JP7742010B2 - Pouch container packaging and pouch container packaging - Google Patents

Description

The present invention relates to a packaging body for a pouch container and a pouch container package.

Pouch container packages are widely used as container packages suitable for packaging items such as beverages like sports drinks, foods like ice cream and jelly, or pharmaceuticals. A spout fixed to the container body is used as a component for pouring the contents of the pouch container. Patent Document 1 discloses an example of a pouch container package with a spout. In the pouch container package disclosed in this document, the spout does not penetrate the container body when unused, and the container body is maintained in a sealed state. When pouring the packaged item during use, a portion of the spout is rotated to pierce the container body with the spout. This makes it possible to suppress deterioration of the packaged item when unused.

European Patent Publication No. 2143658

However, the pouch container package disclosed in the document is configured so that the pointed tip of the spout is pressed against the container body, thereby piercing the container body. With this configuration, for example, the ductility of the container body may prevent the spout from piercing the container body sufficiently.

The present invention was devised in light of the above circumstances, and its objective is to provide a pouch container packaging body and a pouch container package that allows the container body to be opened more reliably.

A pouch container packaging provided by a first aspect of the present invention is a pouch container packaging comprising: a container body having a top sheet that covers the top side; and a spout that is fixed to the outer surface of the top sheet and has a pouring space extending in the axial direction. The spout has a fixed portion that is fixed to the top sheet, a rotating portion that is rotatable relative to the fixed portion, and a tearing portion that cuts through the top sheet. The top sheet has a flat portion that is flat when the fixed portion is fixed, and the tearing portion is initially positioned away from the flat portion. As the rotating portion rotates, it moves while rotating in a direction from the outer surface of the flat portion toward the inner surface, thereby cutting through the flat portion.

In a preferred embodiment of the present invention, the fixing portion has a flat, annular flange portion, which is fixed to the outer surface of the top sheet.

In a preferred embodiment of the present invention, the spout has a rotation angle limiting means that limits the rotation of the rotating part to less than 360° after the tearing part begins to tear the top sheet.

In a preferred embodiment of the present invention, the rotating portion has a first cylindrical portion that screws into the fixed portion, and the slit portion is formed on the axial tip side of the first cylindrical portion.

In a preferred embodiment of the present invention, the notch is inclined so that it protrudes more in the direction of rotation as it approaches the axial tip.

In a preferred embodiment of the present invention, the axial tip side of the first cylindrical portion is provided with an inclined edge that slopes from the tip side of the tear portion toward the axial base end side in the direction opposite to the rotational direction.

In a preferred embodiment of the present invention, the top sheet has an easy-to-tear line formed thereon that is easier to tear than adjacent areas, and the easy-to-tear line overlaps with at least a portion of the rotational orbit of the tear portion when viewed along the axial direction.

In a preferred embodiment of the present invention, the tear-ease line has an outer guide portion located radially outward of the rotational orbit of the tearing portion, near the end of the rotational orbit of the tearing portion when viewed along the axial direction.

In a preferred embodiment of the present invention, the spout has a removable band that prevents the rotating part from rotating relative to the fixed part.

The pouch container package provided by the second aspect of the present invention comprises a pouch container package provided by the first aspect of the present invention and an item to be packaged that is hermetically contained in the container body.

According to the present invention, the container body can be opened more reliably.

Other features and advantages of the present invention will become more apparent from the detailed description below, taken in conjunction with the accompanying drawings.

1 is a front view showing a pouch-container package according to a first embodiment of the present invention. 1 is a plan view showing a pouch-container package according to a first embodiment of the present invention. FIG. 1 is a front view showing a pouch-container package according to a first embodiment of the present invention. FIG. 4 is an enlarged cross-sectional view of a main part taken along line IV-IV in FIG. 2. 1 is an exploded perspective view showing a spout of a pouch-container package according to a first embodiment of the present invention. FIG. 1 is an exploded front view showing a spout of a pouch-container package according to a first embodiment of the present invention. FIG. 1 is an exploded cross-sectional view showing a spout of a pouch-container package according to a first embodiment of the present invention. FIG. 1 is a cross-sectional view of a main portion showing a main body sheet of a container body of a pouch-container package according to a first embodiment of the present invention. FIG. 1 is a cross-sectional view of a main portion showing a top sheet of a container body of a pouch-container package according to a first embodiment of the present invention. FIG. 1 is a front view of a main part showing the opening of a pouch container package according to a first embodiment of the present invention. FIG. 1 is a front view of a main part showing the opening of a pouch container package according to a first embodiment of the present invention. FIG. 1 is a front view of a main part showing the opening of a pouch container package according to a first embodiment of the present invention. FIG. 1 is a front view of a main part showing the opening of a pouch container package according to a first embodiment of the present invention. FIG. 1A is a schematic diagram showing a rotation angle when opening a pouch-container package according to a first embodiment of the present invention, and FIG. 1B is an enlarged perspective view of a main part. 1A is a schematic diagram showing a rotation angle when opening a pouch-container package according to a first embodiment of the present invention, and FIG. 1B is an enlarged perspective view of a main part. 1A is a schematic diagram showing a rotation angle when opening a pouch-container package according to a first embodiment of the present invention, and FIG. 1B is an enlarged perspective view of a main part. 1A is a schematic diagram showing a rotation angle when opening a pouch-container package according to a first embodiment of the present invention, and FIG. 1B is an enlarged perspective view of a main part. 1A is a schematic diagram showing a rotation angle when opening a pouch-container package according to a first embodiment of the present invention, and FIG. 1B is an enlarged perspective view of a main part. 1A is a schematic diagram showing a rotation angle when opening a pouch-container package according to a first embodiment of the present invention, and FIG. 1B is an enlarged perspective view of a main part. FIG. 2 is an exploded front view showing a first modified example of the spout of the pouch-container package according to the first embodiment of the present invention. FIG. 10 is an exploded front view showing a second modified example of the spout of the pouch-container package according to the first embodiment of the present invention. FIG. 10 is an exploded front view showing a third modified example of the spout of the pouch-container package according to the first embodiment of the present invention. FIG. 10 is an exploded front view showing a fourth modified example of the spout of the pouch-container package according to the first embodiment of the present invention. FIG. 10 is a cross-sectional view showing a fifth modified example of the spout of the pouch-container package according to the first embodiment of the present invention. FIG. 10 is an enlarged perspective view of a main portion showing a first modified example of the top sheet of the container body of the pouch-container packaging body according to the first embodiment of the present invention. FIG. 10 is an enlarged perspective view of a main portion showing a second modified example of the top sheet of the container body of the pouch-container packaging body according to the first embodiment of the present invention.

Below, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

In the following description, the upper side in the vertical direction may be referred to as the "top" side, and the lower side as the "bottom" side. Furthermore, the terms "up-down" and "front-rear" are used for the convenience of explaining the configuration, and the orientation of the pouch container packaging or pouch container packaging is not necessarily restricted to those directions. Terms such as "first" and "second" used in this disclosure are used merely for the convenience of identification and are not intended to assign any rank to these objects.

First Embodiment
1 to 9 show a pouch-container package and a pouch-container package according to a first embodiment of the present invention. The pouch-container package A1 of this embodiment includes a container body 1 and a spout 2. The pouch-container package A1 is a package used for a pouch-container package B1.

Figure 1 is a front view showing pouch-container packaging A1. Figure 2 is a plan view showing pouch-container packaging A1. Figure 3 is a front view showing pouch-container package B1. Figure 4 is an enlarged cross-sectional view of a main portion taken along line IV-IV in Figure 2. Figure 5 is an exploded perspective view showing the spout of pouch-container packaging A1. Figure 6 is an exploded front view showing the spout of pouch-container packaging A1. Figure 7 is an exploded cross-sectional view showing the spout of pouch-container packaging A1. Figure 8 is a cross-sectional view of a main portion showing the main body sheet of the container body of pouch-container packaging A1. Figure 9 is a cross-sectional view of a main portion showing the top sheet of the container body of pouch-container packaging A1.

[Container body 1]
The container body 1 accommodates the packaged item 7 in a sealed state in the pouch-container package B1. The container body 1 has a pair of body sheets 11 and a top sheet 12. Note that the specific configuration of the container body 1 in the pouch-container package A1 and the pouch-container package B1 is not limited in any way. The container body 1 may be configured to have only the pair of body sheets 11 and the top sheet 12, or may be configured to further include a side gusset sheet, a bottom gusset sheet, etc.

The pair of main body sheets 11 overlap in the y direction. There are no particular limitations on the shape or size of the pair of main body sheets 11. The shape of the main body sheet 11 may be selected from a variety of shapes, such as rectangular or polygonal, and in this embodiment, it is generally rectangular. The main body sheet 11 is configured to maintain the sealed state of the container body 1 when the pouch container package B1 is in an unused state, and does not have any through holes or cut portions leading to the interior. Note that the pair of main body sheets 11 constituting the container body 1 are not limited to being made from separate sheet materials. For example, the pair of main body sheets 11 overlapping in the y direction may be formed by flattening a cylindrical sheet formed by joining both widthwise ends of a single sheet material.

The top sheet 12 covers the top sides of the pair of main body sheets 11 (upper sides in the z direction in Figures 1 and 3). The shape and size of the top sheet 12 are not particularly limited. The shape of the top sheet 12 may be selected from a variety of shapes, such as rectangular, polygonal, circular, or elliptical, and in this embodiment, it is a substantially octagonal shape as shown in Figure 2. The top sheet 12 is configured to maintain the sealed state of the container body 1 when the pouch container package B1 is unused, and does not have any through holes or cut portions leading to the interior. Furthermore, as shown in Figure 4, the top sheet 12 has a flat portion 125. The flat portion 125 is a portion that is flat when the fixing portion 3, described below, is fixed.

The pair of main body sheet 11 and top sheet 12 are typically composed of resin film. This resin film is required to provide basic packaging performance, such as impact resistance, abrasion resistance, and heat resistance. Furthermore, since the seal portion 17, described below, is typically formed by heat sealing, the sheet is also required to have heat sealability. Furthermore, the spout 2, described below, is fixed to the top sheet 12, for example, by ultrasonic welding. A multilayer sheet having a base film layer and a sealant film layer that provides heat sealability is preferred. When high gas barrier properties or light blocking properties are required, it is preferred to provide a barrier layer between the base film layer and the sealant film layer. The base film layer itself may also be provided with barrier properties. In this case, the barrier layer is used as the base film layer, resulting in a multilayer sheet having a barrier layer and a sealant film layer.

As shown in Figure 8, this embodiment will be described by taking as an example a case where the main body sheet 11 is configured by laminating a base film layer 101, a sealant film layer 102, and a barrier film layer 104. Also, as shown in Figure 9, this embodiment will be described by taking as an example a case where the top sheet 12 is configured by laminating a base film layer 101, a sealant film layer 102, a sealant film layer 103, and a barrier film layer 104.

As shown in Figure 8, the main body sheet 11 has a base film layer 101 disposed on the outer surface side, and a sealant film layer 102 exposed on the inner surface. A barrier film layer 104 is interposed between the base film layer 101 and the sealant film layer 102. In Figure 8, the left side in the y direction is the outer surface side, and the right side is the inner surface side.

The top sheet 12 has a sealant film layer 103 exposed on the outer surface and a sealant film layer 102 exposed on the inner surface. The base film layer 101 is interposed between the sealant film layer 102 and the sealant film layer 103. The barrier film layer 104 is interposed between the base film layer 101 and the sealant film layer 102. The barrier film layer 104 may also be interposed between the base film layer 101 and the sealant film layer 103. The barrier film layer 104 may also be provided on both sides of the base film layer 101. In Figure 10, the upper side in the z direction is the outer surface side, and the lower side is the inner surface side.

In this embodiment, the top sheet 12 has an easy tear line 120. The easy tear line 120 is located in the flat portion 125 and is a linear portion that is easier to tear than adjacent portions. The easy tear line 120 is, for example, a groove recessed in the sealant film layer 103 on the outer surface. The specific configuration of the easy tear line 120 is not limited, and it may be, for example, a hollow portion. For example, such a hollow portion may be formed by irradiating only the base film layer 101 of the sealant film layer 103, base film layer 101, barrier film layer 104, and sealant film layer 103 that constitute the top sheet 12 shown in FIG. 9 with laser light, resulting in the formation of a hollow portion. However, from the perspective of protecting the packaged item 7, it is preferable that the easy tear line 120 does not penetrate the barrier film layer 104. The easy tear line 120 can be formed, for example, by irradiating the material sheet of the top sheet 12 with laser light from the sealant film layer 103 side. The location where the tearable line 120 is provided and its function will be described later.

Here, examples of the constituent materials of the base film layer 101, sealant film layers 102 and 103, and barrier film layer 104 are given. Lamination of these layers can be performed using conventional lamination methods, such as coextrusion lamination, dry lamination using an adhesive, or thermal lamination in which a thermally adhesive layer is sandwiched between layers and thermally bonded.

Examples of films that constitute the base film layer 101 include single-layer or double-layer or more stretched or unstretched films made of polyester (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc.), polyolefin (polyethylene (PE), polypropylene (PP)), polyamide (nylon-6, nylon-66, etc.), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polymethyl methacrylate (PMMA), polyethersulfone (PES), etc.

Examples of films that may constitute the sealant film layers 102, 103 include single-layer or two-layer or more stretched or unstretched films made of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unstretched polypropylene (CPP), biaxially oriented nylon (ON), ethylene-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), and ethylene-vinyl acetate copolymer (EVA).

Examples of the barrier film layer 104 include a thin metal film such as aluminum, a resin film such as polyvinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or any synthetic resin film (which may be, for example, a base film layer) onto which aluminum, aluminum oxide, silica, or other inorganic oxides have been vapor-deposited (or sputtered).

A preferred example of a top sheet 12 having the easy tear line 120 consisting of the hollow portion described above is a laminated film including at least four layers: a polyethylene sealant film layer (sealant film layer 103), a polyester or polyamide base film layer (base film layer 101), a metal thin film (barrier film layer 104), and a polyethylene sealant layer (sealant film layer 103).

The seal portion 17 is a portion where the pair of main body sheet 11 and top sheet 12 are joined together at appropriate locations, enabling the container body 1 to hermetically contain the packaged item 7. The specific configuration of the seal portion 17 is not limited in any way, and in this embodiment, it is formed by heat sealing. As shown in Figures 1 and 2, in the illustrated pouch container package A1, the seal portion 17 has a pair of side seal portions 171 and a top seal portion 172.

The pair of side seal portions 171 are areas where both end portions in the x direction of the pair of main body sheets 11 are joined together. In this embodiment, the sealant film layers 102 of the pair of main body sheets 11 are joined together at the side seal portions 171 by heat sealing.

As shown in Figure 2, the top seal portion 172 is the area where the top side portions of the pair of main body sheets 11 and the peripheral edge portions of the top sheet 12 are joined together. In the example shown, the sealant film layer 102 of the pair of main body sheets 11 and the sealant film layer 102 of the top sheet 12 are joined by heat sealing.

As shown in FIG. 3 , in the pouch-container package B1, the seal portion 17 includes a pair of side seal portions 171 and a top seal portion 172, as well as a bottom seal portion 173. The bottom seal portion 173 is the area where the bottom portions of the pair of main body sheets 11 are joined together after the packaged item 7 is filled from the bottom side of the container body 1 of the pouch-container package A1. In this embodiment, the sealant film layers 102 of the pair of main body sheets 11 are joined together by heat sealing at the bottom seal portion 173. By forming the seal portion 17, the packaged item 7 is contained in a sealed state within the container body 1 in the pouch-container package B1.

[Spout 2]
The spout 2 is used to pour out the packaged item 7 in the pouch-container package B1. In this embodiment, as shown in FIGS. 4 to 7 , the spout 2 has a fixed portion 3, a rotating portion 4, a cap portion 5, and a band-shaped portion 6. As shown in FIG. 4 , the spout 2 has a pouring space 21 extending in the z-direction, which is the axial direction. After the pouch-container package B1 is opened, the packaged item 7 is poured out through the pouring space 21. The material of the spout 2 is not particularly limited, and it may be made of a resin material such as polyethylene. The specific configuration of the spout 2 is not limited in any way, and various modifications are possible as long as the configuration performs the function intended by the present invention.

As shown in Figures 4, 6, and 7, the fixing portion 3 is fixed to the outer surface (top surface in the figures) of the top sheet 12. In this embodiment, the fixing portion 3 has a flange portion 31 and a second tubular portion 32.

The flange portion 31 has a flat shape along the xy plane and is annular when viewed from the z direction. The shape of the flange portion 31 when viewed from the z direction can be selected from various shapes such as a circular ring shape, an elliptical ring shape, or a polygonal ring shape. In the illustrated example, the flange portion 31 is annular.

In this embodiment, as shown in Figure 4, the flange portion 31 is fixed to the outer surface of the top sheet 12. There are no limitations on the method for fixing the flange portion 31; in this embodiment, ultrasonic welding is used, and the flange portion 31 is joined to the sealant film layer 103 of the top sheet 12. The flange portion 31 may also be fixed to the top sheet 12 using an adhesive or heat sealing. By fixing the flat, ring-shaped flange portion 31, at least the portion of the top sheet 12 that overlaps with the flange portion 31 when viewed from the z direction and the portion located inside the flange portion 31 are maintained in a flat shape, forming the above-mentioned flat portion 125.

As shown in Figures 4 to 7, the second tubular portion 32 is connected to the inner peripheral end of the flange portion 31 and is a generally cylindrical portion extending upward in the z direction (upward in the figure). In the example shown, the second tubular portion 32 has a second threaded portion 321 and a thick portion 322.

As shown in Figures 4, 5 and 7, the second threaded portion 321 is formed on the inner surface of the second tubular portion 32. The second threaded portion 321 is a portion that threads into the first threaded portion 411 of the rotating portion 4, which will be described later.

As shown in Figures 4 and 7, the thick portion 322 is located on the upper side of the second cylindrical portion 32 in the z direction, and is a portion where the radial dimension is partially larger when the z direction is the axial direction. The thick portion 322 in this embodiment has a tapered surface 323 and a recess 324.

As shown in Figures 4 and 7, the tapered surface 323 is a portion of the upper z-direction side of the inner circumferential surface of the thick-walled portion 322. The tapered surface 323 is an inclined surface whose radial dimension increases as it extends upward in the z-direction.

As shown in Figures 5 and 6, the recess 324 is a portion of the thick portion 322 that is recessed downward from the upper surface in the figure. The recess 324, together with the protrusion 421 of the rotating portion 4 described below, constitutes the rotation angle restriction means of the present invention.

The rotating part 4 is a member that can rotate relative to the fixed part. As shown in Figures 4 and 7, the rotating part 4 is cylindrical overall and forms the pouring space 21 together with the fixed part 3. As shown in Figures 4 to 7, in this embodiment, the rotating part 4 has a first cylindrical part 41, a flange part 42, an outer cylinder part 43, and a nozzle part 44.

The first tubular portion 41 is a generally cylindrical portion and is located inside the second tubular portion 32 of the fixing part 3, as shown in Figure 4. As shown in Figures 4 to 7, the first tubular portion 41 of this embodiment has a cut portion 410, a first threaded portion 411, and an inclined edge 412.

The tear portion 410 is a portion that moves from the outer surface of the flat portion 125 toward its inner surface (downward in the z direction in the figure) and rotates around a central axis extending in the z direction as the rotating portion 4 rotates relative to the fixed portion 3 and the top sheet 12. In this embodiment, the tear portion 410 is integrally formed as part of the first cylindrical portion 41 of the rotating portion 4. As shown in Figures 4 and 5, the tear portion 410 is located a predetermined distance away from the central axis of the rotating portion 4 extending in the z direction (axial direction). In the initial state described below, the tip of the tear portion 410 is spaced upward in the z direction (axial direction) from the flat portion 125. Note that the tear portion in this invention is not limited to being integrally formed as part of the first cylindrical portion 41. The specific configuration of the cutting portion is not limited in any way as long as the cutting portion moves in a direction from the outer surface to the inner surface of the flat portion 125 while rotating about a central axis extending in the z direction as the rotating portion 4 rotates relative to the fixed portion 3 and the flat portion 125. For example, the cutting portion may be formed by a member separate from the first cylindrical portion 41. Alternatively, a gear member may be interposed between the cutting portion and the first cylindrical portion 41, so that when the rotating portion 4 is rotated, the rotating portion 4 moves upward in the z direction and the cutting portion moves downward in the z direction.

The specific shape and size of the cutting portion 410 are not limited, as long as it is capable of cutting the flat portion 125 of the top sheet 12. In this embodiment, the cutting portion 410 has a shape that, for example, becomes thinner toward the tip in the circumferential direction, similar to a cutting blade. Note that the cutting portion 410 is not limited to a sharp shape that can smoothly cut the flat portion 125; it may have any shape that can cut the flat portion 125 by rotation of the rotating portion 4, described below. Furthermore, in this embodiment, as shown in Figures 5 and 6, the cutting portion 410 is inclined so that it protrudes in the rotation direction as it moves toward the axial tip (the lower end in the z-direction in the figure). Here, the rotation direction refers to the direction in which the cutting portion 410 rotates when it moves from the outer surface of the flat portion 125 toward the inner surface by rotating the rotating portion 4. Furthermore, the angle formed by the tear portion 410 and the inclined edge 412 at the tip of the first tubular portion 41 is acute. This has the advantage that the tip of the tear portion 410 can be easily pierced by the flat portion 125 when opening the pouch-container package B1, which will be described later.

As shown in Figures 4 to 7, the first threaded portion 411 is formed on the outer peripheral surface of the first cylindrical portion 41. The first threaded portion 411 threadably engages with the second threaded portion 321 of the fixed portion 3. In this embodiment, due to this threaded engagement, when the rotating portion 4 is rotated clockwise as viewed from above in the z direction, the rotating portion 4 moves in a direction from the outer surface of the flat portion 125 toward its inner surface (downward in the z direction).

The inclined edge 412 is the lower edge in the z-direction of the first tubular portion 41 and is connected to the tip of the cut portion 410. As shown in Figures 4 to 7, the inclined edge 412 is inclined in the axial direction from the tip side of the cut portion 410 (lower side in the z-direction) toward the base end side of the cut portion 410 (upper side in the z-direction) as it moves from the tip side of the cut portion 410 in the direction opposite to the rotational direction.

As shown in Figures 4 to 7, the flange portion 42 is a portion that protrudes radially from the upper portion of the first cylindrical portion 41 in the z direction (axial direction). In the example shown, the flange portion 42 is generally annular, and its outer diameter is, for example, generally the same as the outer diameter of the thick portion 322 of the fixed portion 3. The flange portion 42 in this embodiment has a protrusion 421.

As shown in Figures 5 and 6, the convex portion 421 is a portion that protrudes downward from the underside of the flange portion 42 in the figure. The convex portion 421, together with the concave portion 324 of the fixing portion 3 described above, constitutes the rotation angle restriction means of the present invention.

As shown in Figures 4 and 7, the outer tubular portion 43 is positioned radially outward from the first tubular portion 41 and extends downward in the z direction from the flange portion 42. The tip portion of the outer tubular portion 43 has a tapered shape that becomes thinner as it extends downward in the z direction. When viewed from the z direction, the outer tubular portion 43 overlaps with the tapered surface 323 of the fixed portion 3.

The nozzle portion 44 is a portion for pouring out the packaged item 7 in the pouch-container package B1. As shown in Figures 4 to 7, in this embodiment, the nozzle portion 44 extends upward in the z direction from the upper inner edge of the flange portion 42. The shape of the nozzle portion 44 is not limited in any way, and in the example shown, it is a tapered cylinder whose diameter decreases as it extends upward in the z direction.

The cap portion 5 is a member that closes the pouring space 21 of the spout 2 from above in the z-direction. The specific configuration of the cap portion 5 is not limited in any way. In this embodiment, the cap portion 5 is configured as a separate member from the rotating portion 4 and is configured to fit into the rotating portion 4. More specifically, when the cap portion 5 is fitted into the flange portion 42 of the rotating portion 4, a portion of the cap portion 5 closes the tip of the nozzle portion 44. The cap portion 5 may be configured to be fixed to the rotating portion 4 by a method such as screwing. The cap portion 5 may also be formed integrally with the rotating portion 4, or may be configured to be openable and closable so that the nozzle portion 44 can be switched between a closed and an open state.

As shown in Figures 4 to 7, the band-shaped portion 6 is provided between the thick portion 322 of the fixed portion 3 and the flange portion 42 of the rotating portion 4. In the illustrated example, the band-shaped portion 6 surrounds the first cylindrical portion 41 and outer cylindrical portion 43 of the rotating portion 4 from the radially outer side. The band-shaped portion 6 is detachable from the fixed portion 3 and the rotating portion 4, and in the illustrated example, is connected to the rotating portion 4 at multiple points. The band-shaped portion 6 also has a knob portion 61. The knob portion 61 is provided at one end of the band-shaped portion 6 and is shaped to be easily gripped by the user. The band-shaped portion 6 functions to prevent the rotating portion 4 from approaching the fixed portion 3.

Next, the opening of the pouch container package B1 will be explained below with reference to Figures 10 to 19.

Figure 4 shows an unopened pouch-container package B1. To open this pouch-container package B1 and pour out the packaged item 7, first, as shown in Figures 10 and 11, the band-shaped portion 6 is removed from the rotating portion 4, for example, by pinching the tab 61. In this state, the rotating portion 4 has not yet rotated relative to the fixed portion 3. This state is called the initial state. In the initial state, the circumferential positions of the recessed portion 324 of the fixed portion 3 and the protruding portion 421 of the rotating portion 4 are approximately aligned. Furthermore, the tip of the tearing portion 410 is spaced upward in the z direction (axial direction) from the flat portion 125. In the illustrated example, a case will be described in which the circumferential position of the tip of the tearing portion 410 is approximately aligned with the recessed portion 324 and the protruding portion 421, but this is merely an example and is in no way limiting.

Figure 14 shows the relationship between the rotating portion 4 (cutting portion 410) and the flat portion 125 of the top sheet 12 in the initial state. Figure 14 (a) is a schematic diagram of the flat portion 125 of the top sheet 12 viewed from below in the z direction (axial direction). The rotational orbit 40 is a virtual line formed by projecting the orbit drawn by the tip of the cutting portion 410 due to the rotation of the rotating portion 4 onto the flat portion 125 along the z direction. As described below, in this embodiment, the rotating portion 4 is configured to rotate approximately 360° from the initial state until the cutting of the flat portion 125 is complete, and the rotational orbit 40 is approximately a perfect circle. The rotation angle from the initial state until the cutting of the top sheet 12 is complete can be set as appropriate and may be, for example, 540° to 1080°. In such a case, there is a margin for rotating the rotating portion 4 by 0.5 to 2 rotations from the initial state until the tearing portion 410 comes into contact with the flat portion 125, and by this amount, the tip of the tearing portion 410 can be further away in the z direction from the flat portion 125 in the initial state. As described above, the easy tear line 120 is a linear portion that is provided on the flat portion 125 and is made to be easy to tear. In FIG. 1A, for ease of understanding, the easy tear line 120 is shown by a dotted line. Furthermore, a portion of the easy tear line 120 overlaps with the rotation orbit 40, and this portion is shown only by the dotted line indicating the easy tear line 120.

Point P0 is the circumferential position of the tip of the tearing portion 410 in the initial state. In this embodiment, the rotating portion 4 rotates clockwise relative to the fixed portion 3 when viewed from above in the z direction, so in Figure 1(a), the tearing portion 410 rotates counterclockwise. In this embodiment, the easy-to-tear line 120 is located at a position circumferentially away from point P. The distance (angle) between point P and the end of the easy-to-tear line 120 is not particularly limited and is, for example, approximately 15° to 60°. The easy-to-tear line 120 has a portion that overlaps with the rotation orbit 40 when viewed from the z direction (axial direction). The easy-to-tear line 120 may be configured so that the entire easy-to-tear line 120 overlaps with the rotation orbit 40, or it may be configured so that only a portion of the easy-to-tear line 120 overlaps with the rotation orbit 40. In the illustrated example, between ½ and ¾ of the easy-to-tear line 120 overlaps with the rotation orbit 40. The easy-to-tear line 120 also has an outward guide portion 1201. The outward guide portion 1201 is provided near the end of the rotation orbit 40 (easy-to-tear line 120) of the tearing portion 410 when viewed from the z direction (axial direction), and is located radially outward with respect to the rotation orbit 40. The angle at which the easy-to-tear line 120 is provided is not limited in any way, and is provided in an angle range of 45° to 345°, for example.

Figure 14(b) is a perspective view of the main part of the flat portion 125 of the top sheet 12, viewed from diagonally below in the z direction (axial direction). In the initial state shown in Figure 14(b), the flat portion 125 and the cut portion 410 are shown. In the initial state, the tip of the cut portion 410 is spaced upward in the z direction from the flat portion 125, and as described above, its circumferential position is at point P0. For ease of understanding, Figures 14(a) and 14(b) show an auxiliary line that passes through point P0 and is parallel to the y direction, as well as an auxiliary line that is perpendicular to the auxiliary line. The description of Figures 15 to 19 is the same as that of Figure 14.

Next, as shown in Figures 10 and 11, after removing the band-shaped portion 6, the rotating portion 4 is rotated relative to the fixed portion 3. In this embodiment, the rotating portion 4 and the cap portion 5 are rotated integrally. Figures 11 and 15 show the state in which the tearing portion 410 has rotated circumferentially to point P1. In this state, the rotation of the rotating portion 4 causes the tearing portion 410 to approach the flat portion 125 in the z direction, and the tip of the tearing portion 410 abuts against the flat portion 125. This state marks the start of the tearing portion 410 tearing the flat portion 125. Therefore, the flat portion 125 is not torn in the range from point P0 to point P1. In this embodiment, a tear-ease line 120 is provided from near point P1 where the tearing portion 410 abuts against the flat portion 125.

Figure 16 shows the state in which the rotating portion 4 is further rotated and the tearing portion 410 has reached point P2 in the circumferential direction. By rotating the rotating portion 4 from the state shown in Figure 15 to the state shown in Figure 16, the tearing portion 410 moves further downward in the z direction while rotating around the z direction, moving circumferentially from point P1 to point P2. As a result, a portion of the flat portion 125 is torn by the tearing portion 410. In this embodiment, the tearing portion 410 tears the flat portion 125 along the tear-ease line 120 from point P1 to point P2.

Figure 17 shows the state in which the rotating portion 4 is further rotated and the tear portion 410 has reached point P3 in the circumferential direction. By rotating the rotating portion 4 from the state shown in Figure 16 to the state shown in Figure 17, the tear portion 410 moves further downward in the z direction while rotating around the z direction, moving circumferentially from point P2 to point P3. As a result, the flat portion 125 is further torn by the tear portion 410. In this embodiment, the tear portion 410 cuts the flat portion 125 along the tear easy line 120 from point P2 to point P3. As the flat portion 125 is torn from point P1 to point P3, a tear piece 122 is formed in the flat portion 125. The tear piece 122 is a portion defined by the arc-shaped tear line 121 formed by the tear portion 410.

Figure 18 shows the state in which the rotating part 4 is further rotated and the tearing portion 410 has reached point P4 in the circumferential direction. By rotating the rotating part 4 from the state shown in Figure 17 to the state shown in Figure 18, the tearing portion 410 moves further downward in the z direction while rotating around the z direction, moving circumferentially from point P3 to point P4. As a result, the flat portion 125 is further torn by the tearing portion 410, and in the example shown, it is clearly no longer flat. In this embodiment, the tearing portion 410 tears the top sheet 12 (flat portion 125) along the tear-ease line 120 from point P3 to point P4. As the tearing of the top sheet 12 (flat portion 125) progresses, the tear piece 122 expands.

12 and 19 show the state in which the rotating part 4 is further rotated and the tearing portion 410 reaches point P5 in the circumferential direction. Point P5 is approximately the same position as point P0. By rotating the rotating part 4 from the state shown in FIG. 18 to the state shown in FIG. 19, the tearing portion 410 moves further downward in the z direction while rotating around the z direction, moving circumferentially from point P4 to point P5. In this embodiment, the tearing ease line 120 overlaps with the rotational orbit 40 in the range from point P0 to point P4, and from point P4 onwards, an outer guide portion 1201 is provided, located radially outward from the rotational orbit 40. Therefore, although the tearing portion 410 moves from point P4 to point P5, the tearing of the top sheet 12 (flat portion 125) progresses along the outer guide portion 1201. As a result, the tearing portion 410 moves from point P4 to point P5, tending to be positioned radially inward relative to the tear piece 122. As shown in FIG. 12 , in this state, the convex portion 421 fits into the concave portion 324. This prevents further rotation of the rotating portion 4. In this manner, the concave portion 324 and the convex portion 421 restrict the rotation of the tearing portion 410, which began at point P0, to point P5. That is, the concave portion 324 and the convex portion 421 restrict the rotation of the rotating portion 4 to less than 360° after point P1, when the tearing portion 410 begins tearing the top sheet 12 (flat portion 125), and constitute a rotation angle restricting means of the present invention. Note that the specific configuration of the rotation restricting means is not limited to a configuration consisting of the concave portion 324 and the convex portion 421. For example, the rotation restricting means may be configured by a convex portion formed on the fixed portion 3 and a concave portion formed on the rotating portion 4. Furthermore, when one of the fixed part 3 and the rotating part 4 is configured to cover the other, the rotation control means may be constituted by a convex or concave part formed on the inner surface of the one located on the outside and a concave or convex part formed on the outer surface of the one located on the inside.

By tearing the tearing portion 410, an opening corresponding to the size of the tear piece 122 is formed in the portion of the top sheet 12 surrounded by the flange portion 31 (flat portion 125), and the container body 1 is opened. Then, for example, as shown in Figure 13, by removing the cap portion 5 from the rotating portion 4, the packaged item 7 can be poured out from the nozzle portion 44. The above steps complete the opening of the pouch container package B1.

Next, we will explain the functions of the pouch container packaging A1 and the pouch container package B1.

According to this embodiment, as shown in Figures 14 to 19, the tearing portion 410 moves in a direction from the outer surface toward the inner surface of the flat portion 125 of the top sheet 12 while rotating in a rotational orbit 40 around a central axis extending in the z direction (axial direction), thereby tearing the flat portion 125. This makes it possible to more reliably tear the flat portion 125. For example, in a configuration in which the container body 1 is opened by piercing the flat portion 125, it is possible that the container body may not be sufficiently pierced due to the ductility of the container body. However, this embodiment reduces this risk. Therefore, with the pouch container package A1 and pouch container package B1, the container body 1 can be opened more reliably.

Furthermore, the flange portion 31 of the fixing part 3 is formed into a flat annular shape, as shown in Figure 5. This makes it possible to more reliably maintain flatness in the portion of the flat portion 125 that overlaps with the flange portion 31 when viewed from the z direction, and in the portion located inside the flange portion 31, as shown in Figures 4 and 7. This makes it easier for the tearing portion 410 to tear.

As shown in Figure 12, by providing a rotation angle limiting means consisting of the recess 324 of the fixed part 3 and the protrusion 421 of the rotating part 4, the rotation of the rotating part 4 after the tearing part 410 starts tearing is limited to less than 360°. Therefore, as shown in Figure 19, it is possible to set the range of the flat part 125 from point P0 (point P5) to point P1 as an area that will not be torn by the tearing part 410. This makes it possible to prevent the tear piece 122 from unintentionally detaching from the flat part 125, and to prevent the tear piece 122 from being mixed into the packaged item 7.

As shown in Figures 5 and 6, the cutting portion 410 is integrally formed with the rotating portion 4, and rotating the rotating portion 4 rotates the cutting portion 410 itself. This allows the force that rotates the rotating portion 4 to be efficiently transmitted to the cutting portion 410, allowing the flat portion 125 to be cut more reliably.

As shown in Figures 5 and 6, the tearing section 410 is inclined so that the tip in the z direction (axial direction) is positioned in the rotational direction. This allows the tip of the tearing section 410 to enter the radially inner side of the tear piece 122, as shown in Figure 19, preventing the tear piece 122 from collapsing inward. This is advantageous for preventing the tear piece 122 from blocking the opening of the top sheet 12 and hindering the pouring of the packaged item 7.

As shown in Figures 5 and 6, the first cylindrical portion 41 has an inclined edge 412. This gives the first cylindrical portion 41 a shape that includes a portion that supports the cutting portion 410 from the direction opposite to the rotational direction. This is preferable for preventing the cutting portion 410 from being unintentionally deformed or damaged when the cutting portion 410 cuts the flat portion 125.

As shown in Figures 9 and 14 to 18, an easy-to-tear line 120 is formed on the flat portion 125. This allows the tearing portion 410 to tear the flat portion 125 more smoothly. It also prevents the flat portion 125 from being torn at an unintended location. In the example shown, the easy-to-tear line 120 is not provided in the range from point P0 to point P1. This makes it possible to make this range difficult to tear, and prevents the tear piece 122 from detaching from the flat portion 125.

The easy-to-tear line 120 also has an outward guide portion 1201. The outward guide portion 1201 is provided near the end of the rotational orbit 40 (easy-to-tear line 120) and is positioned radially outward from the rotational orbit 40. This makes it possible to tear the flat portion 125 radially outward from the rotational orbit 40, and as shown in Figure 19, the tear portion 410 can be more reliably positioned radially inward from the tear piece 122. This is preferable for increasing the effect of the tear portion 410 in preventing the tear piece 122 from collapsing.

By providing a strip-shaped portion 6 on the spout 2, it is possible to prevent the rotating portion 4 from being rotated unintentionally during transportation, display, etc., and the flat portion 125 from being unduly torn.

Figures 20 to 26 show other examples of the present invention. In these figures, elements that are the same as or similar to those in the above embodiment are given the same reference numerals as those in the above embodiment.

<Spout 2 First Modification>
20 shows a first modified example of the spout 2. In this example, the cut portion 410 has a shape that is approximately parallel to the z direction and is not inclined relative to the z direction.

This modified example also allows the container body 1 to be opened more reliably. Furthermore, as can be seen from this modified example, there are no limitations on the specific shape of the tearing portion 410, such as its inclination, and it is sufficient that the tearing portion 410 has a shape that allows it to tear the flat portion 125.

<Spout 2 Second Modification>
21 shows a second modified example of the spout 2. In this example, the cut portion 410 is inclined so that it is positioned in the opposite direction to the rotation direction as it approaches the axial tip (the lower end in the z direction in the drawing).

This modified example also allows the container body 1 to be opened more reliably. Furthermore, this modified example also prevents the tearing portion 410 from unintentionally deforming when the flat portion 125 is torn.

<Spout 2 Third Modification>
22 shows a third modified example of the spout 2. In this example, the first cylindrical portion 41 does not have the inclined edge 412 of the above-described example. A tear portion 410 is provided in a portion of the first cylindrical portion 41 that protrudes downward in the z direction.

This modified example also allows the container body 1 to be opened more reliably. Furthermore, as can be seen from this modified example, the first tubular portion 41 may be configured without the inclined edge 412. Depending on the shape and material of the tearing portion 410 and the thickness and material of the top sheet 12, the tearing portion 410 of the shape of this example may be configured to be able to properly tear the flat portion 125.

<Spout 2 Fourth Modification>
23 shows a fourth modified example of the spout 2. In this example, the first cylindrical portion 41 has a protrusion 413. The protrusion 413 is positioned in the rotational direction relative to the cut portion 410 and protrudes downward in the z-direction from the inclined edge 412. However, the protrusion 413 is sized so as not to protrude from the cut portion 410 in the z-direction.

This modified example also allows the container body 1 to be opened more reliably. Furthermore, by providing the protrusion 413, it is possible to more reliably prevent the tear piece 122 from collapsing inward in the state shown in Figure 19. This allows the packaged item 7 to be poured out more smoothly.

<Spout 2, Fifth Modification>
24 shows a fifth modified example of the spout 2. In this example, the rotating part 4 and the cap part 5 are integrally formed via a hinge 49. By rotating the cap part 5 around the hinge 49 as the rotation center, the nozzle part 44 of the rotating part 4 can be closed or opened by the cap part 5 as desired. This configuration in which the rotating part 4 and the cap part 5 are integrally formed via the hinge 49 can also be used in appropriate combination in other examples.

In addition, in this example, the rotating portion 4 has a third cylindrical portion 45. The third cylindrical portion 45 is provided on the outside of the first cylindrical portion 41 so as to surround the first cylindrical portion 41. A first threaded portion 451 is formed on the inner surface of the third cylindrical portion 45.

The fixed portion 3 has a fourth cylindrical portion 33. The fourth cylindrical portion 33 is provided on the outside of the second cylindrical portion 32 so as to surround the second cylindrical portion 32. A second threaded portion 321 is formed on the outer surface of the second cylindrical portion 32. The second threaded portion 321 and the first threaded portion 451 are threadedly engaged with each other in the same manner as the second threaded portion 321 and the first threaded portion 411 in the above example, and regulate the movement of the rotating portion 4 relative to the fixed portion 3. Furthermore, in this example, when the rotating portion 4 is lowered relative to the fixed portion 3 by rotating the rotating portion 4 after removing the band-shaped portion 6, the lower end of the third cylindrical portion 45 abuts against the flange portion 31, or the upper end of the fourth cylindrical portion 33 abuts against the collar portion 42, thereby restricting the descent of the rotating portion 4.

This modified example also allows the container body 1 to be opened more reliably. Furthermore, as can be seen from this modified example, the specific configuration of the spout 2 is not limited in any way, and various configurations can be adopted in appropriate combination.

<First Modification of Top Sheet 12>
FIG. 25 shows a modified example of the tear-easy line 120 on the flat portion 125 of the top sheet 12.
In this example, the tear-easy line 120 has an outer guide portion 1201 and an outer guide portion 1202. The outer guide portion 1202 is located in the opposite direction to the rotation direction relative to the outer guide portion 1201. Furthermore, the outer guide portion 1202 is located radially inward relative to the outer guide portion 1201 and radially outward relative to the rotation orbit 40.

This modification also allows the container body 1 to be opened more reliably. Furthermore, by providing the outward guide portion 1202, it is possible to guide the tearing from along the rotational orbit 40 to along the outward guide portion 1202 and then along the outward guide portion 1201. As can be seen from this modification, the specific shape and size of the easy-to-tear line 120 are not limited in any way. For example, the easy-to-tear line 120 may not have the outward guide portions 1201, 1202, etc., and may be configured to coincide with the rotational orbit 40 when viewed from the z direction (simply circular). Furthermore, the easy-to-tear line 120 may form a double or triple circle. Furthermore, a portion or the entire easy-to-tear line 120 may be configured to be located radially inward from the rotational orbit 40 when viewed from the z direction. Furthermore, the easy-to-tear line 120 may be configured with multiple regions spaced apart from each other from its starting point (e.g., the above-mentioned point P0) to its end point (e.g., the above-mentioned point P5).

<Second Modification of Top Sheet 12>
26 shows a modified example of the flat portion 125 of the top sheet 12. In this example, the flat portion 125 is not provided with the easy tear line 120 in the above-mentioned example.

This modified example also allows the container body 1 to be opened more reliably. Furthermore, even in a configuration in which the easy-to-tear line 120 is not provided, the flat portion 125 can be torn by the tear portion 410 depending on the shape and material of the tear portion 410 and the thickness and material of the top sheet 12.

According to tests conducted by the inventors, even when the flat portion 125 does not have the easy tear line 120 having the outward guide portion 1201, it has been confirmed that the flat portion 125 tends to tear radially outward relative to the rotational orbit 40 in the range from point P4 to point P5, and the tear portion 410 tends to be located radially inward relative to the tear piece 122, as shown in FIG. 19( b). The reason for this is that, first, when the first cylindrical portion 41 moves downward in the z direction with the rotation of the rotating part 4, a portion of the first cylindrical portion 41 that is located in the rotational direction relative to the tear portion 410 descends to a position overlapping the flat portion 125 in the z direction. This portion pushes the flat portion 125 downward in the z direction ahead of the tear portion 410. This downward pressure causes the tear line 121 in the flat portion 125 to advance. It was also found that the progression of this tearing tended to be in the direction in which the tip of the tear line 121 was pointing, that is, in the tangent direction of the rotation orbit 40 .
As a result, it is believed that the tear portion 410 was positioned radially inward of the tear piece 122 .

The pouch-container packaging body and pouch-container package of the present invention are not limited to the above-described embodiments. The specific configuration of each part of the pouch-container packaging body and pouch-container package of the present invention can be freely designed in various ways.

A1: Pouch container packaging B1: Pouch container package 1: Container body 2: Spout 3: Fixed portion 4: Rotating portion 5: Cap portion 6: Belt-shaped portion 7: Packaged item 11: Body sheet 12: Top sheet 17: Seal portion 21: Pour-out space 31: Flange portion 32: Second cylindrical portion 33: Fourth cylindrical portion 40: Rotating orbit 41: First cylindrical portion 42: Flange portion 43: Outer cylindrical portion 44: Nozzle portion 45: Third cylindrical portion 61: Handle portion 101: Base film layer 102: Sealant film layer 103: Sealant film layer 104: Barrier film layer 120: Easy tear line 121: Tear line 122: Tear piece 125: Flat portion 171: Side seal portion 172 : Top seal portion 173 : Bottom seal portion 321 : Second screw portion 322 : Thick portion 323 : Tapered surface 324 : Recess 410 : Cut portion 411 : First screw portion 412 : Sloped edge 413 : Protrusion 421 : Convex portion 451 : First screw portions 1201, 1202 : Outer guide portion

Claims (8)

a container body having a top sheet that covers the top side;
A spout fixed to the outer surface of the top sheet and having an axially extending pouring space,
The spout has a fixed portion fixed to the top sheet, a rotating portion rotatable relative to the fixed portion, and a tearing portion that tears the top sheet,
the top sheet has a flat portion that is flat when the fixing portion is fixed,
the tearing portion is positioned away from the flat portion in an initial state, and as the rotating portion rotates, the tearing portion moves while rotating in a direction from the outer surface of the flat portion toward the inner surface thereof, thereby tearing the flat portion;
the rotating portion has a first cylindrical portion that screws into the fixed portion,
the split portion is formed on a tip end side of the first cylindrical portion in the axial direction,
The tearing portion is inclined so as to protrude in the rotation direction as it approaches the axial tip . The fixing portion has a flat annular flange portion,
The pouch-container packaging body according to claim 1 , wherein the flange portion is fixed to the outer surface of the top sheet. The pouch container packaging body according to claim 1 or 2, wherein the spout has a rotation angle limiting means that limits the rotation of the rotating part to less than 360° after the tearing part starts tearing the top sheet. 4. The pouch container packaging body according to claim 1, wherein an inclined edge is provided on the axial tip side of the first cylindrical portion, the inclination of which increases from the tip side of the tearing portion toward the axial base end side in the direction opposite to the rotation direction. The top sheet has a tear line formed thereon that is easier to tear than an adjacent portion,
5. The pouch-container packaging body according to claim 1 , wherein the easy tear line overlaps with at least a part of the rotational path of the tear portion when viewed along the axial direction. a container body having a top sheet that covers the top side;
A spout fixed to the outer surface of the top sheet and having an axially extending pouring space,
The spout has a fixed portion fixed to the top sheet, a rotating portion rotatable relative to the fixed portion, and a tearing portion that tears the top sheet,
the top sheet has a flat portion that is flat when the fixing portion is fixed,
the tearing portion is positioned away from the flat portion in an initial state, and as the rotating portion rotates, the tearing portion moves while rotating in a direction from the outer surface of the flat portion toward the inner surface thereof, thereby tearing the flat portion;
The top sheet has a tear line formed thereon that is easier to tear than an adjacent portion,
the tear easy line overlaps with at least a part of the rotational path of the tear portion when viewed along the axial direction,
A packaging body for pouch containers, wherein the easy-tear line has an outer guide portion located radially outward of the rotational orbit of the tearing portion, which is provided near the end of the rotational orbit of the tearing portion when viewed along the axial direction. 7. The pouch-container package according to claim 1, wherein the spout has a removable band-shaped portion that prevents the rotating portion from rotating relative to the fixed portion. A pouch container packaging body according to any one of claims 1 to 7 ,
An item to be packaged that is hermetically contained in the container body;
A pouch container package comprising: