JP2008222259A - Compound container with bung - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compound container with a bung which is provided with a superior filling characteristic in filling with a liquid using a filling jig from an opening on the outside of a spout as to a compound container whose inside bag with a bung comprising the cap and the spout is stored in the outside box. <P>SOLUTION: In forming this compound container with a bung, an inside bag with a bung comprising the cap and the spout is stored in a rectangular parallelepiped outside box with a tilted top face formed with a hole in a condition where the bung protrudes outside of the hole of the tilted top face of the outside box. The top side of the inside bag has either a top seal part in a uniform width with a recess which is at least 5 mm deep in a condition where the center of the recess is shifted to the bung side from the center in the width direction of the inside bag or the top seal part with a protrusion which inwardly projects at least 5 mm in a condition where the center of the protrusion is shifted to the bung side from the center in the width direction of the inside bag. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a composite container including an outer box made of paper and an inner bag with a cap.

Conventionally, containers such as metal cans, glass bottles, and plastic bottles are mainly used as packaging containers for packaging liquid products such as various foods and non-foods. However, in recent years, from the viewpoint of waste disposal problems, as an alternative container for metal cans, glass bottles, and plastic bottles, it consists of a self-supporting flexible packaging bag with a specially shaped bottom part and a plastic film in an outer box made of paper. A bag-in-carton container having an inner bag is often used. In particular, the latter bag-in-carton container can display the contents in a stand-alone manner at the store after filling, even when an inner bag that does not have self-supporting properties is stored. is there. A container composed of an outer box made of paper and an inner bag provided with a cap has been proposed (see, for example, Patent Document 1).
Japanese Patent Publication No. 60-99870

  However, the proposed container is an inner bag in which a linear seal portion is provided on the upper side of the inner bag located on the top side of the outer box and is stored in the outer box. There were drawbacks such as poor filling ability when filling a liquid material using a filling jig.

  An object of the present invention is a composite container in which an inner bag provided with a cap made of a cap and a spout is housed in an outer box, and has a filling suitability when filling a liquid material with a filling jig from an opening of the spout. The object is to provide an excellent composite container with a cap.

  In the invention according to claim 1 of the present invention, the inner bag provided with the cap and the spout made of paper is made of paper and has a rectangular parallelepiped outer box having an inclined top surface provided with a hole. It is a composite container with a cap that is accommodated so as to protrude outward from the hole on the inclined top surface of the box, and a top seal portion of the same width having a recess of a predetermined depth is provided on the upper side of the inner bag. The stopper-attached composite container is characterized in that the center portion of the recess is provided so as to be located closer to the stopper than the center in the width direction of the inner bag.

  The invention according to claim 2 of the present invention is such that the inner bag provided with a cap and a spout on the bag body is made of paper and has a rectangular parallelepiped outer box having an inclined top surface provided with holes. It is a composite container with a cap that is stored so that the stopper protrudes outwardly from the hole on the inclined top surface of the outer box, and a convex portion having a predetermined height protruding inward is formed on the upper side of the inner bag. The top seal portion is provided with a stopper-attached composite container, wherein the center portion of the convex portion is provided so as to be located closer to the stopper than the center in the width direction of the inner bag.

  The invention according to claim 3 of the present invention is the composite container with a cap according to the invention according to claim 1, wherein the depth of the recess is 5 mm or more.

  The invention according to claim 4 of the present invention is the composite container with a cap according to the invention according to claim 2, wherein the height of the convex portion is 5 mm or more.

  In the composite container with a cap of the present invention, the inner bag provided with a cap and a spout is made of paper, and the cap is formed in a rectangular parallelepiped outer box having an inclined top surface provided with a hole. A container with a cap, which is accommodated so as to protrude outward from the hole on the inclined top surface, and a top seal portion of the same width having a concave portion of a predetermined depth on the upper side of the inner bag, A center portion of the recess is provided so as to be positioned on the side of the plug from the center in the width direction of the inner bag, or a ceiling having a predetermined height protruding on the upper side of the inner bag. Since the seal part is provided so that the center part of the convex part is located on the side of the plug from the center in the width direction of the inner bag, the inner bag is folded inward at both ends in the length direction of the top seal part. Even if the inner bag is stored in the outer box, the folded back part of the inner bag is the opening outside the spout. Obscured when viewed medium, be filled with contents of the liquid from the opening of the spout in the filling fixture having an opening and closing valve to the nozzle tip, you do not accidentally torn accidentally inner bag at the opening and closing valve. Further, by setting the depth of the concave portion or the height of the convex portion to be 5 mm or more, the folded portion of the inner bag becomes more difficult to see and the inner bag is not torn.

  The composite container with a cap of the present invention will be described below along the embodiments. FIG. 4: is a top view which shows one Embodiment of the blank used for the outer case of the composite container with a stopper of this invention, A blank (10) is a square on the long side of the both sides of a rectangular front board (11). The side plate (13) having the same shape as the side plate (12) cut at one corner of the shape has a vertical ruled line (30) and a vertical ruled line ( 31), and a back plate (14) and an adhesive plate (15) are provided on the long side opposite to the front plate (11) of the side plate (13), respectively, as a vertical ruled line (32) and a vertical ruled line. An inclined top plate (16) and a flap (25) each having a hole (50) through which a spout of a plug is passed through one of the short sides of the front plate (11) are sequentially provided via (33). , Are connected via a horizontal ruled line (36) and a horizontal ruled line (37), and the bottom flap ( 6) is provided continuously through a horizontal ruled line (41), and the long sides on both sides of the inclined top plate (16) having the holes (50) and the oblique sides of the side plate (12) and the side plate (13). Between the vertical ruled line (34) and the diagonal ruled line (44, 45), the vertical ruled line (35) and the diagonal ruled line (42, 43), the triangular folded plate (17, 18) and the triangular folded plate (19 , 20) are continuously provided, and the top plate (21) and the top plate (22) are provided on one side of the side plate (12) and the side plate (13) having the oblique sides, and the side plate (12) and the side plate (13). ) Narrower widths are provided continuously through the horizontal ruled line (38) and the horizontal ruled line (39), respectively, and the bottom plate (23) and the bottom plate (24) are provided on the opposite sides of the side plate (12) and the side plate. (13) are approximately the same width as each other and are provided continuously via a horizontal ruled line (41), and flaps (27 And each flap (28), the lateral ruled lines (40), have become continuously provided shape through a horizontal ruled (41).

  Fig.1 (a) is a perspective view which shows one Embodiment of the composite container with a stopper of this invention, and the composite container with a stopper (1) is in the outer box (2) which consists of the said blank (10). Although the inner bag (3) to which the cap (9) made of the cap and spout is attached is not shown in the drawing, the both ends in the longitudinal direction of the top seal part are folded inward, and the mouth bag (3) is further opened. The stopper (9) is housed in a state protruding outward from the outer box (2), and (b) is a perspective view showing a state in which the top surface side of the outer box of the composite container with a cap of (a) is opened. In the outer box (2), the inclined top plate (16), the flap (25), the top plate (21), the top plate (22) and the flap (27) are opened, and the outer box (2) An inner bag (3) to which a cap (9) made of a cap and a spout is attached is housed in the cap (9). It protrudes outward from a hole (not shown) provided in the inclined top plate (16) of the outer box (2), and further, a concave portion (5a) having a depth d on the upper side of the inner bag (3). ) Having the same width of the top seal portion (5) so that the central portion of the recess (5a) is located closer to the plug (9) side than the center (4) in the width direction of the inner bag (3). .

The numerical value of d of the concave portion (5a) of the top seal portion (5) is preferably 5 mm or more. Further, the central portion of the concave portion (5a) is connected to the plug (9) from the center (4) in the width direction of the inner bag (3). By providing the top seal part (5) so as to be positioned on the side), both ends of the top seal part (5) of the inner bag (3) in the longitudinal direction are folded back inward to the outer box (2). Even when stored, the folded portion of the inner bag (3) is difficult to see when viewed from the outside opening of the spout and is liquid from the opening of the spout with a filling jig having an opening / closing valve at the nozzle tip. Even if the contents are filled, the inner bag is not accidentally broken by the opening / closing valve.

  FIG. 2 (a) is a perspective view showing another embodiment of the composite container with a cap of the present invention. The composite container with a plug (1 ′) is an outer box (2) made of the blank (10). The inner bag (3 ') to which the cap (9) consisting of a cap and a spout is attached is not shown in the figure, but the lengthwise ends of the top seal part are folded inward. Further, the cap (9) is stored in a state of projecting outward from the outer box (2), and (b) shows a state in which the top surface side of the outer box of the composite container with a cap of (a) is opened. It is a perspective view to show, the inclined top plate (16), the flap (25), the top plate (21), the top plate (22) and the flap (27) of the outer box (2) are each opened, the outer box ( 2) contains an inner bag (3 ′) to which a cap (9) made of a cap and a spout is attached, The stopper (9) protrudes outward from a hole (not shown) provided in the inclined top plate (16) of the outer box (2), and further on the upper side of the inner bag (3 '). The top seal portion (6) having a protruding portion (6a) with a protruding height of h is formed so that the central portion of the protruding portion (6a) is plugged from the center (4) in the width direction of the inner bag (3 ′) ( 9) It is provided so as to be located on the side.

  The numerical value of h of the convex portion (6a) of the top seal portion (6) is preferably 5 mm or more, and the central portion of the convex portion (6a) is more open than the center (4) in the width direction of the inner bag (3 ′). By providing the top seal part (6) so as to be located on the side of the stopper (9), the outer case with the lengthwise ends of the top seal part (6) of the inner bag (3 ') folded back inward Even when housed in (2), the folded portion of the inner bag (3 ') is difficult to see when viewed from the outside opening of the spout, and is spouted with a filling jig having an opening / closing valve at the nozzle tip. Even if the liquid content is filled from the opening, the inner bag is not accidentally broken by the opening / closing valve.

  FIG. 3 is an enlarged cross-sectional view showing the structure of the portion to which the cap of the composite container with a cap of the present invention is attached. The plug (9) is composed of a cap (7) and a spout (8). The spout (8) is a seal portion (horizontally protruding outward from the outer periphery for heat-sealing with the inner surface of the inner bag at the lower end of the hollow cylindrical portion (8a) having openings (not shown) at both ends. 8c) and a male threaded portion (8b) that projects horizontally outward from the outer periphery to the upper side. The seal portion (8c) of the spout (8) and the inner bag (3) The inner surface is attached by heat fusion. Similarly, the inner bag (3 ') is attached by heat-sealing the seal portion (8c) of the spout (8) and the inner surface of the inner bag (3').

It said outer box (2) is made from paperboard having a basis weight of 300 to 600 g / m ^2.

  For the cap (7) and spout (8) of the plug (9), polyethylene resin, polypropylene resin or the like is generally used.

  Fig.5 (a) is a sectional side view which shows one Embodiment of the laminated material used for the inner bag of the composite container with a stopper of this invention, and a laminated material (100) is a base material layer (101 in order in the thickness direction). ), An adhesive layer (102), and a sealant layer (103) are laminated, (b) is a side sectional view showing another embodiment of the laminated material, and the laminated material (100 ′) has a thickness of In this direction, a base material layer (101), an adhesive layer (102), an intermediate layer (104), an adhesive layer (105), and a sealant layer (103) are laminated. In addition, the structure which laminated | stacked the printing layer between the base material layer (101) and the adhesive bond layer (102) may be sufficient.

  The base material layer (101) is composed of a single layer film or a laminated film. Examples of the single layer film include a biaxially stretched polypropylene film having a thickness of 20 to 30 μm and a biaxially stretched nylon having a thickness of 15 to 25 μm. A biaxially stretched polyester film having a thickness of 6 to 12 μm can be used, and a laminated film is a vapor deposited thin film of at least an inorganic oxide such as silicon oxide or aluminum oxide on a biaxially stretched polyester film having a thickness of 6 to 12 μm. A gas barrier film in which a gas barrier film layer made of a layer or a barrier resin is laminated can be used.

  The intermediate layer (104) is laminated to improve the mechanical strength of the laminated material or to further improve the gas barrier properties. For example, the biaxially stretched nylon film, the unstretched nylon film, the aluminum foil, the ethylene A vinyl alcohol copolymer film, the gas barrier film described above, or the like is used.

  The sealant layer (103) is made of a polyolefin-based resin or a polyolefin-based resin film, and the types of resin include a low-density polyethylene resin, a medium-density polyethylene resin, a high-density polyethylene resin, a linear low-density polyethylene resin, Ethylene / vinyl acetate copolymer resin, ionomer resin, homopolypropylene resin, propylene / ethylene random copolymer resin, propylene / ethylene block copolymer resin, polypropylene / α-olefin copolymer resin, etc. are appropriately selected and laminated Lamination is performed by a known melt extrusion method or dry lamination method.

Generally, a polyurethane-based adhesive is used for the adhesive layer (102, 105). Usually, a two-component type is used in which a main component having a hydroxyl group and a curing agent having an isocyanate group are mixed in two components. The lamination is performed by a known gravure coating method. The coating amount is preferably 1 to 5 g / m ² (dry state).

  Below, the composite container with a stopper of this invention is demonstrated in detail along a specific Example.

A paperboard having a basis weight of 500 g / m ² is used as the material of the outer box (2), and the laminated material (100) used for the inner bag (3) is thick on one side of a biaxially stretched polyester film having a thickness of 12 μm. Through a polyurethane adhesive with a coating amount of 5 g / m ^{2 on} the gas barrier coating layer surface of a transparent barrier film in which a 50 nm thick silicon oxide thin film layer and a 0.5 μm thick gas barrier coating layer mainly composed of polyvinyl alcohol resin are laminated. 1 using a laminated film obtained by laminating a linear low density polyethylene film having a thickness of 60 μm, and using a polyethylene cap (7) and a spout (8) as a plug (9). And a top seal portion (5) having a width of 10 mm having a recess (5a) having a depth of 5 mm on the upper side of the inner bag, and the central portion of the recess (5a) being the inner bag (3 ) Width direction The composite container with a cap of the present invention was prepared by being provided 10 mm from the center of the plug and positioned on the side of the cap (9).

  Hereinafter, comparative examples of the present invention will be described.

  A composite container with a stopper for comparison was prepared in the same manner as in Example 1 except that a linear top seal portion having a width of 10 mm having no recess was provided on the upper side of the inner bag.

<Evaluation>
10,000 composite containers with a stopper of the present invention of Example 1 and 10,000 composite containers with a stopper for comparison of Example 2 were prepared, respectively, and each composite container with a stopper was inserted from the outside opening of the spout. The number of composite containers in which the inner bag can be seen was confirmed by observation. Furthermore, after filling each composite container with a stopper with water using a filling jig having an opening / closing valve at the tip of the nozzle from the opening of the spout, the top of the outer box is opened and the inner bag is torn The number of containers was confirmed. The results are shown in Table 1.

表１に示すように、実施例１の本発明の口栓付き複合容器を使用したものは、スパウトの開口部から内袋が見える数は１万個中５０個であり、また内袋が破けているものの数は０個であった。一方、実施例２の比較用の口栓付き複合容器を使用したものは、スパウトの開口部から内袋が見える数は１万個中５００個であり、また、内袋が破けているものの数は３個であった。

As shown in Table 1, the number of the inner bags that can be seen from the opening of the spout is 50 out of 10,000, and the inner bag is torn. The number of items was 0. On the other hand, the number of the inner bags that can be seen from the opening of the spout is 500 out of 10,000, and the number of the inner bags that are broken is the one using the comparative composite container with a cap of Example 2. There were three.

(A) is a perspective view which shows one Embodiment of the composite container with a stopper of this invention, (b) is the state when the top | upper surface side of the outer case of the composite container with a stopper of (a) is opened. It is a perspective view shown. (A) is a perspective view which shows other embodiment of the composite container with a stopper of this invention, (b) is the state when the top | upper surface side of the outer case of the composite container with a stopper of (a) is opened. FIG. It is an expanded sectional view which shows the structure of the part to which the stopper of the composite container with a stopper of this invention was attached. It is a top view which shows one Embodiment of the blank used for the outer box of the composite container with a stopper of this invention. (A) is a sectional side view showing one embodiment of a laminated material used for the inner bag of the composite container with a cap of the present invention, and (b) is a sectional side view showing another embodiment of the laminated material. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 '... Composite container 2 with a stopper ... Outer box 3, 3' ... Inner bag 4 ... Center of width direction of inner bag 5 ... Top seal part 5a ... Concave part 6 ... Top seal part 6a ... Convex part 7 ... Cap DESCRIPTION OF SYMBOLS 8 ... Spout 8a ... Hollow cylindrical part 8b ... Male thread part 8c ... Seal part 9 ... Plug 10 ... Blank 11 ... Front plate 12, 13 ... Side plate 14 ... Back plate 15 ... Adhesive plate 16 ... Inclined top plate 17, 18 , 19, 20 ... triangular folding plates 21 and 22 ... top plates 23 and 24 ... bottom plates 25, 26, 27, 28 ... flaps 30, 31, 32, 33 ... vertical ruled lines 34, 35, 36, 37, 38, 39, 40, 41 ... Horizontal ruled lines 42, 43, 44, 45 ... Oblique ruled lines 50 ... Holes 100, 100 '... Laminate material 101 ... Base material layer 102 ... Adhesive layer 103 ... Sealant layer 104 ... Intermediate layer 105 ... Adhesive Layer d ... depth h ... height

Claims (4)

  An inner bag provided with a cap and a spout cap is made of paper and has a rectangular parallelepiped outer box with an inclined top surface provided with a hole, and the plug protrudes outward from a hole on the inclined top surface of the outer box. A composite container with a cap that is housed in such a manner that the top seal portion of the same width having a concave portion of a predetermined depth is formed on the upper side of the inner bag, and the central portion of the concave portion is the width of the inner bag. It is provided so that it may be located in the stopper side from the center of a direction, The composite container with a stopper characterized by the above-mentioned.   An inner bag provided with a cap and a spout cap is made of paper and has a rectangular parallelepiped outer box with an inclined top surface provided with a hole, and the plug protrudes outward from a hole on the inclined top surface of the outer box. In the composite container with a cap, the top seal portion having a convex portion protruding inward on the upper side of the inner bag has a central portion of the convex portion. A composite container with a cap, wherein the composite container is provided so as to be positioned on the side of the cap from the center in the width direction of the bag.   The depth of the said recessed part is 5 mm or more, The composite container with a stopper of Claim 1 characterized by the above-mentioned.   The composite container with a cap according to claim 2, wherein the height of the convex portion is 5 mm or more.

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