JP2022137846A - Spouting tool - Google Patents

Abstract

To provide a spouting tool that has a beautiful cut end of a gas barrier member.SOLUTION: A spouting tool 1 is attached to an opening part of a bag-shaped container storing a fluid inside. The spouting tool 1 is equipped with a spouting portion 2 that forms a channel of a fluid, a lid portion 4 that has a bottomed lid body portion 41 detachably installed by screwing with the spouting portion 2 and inserted in an inner peripheral surface of the spouting portion 2, and a sheet body 5 that is pasted from a lower surface 32a of the spouting portion 2 to a bottom surface 45a of the lid body portion 41. The spouting portion 2 and the lid body portion 41 are provided so as to form a gap G between an inner peripheral end Ei of the lower surface 32a of the spouting portion 2 and an outer peripheral end Ep of a bottom surface 45a of the lid body portion 41. The size of the gap G in a first direction is set to be smaller than the size of the gap G in a second direction.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a spout fitting attached to an opening of a container containing fluid therein.

Conventionally, a pouring spout tool attached to an opening of a container such as a packaging bag is known. The spout is configured to prevent external air such as oxygen from flowing into the container.
For example, Patent Literature 1 discloses a spout tool that includes a spout that forms a flow path for fluid therein, and a cap that is detachably attached to the spout by screwing. The spout has a cylindrical body and a container joining tube integrally connected to the lower part of the cylindrical body. The container-joining cylinder includes a cylindrical base that is integrally connected to the cylindrical main body, and projecting pieces that project radially outward from the outer surface of the cylindrical base. The interiors of the cylindrical body and the cylindrical base form a fluid flow path. Also, the cap has a bottomed cylindrical plug that is inserted into the cylindrical body and the cylindrical base to block the flow path inside the spout.

In the spout having such a structure, the oxygen that has flowed into the interior from the outer surface of the cylindrical body flows axially through the interior of the cylindrical body and into the container. In the spout tool described in Patent Document 1, the outer peripheral surface of the stopper of the cap and the inner peripheral surface of the cylindrical base of the spout are brought into close contact with each other in order to suppress the inflow of oxygen.

JP 2018-90271 A

The gas barrier function imparted to the spout tool of Patent Document 1 is not sufficient because oxygen may permeate the spout tool and flow into the container. Accordingly, the present inventors have developed a spout tool in which a sheet-like gas barrier member is attached to the lower end of the stopper and the lower end of the container-joining cylinder.

When the container is to be opened, the cap is rotated to tear the sheet-like gas barrier member at a predetermined position, thereby opening the container. If the timing at which the gas barrier member starts to tear is later than the timing at which the turning operation of the cap is started in order to open the container, the gas barrier member may stretch excessively before the gas barrier member is torn. . In this case, a torn piece extending like a fiber is formed at the cut end of the gas barrier member of the plug or container-joining tube. As a result, in a spout tool having a gas barrier member that has been torn after being stretched too much, the cut end of the gas barrier member may not be clean.

In order to solve the above-mentioned problems, the present invention provides a pouring outlet tool attached to an opening of a container containing a fluid therein, comprising: a tubular pouring part forming a flow path for the fluid; a lid portion having a bottomed lid body portion that is detachably mounted by screwing with the ejection portion and is inserted into the inner peripheral surface of the pouring portion; and a gas barrier member attached to the bottom surface, wherein the pouring portion and the lid main body have a gap formed between the inner peripheral end of the lower surface of the pouring portion and the outer peripheral end of the bottom surface of the lid main body. When the lower surface of the spout portion and the bottom surface of the lid main body are viewed, a direction in which an imaginary straight line extending including the center of the lid main body extends is defined as a first direction, and the lid main body When the second direction is a direction in which a virtual straight line extending including the center of the is also set small.

When the container is to be opened, the lid moves upward by being rotated with respect to the spout. When the lid portion moves upward with respect to the pouring portion, the gas barrier member attached to the lid portion is lifted with respect to the gas barrier member attached to the pouring portion. In this case, force acts on the gas barrier member with the point of action being the inner peripheral end of the lower surface of the spout portion. According to the above configuration, the size of the gap in the first direction is set smaller than the size of the gap in the second direction. Therefore, when the container is unsealed, the outer peripheral edge of the bottom surface of the lid main body in the first direction is closer to the inner peripheral edge of the lower surface of the spout than the outer peripheral edge of the bottom surface of the lid main body in the second direction. It will be positioned more directly above the edge. Therefore, the gas barrier member attached to the inner peripheral end of the lower surface of the spout portion in the first direction is positioned directly above the gas barrier member attached to the inner peripheral end of the lower surface of the spout portion in the second direction. The torsion due to the rotation operation acts while being pulled up toward the body. In this case, when the container is unsealed, the force acting on the gas barrier member at the inner peripheral end of the lower surface of the pouring portion can be varied in the circumferential direction of the inner peripheral end. As a result, the delay in the timing at which the gas barrier member starts to be torn with respect to the timing at which the turning operation of the lid portion is started in order to open the container can be suppressed. Excessive stretching of the member can be suppressed. Since the gas barrier member can be suitably torn before the gas barrier member is stretched too much, the cut end of the torn gas barrier member can be made clean.

The fluid contained in the container is not limited to liquids and viscous substances, and includes solids (solid substances, granules, powders, etc.).
Said structure WHEREIN: It is preferable that the inner peripheral edge of the lower surface of the said pouring part and the outer peripheral edge of the bottom surface of the said cover main-body part are contacting in said 1st direction.

According to the above configuration, when the container is unsealed, the outer peripheral end of the bottom surface of the lid body portion in the first direction is positioned directly above the inner peripheral end of the lower surface of the pouring portion. . Therefore, the gas barrier member attached to the inner peripheral end of the lower surface of the pouring portion in the first direction is twisted by the turning operation while being pulled upward.

In the above configuration, the pouring portion has a cylinder main body and a mounting portion integrally connected to the cylinder main body at a lower portion of the cylinder main body, and the mounting portion is integrated with the cylinder main body. and two protrusions projecting radially outward from the attachment body, wherein the first direction is perpendicular to the direction in which the protrusions project. is preferred.

According to the above configuration, the mounting portion is thinner in the direction orthogonal to the direction in which the protrusion protrudes than in the direction in which the protrusion protrudes. Therefore, in the direction orthogonal to the direction in which the projecting portion protrudes, it is easier for the person who performs the process of unsealing the container to grip the mounting portion compared to the direction in which the projecting portion projects. And since the 1st direction is set as the direction which intersects perpendicularly with the direction where an overhang part projects, it can control that an attachment part becomes large in the 1st direction. As a result, it becomes easy to maintain the ease of gripping the mounting portion by the person who is unsealing the container.

According to the present invention, it is possible to obtain a pouring spout having a clean cut end of the gas barrier member.

The perspective view of the spout tool of this embodiment. FIG. 4 is a vertical cross-sectional view of the spout tool; FIG. 3 is a bottom view of the spout tool with the sheet body removed. The bottom view of the spout tool in the state which removed the sheet|seat body in other embodiment.

Hereinafter, a spout tool embodying the present invention will be described.
The pouring spout 1 of this embodiment is attached to the opening of a bag-like container made of synthetic resin. The pouring spout 1 forms a channel for pouring out the fluid accommodated inside the bag-like container. The bag-like container is configured in a bag shape by bonding two sheet members facing each other. The spout 1 is adhesively fixed by heat sealing between the opening of the bag-like container, that is, between two sheet members facing each other. The bag-like container of this embodiment is formed of a multi-layer structure sheet in which an aluminum foil layer is laminated between a plurality of thin polyethylene sheets. In the following description, up and down and left and right shown in FIG.

As shown in FIGS. 1 and 2, the pouring spout 1 is detachably attached to the pouring part 2 by screwing the pouring part 2, which forms a fluid flow path C therein, with the pouring part 2. and a sheet body 5 as a gas barrier member.

<Pour out part 2>
As shown in FIG. 2, the extraction part 2 forms the flow path C inside. The pouring portion 2 includes a cylindrical main body portion 20 formed over the entire length of the pouring portion 2 and a mounting portion 30 integrally formed with the main body portion 20 at the lower portion of the main body portion 20 . ing. The inner peripheral surface of the cylinder body portion 20 is formed in a straight shape whose diameter does not change in the vertical direction. The inner peripheral surface of the cylinder body portion 20 is formed as a flat surface without unevenness. The vertical direction is the axial direction of the cylinder main body 20, and the left-right direction is the radial direction of the cylinder main body 20. As shown in FIG.

A male screw 21 is formed on the outer peripheral surface of the upper portion of the cylinder body portion 20 so as to extend in the circumferential direction. An annular protrusion 22 that protrudes in the radial direction is formed along the entire circumference of the outer peripheral surface of the vertical intermediate portion of the cylinder main body 20 . Furthermore, a plurality of ratchets 23 are formed on the upper portion of the annular protrusion 22 .

As shown in FIGS. 1 and 2, the mounting portion 30 includes a mounting body portion 30a integrally connected to the cylinder body portion 20 at a lower portion of the cylinder body portion 20, and a 2-axis mounting body portion 30a protruding radially outward from the mounting body portion 30a. It has two projecting portions 30b. The two protruding portions 30b protrude in the left-right direction. That is, one of the two projecting portions 30b protrudes opposite to the other projecting portion of the two projecting portions 30b with the mounting body portion 30a interposed therebetween. The mounting portion 30 has a substantially rhombic shape when viewed from above.

One of the two projecting portions 30b is composed of four substantially triangular plate-like plate portions projecting in one of the left and right directions from the mounting main body portion 30a, and three connecting portions connecting the respective plate portions. and

The four plate portions are an upper plate portion 31 provided on the upper side, a lower plate portion 32 provided on the lower side, and two intermediate plate portions 33 provided between the upper plate portion 31 and the lower plate portion 32. It is composed of The upper plate portion 31, the lower plate portion 32, and the two intermediate plate portions 33 are provided parallel to each other in the vertical direction. Side surfaces of the upper plate portion 31, the lower plate portion 32, and the two intermediate plate portions 33 are portions to which the opening portion of the bag-like container is adhered and fixed. Each side surface of the upper plate portion 31, the lower plate portion 32, and the two intermediate plate portions 33 is formed as a flat surface without unevenness. The lower plate portion 32 and the two intermediate plate portions 33 have the same shape and size. On the other hand, the upper plate portion 31 has a slightly larger shape than the lower plate portion 32 and the two intermediate plate portions 33 . The upper plate portion 31, the lower plate portion 32, and the two intermediate plate portions 33 are tapered away from the mounting body portion 30a, that is, as they approach the ends on the side opposite to the mounting body portion 30a. The tip of the upper plate portion 31 on the side opposite to the mounting body portion 30a forms an end face. The tip of the lower plate portion 32 on the side opposite to the mounting main body portion 30a forms an edge extending in the vertical direction. The same applies to the intermediate plate portion 33 having the same shape as the lower plate portion 32 .

The three connecting portions are a connecting portion 34 provided between the upper plate portion 31 and the intermediate plate portion 33, a connecting portion 35 provided between the two intermediate plate portions 33, and the intermediate plate portion 33 and the lower plate portion. 32 and a connecting portion 36 provided between them. Each connecting portion 34, 35, 36 has the same shape. The connecting portion 34 protrudes radially outward, that is, in one of the left and right directions from the mounting main body portion 30a. The connecting portion 34 has a rectangular plate shape. The upper surface of the connecting portion 34 is connected to the lower surface of the upper plate portion 31 . The lower surface of the connecting portion 34 is connected to the upper surface of the intermediate plate portion 33 . The plate thickness direction of the connecting portion 34 is a direction orthogonal to the vertical direction and the horizontal direction. The end of the connecting portion 34 on the side opposite to the mounting main body portion 30a forms an edge extending in the vertical direction. The edge of the tip of the connecting portion 34 continues to the edge of the tip of the upper plate portion 31 and the edge of the tip of the intermediate plate portion 33 . The same applies to the connecting portions 35 and 36 having the same shape as the connecting portion 34 . Similarly to one of the two projecting portions 30b, the other projecting portion of the two projecting portions 30b is also a substantially triangular plate projecting in the other lateral direction from the mounting body portion 30a. It has four shaped plate portions and three connecting portions connecting between the plate portions.

The lower surface 32a of the lower plate portion 32 is a surface to which the sheet body 5 is attached together with the bottom surface 45a of the lid body portion 41 of the lid portion 4, which will be described later. The lower surface 32a of the lower plate portion 32 is formed as a flat surface that is horizontal in the left-right direction and has no irregularities.

Adhesive sheet pieces 37 projecting in the left-right direction are provided at the ends of the two projecting portions 30b, respectively. The adhesive sheet piece 37 has a rectangular plate shape. The plate thickness of the adhesive sheet piece 37 is set smaller than the plate thicknesses of the upper plate portion 31 , the lower plate portion 32 and the two intermediate plate portions 33 . One end of the adhesive sheet piece 37 in the left-right direction is connected to the tips of the two intermediate plate portions 33 and the three connecting portions 34 . The adhesive sheet piece 37 is interposed so as to face the two sheet members constituting the bag-like container in the plate thickness direction. The adhesive sheet piece 37 is provided to increase the adhesive strength when the two sheet members forming the bag-like container are adhered and fixed by heat sealing. The outer peripheral surfaces of the lower plate portion 32 and the two intermediate plate portions 33 and both side surfaces of the adhesive sheet piece 37 in the plate thickness direction are portions to which the opening of the bag-like container is adhered and fixed by heat sealing.

<Lid 4>
The lid portion 4 includes a bottomed cylindrical lid main body portion 41 inserted inside the pouring portion 2 , a flange portion 42 extending radially outward from the upper end portion of the lid main body portion 41 , and an outer portion of the flange portion 42 . and an outer cylindrical portion 43 extending downward from one end.

As shown in FIG. 2 , the lid main body 41 is formed as a hollow body having a cylindrical peripheral wall 44 and a bottom wall 45 provided at the lower edge of the peripheral wall 44 . The upper surface of the lid body portion 41 is open. The bottom wall 45 of the lid main body 41 closes the channel C of the cylinder main body 20 and the mounting portion 30 by inserting the lid main body 41 inside the pouring portion 2 .

The inner peripheral surface of the peripheral wall 44 of the lid main body 41 is formed in a straight shape whose diameter does not change in the vertical direction. A projection 46 projecting in the radial direction is formed over the entire circumference on the upper portion of the outer peripheral surface of the peripheral wall 44 . A lower end portion of the projecting portion 46 is formed as a tapered surface 46a whose diameter decreases downward. The outer peripheral surface of the peripheral wall 44 is formed in a straight shape in which the diameter does not change in the vertical direction at the portion where the protrusion 46 is not formed. When viewed from above and below, the peripheral wall 44 has a circular outer peripheral surface. The inner peripheral surface of the peripheral wall 44 is formed as a flat surface without unevenness. A bottom surface 45a of the bottom wall 45 is formed as a flat surface that is horizontal in the horizontal direction and has no unevenness.

The outer diameter of the peripheral wall 44 of the lid main body 41 is slightly smaller than the inner diameters of the cylinder main body 20 and the mounting portion 30 of the pouring portion 2 . As a result, when the lid portion 4 is attached to the pouring portion 2 , there is a gap between the outer peripheral surface of the peripheral wall 44 of the lid main body portion 41 and the inner peripheral surfaces of the cylinder main body portion 20 and the mounting portion 30 of the pouring portion 2 . A gap G is formed in . That is, as shown in FIG. 3, when the lower surface 32a of the spout portion 2 and the bottom surface 45a of the lid body portion 41 are viewed from below, the inner peripheral end Ei of the lower surface 32a of the spout portion 2 and the lid body portion 41 A gap G is formed between the bottom surface 45a and the outer peripheral edge Ep. Moreover, as shown in FIG. 2, the projection length of the protrusion 46 formed on the upper portion of the peripheral wall 44 is substantially equal to the size of the gap G. As shown in FIG. Note that the size of the gap G can be changed as appropriate. The size of the gap G can be set in consideration of how easily the sheet body 5 is torn by the inner peripheral edge Ei of the lower surface 32a of the pouring portion 2 . Also, the projection length of the protrusion 46 may be different from the size of the gap G, and can be changed as appropriate. The inner peripheral surface of the mounting main body portion 30a is formed as a surface without irregularities. The size of the gap G is set to approximately 0 to 0.1 mm over the entire circumference. In this embodiment, the size of the gap G is not uniform over the entire circumference, but differs in the circumferential direction.

As shown in FIG. 3, when the lower surface 32a of the pouring portion 2 and the bottom surface 45a of the lid main body 41 are viewed from below, the direction in which an imaginary straight line extending including the center of the lid main body 41 extends is defined as a first direction D1. . The first direction D1 is a direction perpendicular to the left-right direction and a direction perpendicular to the direction in which the overhanging portion 30b protrudes. Further, when the lower surface 32a of the pouring portion 2 and the bottom surface 45a of the lid body portion 41 are viewed from below, the direction in which the imaginary straight line extending including the center of the lid body portion 41 extends is different from the first direction D1. Let it be the second direction D2. The second direction D2 is the left-right direction, and is the direction in which the projecting portion 30b protrudes. The first direction D1 and the second direction D2 are orthogonal.

When viewed from the axial direction of the spout portion 2, the inner peripheral end Ei of the lower surface 32a of the spout portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41 are in contact with each other in the first direction D1. That is, the size of one of the gaps G between the inner peripheral end Ei of the lower surface 32a of the spout portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid main body 41 in the first direction D1, and the size of the gap G in the first direction D1. The size of the other gap G between the inner peripheral end Ei of the lower surface 32a of the protruding portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41 is "zero (zero value)".

When viewed from the axial direction of the spout portion 2, the inner peripheral end Ei of the lower surface 32a of the spout portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid main body portion 41 are separated from each other in the second direction D2. That is, the size of one of the gaps G between the inner peripheral surface of the spout portion 2 and the outer peripheral surface of the lid body portion 41 in the second direction D2, and the inner peripheral surface of the spout portion 2 in the second direction D2. The size of the other gap G with respect to the outer peripheral surface of the lid main body 41 is a value larger than "zero (zero value)". In the present embodiment, the size of one gap G between the inner peripheral end Ei of the lower surface 32a of the spout portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid main body 41 in the second direction D2 and the second direction The size of the other gap G between the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41 at D2 is set to be substantially the same. Therefore, the size of the gap G in the first direction D1 is set smaller than the size of the gap G in the second direction D2. In this embodiment, when the lower surface 32a of the pouring portion 2 and the bottom surface 45a of the lid main body portion 41 are viewed from below, the shape of the outer peripheral surface of the lid main body portion 41 is substantially circular. The peripheral surface has a substantially elliptical shape that is larger in the left-right direction than the lid body portion 41 . The shape of the inner peripheral surface of the pouring portion 2 and the shape of the outer peripheral surface of the lid body portion 41 can be changed as appropriate.

As shown in FIG. 2 , the vertical length of the lid main body 41 is set to match the vertical lengths of the tube main body 20 and the mounting portion 30 of the pouring portion 2 . Specifically, the length from the lower surface of the flange portion 42 to the bottom surface 45a of the bottom wall 45 in the lid main body portion 41 is the length from the upper end surface of the cylinder main body portion 20 to the lower surface 32a of the lower plate portion 32 of the mounting portion 30. equal to the length. As a result, when the lid portion 4 is attached to the pouring portion 2 , the upper end surface of the cylinder main body portion 20 of the pouring portion 2 contacts the lower surface of the flange portion 42 of the lid portion 4 and the bottom surface of the bottom wall 45 . 45 a is flush with the lower surface 32 a of the lower plate portion 32 .

The outer cylindrical portion 43 is formed in a shape that surrounds the lid body portion 41 while forming a predetermined gap from the outer peripheral surface of the lid body portion 41 . The outer cylindrical portion 43 has a cylindrical shape concentrically with the lid body portion 41 . A female screw 47 to be screwed with the male screw 21 of the tube main body portion 20 of the pouring portion 2 is provided on the inner peripheral surface of the outer tube portion 43 so as to extend in the circumferential direction.

As shown in FIGS. 1 and 2 , a cap ring 48 is connected to the lower end of the outer cylindrical portion 43 and constitutes a known tamper evidence function for certifying the opening/closing history of the lid portion 4 . The cap ring 48 is positioned between the lower end edge of the outer cylinder part 43 and the annular protrusion 22 of the cylinder body part 20 so as to correspond to the position of the ratchet 23 provided on the cylinder body part 20 of the pouring part 2 . and is broken when the lid portion 4 is rotated in the opening direction to open the lid. This indicates that the bag-like container is in an unsealed state.

The pouring part 2 and the lid part 4 are molded from a conventionally known synthetic resin material. Examples of known synthetic resin materials include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, and ethylene-acrylic acid. Examples thereof include thermoplastic resins such as copolymers, ethylene-methyl acrylate copolymers, and ethylene-propylene copolymers.

<Sheet body 5>
As shown in FIGS. 2 and 3 , the sheet body 5 is attached to the lower surface 32 a of the lower plate portion 32 of the mounting portion 30 and the bottom surface 45 a of the bottom wall 45 of the lid body portion 41 . The sheet body 5 is formed in a shape slightly larger than the outer peripheral shape of the lower surface 32a. The peripheral portion of the sheet body 5 is provided with a bent portion 50 that is adhered and fixed to the outer peripheral surface of the mounting portion 30 while being folded upward along the outer peripheral surface of the mounting portion 30 . In this embodiment, the bent portion 50 is adhesively fixed to the lower portion of the outer peripheral surface of the lower plate portion 32 over the entire circumference. The bent portion 50 is provided along the entire peripheral edge of the sheet body 5 . Thereby, the sheet body 5 is attached in such a manner as to cover the entire lower surface of the pouring spout 1 .

The sheet body 5 is composed of a multi-layer structure sheet composed of a plurality of thin-layered sheets. The sheet body 5 includes a base material layer, a gas barrier layer laminated on the lower surface side of the base material layer, and a thermal adhesive layer laminated on the upper surface side of the base material layer. Although the material of the sheet body 5 is not particularly limited, for example, a thermoplastic resin layer such as a polyethylene layer, a polypropylene layer, a polyethylene terephthalate layer, an ethylene vinyl-alcohol copolymer layer, an acrylic layer, an aluminum foil layer, and a ceramic deposited film layer. etc. can be used. When a polyethylene layer is employed as the material of the sheet body 5, it is preferable to incorporate high-density polyethylene into the polyethylene layer. When high-density polyethylene is contained, it is possible to suppress excessive stretching of the sheet body 5 when the bag-like container is opened, compared to when low-density polyethylene is contained. In addition, in FIG.1 and FIG.2, the thickness of the sheet|seat body 5 is exaggerated and illustrated.

An example of a method of attaching the sheet body 5 to the lower surface of the spout 1 will be described below.
In attaching the sheet body 5 to the lower surface of the spout 1, a bonding process, a cutting process, and a folding process are performed in order. The adhesion step is a step of adhering the multilayer structure sheet forming the sheet body 5 to the spout tool 1 . The cutting step is a step of cutting out a part to be adhered to the spout tool 1 from the multilayer structure sheet adhered in the adhering step. The folding step is a step of forming the folded portion 50 in the sheet body 5 .

In the bonding step, the multilayer structure sheet is heated using a heating device such as a seal bar and pressed against the lower surface 32a and the bottom surface 45a of the spout 1 while the multilayer structure sheet is heated. As a result, the multilayer structure sheet is thermally welded to the lower surface 32a and the bottom surface 45a of the spout 1. As shown in FIG.

In the cutting step, a cutting device such as a laser or a knife is used to cut the multilayer structure sheet along the outer peripheral surface of the attachment portion 30 to cut out a portion corresponding to the sheet body 5 in the multilayer structure sheet. A portion corresponding to the sheet body 5 cut out from the multilayer structure sheet in the cutting step is cut into a shape that is slightly larger than the outer peripheral shape of the mounting portion 30 .

In the folding step, the sheet body 5 is folded into a shape along the outer peripheral surface of the mounting portion 30 by heating the folding mold with a heater. By heating the folding mold with a heater, the peripheral edge portion of the sheet body 5 is thermally welded to the outer peripheral surface of the mounting portion 30 . Thereby, the bent portion 50 is formed. Thus, the pouring spout 1 having the sheet body 5 attached to the lower surface 32a and the bottom surface 45a is obtained.

<Actions and effects of the present embodiment>
The action of the spout tool 1 of this embodiment will be described.
When opening the container, the lid portion 4 is rotated with respect to the pouring portion 2 to move upward. When the lid portion 4 moves upward with respect to the pouring portion 2 , the sheet body 5 attached to the bottom surface 45 a of the lid body portion 41 of the lid portion 4 is attached to the bottom surface 32 a of the pouring portion 2 . The sheet body 5 is pulled upward. Here, in the lower surface 32a of the pouring portion 2 and the bottom surface 45a of the lid body portion 41, a gap G is formed between the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41. is formed. The width of the gap G is as narrow as about 0 to 0.1 mm. Therefore, the outer peripheral edge Ep of the bottom surface 45a of the lid main body 41 is pulled up directly above the inner peripheral edge Ei of the lower surface 32a of the spout portion 2 compared to the case where the width of the gap G is relatively large. will be In this case, force acts on the sheet body 5 with the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 as the point of action.

Here, as a comparative example, it is assumed that a gap having a uniform size is provided over the entire circumference between the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41. do. In the case of the comparative example, the outer peripheral end Ep of the bottom surface 45a of the lid main body 41 has the same positional relationship with the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 at any portion in the circumferential direction. When the container is unsealed, the force acting on the sheet body 5 of the comparative example with the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 as the point of action is any portion of the inner peripheral end Ei in the circumferential direction. will be the same. For this reason, in the sheet body 5 of the comparative example, it is difficult to specify from which part the tearing starts, and the sheet body 5 does not reach the timing at which the turning operation of the lid part 4 is started in order to open the container. The timing at which the cutting of the body 5 is started tends to be delayed.

In contrast, according to the present embodiment, the size of the gap G in the first direction D1 is set smaller than the size of the gap G in the second direction D2. Therefore, when the container is unsealed, the outer peripheral edge Ep of the bottom surface 45a of the lid main body 41 in the first direction D1 is positioned directly above the inner peripheral edge Ei of the lower surface 32a of the pouring part 2. It will be. Therefore, the sheet body 5 attached to the inner peripheral edge Ei of the lower surface 32a of the spout portion 2 in the first direction D1 is attached to the inner peripheral edge Ei of the lower surface 32a of the spout portion 2 in the second direction D2. The seat body 5 is pulled up directly above the seat body 5 and twisted by the rotating operation. When the container is unsealed, the force acting on the sheet body 5 with the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 as the point of action can be varied in the circumferential direction of the inner peripheral end Ei. In this case, in the sheet body 5, tearing is likely to start from the portion where the force acts with the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 in the first direction D1 as the point of action. As a result, the delay in the timing at which the tearing of the sheet body 5 is started with respect to the timing at which the turning operation of the lid portion 4 is started in order to open the container is suppressed, and the sheet body 5 is torn before being torn. It is possible to prevent the sheet body 5 from overstretching. That is, compared with the sheet body 5 of the comparative example, in the sheet body 5 of the present embodiment, excessive stretching of the sheet body 5 can be suppressed before the sheet body 5 is torn. Since the sheet body 5 can be suitably torn before the sheet body 5 is stretched too much, the cut edge of the torn sheet body 5 can be cleaned.

The cap ring 48 that constitutes the tamper-evidence function is cut off by rotating the lid portion 4 with respect to the pouring portion 2 . When the engagement between the male screw 21 and the female screw 47 is completely released, the lid main body 41 is extracted from the cylinder main body 20 and the mounting portion 30 of the spouting portion 2, and the lid portion 4 is removed from the spouting portion 2. , the pouring spout 1 is opened. As a result, the fluid in the bag-like container can be discharged from the channel C of the tube main body portion 20 and the attachment portion 30 .

When closing the cap after pouring out the fluid from the bag-like container, the lid main body 41 of the lid 4 is inserted into the inner side of the cylinder main body 20 and the mounting part 30 of the pouring part 2, and the lid 4 pours out. The male screw 21 and the female screw 47 are engaged with each other by being rotated with respect to the projecting portion 2 . At this time, since a tapered surface 46a whose diameter decreases toward the bottom is formed at the lower end of the projection 46 formed on the outer peripheral surface of the lid main body 41, the upper end of the cylinder main body 20 is the tapered surface 46a. While being guided by , it smoothly advances through the gap between the outer peripheral surface of the lid body portion 41 and the inner peripheral surface of the outer cylindrical portion 43 . As a result, the fluid in the bag-like container is blocked from flowing out from the flow path C of the tube main body 20 and the mounting portion 30 .

Effects of the present embodiment will be described.
(1) Since the sheet body 5 can be suitably torn before the sheet body 5 is stretched too much, the cut edge of the torn sheet body 5 can be cleaned. As a result, the pouring spout 1 with a clean cut end of the sheet body 5 can be obtained.

(2) In the present embodiment, the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41 are in contact with each other in the first direction D1. Therefore, when the container is unsealed, the outer peripheral edge Ep of the bottom surface 45a of the lid main body 41 in the first direction D1 is positioned directly above the inner peripheral edge Ei of the lower surface 32a of the pouring part 2. It will be. Therefore, the sheet body 5 attached to the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 in the first direction D1 is pulled upward and twisted by the rotating operation.

(3) The thickness of the mounting portion 30 is thinner in the direction orthogonal to the direction in which the projecting portion 30b projects than in the direction in which the projecting portion 30b projects. Therefore, in the direction orthogonal to the direction in which the projecting portion 30b protrudes, it becomes easier for the person who performs the process of unsealing the container to grip the mounting portion 30 compared to the direction in which the projecting portion 30b projects. Since the first direction D1 is a direction orthogonal to the direction in which the projecting portion 30b protrudes, it is possible to prevent the mounting portion 30 from increasing in size in the first direction D1. As a result, it becomes easy to maintain the ease of gripping the mounting portion by the person who is unsealing the container.

<Other embodiments>
The above embodiment may be modified as follows. Also, other embodiments below can be combined with each other within a technically consistent range.

・In the pouring spout 1 of the above embodiment, the length of the lid main body 41 in the vertical direction is the state where the upper end surface of the cylinder main body 20 of the pouring part 2 is in contact with the lower surface of the flange 42 of the lid 4. Although the bottom surface 45a of the lid main body portion 41 is set to be flush with the bottom surface 32a of the mounting portion 30 of the pouring portion 2, the present invention is not limited to this. For example, the length from the lower surface of the flange portion 42 of the lid main body portion 41 to the bottom surface 45a of the bottom wall 45 is slightly longer than the length from the upper end surface of the cylinder main body portion 20 to the lower surface 32a of the mounting portion 30. good too. In this way, when the lid portion 4 is attached to the pouring portion 2, the upper end surface of the cylinder main body portion 20 contacts the lower surface of the flange portion 42 of the lid portion 4, and the bottom wall 45 of the lid main body portion 41 pours out. It protrudes downward from the lower surface 32a of the mounting portion 30 of the protruding portion 2 . This protrusion length is preferably about 0.1 to 0.5 mm.

In this way, if the bottom wall 45 of the lid main body 41 protrudes slightly downward from the lower surface 32a of the mounting portion 30, when the multi-layer structure sheet is crimped and joined, the bottom wall 45a of the lid main body 41 may All sealing pressures can be increased. As a result, the multilayer structure sheet is firmly joined, and the joining strength of the sheet body 5 can be improved.

・In the spout 1 of the above embodiment, the inner peripheral surface of the cylinder main body 20 is formed in a straight shape whose diameter does not change in the vertical direction. Although the gap G was formed, it is not limited to this. For example, the inner diameter of the tube main body 20 may vary in the vertical direction.

- Although the attachment part 30 has comprised the substantially diamond shape by top view by providing the two overhang|projection part 30b which protrudes in the left-right direction, it is not restricted to this. For example, it may have a substantially cylindrical shape when viewed from above by providing an overhanging portion projecting like a flange over the entire circumference. Further, for example, the mounting portion 30 may have a substantially cylindrical shape when viewed from above by not providing the projecting portion 30b. It should be noted that if the mounting portion 30 has a shape elongated in the left-right direction, such as a substantially rhombic shape, the heat-sealed adhesive strength increases.

- Although the attachment part 30 was comprised by four board parts, it is not restricted to this. For example, the mounting portion 30 may be composed of three or less plate portions, or may be composed of five or more plate portions. Moreover, the attachment portion 30 may be configured by a single plate portion instead of being configured by a plurality of plate portions.

The shapes of the upper plate portion 31, the lower plate portion 32, and the intermediate plate portion 33 that constitute the mounting portion 30 can be changed as appropriate. good too.

・Each side surface of the upper plate portion 31, the lower plate portion 32, and the intermediate plate portion 33 that constitute the mounting portion 30 is not limited to being formed as a flat surface without unevenness, but is also formed as a surface having unevenness. may

The shape of the annular protrusion 22 formed on the outer peripheral surface of the vertical intermediate portion of the cylinder main body 20 can be changed as appropriate, and may be, for example, a circular shape or a hexagonal shape. Further, the annular protrusion 22 may not be formed on the outer peripheral surface of the vertical intermediate portion of the cylinder body portion 20 .

・The ratchet 23 may not be formed on the tube main body 20 .
- The spout tool 1 may not be provided with a tamper-evident function. That is, the cap ring 48 that constitutes the tamper-evidence function may not be connected to the lower end of the outer cylinder portion 43 .

- The shape of the lid body portion 41 of the lid portion 4 can be changed as appropriate. The shape of the lid main body 41 of the lid 4 may be, for example, a solid shape, or a bottomed cylindrical lid main body 41 whose opening is closed.

- Although the inner peripheral surface of the peripheral wall 44 of the lid main body 41 is formed in a straight shape in which the diameter does not change in the vertical direction, it is not limited to this. For example, the inner peripheral surface of the peripheral wall 44 may have a different inner diameter by forming a tapered surface or the like.

- Although the outer peripheral surface of the peripheral wall 44 of the lid body portion 41 is formed in a straight shape in which the diameter does not change in the vertical direction, it is not limited to this. For example, the outer diameter of the outer peripheral surface of the peripheral wall 44 may be changed by forming a tapered surface or the like.

- Although the bottom surface 45a of the bottom wall 45 of the lid main body 41 is formed as a flat surface that is horizontal in the left-right direction and has no irregularities, the present invention is not limited to this. For example, the bottom surface 45a may be provided with traces of a gate when the lid body portion 41 is injection molded, and unevenness may be formed on the bottom surface 45a by the gate traces.

- The shape of the outer cylindrical portion 43 of the lid main body portion 41 is not limited to a cylindrical shape, and can be changed as appropriate. For example, the outer peripheral surface of the outer cylinder portion 43 may have an elliptical shape when viewed from above, or may have a hexagonal shape when viewed from above.

- You may make it provide several protrusions in the internal peripheral surface of the attachment main-body part 30a. The ridge extends vertically on the inner peripheral surface of the mounting main body portion 30a. In addition, the protrusion is set smaller than the width of the gap G. The ridges may be provided at equal intervals, or may be provided at different intervals in consideration of the gap G. Also, such a plurality of ridges may be provided on the outer peripheral surface of the peripheral wall 44 of the lid main body 41, for example. The number, height, and vertical length of the protrusions can be changed as appropriate.

The direction in which the inner peripheral edge Ei of the lower surface 32a of the spout portion 2 and the outer peripheral edge Ep of the bottom surface 45a of the lid main body 41 are in contact, that is, the first direction D1 is a direction orthogonal to the left-right direction. It may be the left-right direction, or it may be the left-right direction and a direction between the left-right direction and the direction orthogonal to the left-right direction. The same applies to the direction in which the inner peripheral edge Ei of the lower surface 32a of the pouring portion 2 and the outer peripheral edge Ep of the bottom surface 45a of the lid main body 41 are separated from each other, that is, the second direction D2. That is, the first direction D1 and the second direction D2 can be changed as appropriate.

- In the first direction D1, the inner peripheral edge Ei of the lower surface 32a of the spout portion 2 and the outer peripheral edge Ep of the bottom surface 45a of the lid body portion 41 were in contact with each other, but the inner peripheral edge of the lower surface 32a of the spout portion 2 Ei and the outer peripheral edge Ep of the bottom surface 45a of the lid main body 41 may be spaced apart. Even in this case, the size of the gap G in the first direction D1 is preferably smaller than the size of the gap G in the second direction D2, as in the above embodiment.

- Although the size of the gap G in the first direction D1 is set smaller than the size of the gap G in the second direction D2, the size of the gap G in the first direction D1 is set to be smaller than the size of the gap G in the second direction D2. You can set it larger.

- In the first direction D1, the size of one of the gaps G between the inner peripheral end Ei of the lower surface 32a of the spout portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41, and the lower surface of the spout portion 2 The size of the other gap G between the inner peripheral end Ei of the 32a and the outer peripheral end Ep of the bottom surface 45a of the lid main body 41 was set to "zero (zero value)", that is, substantially equal. is not limited to

As shown in FIG. 4, for example, in the first direction D1, the size of one of the gaps G between the inner peripheral end Ei of the lower surface 32a of the spout portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41 may be different from the size of the other gap G between the inner peripheral end Ei of the bottom surface 32a of the pouring portion 2 and the outer peripheral end Ep of the bottom surface 45a of the lid body portion 41 . In this case, in the smaller gap among the gaps G in the first direction D1, the outer peripheral edge Ep of the bottom surface 45a of the lid main body 41 is closer to the inner peripheral edge Ei of the lower surface 32a of the pouring part 2 than the other gap. can be positioned directly above the This also applies to the gap G in the second direction D2.

- When the container is opened, the sheet body 5 starts to tear from the portion where the force acts with the inner peripheral end Ei of the lower surface 32a of the pouring portion 2 in the first direction D1 as the point of action. It is not limited to this. For example, due to various factors including the positional relationship between the inner peripheral end Ei and the outer peripheral end Ep, the material of the sheet body 5, and the state of force acting at the point of action, the sheet body 5 does not pour out in the second direction D2. The tearing may be initiated from the portion where the force acts on the inner peripheral end Ei of the lower surface 32a of the portion 2 as the point of action.

- The structure of the bending part 50 can be changed suitably. For example, in the step of cutting out the sheet body 5, a protruding portion that protrudes sideways from the mounting portion 30 is provided on the entire peripheral edge of the sheet body 5, and the protruding portion is bent to form the bent portion 50 on the entire peripheral edge. It may be configured as Further, for example, in the step of cutting out the sheet body 5 , the projecting portion may be formed in a part of the entire peripheral edge of the sheet body 5 . In this case, the bent portion 50 is adhesively fixed to a portion of the outer peripheral surface of the mounting portion 30 . Further, the bent portion 50 is not limited to being formed by bending a projecting portion that is intentionally provided in the process of cutting out the sheet body 5. It may be formed by bending the protruding portion of the peripheral edge of 5 .

- Although the bent portion 50 is adhesively fixed to the outer peripheral surface of the mounting portion 30, the mode of fixing the bent portion 50 to the mounting portion 30 can be changed as appropriate. For example, the bent portion 50 may be configured such that only a portion thereof is adhered to the mounting portion 30 . Alternatively, the bent portion 50 may be simply bent along the outer peripheral surface of the mounting portion 30 without being adhered to the mounting portion 30 .

- The sheet body 5 may not be provided with the bent portion 50 .
- The adhesive sheet piece 37 may not be provided on the outer peripheral surface of the mounting portion 30 .
- The shape, size, and layer structure of the sheet body 5 can be changed as appropriate. In addition, the layer structure of the sheet|seat body 5 should just be equipped with a gas barrier layer at least. For example, the layered structure of the sheet body 5 may be a three-layered sheet comprising a gas barrier layer and heat-sealable layers laminated on both sides of the gas barrier layer. Further, when the sheet body 5 is attached to the lower surface 32a and the bottom surface 45a of the spout 1 with an adhesive or the like, the heat-sealable layer can be omitted.

In the adhesion step, the sheet body 5 is attached to the lower surface 32a and the bottom surface 45a of the pouring spout 1 by pressing the multi-layer structure sheet toward the lower surface 32a and the bottom surface 45a of the pouring spout 1 while heating it using a heating device. but not limited to this. For example, in the bonding step, a multi-layer structure sheet in the form of branches and leaves may be bonded to each of the spouts 1 .

- In the cutting step, the multilayer structure sheet is cut out by irradiating the laser along the peripheral edge of the mounting portion 30 of each spout 1, but the present invention is not limited to this. For example, in the cutting step, a cutter may be used to cut out the multilayer structure sheet.

- In the folding step, the folding die is heated by the heater to thermally weld the peripheral portion of the sheet body 5 to the mounting portion 30, but the present invention is not limited to this. For example, in the folding step, after the peripheral portion is folded into a shape along the outer peripheral surface of the mounting portion 30 with a folding die, the folding die is removed, and the spout 1 to which the sheet body 5 is adhered is removed by a hot plate. The protruding portion may be thermally welded to the attachment portion 30 by sandwiching from the direction orthogonal to the axial direction of the cylinder main body portion 20 .

・The bag-shaped container of the above embodiment is formed of a multi-layer structure sheet in which an aluminum foil layer is laminated between multiple layers of thin polyethylene sheets, but the structure and materials of the layers can be changed as appropriate. is.

- The method of fixing the pouring spout 1 to the opening of the bag-like container is not limited to adhesive fixation by heat sealing, and can be changed as appropriate.
- The spout tool 1 can be applied not only to a bag-like container made of synthetic resin but also to various containers. In this case, the mounting portion 30 can be appropriately changed, for example, into a simple flange shape in accordance with the shape of the bag-like container.

- The fluid accommodated inside the bag-like container is not limited to liquid or viscous material, and may be solid material such as solid matter, granules, or powder.
Next, technical ideas that can be grasped from the above embodiment and modifications will be described below.

(a) The pouring part has a cylinder main body and a mounting part integrally connected with the cylinder main body at the lower part of the cylinder main body, and the mounting part is integrally connected with the cylinder main body. and two protrusions projecting outward in the radial direction from the attachment body, wherein the second direction is the direction in which the protrusions project.

According to the above configuration, the mounting portion is thicker in the direction in which the protrusion protrudes than in the direction orthogonal to the direction in which the protrusion protrudes. Therefore, by setting the second direction to be the direction in which the overhanging portion protrudes, even if the gap between the inner peripheral surface of the pouring portion and the outer peripheral surface of the lid body portion is made relatively large, the opening of the container is prevented. It is possible to suppress a decrease in the ease of gripping the mounting portion by the operator.

(b) In the first direction, the size of one of the gaps between the inner peripheral edge of the lower surface of the spout portion and the outer peripheral edge of the bottom surface of the lid main body in the first direction Spout fittings that differ from the size of the gap.

According to the above configuration, in the smaller gap among the two gaps in the first direction, the outer peripheral edge of the bottom surface of the lid main body portion is closer to the inner peripheral edge of the lower surface of the spout portion than in the larger gap. It will be located directly above.

(c) A pouring spout in which the gas barrier member contains high-density polyethylene.
According to the above configuration, it is possible to prevent the gas barrier member from being excessively stretched when the container is opened, as compared with the case where the low-density polyethylene is contained.

C... Flow path 1... Spout tool 2... Spout part 4... Lid part 5... Sheet body (gas barrier member)
DESCRIPTION OF SYMBOLS 20... Cylinder main-body part 30... Mounting part 30a... Mounting main-body part 30b... Overhanging part 32a... Lower surface 41... Lid main-body part 45a... Bottom surface D1, D2... 1st, 2nd direction Ei... Inner peripheral end Ep... Outer peripheral end G …gap

Claims (3)

A spout attached to an opening of a container containing a fluid therein,
a tubular spout forming the flow path of the fluid; and a bottomed lid main body that is detachably attached by screwing the spout to the spout and is inserted into the inner peripheral surface of the spout. and a gas barrier member attached from the lower surface of the pouring portion to the bottom surface of the lid main body,
The spout portion and the lid body portion are provided such that a gap is formed between an inner peripheral end of the bottom surface of the spout portion and an outer peripheral end of the bottom surface of the lid body portion,
When the lower surface of the spout portion and the bottom surface of the lid main body are viewed, a direction in which an imaginary straight line including the center of the lid main body extends is defined as a first direction, and an imaginary straight line including the center of the lid main body extends. When the second direction is a direction different from the first direction,
The size of the gap in the first direction is set smaller than the size of the gap in the second direction. 2. The pouring spout according to claim 1, wherein the inner peripheral end of the lower surface of the pouring portion and the outer peripheral end of the bottom surface of the lid body portion are in contact with each other in the first direction. The pouring part has a cylinder main body and a mounting part integrally connected with the cylinder main body at a lower part of the cylinder main body,
The mounting portion has a mounting body portion that is integrally connected to the cylinder body portion, and two protruding portions that protrude outward in a radial direction from the mounting body portion,
The spout according to claim 1 or 2, wherein the first direction is a direction perpendicular to the direction in which the protrusion protrudes.

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