JP6183017B2 - Spout member and bag with spout member - Google Patents

Description

  The present invention is provided with a cylindrical neck portion serving as an outlet flow path for contents, a top surface which is provided at a lower end portion of the neck portion and which is joined to a bag body for storing the contents, and a side opposite to the top surface It is related with the spout member which consists of a flange part which has a bottom face.

  A bag-in-box is a bag made of a plastic bag provided with a spout member, and a fluid content such as a liquid or gel, for example, various beverages such as concentrated fruit juice, mineral water, and alcoholic beverages. A packaging container that is filled with an outer packaging made of corrugated cardboard or the like.

  This bag-in-box has a structure in which a plastic bag housed in an exterior body has water resistance, chemical resistance, gas barrier property, etc. with respect to the contents, and the exterior body has rigidity necessary for transportation and storage. is there. The bag-in-box configured as described above has advantages that it does not need to be collected, is useful for labor saving and cost saving, and can be easily transported and stored to reduce distribution costs. In view of these advantages, this bag-in-box is used instead of the stainless steel tank that has been conventionally used to supply beverages or beverage concentrates to a drink dispenser.

  When the bag-in-box is used in a dispenser, the contents stored in the bag body are sucked from the spout member by the suction pump, and the contents are supplied to the dispenser. When the contents are sucked by the suction pump, the inner surface of the film forming the bag body at the position facing the spout member may be in close contact with the spout member. In such a case, the pouring channel of the spout member is closed by the inner surface of the film forming the bag body, and the contents of the bag body cannot be poured out to the end, and the use efficiency of the contents is improved. There is a problem that decreases.

  In order to solve this problem, a flange having a cylindrical neck portion serving as an outlet flow path for contents, a top surface joined to the bag body, and a bottom surface opposite to the top surface, provided below the neck portion. There is a spout member provided with a portion provided with a plurality of protrusions on the bottom surface of the flange portion (for example, Patent Document 1 and Patent Document 2). By adopting such a configuration, even if the inner surface of the film forming the bag body at a position facing the spout member is in close contact with the spout member, the protrusion is provided without providing a new member such as a dip strip. Thus, a gap is formed between the film and the bottom surface of the flange portion, and the contents can be sucked through the gap, and the contents can be poured out to the end.

JP-A-2005-231686 JP 2011-235933 A

  However, in Patent Literature 1 and Patent Literature 2, a protrusion is provided over the entire bottom surface of the flange portion, and a continuous flat surface that covers the outer periphery of the extraction channel is not formed. Therefore, when the bag body and the spout member are joined by thermal fusion, the bottom surface corresponding to any one of the crimping portions will have a gap between the projections and the projections, Due to the deformation of the protrusions and the presence of a gap, there is a problem in that pressure bonding cannot be performed by uniform pressure and heating, resulting in poor adhesion. In order to prevent this adhesion failure, it is conceivable to use a jig that forms a flat surface on the bottom surface side corresponding to the crimping part by fitting it to the protrusion on the bottom surface. Since it is necessary to align the spout member with the jig in order to fit the jig, the productivity of the bag including the spout member is deteriorated. Therefore, the present invention can efficiently pour out the contents contained in the bag body, and when the spout member is heat-sealed to the bag body, a flat crimping portion is ensured and uniform pressure and An object of the present invention is to provide a spout member that can be crimped by heating and that can be crimped by a conventional work process.

For this reason, the invention according to claim 1 is a cylindrical neck portion serving as a content extraction channel;
In the spout member which is provided at the lower end portion of the neck portion and includes a flange portion having a top surface joined to the bag body containing the contents and a bottom surface opposite to the top surface,
Provided on the bottom surface of the flange portion is a recess that is continuous with the entire circumference of the inner peripheral surface of the neck portion,
Provided on the bottom surface of the concave portion a plurality of protrusions arranged at intervals in the circumferential direction ,
While forming a gap between the protrusion and the outer peripheral end of the recess,
An annular flat surface continuous in the circumferential direction is provided on the bottom surface of the flange portion.

The invention according to claim 2 is a cylindrical neck portion serving as a content extraction channel;
In the spout member which is provided at the lower end portion of the neck portion and includes a flange portion having a top surface joined to the bag body containing the contents and a bottom surface opposite to the top surface,
Provided on the bottom surface of the flange portion is a recess that is continuous with the entire circumference of the inner peripheral surface of the neck portion,
Provided on the bottom surface of the concave portion a plurality of protrusions arranged at intervals in the circumferential direction ,
The projecting portion is connected to the inner peripheral end portion of the concave portion and the outer peripheral end portion of the concave portion, and
An annular flat surface continuous in the circumferential direction is provided on the bottom surface of the flange portion.

The invention according to claim 3 is the spout member according to claim 1 or 2,
The protruding portion protrudes from the bottom surface of the flange portion.

  Invention of Claim 4 is provided with the spout member in any one of Claims 1-3, It is a bag with a spout characterized by the above-mentioned.

According to invention of Claim 1, while being provided in the cylindrical neck part used as the extraction flow path of the content, and the lower end part of the said neck part, the top surface joined to the bag body which accommodates the said content And a flange portion having a bottom surface opposite to the top surface, the bottom surface of the flange portion is provided with a concave portion that is continuous with the entire circumference of the inner peripheral surface of the neck portion, and the bottom surface of the concave portion Provided with a plurality of protrusions arranged at intervals in the circumferential direction, forming a gap portion between the protrusion and the outer peripheral end of the recess, and in the circumferential direction on the bottom surface of the flange portion An annular flat surface that is continuous is provided.

  For this reason, it is possible to efficiently pour out the contents accommodated in the bag body, and when the spout member is heat-sealed to the bag body, a flat crimping portion is ensured, so that it is uniform. Crimping is possible by pressure and heating, and adhesion failure can be prevented. In addition, when the spout member is heat-sealed to the bag body, the alignment of the spout member and the crimping die is only the alignment of the flat surface of the spout member and the crimping die. Crimping is possible in the work process.

According to invention of Claim 2, while being provided in the cylindrical neck part used as the extraction flow path of the content, and the lower end part of the said neck part, the top surface joined to the bag body which accommodates the said content And a flange portion having a bottom surface opposite to the top surface, the bottom surface of the flange portion is provided with a concave portion that is continuous with the entire circumference of the inner peripheral surface of the neck portion, and the bottom surface of the concave portion A plurality of protrusions arranged at intervals in the circumferential direction, the protrusions being connected to the inner peripheral end of the recess and the outer peripheral end of the recess, and An annular flat surface continuous in the circumferential direction is provided on the bottom surface.

  For this reason, it is possible to efficiently pour out the contents accommodated in the bag body, and when the spout member is heat-sealed to the bag body, a flat crimping portion is ensured, so that it is uniform. Crimping is possible by pressure and heating, and adhesion failure can be prevented. In addition, when the spout member is heat-sealed to the bag body, the alignment of the spout member and the crimping die is only the alignment of the flat surface of the spout member and the crimping die. Crimping is possible in the work process.

  According to invention of Claim 3, since the said protrusion part protrudes from the bottom face of the said flange part, it is possible to pour out the contents accommodated in the bag body more reliably.

  According to invention of Claim 4, since it is a bag with a spout provided with the spout member in any one of Claims 1-3, the content accommodated in the bag body is poured out efficiently. It is possible to provide a spout-attached bag in which the bag body and the spout member are securely bonded.

It is a perspective view which shows an example of the spout member of this invention. It is a bottom view of the spout member in FIG. It is the AA line expanded sectional view of the spout member in FIG. It is a front view which shows an example of the bag with a spout of this invention. It is the BB sectional drawing of the bag with a spout in FIG. It is a figure explaining the connection to the dispenser of the bag in box using the bag with a spout of this invention. (A) is a perspective view which shows another example of the spout member of this invention, (b) is a bottom view of the spout member in (a), (c) is CC line of the spout member in (b) It is an expanded sectional view.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. 1 is a perspective view showing an example of the spout member of the present invention, FIG. 2 is a bottom view of the spout member in FIG. 1, and FIG. 3 is an enlarged sectional view taken along line AA of the spout member in FIG. It is. The spout member 10 includes a cylindrical neck portion 20 and a flange portion 30 provided at the lower end portion of the neck portion 20, and a cap 50 is detachably attached to the upper end portion of the neck portion 20.

  The neck portion 20 has a hollow cylindrical shape, and the hollow portion serves as an extraction channel 21 through which the contents pass. A male screw 22 is provided on the upper outer peripheral surface of the neck portion 20, and the cap 50 is detachably attached to the spout member 10 by a screw structure of a female screw provided on the inner surface of the outer wall portion and the male screw 22 of the neck portion 20. Attached to. An intermediate flange 23 is provided on the outer peripheral surface of the central portion of the neck portion 20.

  In addition, the attachment structure to the spout member 10 of the cap 50 is not limited to the above-mentioned structure, What is necessary is just the structure which can attach the extraction flow path 21 so that sealing is possible. Further, the neck 20 may have a configuration in which a check valve or the like is provided in the extraction flow path 21, and the cross-sectional shape of the extraction flow path 21 may be a square shape or the like. The intermediate flange 23 is used for fitting to an exterior body 70 described later. However, the intermediate flange 23 may be used for connection of a connection tube when sucking the contents, and is provided with a plurality of intermediate flanges. The shape, size, number, etc. can be designed as appropriate.

For example, when the intermediate flange 23 is used for fitting to an exterior body 70 that is a cubic box made of cardboard or the like, a spout is formed in a hole smaller than the outer diameter of the intermediate flange 23 formed in the exterior body 70 in advance. The neck 20 of the member 10 is inserted from the inside. Then, the exterior body 70 is fitted between the intermediate flange 23 and the base portion 24, and the spout member 10 is fixed to the exterior body 70. By fixing the spout member 10 in this manner, the spout member 10 is held in a state in which only a portion above the intermediate flange 23 protrudes outside the exterior body 70. Accordingly, it is possible to prevent the spout member 10 from entering the exterior body 70 by the intermediate flange 23 serving as a stopper. In addition, the structure which does not provide the intermediate | middle flange 23 may be sufficient.

  The flange portion 30 is provided at the lower end portion of the neck portion 20 via a base portion 24 protruding in the radial direction. The flange portion 30 has a disk shape and has a flat top surface 31 to be joined to a bag body 60 described later and a bottom surface 32 opposite to the top surface 31. By providing the flange portion 30 to the neck portion 20 via the base portion 24, the strength of the connection portion between the neck portion 20 and the flange portion 30 is increased. In addition, the shape of the flange part 30 is not limited to the above-mentioned shape, and if it has the flat top surface 31 joined to the bag body 60, and the bottom face 32 on the opposite side to this top surface 31, For example, the outer shape of the bottom view may be a square or a polygon.

  The bottom surface 32 of the flange portion 30 is provided with a recess 33 that is continuous with the entire inner peripheral surface of the neck portion 20.

A plurality of protrusions 36 are provided on the bottom surface of the recess 33. The protrusions have a substantially hemispherical shape, are in contact with the inner peripheral end portion 37 of the recess 33, and are disposed at substantially equal intervals in the circumferential direction. A gap 34 is formed in which the distance between the protrusion 36 and the outer peripheral end 35 of the recess 33 is a constant distance. As shown in FIG. 3, the protruding portion 36 protrudes from the bottom surface 32 of the flange portion 30.

  On the bottom surface 32 of the flange portion 30, a region between the outer peripheral end portion 38 of the flange portion 30 and the circle 39 inscribed by the outer peripheral end portion 35 of the concave portion 33 is an annular flat surface. That is, an annular flat surface 40 having a width W <b> 1 continuous in the circumferential direction is provided on the bottom surface 32 of the flange portion 30.

  The size of each component of the flange portion 30 is such that the depth C1 of the concave portion 33 is about 1 to 10 mm, the distance C2 between the protruding portion 36 and the outer peripheral end portion 35 of the concave portion 33 is about 1 to 10 mm, and the height of the protruding portion 36. H is about 1 to 10 mm, the distance L between adjacent protrusions 36 is about 1 to 15 mm, and the width W1 of the annular flat surface 40 is 1 mm or more, but is not limited thereto. It is designed appropriately depending on the type of contents, the size of the extraction channel, the material of the bag, and the like.

  Although the spout member 10 is made of synthetic resin, it can be heat-sealed with a bag body 60 to be described later, and there is no sanitary problem even if it comes into contact with the quality of the contents and the contents. If there is no particular limitation. In addition, it is desirable that it is formed by injection molding polypropylene, medium density or high density polyethylene, polyester, polycarbonate or the like in terms of excellent heat-fusibility, pressure heat sterilization, heat resistance, and the like.

  Next, the bag with a spout of the present invention will be described with reference to FIGS. 4 and 5. The bag body 60 to which the spout member 10 is attached is a flat bag of a four-side seal formed of a plastic film, and has a front part 61 and a back part 62, and a top seal part 63 and a side seal part at the peripheral part thereof. 64, 64, and the bottom seal portion 65, the front portion 61 and the back portion 62 are joined by heat sealing or the like.

  The front part 61 and the back part 62 are composed of an inner layer film 66 that forms the inner surface of the bag body 60 and an outer layer film 67 that forms the outer surface of the bag body 60 and has a two-layer structure.

  In addition, the bag body 60 is not limited to the above-mentioned shape, For example, the bag body 60 etc. which have the folding part folded inside by the both sides may be sufficient. Further, the structure of the bag body 60 may not be a two-layer structure, but may be a single-layer structure or a multilayer structure having two or more layers.

  The inner layer film 66 and the outer layer film 67 are not particularly limited plastic films. For example, a plastic film having heat sealing properties, a plastic film having strength and high heat resistance, a plastic film having gas barrier properties, and water vapor A plastic film having barrier properties, other plastic films, and the like can be used.

  Specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid Polyolefin resins such as ethyl copolymer, ethylene-acrylic acid copolymer, methylpentene resin, polybutene resin, polyvinyl chloride resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer, polyacryl Resin, polyacrylonitrile resin, polystyrene resin, polyester resin, polyamide resin, polycarbonate resin, polyvinyl alcohol, saponified ethylene-vinyl acetate copolymer, fluorine resin, gen resin, Consists of polyacetal resin Monolayer or multilayer films formed by laminating them are can be appropriately selected and used.

Next, a method for attaching the spout member 10 to the bag body 60 will be described. The neck portion 20 of the spout member 10 is inserted from the inside into a hole (not shown) formed in the front portion 61 of the bag body 60 in advance, and the top surface 31 of the flange portion 30 and the inner surface of the front portion 61 of the bag body 60 are brought into contact with each other. Make contact. Using a crimping die (not shown), the top surface 31 of the flange portion 30 and the inner surface of the front portion 61 of the bag body 60 are heat-sealed. At this time, a portion corresponding to the annular flat surface 40 which is formed in the bottom surface 32 of the flange portion 30 and which is continuous in the circumferential direction is pressed and pressed. Therefore, since the entire surface of the portion corresponding to the crimping portion is a flat surface, it can be crimped by uniform pressure and heating, and adhesion failure can be prevented. In addition, since it is not necessary to make the portion corresponding to the crimping portion a flat surface by using a jig that fits into the protrusion 36 and the jig and the spout member 10 are not aligned, Crimping is possible in the work process.

  Here, the bottom surface 32 of the flange portion 30 is a flat surface with no protrusions or the like formed thereon. Therefore, since the alignment between the spout member 10 and the crimping die can be performed including the outer peripheral end portion 38 of the flange portion 30, the alignment operation can be omitted and the operation time can be shortened.

  Next, use of the bag with a spout in which the spout member 10 described above is attached to the bag body 60 will be described. The bag with a spout, in which the contents are accommodated, is accommodated in an exterior body 70 which is a cubic box made of cardboard or the like. The neck portion 20 of the spout member 60 is inserted from the inside into a hole (not shown) formed in advance in the exterior body 70, the exterior body 70 is fitted between the intermediate flange 23 and the base portion 24, and the spout is inserted into the exterior body 70. The member 10 is fixed. Accordingly, only the portion above the intermediate flange 23 of the spout member 10 is projected to the outside of the exterior body 70 and used as the bag-in-box 71. For example, as shown in FIG. 6, when used in a dispenser 80 that provides a beverage, a tube connected to a suction pump 81 is connected to the spout member 10. The contents are sucked by the suction pump 81 and supplied to the dispenser 80 from the extraction channel 21 through the connection tube and the suction pump 81.

When the contents are sucked by the suction pump 81 and the contents in the bag body 60 are reduced, the inner surface of the back surface portion 62 of the bag body 60 located opposite to the spout member 10 is formed on the flange portion 30 of the spout member 10. Close contact with the bottom surface 32. At this time, the inner surface of the back surface portion 62 of the bag body 60 is in close contact with the upper portion of the protruding portion 36, but the inner layer film 66 has a certain degree of rigidity, so that the inner layer film 66 does not enter the gap portion 34. A space is formed between the protrusion 34 adjacent to the recess 34 and the recess 33. Moreover, since the protrusion part 36 protrudes rather than the bottom face 32 of the flange part 30, the inner layer film 66 is lifted in the location in which the protrusion part 36 is provided. Due to the rigidity of the inner layer film 66, wrinkles starting from the protrusions 36 are generated in the inner layer film 66 on the annular flat surface 40 formed in the circumferential direction on the bottom surface 32. Therefore, the contents can flow out into the extraction channel 21 using the space between these spaces and wrinkles as a channel, and the channel that continues to the extraction channel 21 is formed by the inner surface of the back surface portion 62 of the bag body 60. The content can be poured out to the end without being closed, and the content can be poured out efficiently. Even when the protruding portion 36 does not protrude from the bottom surface 32 of the flange portion 30, wrinkles are generated in the inner layer film 66 on the annular flat surface 40 that is continuous in the circumferential direction due to the rigidity of the inner layer film 66. Therefore, the flow path leading to the pouring flow path 21 is not closed by the inner surface of the back surface portion 62 of the bag body 60.

  By the way, the spout member 10 shown in FIGS. 1 to 3 is provided with eight substantially hemispherical projections 36. The number, shape, size, height, and position of the projections 36 are provided. Is not limited to this configuration. An annular flat surface 40 that is continuous in the circumferential direction may be provided on the bottom surface 32 of the flange portion 30. Note that the outer shape of the annular flat surface 40 does not have to be a circular annular flat surface, and may be, for example, an annular flat surface having a rectangular outer shape. The width W1 of the annular flat surface 40 does not need to be constant, but facilitates alignment between the spout member 10 and the crimping die when the spout member 10 is heat-sealed to the bag body 60. Therefore, it is desirable that the width is constant, and it is further desirable that the flat surface 40 has a circularly symmetric shape about the central axis O1 of the neck portion 20 (the central axis of the extraction flow path 21). This is because with such a shape, the alignment can be performed without considering the circumferential direction of the spout member 10.

Further, the shape of the protrusion 36 may be a triangular shape or a quadrangular shape. Incidentally, butt raising portion 36, since the inner surface abutting the rear portion 62 of the bag 60, in order not to damage the bag 60, a portion abutting the shape without the edge as a curved surface is desirable. In addition, the clearance part 34 leads the content which flows into the extraction | pouring flow path 21 suitably through the clearance gap of the wrinkles which generate | occur | produces in the back surface part 62 of the bag body 60 by the protrusion part 36 to the extraction | pouring flow path 21 It is. Therefore, the interval between the protrusion 36 and the outer peripheral end 35 of the recess 33 due to the gap 34 need not be constant. For example, the structure which does not provide the clearance gap part 34 may be sufficient, and it is good also as a structure as shown to Fig.7 (a), FIG.7 (b), and FIG.7 (c).

  The spout member 110 has a configuration in which, in the spout member 10 described above, the gap portion 34 is not provided, and the protruding portion 36 is connected to the inner peripheral end portion 37 of the concave portion 33 and the outer peripheral end portion 35 of the concave portion 33. It is. The protrusion 136 in the spout member 110 has a semicircular arc shape with a cross-section projecting upward, and is connected to the inner peripheral end 137 of the recess 133 and the outer peripheral end 135 of the recess 133. With such a configuration, the shape of the spout member 110 is simplified and the productivity is improved. When the contents stored in the bag body 60 are sucked by the suction pump, the inner layer film 66 has a certain degree of rigidity, so that a space is formed between the adjacent protrusions 136 of the recess 133. Further, since the protruding portion 136 protrudes from the bottom surface 132 of the flange portion 130, the inner layer film 66 is lifted up at a position where the protruding portion 136 is provided. Due to the rigidity of the inner layer film 66, wrinkles starting from the protrusions 136 are generated in the inner layer film 66. Therefore, the contents can flow out into the extraction channel 121 using the space between these spaces and the wrinkles as a channel, and the channel continuing to the extraction channel 121 is formed by the inner surface of the back surface portion 62 of the bag body 60. It will not be closed. In addition, in the bottom face 132 of the flange part 130 of the spout member 110, the area | region between the outer peripheral end part 138 of the flange 130 and the outer peripheral end part 135 of the recessed part 133 is a cyclic | annular flat surface. That is, the bottom surface 132 of the flange portion 130 is provided with an annular flat surface 140 having a width W2 continuous in the circumferential direction.

A bag with a spout having the configuration shown in FIGS. 4 and 5 in which the spout member 10 shown in FIGS. 1 to 3 is attached to the bag body 60 was created, and a bag-in-box 71 having the configuration shown in FIG. The contents were supplied to the dispenser 80 using this bag-in-box. Here, the dimensions of each part of the spout member 10 are as follows: the outer diameter of the flange portion 30 is φ63.5 mm, the cross section of the pour channel 21 is φ30 mm, the depth C1 of the recess 33 is 2.5 mm, the protrusion 36 and the recess The distance C2 from the outer peripheral end 35 of the rod 33 is 2.5 mm, the outer diameter of the protrusion 36 is 3 mm, and the height H of the protrusion 36 is 3 mm. The outer dimensions of the bag body 60 are 480 mm long and 455 mm wide, and have a two-layer structure. The inner layer film 66 is a single layer film of LLDPE, and the outer layer film 67 is a laminated film of ONY and LLDPE. The contents were used undiluted juice concentrate. When producing the bag with the spout, the pouring member 10 was heat-sealed to the bag body 60, but it could be crimped by uniform pressure and heating, and no adhesion failure occurred. In addition, the crimping | compression-bonding operation was performed by the same process as the conventional work process. Further, although the contents are supplied to the dispenser 80, the contents in the bag body 60 are poured out to the end without the flow path leading to the pouring flow path 21 being closed by the inner surface of the back surface portion 62 of the bag body 60. We were able to.

  The present invention is not limited to a spout member and a bag with a spout used in a bag-in-box, but can be applied to a spout member and a bag with a spout used in a bag body of any plastic film. .

DESCRIPTION OF SYMBOLS 10,110 Outlet member 20,120 Neck part 21,121 Outlet flow path 30,130 Flange part 31 Top surface 32,132 Bottom surface 33,133 Concave part 34 Clearance part 36,136 Projection part 40,140 Flat surface 60 Bag body

Claims (4)

A cylindrical neck that serves as a flow path for the contents;
In the spout member which is provided at the lower end portion of the neck portion and includes a flange portion having a top surface joined to the bag body containing the contents and a bottom surface opposite to the top surface,
Provided on the bottom surface of the flange portion is a recess that is continuous with the entire circumference of the inner peripheral surface of the neck portion,
Provided on the bottom surface of the concave portion a plurality of protrusions arranged at intervals in the circumferential direction ,
While forming a gap between the protrusion and the outer peripheral end of the recess,
A spout member characterized by providing an annular flat surface in the circumferential direction on the bottom surface of the flange portion. A cylindrical neck that serves as a flow path for the contents;
In the spout member which is provided at the lower end portion of the neck portion and includes a flange portion having a top surface joined to the bag body containing the contents and a bottom surface opposite to the top surface,
Provided on the bottom surface of the flange portion is a recess that is continuous with the entire circumference of the inner peripheral surface of the neck portion,
Provided on the bottom surface of the concave portion a plurality of protrusions arranged at intervals in the circumferential direction ,
The projecting portion is connected to the inner peripheral end portion of the concave portion and the outer peripheral end portion of the concave portion, and
A spout member characterized by providing an annular flat surface in the circumferential direction on the bottom surface of the flange portion.   The spout member according to claim 1, wherein the protruding portion protrudes from a bottom surface of the flange portion. A bag with a spout, comprising the spout member according to any one of claims 1 to 3.

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