bent portions 14 and 14 are formed, but when the corner has an R shape, instead of the pair of triangular bent portions 14 and 14, An R-shaped bent portion having an R shape is formed.
  • these triangular bent portions 14 and 14 or the R-shaped bent portion are collectively referred to as a bent portion.
  • examples of the triangular bent portions 14 and 14 are shown as the bent portions, but the bent portions are not limited to the triangular bent portions, and are R-shaped bent portions or others. You may use the bending part of the shape.
  • the process of forming the folding part 16 extended in a horizontal direction by folding through may perform any process first.
  • the length of the triangular bent portion 14 of the bag body 3 is a
  • the width is b
  • the total length of the bag body 3 is H
  • the width of the abdomen 12 is W, 3% ⁇ a / H ⁇ 20%, 1/2 ⁇ W ⁇ b ⁇ W It has become.
  • the length a of the triangular bent portion 14 is determined from the intersection of the extension line of the upper edge 3a of the bag body 3 and the extension line of the side edge 3c of the bag body 3 with the folding of the side edge 3c of the triangular bent portion 14. The distance to the song start position.
  • the width b of the triangular bent portion 14 is such that the bending of the upper edge 3a of the triangular bent portion 14 starts from the intersection of the extended line of the upper edge 3a of the bag body 3 and the extended line of the side edge 3c of the bag main body 3. The distance to the position.
  • a / H is larger than 20%
  • the triangular bent portion 14 formed by folding the bag body 3 along the folding line 13 cannot fit in the abdominal portion 12, and a / H is smaller than 3%.
  • the bag body 3 may be caught on the opening 5 a of the outer container 5.
  • the triangular bent portion 14 can be reliably accommodated in the abdominal portion 12 having the width W.
  • the triangular bent portion 14 is formed by bending the upper edge 3a side corner portion of the single belly portion 12 on the side edge 3c side of the bag body 3 is shown.
  • the triangular bent portion 14 may be formed by bending a plurality of corners 12 on the side edge 3 c side of the bag body 3, for example, two corners on the upper edge 3 a side.
  • FIG. 5 shows a belly portion 12 formed by folding the bag body 3 in a bellows shape through a plurality of longitudinal folding lines 11 extending in the vertical direction. In FIG. The folding part 16 is not shown.
  • FIG. 6 shows a folding portion 16 formed by folding the bag body 3 through the upper lateral folding line 15a and the lower lateral folding line 15b. In FIG. The abdomen 12 is not shown.
  • the bag body 3 is bent along the folding line 13 to form a triangular bent portion 14, but the abdominal portion 12 and the folded portion 16 are not shown in FIG. 7 for convenience.
  • the width W of the abdomen 12 does not necessarily have to be the same, and the width W of the plurality of abdomen 12 may be different from each other.
  • the width of the right triangular bent portion 14 of the pair of triangular bent portions 14, 14 of the bag body 3 is b R, and the right side of the plurality of bellows portions 12 of the bag main body 3.
  • a plurality of bellows portions 12 are formed by folding the bag main body 3 of the liquid storage container 1 along the vertical folding line 11, and the bag main body 11 thus formed with the bellows portions 12 is folded upward in the lateral direction.
  • the folding part 16 is formed by folding via the curved line 15a and the lower horizontal folding line 15b. Thereafter, the bag body 3 is bent along the folding line 13 to form a triangular bent portion 14.
  • the liquid storage container 1 in which a plurality of bellows portions 12, folding portions 16, and triangular bent portions 14 are formed on the bag body 3 is prepared.
  • the liquid storage container 1 is further folded in the vertical direction to be formed in an elongated shape in the vertical direction, and the liquid storage container 1 is inserted into the exterior container 5 from the opening 5a.
  • the spout 4 of the liquid storage container 1 is attached to the opening 5 a of the outer container 5.
  • the spout engaging portion 4 b of the spout 4 is engaged with the opening 5 a of the outer container 5.
  • the liquid container 1 can be filled with the content liquid.
  • the bag body 3 expands. Along with this, the bag body 3 folded in a belly shape through the longitudinal folding line 11 is expanded flat.
  • the triangular bent part 14 formed by bending through the folding line 13 is formed in the upper part of the bag body 3, the upper edge 3a of the bag body 3 is expanded when the bag body 3 expands. The corner is not caught by the opening 5a of the outer container 5, and therefore, the bag body 3 is prevented from being damaged, and the bag cannot be sufficiently inflated to obtain a sufficient internal volume.
  • the upper edge 3a of the bag body 3 includes the two upper edge heat seal portions 10a, the upper edge 3a can be configured to be softer than the case of including a wide heat seal portion, and the bag body 3 can be made more flexible. It can be smoothly expanded in the outer container 5. Furthermore, when the outer bag 20 of the bag body 3 has an elongation of 300% to 500%, the flexibility of the bag body 3 is enhanced, and the expansion action of the bag body 3 can be easily performed.
  • the extension degree of the outer bag 20 may be 300% or less, or may be 500% or more.
  • the folding portion 16 is formed after the abdomen 12 is formed, after the bag body 3 is placed in the outer container 5, the portion below the folding portion 16 is first placed in the outer container 5 by its own weight. A plurality of the abdominal portions 12 that have been folded are loosened. Thereafter, the supply of nitrogen gas causes the inside of the bag body 3 to swell and the abdomen 12 to expand flatly.
  • the folding part 16 when the abdomen 12 is formed after the folding part 16 is formed, after the bag body 3 is put in the outer container 5, first, the folding of the plurality of the abdomen 12 that have been folded is loosened and is slightly flat. Expand into shape. At this time, the folding part 16 has not fallen. Thereafter, the supply of nitrogen gas causes the portion on the spout 4 side to swell relative to the folding portion 16 inside the bag, and the plurality of bellows portions 12 are expanded flat in parallel. In this way, as the abdomen 12 becomes flat, the part below the folding part 16 falls below the inside of the outer container 5 by its own weight, and then below the lower lateral folding line 15b. It will swell.
  • the bag body 3 of the liquid container 1 was folded as described above. That is, a plurality of bellows portions 12 are formed by folding the bag body 3 in a bellows shape along the longitudinal folding line 11, and the bag main bag 3 is passed through the upper lateral folding curve 15a and the lower lateral folding curve 15b.
  • the folding part 16 was formed by folding. Further, the bag body 3 was bent along the folding line 13, thereby forming a triangular bent portion 14 between the upper edge 3 a and the second side edge 3 c of the bag body 3.
  • the overall length H of the bag body 3 is 660 mm
  • the length X between the upper edge 3a and the lower lateral folding line 15b is 160 mm
  • Y is 50 mm.
  • the width W of the abdomen 12 is 100 mm.
  • the length a of the triangular bent portion 14 is 100 mm, and the width b is 100 mm.
  • the liquid storage container 1 configured in this way was inserted into the outer container 5 through the opening 5a. Thereafter, nitrogen gas was supplied into the liquid storage container 1 inserted into the outer container 5 to inflate the bag body 3 of the liquid storage container 1. At this time, the internal volume of the liquid storage container 1 was 20.2 l.
  • the internal volume of the present example was an average value of the internal volumes of the three liquid storage containers 1.
  • the folded liquid storage container 1 as a comparative example has the following shape.
  • X is set to 425 mm and Y is set to 117.5 mm with respect to the total length of 660 mm of the bag body 3, and other configurations are the same as those in the above-described embodiment.
  • the liquid storage container 1 configured as described above was inserted into the outer container 5 through the opening 5a, and the bag body 3 was inflated by supplying nitrogen gas into the inserted liquid storage container 1.
  • the internal volume of the liquid container 1 was 17.7 l.
  • the internal volume of the comparative example was an average value of the internal volumes of the three liquid storage containers 1.
  • the liquid storage container 1 according to the present embodiment swells smoothly in the outer container 5, and the liquid storage container 1 in the outer container 5 has an internal volume substantially equal to that of the liquid storage container 1 before folding. I understood.
  • Example 2-1 First, a liquid storage container 1 having an internal volume of 20.8 l before folding was prepared. Next, the bag body 3 of the liquid container 1 was folded as described above. That is, the bag body 3 is folded through the upper lateral folding line 15a and the lower lateral folding line 15b to form the folded portion 16, and the longitudinal folding line 11 is used to fold the bag body 3 in a belly shape. The abdomen 12 was formed. Further, the bag body 3 was bent along the folding line 13, thereby forming a triangular bent portion 14 between the upper edge 3 a and the second side edge 3 c of the bag body 3.
  • the overall length H of the bag body 3 is 660 mm
  • the length X between the upper edge 3a and the lower lateral folding line 15b is 160 mm
  • Y is 50 mm
  • the width W of the abdomen 12 is 100 mm
  • the length a of the triangular bent portion 14 is 100 mm
  • the width b is 100 mm.
  • the outer container 5 containing the liquid storage container 1 swelled inside was placed on a weight scale with the internal pressure vented, and the tare was confirmed. Thereafter, further, water was supplied to the liquid storage container 1, and the internal volume of the liquid storage container 1 was confirmed by comparing the weight change before and after the water supply. At this time, the internal volume of the liquid container 1 was 20.1 l. In addition, the internal volume of the present Example took the average value of the internal volume of the three liquid storage containers 1.
  • Example 2-2 The liquid container 1 was folded in the same manner as in Example 2-1, except that the triangular bent portion 14 was not provided.
  • the internal volume of the liquid storage container 1 at this time was 20.0 l.
  • Example 2-3 The liquid container 1 was folded in the same manner as in Example 2-1, except that the triangular bent portion 14 was not provided and the values of X and Y were changed.
  • the internal volume of the liquid storage container 1 at this time was 20.0 l.
  • Example 2-4 The liquid container 1 was folded in the same manner as in Example 2-1, except that the triangular bent portion 14 was not provided and the values of X and Y were changed.
  • the internal volume of the liquid storage container 1 at this time was 19.8 l.
  • Example 2-5 The liquid container 1 was folded in the same manner as in Example 2-1, except that the triangular bent portion 14 was not provided and the values of X and Y were changed.
  • the internal volume of the liquid storage container 1 at this time was 20.0 l.
  • Example 2-6 The liquid container 1 was folded in the same manner as in Example 2-1, except that the triangular bent portion 14 was not provided and the values of X and Y were changed.
  • the internal volume of the liquid storage container 1 at this time was 20.1 l.
  • Example 2-7 The liquid container 1 was folded in the same manner as in Example 2-1, except that the triangular bent portion 14 was not provided and the values of X and Y were changed.
  • the internal volume of the liquid storage container 1 at this time was 20.1 l.
  • Example 2-8 The liquid container 1 was folded in the same manner as in Example 2-1, except that the value a was changed.
  • the internal volume of the liquid storage container 1 at this time was 20.2 l.
  • Example 2-9 The liquid container 1 was folded in the same manner as in Example 2-1, except that the value a was changed.
  • the internal volume of the liquid storage container 1 at this time was 20.1 l.
  • Example 2-10 The liquid container 1 was folded in the same manner as in Example 2-1, except that the value b was changed.
  • the internal volume of the liquid storage container 1 at this time was 20.1 l.
  • Example 2-11 The liquid container 1 was folded in the same manner as in Example 2-1, except that the triangular bent portion 14 was formed by overlapping and bending the two bellows portions 12 on the side edge 3c side of the bag body 3. .
  • the internal volume of the liquid storage container 1 at this time was 20.1 l.
  • Tables 1 and 2 show the dimensions and internal volumes of each part of the liquid storage container 1 in Examples 2-1 to 2-11 and Comparative Examples 2-1 to 2-5, respectively.
  • the internal volumes of the liquid storage containers 1 of Examples 2-1 to 2-11 are larger than those of Comparative Examples 2-1 to 2-5.
  • the internal volume is reduced by 5% or more compared to the internal volume 20.8 l before folding of the liquid storage container 1, but Examples 2-1 to In 2-11, the reduction of the internal volume remained within 5%, indicating that the outer container 5 was sufficiently inflated.
  • FIGS. 9 to 11 is only different in the shape of the abdomen 12, and the other parts are the same as those of the first embodiment shown in FIGS.
  • the liquid storage container 1 includes a bag body 3 and a spout 4 that is heat-sealed to the upper edge 3 a of the bag body 3.
  • the spout 4 includes an elliptical cylindrical spout mounting portion 4a and a spout engaging portion 4b connected to the spout mounting portion 4a. As shown in FIG. It is heat-sealed to the upper edge 3a of the bag body 3 via the attachment portion 4a.
  • the abdomen 12 includes abdomen 12 that is formed by being folded in a belly shape through a plurality of, for example, six longitudinal folding lines 11 extending in the vertical direction.
  • the spout 4 has an elliptical cylindrical spout attachment portion 4a, and among the plurality of the bellows portions, at least the width of the pair of bellows portions 12A adjacent to the spout attachment portion 4a is as follows. , W5. In addition, a total of four outer abdominal portions 12B are provided outward in the width direction from the adjacent abdominal portion W5, and the width of the abdominal portion 12B is W6 on the outer side.
  • a pair of bellows portions 12A and a total of four outer bellows portions 12B intersect with an extension line of the elliptical long axis Z of the spout attachment portion 4a, and are preferably orthogonal to the extension line.
  • width W5 of the belly portion 12A on both sides and the width W6 of the belly portion 12B on the outside are: W6 / 2 ⁇ W5> 0 Satisfy the relationship.
  • the adjacent belly portion 12A is folded in the same direction as viewed from the spout attachment portion 4a.
  • “the same direction” means that the pair of bellows portions 12A adjacent to the spout attachment portion 4a are both folded toward the front side (for example, the lower side of FIG. 10), or both are located on the back side ( For example, it means to be folded into the upper side of FIG.
  • the liquid storage container 1 folded as described above is inserted into the exterior container 5 from the opening 5a. Further, the spout engaging portion 4b is engaged with the opening 5a, and an inflating jig (not shown) is inserted into the through hole 4c of the spout 4. Then, the spout 4 is fixed to the opening 5a by attaching an expansion cap (not shown) so as to cover the spout 4 and the opening 5a.
  • an expansion cap not shown
  • the expansion cap and expansion jig are removed from the outer container 5 and the spout 4, and a liquid supply nozzle (not shown) is inserted through the through hole 4 c of the spout 4. 4 is attached.
  • a liquid supply nozzle (not shown) is inserted through the through hole 4 c of the spout 4. 4 is attached.
  • the pair of bellows portions 12A and the total four outer bellows portions 12B are folded in the same direction as viewed from the spout attachment portion 4a, and the spout attachment portion 4a Since it is orthogonal to the ellipse major axis Z, the pair of bellows portions 12A and the total of the four outer bellows portions 12B spread smoothly outward from the spout 4 without expanding in a twisted state. Therefore, the outer surface of the liquid supply nozzle is not soiled (see FIG. 11).
  • Example 3-1 As shown in FIG. 9 to FIG. 11, the adjacent bellows portion and the outer bellows portion were folded so as to be orthogonal to the extension line of the elliptical long axis of the spout attachment portion. A liquid container was prepared.
  • Example 3-2 a liquid storage container was prepared in which the abdomen was folded so as to be parallel to the extension line of the elliptical long axis of the spout attachment part.
  • a triangular bent portion was formed by bending a plurality of bellows on each side edge side of the bag body.
  • Example 3-3 a liquid storage container was prepared in which the belly part was folded in parallel with the extension line of the elliptical long axis of the spout attachment part.
  • a triangular bent portion was formed by folding a single belly portion on each side edge of the bag body.
  • a CCD camera (1F11C5-20, OLYMPUS) was inserted from the spout into the bag body, and then it was confirmed whether or not a wall due to twisting was formed in the vicinity of the spout.
  • FIG. 12 is a plan view showing an embodiment of the liquid container according to the present invention
  • FIG. 13 (a) is a longitudinal sectional view of the spout
  • FIG. 12 (b) is a view from the spout attachment portion side of the spout. It is a bottom view.
  • the multiplex film 2 in which the outer bag 20 and the inner bag 21 are overlapped is overlapped so that the inner bags 21 face each other to make a total of four sheets, and the four sides are heat-sealed.
  • the bag body 3 in which the heat seal portion 10 is formed, and the spout 4 disposed on the upper edge 3a of the bag body 3 and heat-sealed in advance between the inner bags 21 are provided.
  • the bag body 3 is obtained by laminating the multiple films 2 so that the inner bags 21 face each other, and heat-sealing the four sides to form the heat-seal portion 10, but this is not limitative.
  • the multiple film 2 is folded so that the inner bags 21 face each other, the three outer peripheral sides that overlap each other may be heat-sealed.
  • the bag body does not necessarily need to be composed of multiple films, and the film structure of the bag body 3 can be appropriately selected according to the contents and quantity.
  • the bag body 3 can be obtained by stacking the two multiple films 2 and heat-sealing the periphery to form the heat seal portion 10.
  • the bag body 3 has a rectangular shape having an upper edge 3a, a bottom edge 3b, and two side edges 3c, 3c.
  • the upper edge 3a includes two upper edge heat seal portions 10a
  • the bottom edge 3b includes one bottom edge heat seal portion 10b
  • each side edge 3c, 3c includes one side edge heat seal portion 10c.
  • the upper edge heat seal portion 10a, the bottom edge heat seal portion 10b, and the side edge heat seal portion 10c constitute the heat seal portion 10.
  • the upper edge 3a of the bag body 3 includes the two upper edge heat seal portions 10a as described above. In this way, by dividing the heat seal portion 10a of the upper edge 3a into two, for example, compared to a case where one heat seal portion having a width of two heat seal portions 10a is formed on the upper edge 3a, The upper edge 3a can be configured to be relatively soft.
  • the spout 4 is composed of a spout mounting portion 4a and a spout engaging portion 4b connected to the spout mounting portion 4a. As shown in FIG. 12, the spout 4 is a spout mounting portion 4a. It is heat-sealed between the inner bags 21 of the multiple film 2.
  • the spout attachment portion 4a of the spout 4 is flat and has a through hole 4c at the center.
  • a gap is formed between the inner bags 21 and the two regions surrounded by the end of the spout mounting portion 4a. It is easy to become poorly sealed.
  • plate-like ribs 4d are provided at both ends, and a gap is prevented by melting the plate-like ribs 4d during heat fusion.
  • the spout attachment part 4a may have an elliptic cylinder shape.
  • the spout 4 is preferably manufactured by an injection molding method.
  • the resin used for this is not particularly limited as long as it is a resin that can be injection-molded.
  • the resin constituting the inner surface of the inner bag 21 of the multiplex film 2 is bonded by thermal fusion, although it is necessary to select appropriately depending on the resin constituting the inner surface, high-density polyethylene that is rigid at high temperatures and hardly brittle at low temperatures is preferable.
  • the multiplex film 2 constituting the bag body 3 will be described.
  • the multiple film 2 is composed of a film constituting the outer bag 20 and a film constituting the inner bag 21.
  • a laminate of unstretched nylon (thickness 20 ⁇ m) 20a / linear low density polyethylene (thickness 40 ⁇ m) 20b can be used as the outer bag 20 of the bag body 3.
  • linear low density polyethylene (thickness 70 ⁇ m) can be used as the outer bag 20 of the bag body 3.
  • the outer bag 20 contains unstretched nylon 20a, the degree of elongation of the outer bag 20 can be increased.
  • the outer bag 20 has a degree of elongation of 300% to 500%.
  • the bag body 3 can be made soft as a whole, and the bag body 3 is inserted into the outer container 5 as will be described later.
  • the bag body 3 is inflated in the exterior container by supplying nitrogen gas therein, the bag body 3 can be inflated smoothly.
  • the material and layer structure of the bag body 3 are not limited to those described above.
  • materials such as low density polyethylene, a mixture of low density polyethylene and linear low density polyethylene, polypropylene, and fluorine-containing resin can be used.
  • materials such as nylon, polyethylene terephthalate, polybutylene terephthalate, fluorine-containing resin, having an elongation of 300% to 500%, for example, low density polyethylene and linear low density polyethylene should be used. Can do.
  • the bag body 3 includes a plurality of bellows portions 12 that are formed in a bellows shape by way of a plurality of, for example, four longitudinal folding lines 11 extending in the vertical direction.
  • each belly portion 12 of the bag body 3 has substantially the same width W.
  • the spout 4 attached to the bag body 3 is arranged corresponding to the central belly portion 12 among the five belly portions 12.
  • the bag body 3 is folded via an upper lateral fold line 15a and a lower lateral fold line 15b as will be described later, thereby forming a folded portion 16 extending in the lateral direction (see FIGS. 16 and 17). . *
  • the total length of the bag body 3 before folding is H
  • the distance between the upper edge 3a of the bag body 3 and the lower lateral folding portion 15b is X
  • the upper lateral folding line 15a is Y
  • the folded portion 16 of the bag body 3 can be formed in the upper part of the overall length of the bag body 3. For this reason, the weight of the part below the folding part 16 in the bag body 3 can be increased, and after inserting the liquid storage container 1 into the exterior container 5, the part below the folding part 16 of the bag body 3 is exteriorized. It can be reliably dropped by its own weight in the container 5. As a result, the liquid storage container 1 can be reliably inflated in the outer container 5.
  • the folded portion 16 having a sufficient length Y can be reliably formed.
  • the folding part 16 having a sufficient length Y can be formed. Further, by setting X ⁇ Y, the spout engaging portion 4b can be positioned above the upper lateral folding line 15a without overlapping the folding portion 16. Further, by making the value of Y / H smaller than 25%, it is possible to secure an area of the bag body 3 below the folding part 16 and to ensure that the part below the folding part 16 in the outer container 5 is self-weighted. Can be dropped.
  • the bag body 3 has a folding line 13 extending between the upper edge 3a and each side edge 3c, 3c, and between the upper edge 3a and each side edge 3c, 3c via this folding line 13.
  • a pair of triangular bent portions 14, 14 is formed (see FIG. 15).
  • the length of the triangular bent portion 14 of the bag body 3 is a
  • the width is b
  • the total length of the bag body 3 is H
  • the width of the bag body 3 is W0
  • the width of the belly portion 12 is W.
  • the length a of the triangular bent portion 14 is determined from the intersection of the extension line of the upper edge 3a of the bag body 3 and the extension line of the side edge 3c of the bag body 3 with the folding of the side edge 3c of the triangular bent portion 14. The distance to the song start position.
  • the width b of the triangular bent portion 14 is determined by the bending start position of the upper edge 3a of the triangular bent portion 14 from the intersection of the extended line of the upper edge 3a of the bag body 3 and the extended line of the side edge 3c of the bag main body 3. The distance to.
  • the right triangular bent portion 14 of the pair of triangular bent portions 14, 14 is bent toward the front, and the left triangular bent portion 14 is bent toward the back. ing. Further, as described above, the length a and the width b of the triangular bent portions 14 and 14 have large dimensions, whereby the triangular bent portions 14 and 14 also have a large shape.
  • the triangular bent portions 14 and 14 have a large shape as described above, when the bag body 3 is inserted into the outer container 5, the triangular bent portions 14 and 14 are separated from other portions of the bag main body 3 by the impact. They are pulled apart and do not keep in close contact with other parts of the bag body 3. For this reason, when the nitrogen gas is supplied to the liquid storage container 1 to inflate the bag body 3, the triangular bent portions 14 and 14 can be reliably expanded.
  • the width b of the triangular bent portions 14, 14 is smaller than the width W of the belly portion 12, when the bag body 3 is inserted into the outer container 5, the triangular bent portions 14, 14 are connected to the other portions of the bag main body 3. There are times when it does not leave the part.
  • the maximum width b capable of forming the triangular bent portions 14 and 14 with high accuracy is (W0 ⁇ W3) / 2, and the triangular bent portions 14 having a width b larger than (W0 ⁇ W3) / 2, It is difficult to form 14 with high accuracy.
  • the liquid storage container 1 When nitrogen gas is supplied to the bag body 3 to inflate, the nitrogen gas can flow to the upper part of the bag body 3 in a well-balanced manner, and the upper part of the bag body 3 can be reliably inflated. That is, when the pair of triangular bent portions 14 and 14 are bent in the same direction, the supplied nitrogen gas cannot sufficiently reach the side of the bag body 3 where the triangular bent portions 14 and 14 are bent.
  • the supplied nitrogen gas can flow to the upper part of the bag body 3 in a well-balanced manner by bending the pair of triangular bent portions 14 and 14 in opposite directions. Moreover, the problem which the bag main body 3 obstruct
  • the width W of the abdomen 12 does not necessarily have to be the same, and the width W of the plurality of abdomen 12 may be different from each other.
  • the width of the right triangular bent portion 14 of the pair of triangular bent portions 14, 14 of the bag body 3 is b R, and the right side of the plurality of bellows portions 12 of the bag main body 3.
  • the bag body 3 of the liquid storage container 1 is connected to the upper edge 3 a and each side edge 3 c via a folding line 13 extending between the upper edge 3 a and each side edge 3 c, 3 c.
  • the corner between 3c is bent.
  • a pair of triangular bent portions 14, 14 are formed in the bag body 3.
  • the right triangular bent portion 14 is bent toward the front side
  • the left triangular bent portion 14 is bent toward the rear side.
  • the upper part of the bag body 3 of the liquid storage container 1 is folded to the near side via the upper lateral folding line 15a.
  • the upper part of the bag body 3 folded to the near side is folded back to the back side via the lower lateral folding line 15b.
  • the folding portion 16 is formed between the upper lateral folding line 15a and the lower lateral direction 15b.
  • the bag body 3 is folded in the vertical direction along the vertical folding line 11 to form a plurality of belly parts 12.
  • the lower part of the bag body 3 is folded in the horizontal direction to form the bottom folded part 17 (see FIG. 19).
  • a liquid storage container in which a plurality of bellows parts 12, a folding part 16, a pair of triangular folding parts 14, 14, and a bottom folding part 17 are formed on the bag body 3. 1 is prepared.
  • the liquid storage container 1 is further folded in the vertical direction to be formed in an elongated shape in the vertical direction, and the liquid storage container 1 is inserted into the exterior container 5 from the opening 5a.
  • the spout 4 of the liquid storage container 1 is attached to the opening 5 a of the outer container 5.
  • the spout engaging portion 4 b of the spout 4 is engaged with the opening 5 a of the outer container 5.
  • the liquid storage container 1 is stored in the outer container 5 to form a combined body 1A of the outer container and the liquid storage container.
  • nitrogen gas is supplied from the spout 4 into the liquid storage container 1 of the combination 1A of the external container and the liquid storage container, and the bag body 3 of the liquid storage container 1 expands in the external container 5.
  • a liquid tube (not shown) can be inserted into the liquid storage container 1 from the spout 4 and filled with the content liquid (liquid) through the liquid tube. Thereafter, the content liquid in the liquid storage container 1 is poured out from the spout 4 via the liquid tube.
  • a suction pump is attached to the other end of the liquid tube having one end inserted into the spout 4, and the content liquid in the liquid storage container 1 can be poured out by the suction of the suction pump.
  • a compressed gas such as compressed air is supplied between the outer container 5 and the liquid storage container 1 through the spout 4, and the liquid storage container 1 is pressed from the outside by this compressed gas, so that the liquid content is supplied to the liquid tube. You may pour through.
  • the abdomen 12 of the bag body 3 of the liquid storage container 1 expands in the lateral direction by the impact of inserting the liquid storage container 1 into the outer container 5.
  • the pair of triangular bent portions 14, 14 of the bag body 3 are pulled away from the other parts of the bag body 3. For this reason, the pair of triangular bent portions 14, 14 does not keep in close contact with other portions of the bag body 3.
  • the portion below the folding part 16 of the bag body 3 falls due to its own weight, and the bag body 3 further expands in the outer container 5.
  • the bag body 3 expands. Along with this, the bag body 3 folded in a belly shape via the longitudinal folding line 11 is expanded more flatly.
  • the pair of triangular bent portions 14 and 14 are bent on the front side and the back side opposite to each other, the nitrogen gas supplied into the bag body 3 flows in a balanced manner in the upper part of the bag body 3, Thereby, a pair of triangular bending parts 14 and 14 can be expanded reliably. Moreover, the problem which the bag main body 3 obstruct
  • the upper edge 3a of the bag body 3 includes the two upper edge heat seal portions 10a, the upper edge 3a can be configured to be softer than the case of including a wide heat seal portion, and the bag body 3 can be made more flexible. It can be smoothly expanded in the outer container 5. Furthermore, since the outer bag 20 of the bag body 3 has an elongation of 300% to 500%, the flexibility of the bag body 3 can be enhanced and the expansion action of the bag body 3 can be easily performed.
  • Comparative Example 4 a liquid storage container including a bag body having a folded portion as shown in Table 5 and a plurality of bellows portions was prepared (there is no pair of triangular bent portions).
  • the liquid storage container according to Example 4 and the liquid storage container as Comparative Example 4 are stored in an exterior container having an actual internal volume of 20.4 L, which is used as a container that guarantees a capacity of 19 L.
  • a gas was supplied to the bag body to inflate the bag body in the outer container.
  • the closing frequency of the spout by the bag body was verified.
  • the closed state after inflating, visually inspect the spout through-hole from above the spout, and when the through-hole is completely blocked by the film constituting the bag body, it is defective (x), and when the through-hole is not blocked at all, A case where a portion was blocked was judged as good ( ⁇ ).
  • Example 4 Experimental result In Example 4, it obstruct
  • Table 5 shows the shape of the bag body in Example 4 and Comparative Example 4.
  • liquid storage containers according to Example 5-1 to Example 5 to 3 are stored in an outer container having an actual internal volume of 20.4 L, which is used as a container that guarantees a capacity of 19 L, and gas is stored in the liquid storage container.
  • the bag body was inflated in the outer container.
  • the openability of the bag body was evaluated by pouring water into the inflated bag body and measuring the capacity to fill the bag.
  • Example 5-1 A pair of triangular bent portions were bent in the same direction at the corner of the upper edge, and then a belly portion was formed. The amount of injected water was 19.4L.
  • Example 5-2 A pair of triangular bent portions at opposite corners at the upper edge corner, that is, one of the pair of triangular bent portions is on the front side, and the other triangular bent portion is on the front side. The part was folded back and then the abdomen was formed. The amount of injected water was 19.6 L.
  • Example 5-2 by opening the pair of triangular bent portions in opposite directions, the openability was slightly improved as compared with Example 5-1.
  • Example 5-3 A pair of triangular bent portions were bent in opposite directions at the corners of the upper edge, further folded portions were formed, and then an abdominal portion was formed. The amount of water injected was 19.9L.
  • Example 5-3 since the folding part is further formed, the openability is further improved.
  • Example 5-3 since the folded portion is further formed, the bag main body swells from the upper portion, so that the opening at the corner of the upper edge becomes better.
  • the folding part is further formed, it is possible to prevent the lower portion of the bag body from being bent slightly and the opening property from being deteriorated.
  • Table 6 shows how to fold Example 5-1 to Example 5-3 and the results of the water injection amount.
  • the average water injection amount is a value obtained by averaging the results of three water injection experiments.
  • Example 6-1 The capacity in Example 6-1 was 19.9 L, which was a sufficient capacity. However, since there are many bends in the vicinity of the spout provided on the upper side of the bag body, handling when storing the bag in the outer container is somewhat difficult. When X / H and Y / H are reduced more than this, it becomes difficult to store the bag body in the outer container.
  • Example 6-2 The capacity in Example 6-2 was 19.5 L, a decrease in capacity of 4.4% with respect to the internal volume (20.4 L) of the outer container. That is, if X / H and Y / H are made larger than this, the fall of the part below the folding part of the bag body in the outer container is not surely caused, so that the openability becomes worse and the sufficient capacity is obtained. It becomes difficult to secure.
  • Comparative Examples 6-1 to 6-4 The capacity in Comparative Example 6-1 was 19.0 L, a decrease in capacity of about 6.9% with respect to the inner volume (20.4 L) of the outer container, and the capacity may be 19 L or less. It was. That is, it cannot be said that a sufficient capacity can be secured.
  • the capacity in Comparative Example 6-4 was 19.1 L, a decrease of 6.4% in volume with respect to the inner volume (20.4 L) of the outer container, but the capacity may be 19 L or less. It was. That is, it cannot be said that a sufficient capacity can be secured stably.
  • the average water injection amount is a value obtained by averaging the results of three water injection experiments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Hematology (AREA)
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PCT/JP2014/071063 2013-08-20 2014-08-08 液体収納容器およびその折畳み方法 Ceased WO2015025744A1 (ja)

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CN201480032688.XA CN105283388B (zh) 2013-08-20 2014-08-08 液体收纳容器及其折叠方法
JP2015514698A JP5776098B2 (ja) 2013-08-20 2014-08-08 液体収納容器およびその折畳み方法
US14/912,471 US9926124B2 (en) 2013-08-20 2014-08-08 Liquid storage container and method for folding the container
KR1020157026802A KR102154539B1 (ko) 2013-08-20 2014-08-08 액체 수납 용기 및 그 절첩 방법
KR1020167000276A KR101903258B1 (ko) 2013-08-20 2014-08-08 액체 수납 용기 및 그 절첩 방법
US15/859,980 US10807780B2 (en) 2013-08-20 2018-01-02 Liquid storage container and method for folding the container

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CN106628606B (zh) * 2017-01-13 2019-03-01 尤赛飞 一种酒桶
JP6595128B2 (ja) * 2017-06-14 2019-10-23 大日本印刷株式会社 液体収納容器、液体収納容器の使用方法および液体収納容器と外装容器の組合体
DE102017215078A1 (de) * 2017-08-29 2019-02-28 Sig Technology Ag Flächenförmiger Verbund, insbesondere zum Herstellen formstabiler Nahrungsmittelbehälter, mit einer durch eine Vielzahl von teilweise konvex gebogenen Rilllinien gebildeten Dachfläche
JP6607479B2 (ja) * 2017-09-05 2019-11-20 大日本印刷株式会社 液体収納容器
JP7326701B2 (ja) * 2018-03-30 2023-08-16 大日本印刷株式会社 パウチ
JP7311340B2 (ja) * 2019-07-18 2023-07-19 東洋エアゾール工業株式会社 スパウト付きパウチおよびエアゾール容器
KR102756517B1 (ko) * 2020-04-22 2025-01-21 엔테그리스, 아이엔씨. 유체 용기용 멀티피스 부속품
CN118076409A (zh) * 2021-08-09 2024-05-24 Ilc多佛有限公司 包括软管倒钩和椭圆形主体的端口
JP2024109431A (ja) * 2023-02-01 2024-08-14 Ｔｏｐｐａｎホールディングス株式会社 スパウト付き包装袋、及び、スパウト付き包装袋の製造方法
CN116605446B (zh) * 2023-05-21 2026-01-02 展一智能科技(东台)有限公司 液袋在包装容器内的打开方法

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US10807780B2 (en) 2020-10-20
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CN106241019A (zh) 2016-12-21
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US20180162620A1 (en) 2018-06-14
TW201738154A (zh) 2017-11-01
KR20160024376A (ko) 2016-03-04
JP2019011137A (ja) 2019-01-24
KR102154539B1 (ko) 2020-09-10
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CN106241019B (zh) 2019-01-11
KR101903258B1 (ko) 2018-10-01

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