Sanitary tissue paper storage container

Abstract

To provide a sanitary tissue paper storage container which allows easy refilling of sanitary tissue paper.SOLUTION: There is provided a sanitary tissue paper storage container 1 with a container body 10 having a storage space S in which sanitary tissue paper P is stored. The container body 10 includes a container body upper part 11 that forms an upper part of the container body 10, a container body lower part 12 that forms a lower part of the container body 10, and a connection part 13 that connects a rear surface of the container body upper part 11 and a rear surface of the container body lower part 12, and the connection part 13 is formed to be bendable, and the container body upper part 11 is rotated around a folding line of the connection part 13 as a fulcrum, so that the storage space S of the container body lower part 12 is exposed or covered, and at least the connection part 13 is formed using polypropylene containing a random copolymer and a block copolymer.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a sanitary tissue storage container. [Background technology]

[0002] A known sanitary tissue paper storage container for storing sanitary tissue paper such as wet tissues includes a container body having an extraction hole for removing the sanitary tissue paper stored inside, and an opening / closing lid that is rotatably connected to the container body and closes the extraction hole so as to be able to be opened and closed freely. Furthermore, a container body is known that has a structure in which the upper and lower parts are rotatably connected, and when refilling sanitary tissue paper, the container body is opened by separating parts of the upper and lower parts (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7241607 Summary of the Invention [Problem to be solved by the invention]

[0004] In a sanitary tissue paper storage container like that in Patent Document 1, it has been desired to be able to more easily refill the sanitary tissue paper.

[0005] An object of the present invention is to provide a sanitary tissue paper storage container that allows easy refilling of sanitary tissue paper. [Means for solving the problem]

[0006] In order to solve the above problems, the invention described in claim 1 is: A sanitary tissue paper storage container having a container body having a storage space for storing sanitary tissue paper therein, The container body includes a container body upper portion forming an upper portion of the container body, a container body lower portion forming a lower portion of the container body, and a connecting portion connecting a rear surface of the container body upper portion and a rear surface of the container body lower portion, The connection portion is formed to be foldable, and is configured to expose or shield the storage space in the lower portion of the container body by rotating the upper portion of the container body about a folding line of the connection portion as a fulcrum, At least the connecting portion is formed using polypropylene, and the polypropylene contains a random copolymer and a block copolymer.

[0007] The invention described in claim 2 is the sanitary tissue paper storage container described in claim 1, The upper and lower portions of the container body are made of polypropylene, and the polypropylene contains a random copolymer and a block copolymer.

[0008] The invention described in claim 3 is the sanitary tissue paper storage container described in claim 2, A locking portion is provided on the front surface of the upper portion of the container body, An engagement protrusion is provided on the front surface of the lower portion of the container body, The container body is characterized in that the locking portion is configured to engage with the engaging projection when the upper portion of the container body is rotated to cover the storage space in the lower portion of the container body.

[0009] The invention described in claim 4 is the sanitary tissue paper storage container described in claim 2, The container body upper portion has a lower end provided with an annular inner edge portion, An annular groove is provided at the upper end of the lower portion of the container body, The container body is characterized in that the inner edge portion is configured to fit into the recessed groove portion when the upper portion of the container body is rotated to cover the storage space in the lower portion of the container body.

[0010] The invention described in claim 5 is the sanitary tissue paper storage container described in claim 4, A locking portion is provided on the front surface of the upper portion of the container body, An engagement protrusion is provided on the front surface of the lower portion of the container body, The container body is characterized in that the locking portion is configured to engage with the engaging projection when the upper portion of the container body is rotated to cover the storage space in the lower portion of the container body.

[0011] The invention described in claim 6 is a sanitary tissue paper storage container according to any one of claims 1 to 5, The polypropylene has a characteristic that the blending ratio of the random copolymer to the block copolymer is 99:1 to 3:1. Effect of the Invention

[0012] According to the present invention, a sanitary tissue paper storage container that allows easy refilling of sanitary tissue paper is obtained. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a perspective view showing the sanitary tissue paper storage container of the present embodiment. [Diagram 2] 1 is a perspective view showing the sanitary tissue paper storage container of the present embodiment with the opening / closing lid open. FIG. [Diagram 3] 1 is a rear perspective view showing the sanitary tissue paper storage container of this embodiment with the opening / closing lid open. FIG. [Figure 4] 1 is an oblique view showing a state in which the top of the container body of the sanitary tissue paper storage container of this embodiment is open. FIG. [Diagram 5] This is a front view showing the sanitary tissue paper storage container with the button removed from the top of the container body and the opening and closing lid open. [Figure 6] This is a front view showing the sanitary tissue paper storage container with the top of the container body open. [Figure 7] FIG. 2 is a bottom view showing the sanitary tissue paper storage container. [Figure 8] FIG. 2 is a cross-sectional view taken along line VIII-VIII in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of a sanitary tissue paper storage container according to the present invention will be described in detail with reference to the drawings. However, the embodiment described below is subject to various technically preferable limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiment and illustrated examples.

[0015] In the following, the X-axis, Y-axis, and Z-axis as well as the front-rear, left-right, and up-down directions are defined as shown in each figure. That is, the side of the sanitary tissue paper storage container with the opening / closing lid is the "top", the opposite side is the "bottom", the side where the container body and the opening / closing lid are connected is the "rear", the opposite side is the "front", the right hand side as viewed from the front is the "right", and the left hand side is the "left", and the axis along the front-rear direction is the X-axis, the axis along the left-right direction is the Y-axis, and the axis along the up-down direction is the Z-axis. When the upper part of the container body rotates relative to the lower part of the container body, the direction in which the upper part of the container body faces changes. However, the direction will be explained based on the state in which the upper and lower parts of the container body are combined and the storage space S is sealed, as shown in Figure 1.

[0016] [Configuration of the embodiment] (Overall composition) As shown in Figures 1 to 4, the sanitary tissue paper storage container 1 includes a container body 10 having an extraction hole 113a for removing the sanitary tissue paper P stored inside, an opening / closing lid 2 which is rotatably attached to the container body 10 and is a lid body for opening and closing the extraction hole 113a, and a button section 3 which switches between a closed lid state in which the opening / closing lid 2 blocks the extraction hole 113a and an open lid state in which the opening / closing lid 2 opens the extraction hole 113a. A storage space S in which sanitary tissue paper P is stored is formed inside this sanitary tissue paper storage container 1.

[0017] (hygienic tissue paper) For example, a so-called pop-up type sheet is used as the sanitary thin paper P, in which wet sheets (wet tissues) are alternately folded and stacked so that when one wet sheet (wet tissue) is pulled out, the next wet sheet (wet tissue) is also pulled out. Alternatively, for example, a roll sheet can be used in which a long wet sheet (wet tissue) is wound into a roll with perforations at regular intervals along its length and is to be torn along the perforations for use.

[0018] (Container body) As shown in Figures 1 to 4, for example, the container body 10 is formed as a roughly rectangular parallelepiped that is longer in the left-right direction than in the front-to-back and up-down directions, and is divided into two parts, upper and lower, above the center in the up-down direction, to form an upper container body 11 that constitutes the upper part of the container body 10, and a lower container body 12 that constitutes the lower part of the container body 10. The upper and lower container body sections 11 and 12 are connected to each other by a connecting section 13 at the rear surface of the container body 10 . The upper container body portion 11, the lower container body portion 12, and the connecting portion 13 are integrally formed by a method such as injection molding. The container body 10, which includes the container body upper part 11, the container body lower part 12, and the connection part 13, is made of polypropylene, as described below.

[0019] As shown in Figures 1 to 4, for example, the container body 10 is formed such that, when the container body upper part 11 and the container body lower part 12 are combined and the internal storage space S is sealed, the container body 10 as a whole has a size of preferably 60 mm to 150 mm, more preferably 80 mm to 100 mm in the front-to-back direction, preferably 80 mm to 200 mm, more preferably 145 mm to 165 mm in the left-to-right direction, and preferably 30 mm to 100 mm, more preferably 50 mm to 70 mm in the up-down direction. The thickness of each surface is preferably 0.5 to 3.0 mm, and more preferably 1.0 to 2.0 mm. This size and thickness ensure high molding efficiency and achieve sufficient strength for practical use.

[0020] (Connection) As shown in Figs. 3 and 4, the sanitary tissue paper storage container 1 is formed so as to rotate about a connection part 13 that connects an upper part 11 and a lower part 12 of the container body as a fulcrum. This allows the storage space S to be exposed to the outside, as shown in Fig. 4. To cover the storage space S, the user only needs to rotate the upper part 11 of the container body in the opposite direction to that described above. This connection portion 13 is formed to be thinner than other portions of the container body 10, and is therefore easier to bend, making it easier to rotate the upper portion 11 of the container body relative to the lower portion 12 of the container body using the connection portion 13 as a fulcrum. Specifically, the connection portion 13 connecting the rear surface of the upper portion 11 of the container body to the rear surface of the lower portion 12 of the container body is a thin plate-like connection portion (thin plate-like member) having a rectangular shape that is elongated in the left-right direction.

[0021] In other words, this connection portion 13 can be bent along a fold line along the left-right direction, and by rotating the upper portion 11 of the container body using that fold line as a fulcrum (axis), the storage space S of the lower portion 12 of the container body can be exposed or covered. In this manner, the connection portion 13 that can be bent using the connection portion as a fulcrum is made of polypropylene. In particular, the polypropylene constituting the connecting portion 13 contains a random copolymer and a block copolymer. Since the connecting part 13 is formed from polypropylene containing a random copolymer and a block copolymer, the connecting part 13 is easy to bend and has durability against repeated deformation. This makes it easier to rotate the upper container body 11 relative to the lower container body 12 with the connection part 13 as a fulcrum, making it easier to expose or cover the storage space S of the lower container body 12, making it easier to refill the sanitary tissue paper P.

[0022] In addition, by dividing the container body 10 into an upper container body 11 and a lower container body 12 above the vertical center, when the sanitary tissue paper P is covered with a specified packaging material and stored in the storage space S, the risk of the end seal portion of the packaging material being pinched between the upper container body 11 and the lower container body 12 when the storage space S is sealed can be reduced, making it even easier to refill the sanitary tissue paper P. The position where the container body 10 is divided into the upper container body 11 and the lower container body 12 may be near the center in the up-down direction.

[0023] (Upper part of container body) The upper part 11 of the container body is formed, for example, as shown in Figures 1 to 6, into an approximately rectangular parallelepiped shape with a roughly rectangular opening on the lower side, and a recess 112 that is concave downward is formed near the center of the top surface portion 111 that forms the upper surface, and an extraction portion 113 having an extraction hole 113a for removing sanitary tissue paper P from the storage space S is provided in the center of the recess 112. Furthermore, at the rear end of the recess 112, a storage recess 115 in which a biasing member 114 is stored is formed. In addition, the lower end (opening) of the upper part 11 of the container body is formed with a ring-shaped outer edge portion 116 and a ring-shaped inner edge portion 117 that is located inside the outer edge portion 116 and protrudes downward more than the outer edge portion 116. A handle 118 is formed at the lower end of the front surface of the upper portion 11 of the container body to be gripped when exposing the storage space S.

[0024] (Material of the upper part of the container body) The upper part 11 of the container body is made of a hard material. In this embodiment, polypropylene, which is a hard plastic, is used as the hard material, and the upper part 11 of the container body is made of polypropylene. In particular, the polypropylene constituting the upper portion 11 of the container body contains a random copolymer and a block copolymer. Moreover, it is preferable that the portion made of an elastic material (to be described later) and the portion made of a hard material are integrally formed by injection molding.

[0025] (recess) The recess 112 is formed near the center of the top surface 111 in a plan view, for example, as shown in Fig. 2. Fig. 2 illustrates a case in which the shape of the recess 112 is a curved, approximately rectangular shape that reaches the front end of the container body upper portion 11 in a plan view, but the specific shape of the recess 112 is not limited thereto.

[0026] The depth of recess 112 in the vertical direction is preferably 5 mm to 20 mm when viewed from top surface 111. The size in a plan view is not particularly limited as long as removal portion 113 can be formed therein, but is preferably 40 mm to 80 mm in the front-rear direction and 40 mm to 120 mm in the left-right direction.

[0027] (Ejecting part) The removal portion 113 is formed near the center of the recess 112 when viewed in a plane, and is a portion made of an elastic material. A roughly spherical bulge 113b is formed approximately in the center of the removal portion 113, and a removal hole 113a is provided in the bulge 113b. Additionally, the edge of the removal hole 113a is provided with three protruding pieces 113c protruding from the edge on the front side toward the center of the removal portion 113.

[0028] It is preferable that the removal portion 113 is formed in a film shape with a thickness of 0.5 mm to 2.0 mm in the vertical direction, for example. As the elastic material forming the removal portion 113, etc., for example, a material having elasticity such as silicone rubber or styrene-butadiene-based, polyester-based, polyethylene-based, urethane-based, or other TPE (Thermoplastic Elastomers) can be used, and it is preferable that the hardness is 20 to 90. If the hardness of the elastic material is lower than the above value, it is undesirable since it is too soft and difficult to mold, resulting in poor molding efficiency. Furthermore, if the hardness of the elastic material is higher than the above value, the removal section 113, in which the removal hole 113a for removing the sanitary tissue paper P is formed, becomes hard, creating too much resistance, making it difficult to remove the sheets one by one, and it is also difficult to insert fingers into the storage space S when pulling out the sheets, which is undesirable. The above hardness is measured according to JIS K 6253 (type A durometer).

[0029] (Ejection hole) The removal hole 113a is a hole formed in the center of the removal portion 113 in a plan view, and connected to the storage space S. For example, in Fig. 2, the extraction hole 113a has a shape of a triangle with each side protruding inward like an arc, and three slits intersect at the center of gravity so as to connect each vertex with the center of gravity, forming a roughly inverted Y shape. Of the three slits, the width of the slit extending in the front-rear direction is wider than the width of the other slits. The number of slits may be fewer or more than this, and for example, the extraction hole 113a may be formed by inserting two slits in a cross shape.

[0030] The removal section 113 has an elastic material surrounding the removal hole 113a, which allows it to apply an appropriate resistance to the sanitary thin paper P and serves the function of holding the next sanitary thin paper P after the sanitary thin paper P stored in the storage space S is pulled out. Furthermore, when the sanitary thin paper P is a roll sheet, the take-out unit 113 serves to cut the sanitary thin paper P at cutting perforations provided in the sanitary thin paper P.

[0031] (projection) The protruding piece 113c is a portion against which the sanitary thin paper P pulled out from the outlet hole 113a comes into sliding contact, and is provided to provide an appropriate resistance to the sanitary thin paper P pulled out from the outlet hole 113a. Specifically, when a user opens the opening / closing lid 2 of the sanitary tissue paper storage container 1 to remove the sanitary tissue paper P, the user reaches out from the front side of the sanitary tissue paper storage container 1 and pulls out the sanitary tissue paper P from the removal hole 113a so that the opening / closing lid 2, which is in an upright position at the rear of the sanitary tissue paper storage container 1, does not get in the way of the action of removing the sanitary tissue paper P, and the sanitary tissue paper P pulled out from the removal hole 113a comes into sliding contact with the protrusion 113c on the front edge. At this time, the protrusion 113c protruding backward from the front edge slides against the sanitary thin paper P as it is pulled out toward the front from the removal hole 113a, so that the protrusion 113c applies an appropriate resistance to the sanitary thin paper P, preventing the sanitary thin paper P from being pulled out too far from the removal hole 113a.

[0032] In other words, the protrusion 113c protruding rearward from the front edge applies an appropriate frictional force to the sanitary thin paper P being pulled forward from the removal hole 113a, and has the function of preventing the next sanitary thin paper P pulled out after the sanitary thin paper P to be pulled out and used from being pulled too far out of the removal hole 113a. The next sanitary thin paper P pulled out following the sanitary thin paper P to be used will be held in the removal hole 113a with its end pulled out at an appropriate length.

[0033] Further, the end of the sanitary thin paper P thus held in the take-out hole 113a is supported by three protrusions including the protrusion 113c on the front side. The removal hole 113a that holds the end of the sanitary thin paper P is provided in the bulging portion 113b of the removal portion 113, so that the tip side of each protrusion 113c is at a higher position than the removal portion 113, which is the base surface around the bulging portion 113b. And, because the end of the sanitary thin paper P is supported at a higher position than the surrounding area by such protrusions 113c and held in the removal hole 113a, the sanitary thin paper P can be easily picked up.

[0034] (urging member) The biasing member 114 is, for example, a band-shaped member made of an elastic material as shown in Fig. 2. One end of the biasing member 114 is fixed to the rear of the recess 112, and the other end of the biasing member 114 is fixed to an insertion portion 23 (described later) of the opening / closing cover 2. This biasing member 114 biases the opening / closing lid 2 in the opening direction so as to stand up, and when the user presses the button portion 3, the opening / closing lid 2 is pushed up and stands up by rotating around the connection portion with the upper portion 11 of the container body as the rotation axis.

[0035] The biasing member 114 is formed in a band shape having a width of preferably 2 mm to 30 mm, more preferably 8 mm to 10 mm, and a thickness of preferably 0.5 mm to 3.0 mm, more preferably 1.0 mm to 2.0 mm. Since the biasing member 114 is formed to this size, it is possible to easily push up the opening / closing lid 2 when the opening / closing lid 2 is open, and the biasing member 114 can be easily folded and stored in the storage recess 115 when the opening / closing lid 2 is closed.

[0036] In addition, as shown in FIG. 2, the biasing member 114 is formed to be in an extended state when no force is applied thereto, so that when the opening / closing cover 2 is closed and the biasing member 114 is bent as shown in FIG. 8, for example, a force is generated that attempts to return the biasing member 114 to the state shown in FIG. 2. This makes it possible for the biasing member 114 to bias the opening / closing lid 2 so as to rotate it backward around the connection portion between the opening / closing lid 2 and the upper portion 11 of the container body as the rotation axis.

[0037] (Storage recess) The storage recess 115 is a recess for storing the bent portion of the biasing member 114 when the biasing member 114 is pushed downward with the opening / closing cover 2 closed, as shown in FIG. As shown in FIG. 2, the storage recess 115 is formed behind the removal portion 113 within the recess 112 and in the vicinity of the front of the biasing member 114 so as to be recessed further downward than the recess 112. The shape of the storage recess 115 is not particularly limited, but for example, it may be a roughly rectangular parallelepiped shape that is longer in the left-right direction than in the front-to-back direction, and may have enough space to store the biasing member 114 that is pressed in and bent by the opening / closing lid 2 when the opening / closing lid 2 is closed.

[0038] (Outer edge / inner edge) The outer edge portion 116 is, for example, annular as shown in FIGS. 4 to 6, and is formed at the lower end portion of the upper portion 11 of the container body. 4 to 6, the inner edge portion 117 is annular, is provided on the inside of the outer edge portion 116 at the lower end of the container body upper portion 11, and protrudes downward from the outer edge portion 116. The inner edge portion 117 is formed so as to enter a recessed groove portion 121 of the container body lower portion 12, which will be described later, when the storage space S is sealed. In addition, since the outer edge portion 116 and the inner edge portion 117 are part of the upper portion 11 of the container body, they are made of polypropylene containing a random copolymer and a block copolymer. Furthermore, the groove portion 121 (outer wall portion 1211, inner wall portion 1212) described later is also formed from the same polypropylene, so that the inner edge portion 117 of the upper container body 11 slides easily into the groove portion 121 of the lower container body 12, and the upper container body 11 and the lower container body 12 are in close contact with each other, thereby maintaining the airtightness of the storage space S in an optimal manner.

[0039] (Handle) 1 to 8, the handle portion 118 is formed integrally with the container body upper portion 11 at the center of the front surface of the container body upper portion 11 so as to protrude in an arch shape from the front surface thereof, and a gap a is formed between the handle portion 118 and the front surface of the container body 10 so that a finger can be hooked therebetween. When exposing the storage space S, the handle portion 118 is grasped, and the container body upper portion 11 is rotated with the connection portion 13 as a fulcrum. Furthermore, two locking portions 1181 are provided on the inner surface of the handle portion 118.

[0040] The shape of the handle portion 118 does not have to be an arch-shaped protruding shape, but may be any shape as long as it protrudes from the front surface of the upper portion 11 of the container body and has a gap a between it and the front surface. In addition, when the container body upper part 11 and the container body lower part 12 are engaged with each other, the handle part 118 is adapted to overlap with an engagement protrusion 123 (described later) provided on the container body lower part 12 in the front-rear direction. This results in a structure in which the engagement protrusion 123 is not visible from the front.

[0041] (Latching part) The locking portion 1181 is provided on the front surface of the upper portion 11 of the container body, as shown in, for example, FIGS. Specifically, two locking portions 1181 are provided at a predetermined interval along the left-right direction on the inner surface of the handle portion 118, and are formed to engage with the engagement protrusion 123 of the lower portion 12 of the container body when the storage space S is covered, thereby maintaining the covered state. The distance between the two locking portions 1181 is arbitrary, but may be about the width of a typical user's finger. Specifically, the locking portions 1181 are spaced apart from each other by 5 mm to 25 mm, and more preferably, are spaced apart from each other by 18 mm to 25 mm. This engaging portion 1181 is a part of the upper portion 11 of the container body, and is therefore made of polypropylene containing a random copolymer and a block copolymer. The engaging protrusion 123 described later is also formed from the same polypropylene, so that the locking portion 1181 is adapted to suitably engage with the engaging protrusion 123, and the upper container body 11 can be adapted to suitably fit into the lower container body 12 to shield the storage space S. The number of locking portions 1181 is not limited to two, and may be provided at positions spaced apart on either side of the left-right center of the inner surface of handle portion 118, for example, two on each side (four in total).

[0042] (Bottom of container body) As shown in FIG. 4, the container body lower portion 12 is formed, for example, in a substantially rectangular parallelepiped shape with a substantially rectangular opening at its upper side, and a ring-shaped recessed groove portion 121 is formed on the edge of the upper end. In addition, a non-slip portion 122 is formed on the bottom of the lower portion 12 of the container body to prevent the sanitary thin paper P stored in the storage space S from slipping when being removed from the removal hole 113a. Further, near the center of the upper end of the front surface of the lower portion 12 of the container body, an engagement protrusion 123 is formed integrally with the lower portion 12 of the container body and protrudes forward.

[0043] (Material of the bottom of the container body) The container body lower part 12 is formed of the same hard material as that used for the container body upper part 11. In this embodiment, polypropylene, which is a hard plastic, is used as the hard material, and the container body lower part 12 is formed of polypropylene. In particular, the polypropylene constituting the lower part 12 of the container body contains a random copolymer and a block copolymer.

[0044] (concave groove) The groove portion 121 is, for example, annular as shown in Figure 4, and is formed at the upper end of the lower container body 12 so that the inner edge portion 117 of the upper container body 11 fits into it when shielding the storage space S, and has an outer peripheral wall portion 1211 and an inner peripheral wall portion 1212.

[0045] (Outer wall / inner wall) The outer peripheral wall portion 1211 is formed as an outer peripheral wall surface of the container body lower portion 12, and when the storage space S is sealed, it abuts against the outer edge portion 116 of the container body upper portion 11. The inner wall portion 1212 is formed as the inner wall surface of the lower portion 12 of the container body, and as shown in FIG. 4, includes first guide portions 1212a provided at both left and right ends of the rear surface so as to protrude upward beyond the outer wall portion 1211, and second guide portions 1212b provided in multiple locations on the rear surface side. The inner edge portion 117 of the upper portion 11 of the container body slides between the outer peripheral wall portion 1211 and the inner peripheral wall portion 1212 of the recessed groove portion 121, thereby maintaining the storage space S airtight. In addition, the recessed groove portion 121 (the outer peripheral wall portion 1211 and the inner peripheral wall portion 1212) is a part of the container body lower portion 12, and is therefore made of polypropylene containing a random copolymer and a block copolymer. As described above, the groove portion 121 (outer wall portion 1211, inner wall portion 1212) and the inner edge portion 117, both of which are formed from polypropylene containing random copolymers and block copolymers, are easily brought into close contact with each other, and the upper portion 11 and the lower portion 12 of the container body are closely contacted with each other, thereby enabling the airtightness of the storage space S to be maintained in an optimal manner.

[0046] (First and second guide parts) As shown in FIG. 4, the first guide portion 1212a is provided at both left and right ends of the rear surface of the container body lower portion 12, extending across the left and right surfaces, respectively, and is higher in the vertical direction than the outer peripheral wall portion 1211 and the second guide portion 1212b. The second guide portions 1212b are wavy and provided in multiple numbers along the left-right direction on the rear surface of the container body lower portion 12, and are higher in the up-down direction than the outer circumferential wall portion 1211 but lower than the first guide portions 1212a.

[0047] (Anti-slip part) The anti-slip portion 122 is formed at the bottom of the container body lower portion 12 from an elastic material surrounded by a hard material, for example, as shown in FIG. Specifically, as shown in Figures 6 to 8, anti-slip portions 122 made of an elastic material and having an approximately circular shape are provided at the four corners of the bottom of the lower part of the container body 12, and the anti-slip portions 122 are exposed to the outer surface side from the bottom of the lower part of the container body 12. The anti-slip portion 122 exposed on the outer surface of the lower portion 12 of the container body is adapted to come into contact with the support surface on which the storage container 1 is placed, and serves as an anti-slip function when the storage container 1 is placed on the support surface.

[0048] (Engaging protrusion) The engagement protrusion 123 is a protrusion that protrudes forward and is formed integrally with the lower container body 12 at approximately the center of the upper end of the front surface of the lower container body 12, as shown in Figures 4 and 6, for example, and engages with two locking portions 1181 when the storage space S is sealed. The engagement protrusion 123 is formed so that its length in the left-right direction is longer than the distance between the two locking portions 1181. Since this engagement projection 123 is a part of the container body lower part 12, it is made of polypropylene containing a random copolymer and a block copolymer. As described above, the engaging protrusion 123 and the locking portion 1181, both of which are formed from polypropylene containing random copolymers and block copolymers, are designed to engage with each other appropriately, so that the upper portion 11 of the container body can be fitted appropriately into the lower portion 12 of the container body to shield the storage space S.

[0049] (Opening and closing lid) The opening / closing lid 2 is, for example, as shown in Figs. 1 to 5, a member rotatably attached to the rear of the recess 112 of the upper portion 11 of the container body, and has a generally flattened, curved rectangular shape. The opening / closing cover 2 has an opening / closing cover side locking portion 21 on the front side when in the closed state, and has an opening / closing cover side sealing ring portion 22 on the underside of the opening / closing cover 2, and an insertion portion 23 into which a biasing member 114 is inserted. In addition, the opening / closing lid 2 is formed so that its shape in a planar view when closed is approximately the same as the shape of the recess 112 in the upper part 11 of the container body in a planar view, excluding the part where the button part 3 is provided, so that it can be fitted into the recess 112 when the lid is closed and is formed so as to be flush with the top surface part 111.

[0050] (Cover material) The opening / closing lid 2 is made of the same hard material as that used for the container body 10 .

[0051] (Lid locking part) The opening / closing cover side locking portion 21 is a claw-shaped portion that protrudes forward of the opening / closing cover 2, as shown in Figures 2, 3 and 5, for example. The opening / closing cover 2 is locked in the closed state by engaging with a button side locking portion 313 (described later) formed on the button portion 3. When the user presses the button portion 3, the opening / closing cover side locking portion 21 and the button side locking portion 313 are disengaged, and the opening / closing cover 2 is opened by the biasing force generated by the biasing member 114. The open / close cover 2 can be closed by rotating the open / close cover 2 in the opposite direction to when it is open and engaging the open / close cover side locking portion 21 with the button side locking portion 313 (described later).

[0052] The shape of the opening / closing cover side locking portion 21 may be any shape as long as it engages with the button side locking portion 313 to lock the opening / closing cover 2 in the closed state, and when the user presses the button portion 3, the engagement between the opening / closing cover side locking portion 21 and the button side locking portion 313 is released, and is not limited to the claw shape as shown in Figures 2, 3 and 5.

[0053] (Opening / closing lid side sealing ring part) The opening / closing lid side sealing ring portion 22 has a roughly rectangular ring shape, for example, as shown in Figures 2 and 5, and protrudes downward when the opening / closing lid 2 is closed. As shown in Figure 8, the edge of the opening / closing lid side sealing ring portion 22 is formed in the approximate center of the underside of the opening / closing lid 2 so as to contact the outer periphery of the removal portion 113 formed in the upper part 11 of the container body.

[0054] (Insertion part) The insertion portion 23 is, for example, as shown in FIG. 2 and FIG. 5, for inserting and fixing a biasing member 114 into the rear end portion of the opening / closing cover 2.

[0055] (Button section) As shown in FIG. 8, the button portion 3 has, for example, a button mounting portion 32 provided on the container body 10 (container body upper portion 11), a button 31 attached to the button mounting portion 32, and a button elastic member 33 interposed between the button 31 and the button mounting portion 32 so as to be elastically deformable. The button 31 and the button attachment portion 32 are formed from the same hard material as that used in the container body 10, and the button elastic member 33 is formed from the same elastic material as the removal portion 113, the biasing member 114, etc. When the user presses the button 31 of the button section 3, the lock of the opening / closing cover 2 by the button 31 is released, and the opening / closing cover 2 is pushed up by the biasing force of the biasing member 114 and opened.

[0056] (Button mounting part) The button attachment portion 32 is a portion for attaching the button 31, which is provided in a portion in front of the recess 112 of the upper portion 11 of the container body where the button portion 3 is provided, as shown in FIG. On both the left and right sides of the button attachment portion 32, shaft holes (not shown) are formed into which button shafts 312 (shaft portions 312b) of the buttons 31, which will be described later, are inserted. The button mounting portion 32 is provided with a contact surface 32a against which a tip of a button elastic member 33 (described later) abuts. The contact surface 32a faces the bottom surface of the button 31 attached to the button mounting portion 32.

[0057] (button) The button 31, for example as shown in FIG. 8, is a member formed independently of the button mounting portion 32 and includes an upper surface 311 that is pressed by the user, button shafts 312, 312 provided on both the left and right sides of the button 31, a button side locking portion 313 that engages with the opening / closing cover side locking portion 21 of the opening / closing cover 2 to lock the opening / closing cover 2 in the closed state, and elastic member support portions 314, 314 that support the button elastic member 33 on the underside of the button 31.

[0058] (Top part) As shown in Figures 1 and 8, for example, the upper surface portion 311 is formed so that the rear base end portion 311b side is straight and the front tip portion 311a side is arc-shaped when viewed in a plane, and the tip portion 311a is formed so as to protrude forward from the recess 112. A gap b is formed between the tip 311a of the top surface portion 311 and the upper portion 11 of the container body. The size of the upper surface portion 311 is determined according to the size of the portion of the recess 112 that is not covered by the opening / closing lid 2, but it is desirable that the longest part in the front-to-back direction has a length of 10 mm to 30 mm, and the longest part in the left-to-right direction has a length of 30 mm to 100 mm. The tip portion 311a of the button 31 may be formed to have a straight line shape.

[0059] Moreover, the upper surface portion 311 is formed so as to be inclined downward from the base end portion 311b side toward the tip end portion 311a side. The inclination angle of this upper surface portion 311 is preferably 6 degrees to 10 degrees. The inclination angle of upper surface portion 311 may be different between base end portion 311b and tip end portion 311a. For example, the inclination angle on base end portion 311b side may be 6 degrees to 8 degrees, and the inclination angle on tip end portion 311a side may be 8 degrees to 10 degrees, forming a two-stage inclination.

[0060] (Button shaft) As shown in FIG. 8, the button shaft 312 has a base portion 312a provided on the underside of the upper surface portion 311 and a shaft portion 312b extending outward from the base portion 312a, and is provided in pair on the left and right sides of the button 31. The pair of button shafts 312 are provided symmetrically, and each shaft portion 312b extends in a direction away from each other along the same axis. The shaft portion 312b of this button shaft 312 is inserted into a shaft hole (not shown) of the button mounting portion 32, and the button 31 is axially supported on the button mounting portion 32 so as to be rotatable.

[0061] (Button side locking part) The button side locking portion 313 is a recess formed behind the button 31, as shown in FIG. 8, for example, and is configured so that the opening / closing lid side locking portion 21 formed on the opening / closing lid 2 engages with the button side locking portion 313 to lock the opening / closing lid 2 in the closed state. Furthermore, when the user presses the button portion 3, the opening / closing cover side locking portion 21 disengages, and the opening / closing cover 2 is pushed up and opened by the biasing force generated by the biasing member 114. The shape of the button side locking portion 313 may be any shape that locks the opening / closing lid 2 in the closed state and disengages the button side locking portion 313 from the opening / closing lid side locking portion 21 when the user presses the button portion 3, and is not limited to a recess as shown in the figure and may be, for example, a claw portion with which the opening / closing lid side locking portion 21 engages.

[0062] (Elastic member support part) As shown in FIG. 8, for example, the elastic member support portions 314 are plate-like protruding pieces provided so as to protrude downward from the lower surface of the upper surface portion 311, and a pair of elastic member support portions 314 are provided at a distance from each other in the front and rear. The button elastic member 33 is disposed between the pair of elastic member support portions 314, 314. Here, the front and rear elastic member support parts 314 are formed to be different sizes, with the front elastic member support part 314 being smaller than the rear elastic member support part 314, but the front elastic member support part 314 may be formed to be larger than the rear elastic member support part 314, or may be formed to be the same size.

[0063] (Button elastic material) The button elastic member 33 is a plate-like member made of an elastic material and capable of elastic deformation. The button elastic member 33 is disposed on the underside of the button 31 in such a manner that the upper end side of the button elastic member 33 is supported by being sandwiched between a pair of elastic member supporting portions 314,314. The button elastic member 33 here has a shape that is elongated in the left-right direction relative to the button 31, and the button elastic member 33 arranged on the button 31 extends along the front edge of the tip portion 311a side of the button 31. The button elastic member 33 is preferably arranged over approximately the entire width of the button 31. When the button 31, which supports the button elastic member 33 by a pair of elastic member support portions 314, 314, is attached to the button mounting portion 32, the tip portion, which is the free end of the button elastic member 33, is abutted against the abutment surface portion 32a of the button mounting portion 32. In particular, since the upper end side of the button elastic member 33 is supported by a pair of elastic member support portions 314, 314, the tip portion of the lower end side of the button elastic member 33 abuts against the abutment surface portion 32a of the button mounting portion 32 in a stable posture.

[0064] (Button operation) As described above, with the button locking portion 313 of the button 31 engaged with the cover locking portion 21 of the cover 2, the button 31 locks the cover 2 in the closed position. When the button 31 that engages the opening / closing lid 2 in the closed state is pressed, the button elastic member 33 elastically deforms, causing the button 31 to rotate, and the position of the button 31 is changed so that the tip portion 311a of the button 31 lowers, whereby the engagement of the opening / closing lid 2 by the button 31 is released and the opening / closing lid 2 is opened, thereby entering the open lid state. When pressure on the button 31 is released, the tip portion 311a of the button 31 rises due to the restoring force of the button elastic member 33, and the button 31 returns to its original position.

[0065] [Effects of the embodiment] The sanitary tissue paper storage container 1 of this embodiment comprises a container body 10 having a storage space S inside in which sanitary tissue paper P is stored, and the container body 10 comprises an upper container body part 11 that forms the upper part of the container body 10, a lower container body part 12 that forms the lower part of the container body 10, and a connection part 13 that connects the rear surface of the upper container body part 11 to the rear surface of the lower container body part 12, and the connection part 13 is formed to be foldable, and is configured so that the storage space S of the lower container body part 12 is exposed or covered by rotating the upper container body part 11 around the fold line of the connection part 13 as a fulcrum, and at least the connection part 13 is formed using polypropylene containing a random copolymer and a block copolymer.

[0066] In the sanitary tissue paper storage container 1 of this embodiment, the connection portion 13 connecting the upper container body 11 and the lower container body 12 in the container body 10 is formed to be foldable, and the connection portion 13 is formed using polypropylene containing random copolymers and block copolymers, making it easier to rotate the upper container body 11 relative to the lower container body 12 using the easily foldable connection portion 13 as a fulcrum, and making it easier to expose or cover the storage space S of the lower container body 12, making it easier to refill the sanitary tissue paper P.

[0067] In addition, in the sanitary tissue paper storage container 1 of this embodiment, the upper container body 11 and the lower container body 12 of the container body 10 are both formed using polypropylene containing random copolymers and block copolymers, so that the engaging portion 1181 of the upper container body 11 can be suitably engaged with the engaging protrusion 123 of the lower container body 12, and the upper container body 11 can be suitably fitted into the lower container body 12 to shield the storage space S.

[0068] In addition, in the sanitary tissue paper storage container 1 of this embodiment, the upper container body 11 and the lower container body 12 of the container body 10 are both formed using polypropylene containing random copolymers and block copolymers, so that the inner edge 117 of the upper container body 11 can easily slide between the outer peripheral wall portion 1211 and the inner peripheral wall portion 1212 of the groove portion 121 of the lower container body 12, and the upper container body 11 and the lower container body 12 are in close contact with each other, thereby maintaining the airtightness of the storage space S in an optimal manner. EXAMPLES

[0069] Next, the results of evaluation of the examples of the present invention will be described. The present invention will be specifically described below with reference to examples, but the present invention is not limited to these.

[0070] There are three types of polypropylene: random copolymer, block copolymer, and homocopolymer, each with different properties. The inventors have evaluated random copolymers, block copolymers, and homocopolymers of polypropylene on the following four-point scale with respect to hinge property (durability until damage occurs when repeatedly bent), fitability (ease of fitting components together), matte feel, and hardness. S: Particularly excellent A:Excellent B: Average (slightly inferior) C: Inferior The evaluation is shown in Table 1.

[0071] [Table 1]

[0072] As shown in Table 1, the random copolymer has a good balance of hinge properties and interlocking properties, but has a shiny appearance and is inferior in matte feel. Block copolymers are excellent in hinge properties and matte feel, but are significantly lacking in hardness. Homocopolymers are significantly inferior in hinge and interlocking properties.

[0073] Based on such evaluation of the properties of each copolymer, container bodies 10 (samples 1 to 7) each having an upper container body 11, a lower container body 12, and a connection part 13 integrally molded therein were molded using polypropylene resin having the compounding ratio shown in Table 2 below, and the ease of opening and closing the upper container body 11 relative to the lower container body 12 was compared. The compounding ratio of each copolymer shown in Table 2 is a compounding ratio by mass. The inventors of the present invention have investigated a formulation that is mainly composed of a random copolymer, which has good hinge and interlocking properties, and to which a block copolymer is added to produce a matte finish. Based on the recognition that the block copolymer does not have sufficient hardness, the amount of the block copolymer was set to 25% or less. Moreover, since homocopolymers have significantly poor hinge properties and interlocking properties, addition of a homocopolymer to a random copolymer to achieve a matte finish was not considered. In addition, with respect to each of the polypropylene resin copolymers shown in Table 2, product numbers PM20V, PM970, and PM900C are manufactured by SunAllomer Co., Ltd., and product number J-226 is manufactured by Prime Polymer Co., Ltd.

[0074] [Table 2]

[0075] The ease of opening and closing of the upper container body 11 relative to the lower container body 12 in Samples 1 to 7 (container body 10) was evaluated by a sensory test. The sensory test is A: It can be opened and closed without any problems. B: There are some issues, but it can be opened and closed. C: Difficult to open and close The evaluation was conducted on a three-point scale. Each sample was scored by adding up 3 points for an A rating, 1 point for a B rating, and 0 point for a C rating. Here, "ease of opening and closing the upper part 11 of the container body relative to the lower part 12 of the container body" refers to the subject's overall evaluation of the ease with which the upper part 11 of the container body can rotate relative to the lower part 12 of the container body, the ease with which the upper part 11 of the container body can fit relative to the lower part 12 of the container body, and the ease with which the upper part 11 of the container body can fit tightly relative to the lower part 12 of the container body. First, a sensory test was conducted by 17 subjects on unused samples. The evaluation results are shown in Table 3.

[0076] [Table 3]

[0077] As shown in Table 3, Samples 3 and 5 had low scores and their evaluations were significantly lower than those of the other samples. Samples 3 and 5 were made using polypropylene blended with block copolymer and homocopolymer. Each sample except for Sample 3 and Sample 5 was repeatedly opened and closed, and the ease of opening and closing of each sample after 100 openings and closings was evaluated by a similar sensory test and given a score. Sensory tests were conducted on the samples after they had been opened and closed 100 times by 14 subjects. The evaluation results are shown in Table 4.

[0078] [Table 4]

[0079] As shown in Table 4, the sensory test score of Sample 4 was low, indicating that it was inferior to the other samples. In particular, Sample 4 showed a larger decrease in the sensory test score shown in Table 3 compared to the other samples. Sample 4 was formed using polypropylene in which a block copolymer and a homocopolymer were blended. In other words, it was found that the polypropylene resin blend of sample 4 made each part of container body 10 prone to deterioration when container body upper part 11 was repeatedly opened and closed relative to container body lower part 12, and that sample 4 was inferior in durability compared to the other samples (samples 1, 2, 6, and 7).

[0080] Thus, from the results of the above-mentioned sensory tests (sensory tests on unused samples and sensory tests on samples that had been opened and closed 100 times), it was found that a combination ratio of samples 1, 2, 6, and 7 results in a container body 10 with excellent opening and closing properties in the upper container body 11 relative to the lower container body 12. The results of the sensory test showed that the polypropylene resin constituting the container body 10 (upper container body 11, lower container body 12, and connecting portion 13) of the sanitary tissue paper storage container 1 should have a mass ratio of random copolymer to block copolymer of 99:1 to 3:1. Based on this knowledge, it was decided to use polypropylene for the container body 10 (container body upper part 11, container body lower part 12, connecting part 13) of the sanitary tissue paper storage container 1, in which the blending ratio of random copolymer to block copolymer in the polypropylene is 99:1 to 3:1 by mass.

[0081] The inventors have confirmed that even if the polypropylene constituting the container body 10 (container body upper part 11, container body lower part 12, connecting part 13) is 100% random copolymer, it has performance equivalent to that of samples 1 and 2 above. However, it was found that a container body 10 with excellent opening and closing properties can be obtained by blending a random copolymer with a block copolymer. Therefore, the polypropylene constituting the container body 10 has a blending ratio of random copolymer to block copolymer in the polypropylene of 99:1 to 3:1 by mass.

[0082] As described above, the container body 10 (upper container body 11, lower container body 12, connecting portion 13) in the sanitary tissue paper storage container 1 of this embodiment is formed using polypropylene containing random copolymers and block copolymers, and in particular, since the blending ratio of random copolymers to block copolymers in the polypropylene is 99:1 to 3:1 by mass, the upper container body 11 can be easily rotated relative to the lower container body 12 using the connecting portion 13 as a fulcrum, making it easy to open and close. In other words, the sanitary thin paper storage container 1 of this embodiment has a container body 10 that is easy to open and close, so that the sanitary thin paper P can be easily refilled.

[0083] The application of the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0084] 1. Sanitary tissue storage container 10 Container body 11 Container body upper part 113 Removal part 113a Ejection hole 114 Pressing member 117 Inner edge 1181 Locking part 12 Lower part of container body 12a bottom 121 Groove section 1211 Outer wall 1212 Inner peripheral wall 122 Anti-slip part 123 Engagement protrusion 13 Connection 2 Opening and closing lid 3 Button section 31 Buttons 33 Button elastic member P Sanitary tissue paper S Storage space

Claims

1. A sanitary tissue paper storage container having a container body having a storage space for storing sanitary tissue paper therein, The container body includes a container body upper portion forming an upper portion of the container body, a container body lower portion forming a lower portion of the container body, and a connecting portion connecting a rear surface of the container body upper portion and a rear surface of the container body lower portion, The connection portion is formed to be foldable, and is configured to expose or shield the storage space in the lower portion of the container body by rotating the upper portion of the container body about a folding line of the connection portion as a fulcrum, A sanitary tissue paper storage container, characterized in that at least the connecting portion is formed using polypropylene, and the polypropylene contains a random copolymer and a block copolymer.

2. The sanitary tissue storage container according to claim 1, characterized in that the upper and lower portions of the container body are formed using polypropylene, and the polypropylene contains a random copolymer and a block copolymer.

3. A locking portion is provided on the front surface of the upper portion of the container body, An engagement protrusion is provided on the front surface of the lower portion of the container body, The sanitary tissue paper storage container as described in claim 2, characterized in that the locking portion is configured to engage with the engaging protrusion when the upper portion of the container body is rotated to cover the storage space in the lower portion of the container body.

4. The container body upper portion has a lower end provided with an annular inner edge portion, An annular groove is provided at the upper end of the lower portion of the container body, The sanitary tissue paper storage container described in claim 2, characterized in that the inner edge portion is configured to enter the groove portion when the upper part of the container body is rotated to cover the storage space in the lower part of the container body.

5. A locking portion is provided on the front surface of the upper portion of the container body, An engagement protrusion is provided on the front surface of the lower portion of the container body, The sanitary tissue paper storage container as described in claim 4, characterized in that the locking portion is configured to engage with the engaging protrusion when the upper portion of the container body is rotated to cover the storage space in the lower portion of the container body.

6. A sanitary tissue storage container according to any one of claims 1 to 5, characterized in that the blending ratio of the random copolymer to the block copolymer in the polypropylene is 99:1 to 3:1.

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