Container cap

Abstract

To provide a cap for aerosol which can suppress increase in production cost, can maintain a sufficient fitting force of a cap even after being attached / detached repeatedly, and cap can be removed without applying an excessive force, with a simple structure.SOLUTION: A container cap 100 includes: a fitting part 112 which is fitted in a part to be fitted; and a cylindrical part 111 extending upward from the fitting part 112. The fitting part and the cylindrical part are made of paper, and the cylindrical part 111 is formed in a cylindrical shape with the upper side and the lower side in the axial direction opened.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a paper cap for a container, which has a fitting portion that fits into the annular mouth of a container, and a cylindrical portion that extends upward from the fitting portion. [Background technology]

[0002] Various types of container caps have been proposed in the past, and plastic dispensing container caps are common, but other types such as paper caps, such as the container cap (overcap 14) used on the container described in Patent Document 1, are also known.

[0003] The container cap (overcap 14) used for the container (bottle body 1) known in Patent Document 1 uses a paper tube as a base material formed by spirally winding and joining, and has a tubular portion (15) and a lid member (lid plate 16), with an upper fold-back portion (18) provided at the top of the tubular portion (15) and a fitting portion (lower fold-back portion 19) provided at the bottom of the tubular portion (15). The cover member (cover plate 16) is fitted inside the tube portion (15) so as to abut against the lower part of the upper folded portion (18). This container cap (overcap 14) has a fitting portion (lower folded portion 19) that is an annular protrusion, and is fixed to the container (bottle body 1) by fitting into the large diameter portion of the discharge outlet (4) of the container (bottle body 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2021-160774 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, there is still room for improvement in the container cap known from Patent Document 1.

[0006] In other words, the container cap known from Patent Document 1 uses a paper tube as a base material, has folded portions at the top and bottom, and has a lid member inserted into it, which means that there are many steps required to manufacture the container cap, and there is a risk of increased production costs. In addition, since the annular protrusion-shaped fitting portion fits into the large diameter portion of the bottle body's discharge outlet and the lid member is fitted inside the cylindrical portion so that it abuts the lower part of the upper folded portion, the space inside the container cap is sealed, making it difficult to remove the container cap from the container, which could increase the burden on the user, and there is a risk that using excessive force to remove the container cap could damage the container cap, accidentally touch the button and result in incorrect spraying, or that the container could suddenly come off from the hand.

[0007] In addition, since the fitting portion is formed into an annular protrusion and an annular space is formed as a gap between the inner surface of the cylindrical portion, if a user performs an action that locally presses the fitting portion, such as by placing a container cap on the bottle body from an oblique angle, there is a risk that part of the fitting portion will crush the annular space and become dented, making it impossible to maintain the desired fitting force against the bottle body. Furthermore, each time the container cap is repeatedly attached and detached, the fitting portion overcomes the protrusion at the top of the annular recess, which may result in significant distortion of the shape of the lower folded portion. Furthermore, in order to form the ends of the paper tube, such as the upper fold portion and the lower fold portion, into a curled shape, the paper tube needs to be formed to a specified thickness, which may overly limit the freedom of the paper tube specifications.

[0008] The present invention aims to solve these problems and provide a container cap that has a simple configuration, can suppress increases in production costs, maintains sufficient fitting force even when repeatedly attached and detached, and can be attached and removed without applying excessive force. [Means for solving the problem]

[0009] The container cap of the present invention is a container cap having an engaging portion that engages with a mating portion of a container, and a cylindrical tubular portion extending upward from the engaging portion, wherein the engaging portion and the tubular portion are made of paper, and the tubular portion is formed in a cylindrical shape with open top and bottom axial directions, thereby solving the above-mentioned problem. Effect of the Invention

[0010] According to the container cap of the invention of claim 1, since it has a fitting portion and a cylindrical tube portion extending upward from the fitting portion, it can be easily produced with a small number of steps, for example, by simply cutting a spirally wound paper tube to the desired length, thereby suppressing increases in production costs. In addition, since the cylindrical portion is open on the top and bottom in the axial direction, even if the fitting portion is fitted tightly with the fitted portion of the container around the entire circumference, the inside of the container cap is not sealed and no air pressure difference is created between the inside and outside of the container cap, so the container cap can be easily removed from the fitted portion without applying excessive force. Furthermore, for example, if the container has an operation button on the top that can be pressed, the operation button can be pressed from above the cylindrical portion while the container cap is engaged with the engaging portion. Therefore, for example, if the container contains an air freshener, the operation button can be operated to apply the contents to the inner surface of the container cap, and the contents can be gradually diffused from the inner surface of the container cap. In addition, since the container cap is made of paper, the evaporation time of the contents can be slowed down by applying the contents to the inner peripheral surface of the container cap and allowing it to soak in, and the diffusion effect of the contents can be maintained for a long period of time. In addition, compared to spraying the contents directly into a space such as a living room, it is possible to prevent the contents that do not volatilize within the space from adhering to the floor or the like as droplets.

[0011] According to the configuration described in claim 2, the container cap has a lid member that can be opened, closed, or unsealed at the axially upper part of the cylindrical portion. Therefore, for example, if the top of the container has an operation button that can be pressed, it is possible to prevent the operation button from being accidentally touched from the top side of the cylindrical portion by a falling object, etc. In addition, the user can adjust the diffusion of the contents applied to the inner circumferential surface of the cylindrical portion at will by opening and closing or unsealing the lid member. According to the configuration described in claim 3, the lid member is provided with a communication hole that connects from the axial upper side of the cylindrical portion to the inner peripheral side of the cylindrical portion. Therefore, even when the lid member is attached to the cylindrical portion, the communication hole provides communication between the inside and outside of the container cap, preventing airtightness, and the container cap can be easily removed from the fitting portion without applying excessive force. Furthermore, the contents applied to the inner peripheral surface of the cylindrical portion can be gradually dispersed while the lid member is still attached to the cylindrical portion.

[0012] According to the configuration described in claim 4, a liquid holding portion capable of temporarily holding liquid is provided on the inner surface of the cylindrical portion, so that the contents inside the container applied to the inner surface of the container cap can be quickly absorbed by the liquid holding portion. According to the configuration of claim 5, since the liquid holding portion is formed in a groove shape, the contents in the container that are applied to the inner peripheral surface of the container cap can be held in the groove of the liquid holding portion more quickly. Furthermore, if the liquid holding portion is formed into a groove shape extending in the vertical direction of the cylindrical portion, the contents inside the container applied to the inner surface of the container cap will quickly move upwards in the container cap, making it even easier for the contents to spread into the surrounding space.

[0013] According to the configuration described in claim 6, the inner and outer diameters of the fitting portion are the same as the inner and outer diameters of the tube portion, so that processes such as forming the ends of the paper tube into a curled shape, such as the upper folded portion and the lower folded portion, can be omitted, allowing for greater freedom in specifications such as the thickness of the paper tube while suppressing increases in production costs. According to the configuration described in claim 7, the fitting portion is configured to be able to fit into a mounting cup that is adopted with standard dimensions common to many aerosol products, so that the container cap can be used as a cap for various aerosol products without changing the specifications of the container cap, making it easier to manage inventory of container caps for aerosol products.

[0014] According to the configuration described in claim 8, the fitting portion is configured to be able to fit into the outer peripheral surface of the mounting cup, so that the aerosol cap can be attached while a large aerosol button that fits within the outermost diameter of the mounting cup is attached to the stem. According to the configuration described in claim 9, the inner diameter of the fitting portion is formed to be 0.0 to 1.0 mm smaller than the outer diameter of the mounting cup, so that the aerosol cap can be securely fitted into the mounting cup and sufficient fitting force can be maintained to make it easy to attach and remove the aerosol cap without the user having to apply excessive force.

[0015] According to the configuration described in claim 10, the fitting portion is configured to be able to fit into the inner surface of the mounting cup. Therefore, when the contents are applied to the inner surface of the tubular portion, even if the contents that do not soak into the tubular portion temporarily accumulate in the recess of the mounting cup, the inner surface of the fitting portion that enters the recess of the mounting cup comes into contact with the contents and gradually absorbs them, so that even if the aerosol product comes into contact with it and is knocked over, the contents accumulated in the recess of the mounting cup can be prevented from dripping out. Furthermore, when the aerosol button is attached to the stem immediately before use, the stem can be protected by surrounding it with an aerosol cap. According to the configuration described in claim 11, the outer diameter of the fitting portion is formed to be 0.0 to 1.0 mm larger than the inner diameter of the mounting cup, so that the aerosol cap can be securely fitted into the mounting cup and sufficient fitting force can be maintained to make it easy to attach and remove the aerosol cap without the user having to apply excessive force. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view of an aerosol product P1 equipped with a container cap 100 according to one embodiment of the present invention. [Diagram 2] 1 is a cross-sectional view of a container cap 100 according to one embodiment of the present invention. [Diagram 3]1 is a cross-sectional view of an aerosol product P1 equipped with a container cap 100 according to one embodiment of the present invention. [Figure 4] 1 is a cross-sectional view showing an aerosol product P with a container cap 100 according to one embodiment of the present invention attached thereto with a lid member 120 removed. [Diagram 5] 1 is a cross-sectional view showing a state in which an aerosol button B of an aerosol product P1 equipped with a container cap 100 according to one embodiment of the present invention is activated. [Figure 6] 1 is a cross-sectional view of an aerosol product P2 equipped with a container cap 200 according to one embodiment of the present invention. [Figure 7] 1 is a cross-sectional view showing an aerosol product P2 equipped with a container cap 200 according to one embodiment of the present invention, with the aerosol button B activated. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, a container cap 100 according to one embodiment of the present invention will be described with reference to the drawings.

[0018] As shown in Figures 1 to 3, a container cap 100 according to one embodiment of the present invention has a paper main body 110 and a lid member 120 that covers the main body, and the main body 110 is provided with a cylindrical tube portion 111 and an engagement portion 112 that engages with the outer peripheral surface (engaged portion) of a mounting cup M of an aerosol container C. Further, on the inner peripheral surface of the tube portion 111, a groove-shaped liquid holding portion 113 extending in the vertical direction is formed.

[0019] The lid member 120 is provided with a top wall portion 121 that covers the upper part of the main body portion 110, an insertion portion 122 that is configured to be insertable into the tube portion 111, and a communication hole 123 that passes through the lid member 120 in the vertical direction. The material of the cover member 120 is not particularly limited, and may be made of, for example, single-layer or multi-layer paper, a composite material using paper and resin, or the like, or it may be made of resin only.

[0020] Next, using Figures 4 and 5, we will explain the mounting state of the container cap 100 of an aerosol product P1 equipped with a container cap 100 of one embodiment of the present invention in a mounting cup M, and the spraying of the contents when the container cap 100 is attached. The aerosol container C is equipped with a mounting cup M, and an aerosol button B is fitted onto a stem S protruding upward from the center of the mounting cup M.

[0021] First, the fitting portion 112 is fitted onto the outer periphery of the mounting cup M, as shown in FIG. In this case, if the inner diameter of the fitting portion 112 is formed to be 0.0 to 1.0 mm smaller than the outer diameter of the outer peripheral surface of the mounting cup M, the container cap 100 can be securely fitted with the mounting cup M, and sufficient fitting force can be maintained so that the container cap 100 can be easily attached and removed without the user having to apply excessive force. A sufficient fitting force can be indicated by the rotation torque between the container cap 100 and the mounting cup M, and is preferably within the range of 20 to 200 N·cm.

[0022] In addition, since the lid member 120 has a communication hole 123, even when the container cap 100 is attached while the fitting portion 112 is in contact with the entire outer peripheral surface of the mounting cup M without any gaps, the air inside the container cap 100 passes through the communication hole 123 and is discharged to the outside. This prevents the internal pressure in the space separated by the container cap 100 and the mounting cup M from increasing, prevents the lid member 120 from accidentally coming off the main body portion 110, and suppresses the generation of resistance when the container cap 100 is attached. Furthermore, when removing the container cap 100, the internal pressure in the space separated by the container cap 100 and the mounting cup M does not decrease, and the container cap 100 can be easily detached from the mounting cup M.

[0023] Next, spraying of the contents by operating the aerosol button B in a state where the container cap 100 is attached to the mounting cup M will be described. As shown in FIG. 5, by removing the cover member 120 from the main body 110, the aerosol button B can be pressed from above the main body 110. When the aerosol button B is pressed in this state, the stem S is pushed down, causing the contents to flow from inside the aerosol container C through the stem into the aerosol button B, and then be sprayed from the nozzle and applied to the inner surface of the cylindrical portion 111.

[0024] At this time, since the container cap 100 is made of paper, a part of the contents soaks into the cylindrical portion 111 and is temporarily retained therein. This allows the evaporation time of the contents to be slowed down, and the diffusion effect of the contents can be maintained for a long period of time. In addition, compared to spraying the contents directly into a space such as a living room, it is possible to prevent the contents that do not volatilize within the space from adhering to the floor or the like as droplets.

[0025] Furthermore, since a liquid holding portion 113 extending in the vertical direction is provided on the inner surface of the tubular portion 111, the contents applied to the inner surface of the tubular portion 111 quickly move upwards of the container cap 100, making it even easier for the contents to spread into the surrounding space. Furthermore, since the lid member 120 is provided with communication holes 123, the amount of the contents diffusing into the space can be adjusted by attaching and detaching the lid member 120.

[0026] Furthermore, in the production process, there is a step in which the aerosol button B is pressed and attached to the stem S using a button attaching machine. If the container cap 100 is attached to the mounting cup M before the aerosol button B is attached to the stem S, the contents that are slightly sprayed when the aerosol button B is attached can be absorbed by the cylindrical portion 111, so that the surrounding area of ​​the production line and the aerosol container C will not be contaminated by the contents. Furthermore, by using the container cap 100 coated with the contents sprayed when the aerosol button B is attached, for example, in the case of contents such as air freshener, the smell, etc. can be checked at the store without additional spraying.

[0027] Next, an aerosol product P2 equipped with a container cap 200 according to another embodiment of the present invention will be described with reference to FIGS. Note that some of the explanations of the parts that overlap with the container cap 100 will be omitted.

[0028] The container cap 200 has a main body portion 210 and a lid member 220 that covers the main body portion 210, and the main body portion 210 is provided with a cylindrical tube portion 211 and an engaging portion 212 that engages with the inner surface (engaged portion) of the recess of the mounting cup M of the aerosol container C. First, as shown in FIG. 6, the fitting portion 212 is fitted into the inner circumferential surface of the recess of the mounting cup M. In this case, if the outer diameter of the fitting portion 212 is formed to be 0.0 to 1.0 mm larger than the inner diameter of the inner surface of the mounting cup M, the container cap 200 can be securely fitted with the mounting cup M, and sufficient fitting force can be maintained so that the container cap 200 can be easily attached and removed without the user having to apply excessive force.

[0029] Next, spraying of the contents by operating the aerosol button B in a state where the container cap 200 is attached to the mounting cup M will be described. As shown in FIG. 7, by removing the cover member 220 from the main body part 210, the aerosol button B can be pressed from above the main body part 210. When the aerosol button B is pressed in this state, the stem S is pushed down, causing the contents to flow from inside the aerosol container C through the stem S into the aerosol button B, and then be sprayed from the nozzle and applied to the inner surface of the tubular portion 211.

[0030] At this time, since the container cap 200 is made of paper, a part of the contents soaks into the tube portion 211 and is temporarily retained therein. This allows the evaporation time of the contents to be slowed down, and the diffusion effect of the contents can be maintained for a long period of time. In addition, compared to spraying the contents directly into a space such as a living room, it is possible to prevent the contents that do not volatilize within the space from adhering to the floor or the like as droplets. Furthermore, since the fitting portion 212 penetrates to the bottom of the recess of the mounting cup M, the fitting portion 212 can gradually absorb the contents that cannot be absorbed immediately after the contents are sprayed and that temporarily accumulate in the recess of the mounting cup M. For example, even if the aerosol product is accidentally touched and knocked over, the contents accumulated in the recess of the mounting cup M can be prevented from dripping out. The aerosol cap 200 may also be used as a cover for protecting the periphery of the stem S on the production line.

[0031] As described above, the container cap of the present invention has a simple structure, can maintain sufficient fitting force even when repeatedly attached and detached, and can be attached and detached from the mounting cup without applying excessive force. Furthermore, the container cap of the present invention is not limited to being fitted only into the mounting cup of an aerosol container, but can also be fitted and attached to a fitting portion provided on a resin container other than an aerosol container, such as a pump container, and can maintain sufficient strength even when fitted into a fitting portion provided on a resin container. In addition, the container cap of the present invention can be produced easily with a small number of steps by, for example, simply cutting a paper tube made of single-layer or multi-layer paper wound in a spiral shape to the desired length, thereby suppressing increases in production costs. Furthermore, since the container cap of the present invention is made of paper, it can reduce the environmental impact compared to plastic caps.

[0032] In particular, in order to maintain a sufficient fitting force and to enable the container cap of the present invention to be attached and detached without applying excessive force, Basis weight: 200~600g / m 2 Number of layers: 2 to 10 Thickness: 1.0~3.0mm It is preferable that the tube is made of a paper tube. In addition, although the outermost layer of the paper tube used in the container cap in one embodiment of the present invention is made of kraft paper, other materials of paper may be used for the outermost layer without being limited to kraft paper. For example, by using laminated paper or the like for the outermost layer, the appearance and strength of the container cap can be improved. Furthermore, the adhesive used for the cardboard tube is a vinyl acetate-based or modified vinyl acetate-based adhesive, but the material and composition of the adhesive are not limited to these, and any known adhesive can be used.

[0033] Although the embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various design modifications can be made without departing from the present invention described in the claims.

[0034] In the above-described embodiment, the aerosol cap is described as being composed of a main body portion and a lid member, but the configuration of the aerosol cap is not limited to this, and for example, it may be composed of only the main body portion without a lid member. In addition, in the above-described embodiment, it has been described that a groove-shaped liquid holding portion extending in the vertical direction is provided on the inner surface of the tubular portion, but the configuration of the tubular portion is not limited to this, and for example, there may be no liquid holding portion, or the liquid holding portion may be formed by providing a gap at the joint of the spirally wound paper.

[0035] In addition, in the above-described embodiment, the container cap is described as being produced from a paper tube made by spirally winding single-layer or multi-layer paper, but the material for the container cap is not limited to this, and for example, a paper tube made by spirally winding a composite material using paper and resin or the like may be used, or a single-layer or multi-layer paper may be wound in parallel to form a tube, or a molded product such as a pulp mold may be used. In addition, in the above-described embodiment, the contents in the aerosol container are described as being sprayed in the form of a mist, but the form of spray is not limited to this and may be, for example, foam, cream, gel, etc.

[0036] In addition, in the above-described embodiment, the lid member is described as having a communication hole, but the configuration of the aerosol cap is not limited to this, and for example, there may be no communication hole, or a communication hole may be provided in the cylindrical portion to connect the inside and outside of the cylindrical portion. In addition, in the above-described embodiment, the fitting portion of the container cap is described as fitting into the mounting cup, but the configuration of the container cap is not limited to this, and for example, the fitting portion may be configured to fit into the outer peripheral surface of the body or shoulder of the aerosol container. [Explanation of symbols]

[0037] 100, 200... Container caps 110, 210... Main body 111, 211... Cylindrical part 112, 212 ... fitting part 113, 213...Liquid holding part B: Aerosol button C: Aerosol container M: Mounting cup (fitting part) S··· Stem P1, P2: Aerosol products

Claims

1. A container cap having a fitting portion that fits into a fitted portion of a container and a tubular portion that extends upward from the fitting portion, The fitting portion and the cylindrical portion are made of paper, The cap for a container, wherein the tubular portion is formed in a cylindrical shape and is open at the top and bottom in the axial direction.

2. The container cap according to claim 1 , further comprising a cover member that can be opened, closed or unsealed at an axially upper portion of the cylindrical portion.

3. 3. The container cap according to claim 2, wherein the cover member has a communication hole that communicates from an axially upper portion of the cylindrical portion to an inner peripheral side of the cylindrical portion.

4. 2. The cap for a container according to claim 1, wherein an inner peripheral surface of the cylindrical portion is provided with a liquid holding portion capable of temporarily holding a liquid.

5. 5. The cap for a container according to claim 4, wherein the liquid holding portion is formed in a groove shape.

6. 2. The cap for a container according to claim 1, wherein the inner and outer diameters of the fitting portion are the same as the inner and outer diameters of the cylindrical portion.

7. 2. The container cap according to claim 1, wherein the fitting portion is configured to be able to fit into a mounting cup attached to an aerosol container.

8. 8. The container cap according to claim 7, wherein the fitting portion is configured to be able to fit with an outer circumferential surface of a mounting cup.

9. 9. The cap for a container according to claim 8, wherein the inner diameter of the fitting portion is smaller than the outer diameter of the mounting cup by 0.0 to 1.0 mm.

10. 8. The container cap according to claim 7, wherein the fitting portion is configured to be able to fit into an inner peripheral surface of a mounting cup.

11. 11. The cap for a container according to claim 10, wherein the outer diameter of the fitting portion is 0.0 to 1.0 mm larger than the inner diameter of the mounting cup.

Images