JP2017193382A - container - Google Patents

Abstract

To provide a container which is easy to manufacture and provides a container whose airtightness is satisfactorily maintained over a long period of time. A container 1 of the present invention includes a container body 2 having an opening 21 and a lid 3 that can close the opening 21, and the lid 3 has an inner ring 7 that contacts the container body 2. The inner ring 7 is made of a sheet molded body and has a support wall 76 inside. The inner ring 7 has a space S1 between an inner surface portion 72 that forms a surface directed toward the inner side of the container and the support wall 76, and between the outer surface portion 73 that forms a surface directed toward the outer side of the container and the support wall 76. Also has a space S2. [Selection] Figure 3

Description

  The present invention relates to a container.

A container including a container body having an opening and a lid capable of hermetically closing the opening is used. For example, an airtightly closable lid is provided as a container for a liquid-impregnated sheet for storing a plurality of sheets impregnated with a detergent for washing hands and fingers or a detergent for removing makeup. A container is used, and the wet state of the liquid-impregnated sheet can be maintained for a long time by being accommodated in the container.
As a container having a conventional airtightly closable lid, an annular hanging piece called an inner ring is provided inside the outer periphery of the lid, and the hanging piece is brought into contact with the inner surface of the opening of the container body. Containers that ensure hermeticity are known. For example, Patent Document 1 proposes a container devised so that the close contact state between the hanging piece provided on the lid and the inner surface of the opening of the container body is maintained over a long period of time.

However, when a wide-mouthed container having a large opening is manufactured from synthetic resin by injection molding, good airtightness can be obtained between the container body and the lid unless injection molding and mold correction are repeated. In many cases, it takes time and effort to adjust the dimensions of the mold in order to obtain a container with good airtightness.
Moreover, when the shape of the opening is not a perfect circle, sufficient airtightness may not be obtained in the completed container. Further, even when sufficient airtightness is obtained in the container immediately after manufacture, the airtightness of the container body and the lid may be lowered due to the passage of time, repeated opening / closing of the lid, or the like.

Japanese Patent Laid-Open No. 2005-187055

  The subject of this invention is related with the container which can eliminate the fault which the prior art mentioned above has.

  The present invention is a container comprising a container body having an opening and a lid that can close the opening, the lid having an inner ring that contacts the container body, and the inner ring is The container is made of a sheet molded body and has a space inside.

Moreover, this invention provides the product in a container with which the product was accommodated in the said container.
The present invention is also a method for manufacturing the container, wherein the inner ring forming member made of a sheet molded body on which an inner ring is formed is disposed on the main body of the lid, and the inner ring is disposed on the lid. A position adjusting step of adjusting the position of the inner ring by pressing outward from the center side of the body, and a fixing step of fixing the inner ring forming member after the position adjustment to the main body of the lid body A method for manufacturing a container is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the container which is easy to manufacture and whose airtightness is favorably maintained over a long period of time is provided. Moreover, according to the product in a container of the present invention, a preferable state of the product accommodated in the inside, for example, an appropriate wet state, can be stably maintained over a long period of time.

FIG. 1 is a perspective view showing a container according to an embodiment of the present invention. 2 is a cross-sectional view showing a cross section taken along line II-II of FIG. 1 of the container main body and the lid in the container shown in FIG. FIG. 3 is an enlarged cross-sectional view showing a part of a cross section taken along line II-II in FIG. 1, FIG. 3 (a) is an open state, and FIG. 3 (b) is a close state. FIG. 4 is an explanatory view of a preferred method for producing the container shown in FIG. FIG. 5 is an explanatory view of a preferred method for producing the container shown in FIG. FIG. 6 is a cross-sectional view (corresponding to FIG. 3A) showing a part of a container according to another embodiment of the present invention.

Below, this invention is demonstrated based on the preferable embodiment.
As shown in FIGS. 1 and 2, the container 1 according to one embodiment of the present invention includes a container body 2 having an opening 21 and a lid 3 that can air-tightly close the opening 21.
As shown in FIG. 2, the container body 2 has a cylindrical peripheral wall portion 22 and a bottom portion 23 that closes the lower end of the peripheral wall portion 22. The peripheral wall portion 22 has an opening 21 at its upper end. Further, as shown in FIG. 3, the container body 2 has a ring abutting portion 6 on the inner surface near the upper end of the peripheral wall portion 22 to which an inner ring 7 of the lid 3 to be described later comes into close contact. A main body rib 61 projects from the contact portion 6. The main body rib 61 has an arc-shaped cross section and is formed over the entire circumference of the peripheral wall portion 22 of the container main body 2.
Due to the presence of the main body rib 61, the adhesion between the inner ring 7 and the ring contact portion 6 is improved, and the airtightness is more reliably ensured.
Further, a flange portion 24 is formed on the peripheral portion of the opening 21 so as to project outward from the peripheral wall portion 22, and an annular hanging portion 25 is formed at the tip of the flange portion 24. A hill portion 23a that protrudes downward is formed at a position in the bottom portion 23 that is spaced slightly inward from the peripheral edge portion.

The lid 3 is provided so that the opening 21 of the container body 2 can be opened and closed.
As shown in FIG. 1, the lid 3 in the present embodiment is rotatably connected to the container body 2 via a hinge portion 4 and is formed on the back surface of the locking piece 5 provided on the lid 3. When the protrusion 51 is engaged with the lower end of the hanging part 25 of the container body 2, the closed state by the lid 3 is stably maintained. On the other hand, the engaging piece 5 is lifted upward while pulling forward with a finger, so that the engaged state with respect to the lower end of the hanging part 25 is released, and the opening 21 is opened. FIG. 2 shows a state in which the connection by the hinge portion 4 is released and the container body 2 and the lid 3 are separated in the vertical direction.

  Note that the hinge portion 4 described above has an overhang portion 42 extending from the peripheral portion of the lid 3 between the pair of bearing portions 41 and 41 protruding from the hanging portion 25 of the container body 2, and the overhang portion. The container main body 2 and the lid 3 are connected by inserting shaft projections (not shown) provided at both ends of 42 into holes provided in the bearing portions 41 and 41.

  The lid 3 according to the present embodiment includes a main body 30 made of an injection molded product of synthetic resin and an inner ring forming member 70 made of a sheet molded product. The sheet molded product is a synthetic resin sheet molded into a predetermined shape, and the molding method is not particularly limited, but vacuum molding, pressure molding, and press molding are preferable. The synthetic resin sheet may have a single layer structure or a multilayer structure of two or more layers. The synthetic resin sheet or the synthetic resin constituting the layer contained therein includes, for example, polyolefins such as polypropylene and polyethylene, polyesters such as polystyrene and polyethylene terephthalate, polyamides, and the like. The sheet is made of the same material as the main body 30 of the lid 3 from the viewpoint of integration with the main body 30 of the lid 3 made of a synthetic resin injection-molded product (for example, integration by ultrasonic sealing described later). Is preferred.

  As shown in FIGS. 2 and 3, the main body portion 30 of the lid 3 has a top surface portion 31 that is formed in a curved surface convex upward, and an annular flat portion 32 that is formed around the top surface portion 31. An annular hanging portion 33 is formed on the outer peripheral portion of the flat portion 32. In addition, an inner hanging portion 35 is formed on the inner side of the main body portion 30 that is separated from the hanging portion 33.

As shown in FIGS. 2 and 3, the inner ring forming member 70 is a member that forms the inner ring 7, and is directed to a portion 71 arranged along the lower surface of the top surface portion 31 and the inner side of the inner ring 7. An inner surface 72 that forms a surface, an outer surface portion 73 that forms a surface directed to the outside of the container of the inner ring 7, and a portion 74 that is disposed along the lower surface of the flat portion 32 of the main body 30. A portion extending from the portion 72 to the outer surface portion 73 is separated from the main body portion 30 to form the inner ring 7.
The inner ring 7 is in contact with the container main body 2 to improve the airtightness between the container main body 2 and the lid 3, and is usually provided at a site separated from the peripheral edge of the lid 3, It abuts on the inner surface of the peripheral wall portion 22 at or near the portion 21.

The inner hanging portion 35 in the main body 30 of the present embodiment is disposed inside the inner ring 7 and constitutes a support wall 76.
The support wall 76 keeps the amount of deformation of the inner ring 7 when the inner ring 7 is in close contact with the main body rib 61 within a predetermined range, and is less likely to be deformed than the inner ring 7 that is easily deformed. Yes. In order to make the deformation difficult, various methods such as increasing the thickness of the support wall 76 more than the thickness of the inner ring forming member 70 can be employed.
The support wall 76 also plays a role of improving the strength of the main body 30 of the lid 3.
Furthermore, since the inner ring 7 has the support wall 76 inside, when the container 1 receives stress such as a drop impact, the inner ring 7 is prevented from being greatly deformed, and the hermeticity of the container 1 is maintained. be able to. Moreover, when the dimension of the main body rib 61 is changed and the airtightness of the container 1 is increased, there is also an effect of reducing the deformation sound generated when the inner ring 7 is fitted to the main body rib 61.

  As shown in FIG. 3, the inner ring 7 has a space S1 between the inner surface portion 72 and the support wall 76, and also has a space S2 between the outer surface portion 73 and the support wall 76. A space S3 is also provided between the lower end of the support wall 76 and the facing portion 75 thereof. In the inner ring forming member 70, a portion 74 disposed along the lower surface of the flat portion 32 is joined to the flat portion 32 at a fusion portion 77, thereby being integrated with the main body portion 30. . The fused portion 77 may be formed continuously over the entire circumference of the lid 3 or may be intermittently formed in the circumferential direction of the lid 3. Moreover, it may replace with melt | fusion and may be joined with the adhesive agent. Furthermore, the inner ring forming member 70 may be bonded to the lower surface of the top surface portion 31 by fusion, an adhesive, or the like. As a fusion method, an ultrasonic seal, a high frequency seal, a heat seal or the like can be used.

  According to the container 1 of the present embodiment, as shown in FIG. 3, the inner ring 7 has a space S <b> 2 between the outer surface portion 73 and the support wall 76, and is pressed by the ring abutting portion 6. Since it is easy to displace toward the inner side and is excellent in resilience from the displaced state, the main body part 30 and the container main body 2 of the lid 3 can be used without using ones whose dimensions are controlled with high precision. Good airtightness is obtained between the lid 3 and the container body 2. Therefore, the container 1 of the present embodiment can be easily manufactured without taking time and effort to adjust the dimensions of the mold.

  For the same reason, according to the container 1 of the present embodiment, even if the passage of time or the opening and closing of the lid is repeated, the hermeticity of the container main body and the lid is hardly lowered, and the hermeticity is long-term. Is maintained well over the entire range.

  The space S2 between the outer surface portion 73 of the inner ring forming member 70 and the support wall 76 has a thickness in the direction perpendicular to the support wall 76 of at least 0.5 mm, preferably 1 mm or more. Moreover, the distance L1 between the lower end of the support wall 76 and the opposing part 75 becomes like this. Preferably it is 1 mm or less, More preferably, it is 0.5 mm or less.

  Various plastic materials are used as the synthetic resin when the main body 30 of the lid 3 and the container main body 2 are formed from synthetic resin. For example, polyolefin such as polypropylene and polyethylene, polyester such as polystyrene and polyethylene terephthalate, Although polyamide etc. are mentioned, it is not restrict | limited to these.

A preferable manufacturing method for the container 1 of the present embodiment will be described.
First, the main body 30 of the container main body 2 and the lid body 3 are each manufactured by normal injection molding. Then, for example, a synthetic resin sheet such as polypropylene is heated with a heater or the like, if necessary, and then molded into a predetermined shape by vacuum molding, pressure molding, press molding, or the like to obtain a sheet molded body. If there is an unnecessary part in the sheet molding, trimming is performed.
As shown in FIG. 5, an arrangement process of placing the obtained sheet molded body as an inner ring forming member 70 on the inner surface of the main body 30 as shown in FIG. 5, a position adjustment process for adjusting the position of the inner ring 7, and an inner ring A fixing step of the forming member 70 is performed.

  In the position adjustment process of the inner ring 7, the composite 3A in which the main body 30 and the inner ring forming member 70 are overlapped is set on the deformation jig 8 having the inner ring insertion portion 81 formed as shown in FIG. To do. Alternatively, after the inner ring forming member 70 is set on the deformation jig 8, the main body 30 is overlapped with the inner ring forming member 70 to form the composite 3A (arrangement step). When setting the composite 3 </ b> A or the inner ring forming member 70 in the deformation jig 8, the inner ring 7 is inserted into the inner ring insertion portion 81. In addition, prior to the setting, by adjusting the position of the pressing member 82 for pressing the inner surface portion 72 of the inner ring forming member 70 in advance, the arranging step and the position adjusting step can be performed simultaneously. A long hole 82a is formed in the pressing member 82, and the complex 3A is deformed by changing the fixing position when the pressing member 82 is fixed to the support base 84 with a fixing tool 83 such as a bolt. The magnitude of the deformation force P applied to the inner ring 7 when set on the tool 8 can be appropriately adjusted.

  The inner ring forming member 70 formed by vacuum forming or the like has a large variation in dimensions after forming as compared with the injection-molded container main body 2 and the main body 30 of the lid 3. Therefore, it is preferable that the positional relationship between the inner ring 7 and the main body rib 61 of the ring contact portion 6 is adjusted by using the pressing member 82 or the like, and is adjusted accurately. That is, by contacting and pressing the inner surface portion 72 of the inner ring forming member 70 with the pressing member 82, the inner ring is deformed outward from the center side of the lid body, and the inner ring 7 and the ring abutting portion 6 are deformed. The positional relationship with the main body rib 61 can be adjusted accurately.

Therefore, by adjusting the deformation force P, it is possible to appropriately adjust the contact state between the inner ring 7 and the ring contact portion 6 in the completed container. By performing such adjustment, the airtightness is improved. It is possible to obtain a container that is high and whose airtight state is stably maintained.
In the figure, reference numeral 85 denotes a non-movable member that can be fixed only at a specific position of the support base 84 by a fixing tool 86 such as a bolt, and is appropriately formed of an iron plate or the like between the pressing member 82 and the non-movable member 85. The number of shims 87 can be interposed. By appropriately adjusting the number of shims 87, the fixing position of the pressing member 82 can be adjusted with high accuracy.

  In the fixing process of the inner ring forming member 70, the predetermined position of the inner ring forming member 70 is fixed to the main body portion 30 while maintaining the deformed state of the inner ring 7 in the position adjusting process of the inner ring 7. The deformation state of the inner ring 7 is not completely restored even when it is removed from the deformation jig, so that at least a part of the deformation remains. For fixing the inner ring forming member 70 to the main body 30, for example, a horn for ultrasonic sealing is applied to a portion indicated by a symbol B in FIG. 5, and the inner ring forming member 70 is ultrasonically sealed to the main body 30. The flat portion 32 is fused.

  Thus, by fixing the inner ring forming member in a state where the inner ring 7 is deformed, the injection molding and the mold correction are not repeated between the lid 3 and the container body 2. A container having excellent airtightness can be obtained. From the viewpoint of enabling such adjustment, the composite body 3A in which the main body portion 30 and the inner ring forming member 70 are stacked has the inner surface portion 72 and the support wall 76 of the inner ring forming member 70 in a state where the inner ring is not pressed. It is preferable that a space S1 having a thickness in a direction perpendicular to the support wall 76 of at least 1 mm or more, preferably 2 mm or more is generated.

  In the example shown in FIGS. 4 and 5, the annular inner ring 7 is pressed and deformed in a direction Y orthogonal to the rotation axis of the lid 3, and the inner ring forming member 70 is moved to the main body of the lid 3 in this state. In this example, the annular inner ring 7 is pressed and deformed in the direction X along the rotation axis of the lid 3, and the inner ring forming member 70 is closed in that state. You may fix to the main-body part 30 of the body 3. FIG. Further, the annular inner ring 7 is pressed and deformed in both the direction Y orthogonal to the rotation axis of the lid 3 and the direction X along the rotation axis, and the inner ring forming member 70 is closed in this state. You may fix to the 3 main-body part 30. FIG.

The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, the container according to the present invention may be provided with an inner ring that does not have the support wall 76 as in the inner ring 7A shown in FIG. The rib 61 may not be provided. In this case, the peripheral wall portion 22 of the container main body 2 and the inner ring are in direct contact with each other, and the inner ring is deformed, whereby the airtightness in the container main body can be maintained.

  In addition, various products can be listed as the items to be stored in the container, but the products and other items to be stored in the container are not limited to the sheet impregnated with the cleaning agent, but are impregnated with a liquid other than the cleaning agent. It may be a liquid-impregnated sheet, or may be a cleaning agent, food, hairdressing agent, or the like that does not impregnate the sheet. Examples of the sheet impregnated with the liquid in the liquid-impregnated sheet include paper, nonwoven fabric, woven fabric, knitted fabric, and composites thereof. The liquid-impregnated sheet may exhibit water decomposability so that it can be discarded in the toilet, or may not have water decomposability. Moreover, the liquid-impregnated sheet may be accommodated in the container of the present invention in a state where a plurality of laminated sheets are put in a simple bag.

In addition, the product and other objects to be accommodated in the container may be liquid, cream or paste, or solid. Moreover, these 2 or more types may be accommodated in a non-mixed state, or may be accommodated in a mixed state.
In addition, the product contained in the container in the container-containing product may be a sheet not impregnated with liquid, a cotton swab, absorbent cotton, or the like, in addition to the liquid-impregnated sheet and food described above. Moreover, the preferable state of the product maintained by accommodating in the container of this invention may be a dry state, a non-discolored state, a non-oxidized state, etc. instead of a moderate wet state.

  Moreover, in the manufacturing method of the container of this invention, you may perform the position adjustment process of an inner ring after the arrangement | positioning process which arrange | positions an inner ring formation member in the main-body part of a cover body. Further, in the container manufacturing method of the present invention, the portion for pressing the inner ring outward from the center side of the lid may be any one or a plurality of locations in the circumferential direction of the lid, For example, as shown in FIG. 4, only a pair of opposing portions in the direction Y orthogonal to the rotation axis of the lid 3 may be provided, or the direction Y orthogonal to the rotation axis of the lid 3 and the A pair of opposing portions in each of the directions X parallel to the rotation axis may be used. Further, a pair of opposing portions in the direction Y orthogonal to the rotation axis of the lid body 3 is pressed outward from the center side of the lid body, while the direction X parallel to the rotation axis of the lid body 3 You may press a pair of site | part which opposes in toward the center side from the outer side of a cover body.

DESCRIPTION OF SYMBOLS 1 Container 2 Container main body 21 Opening part 22 Peripheral wall part 3 Lid body 30 Main body part 3A Composite body 6 Ring contact part 61 Main body rib 7, 7A Inner ring 70 Inner ring formation member 76 Support wall 77 Fusion part 8 Deformation jig 81 Inner ring insertion portion 82 Press member 85 Non-movable member

Claims (5)

A container comprising a container body having an opening and a lid capable of closing the opening,
The lid body has an inner ring that comes into contact with the container body,
The inner ring is composed of a sheet molded body, and has a support wall inside,
The inner ring has a space between an inner surface portion that forms a surface directed toward the inside of the container and the support wall, and a space between the outer surface portion that forms a surface directed toward the outside of the container and the support wall. Having a container.   The container according to claim 1, wherein the inner ring is fixed in a state of being deformed outward from the center side of the lid.   The said cover body has a main-body part which consists of an injection molding product of a synthetic resin, and the said support wall distribute | arranged to the inside of the said inner ring consists of a part of this main-body part. container.   The said container main body has a surrounding wall part and a bottom part, The inner surface of this surrounding wall part is equipped with the body rib which contact | abuts with the said inner ring and keeps airtightness in this container main body. The container according to any one of the above.   The product in a container with which the product was accommodated in the container of any one of Claims 1-4.

Images