Lid body, container set, and package

Abstract

To provide a lid body capable of absorbing a difference in container diameter.SOLUTION: According to a lid body according to one embodiment of the present invention is made from a molded body of a resin sheet and seals an upper end opening of a bottomed cylindrical container with an upper end opened, the lid body comprising: an annular outer wall part engaged and attached to the outer side of an upper end part of the container; an annular placement part placed at the upper end of the container, that continuously extends inward from the outer wall part; and an annular inner wall part inserted inside the container, that continuously extends downward from the placement part. The lid body comprises a plurality of adjustment ribs formed linearly, that cross the outer wall part and the placement part; extend to the inside of the inner wall part; and swell to the opposite side of the container.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lid, a container set, and a packaging body. [Background technology]

[0002] Conventionally, in order to seal the openings of various containers, lids formed by methods such as vacuum forming of resin sheets and having a substantially uniform thickness have been widely used. The diameter of the opening of the container to be sealed with such a lid may differ slightly from the design value of the lid for various reasons. For this reason, a lid that can be appropriately fitted and locked to the container even when the diameter of the container is different is desired.

[0003] For example, Patent Document 1 proposes that in a lid for sealing a container having an opening formed in a flange shape, a concave-convex portion is formed circumferentially on the inner wall of the fitting portion located on the outside of the upper end of the container, and a further protrusion is provided approximately at the center of the convex portion protruding inward, thereby absorbing differences in the outer diameter of the container. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2008-239244 A Summary of the Invention [Problem to be solved by the invention]

[0005] For example, bucket-shaped metal cans with a completely open top, such as open-type metal pails, are widely used as containers for storing materials such as paints and mortars. In the case of such metal cans, the inner diameter of the mouth may differ by several mm depending on the manufacturer, even if the cans have the same capacity. In addition, a typical metal can has a curled part in which the top end of the body is folded outward over the entire circumference and rolled into a tube shape, but the width (tube diameter) of this curled part may also differ slightly depending on the manufacturer. In addition, in the case of a container with a tapered shape, the container diameter differs depending on the capacity, so a cover that is designed and used to match the diameter dimension is designed for each container. Furthermore, a resin container having a shape that imitates such a metal can is also used. When sealing such a container with a resin cover, a structure such as that of Patent Document 1 may not be able to fully absorb the difference in container diameter.

[0006] An object of the present invention is to provide a lid, a container set, and a packaging body that can accommodate differences in container diameters. [Means for solving the problem]

[0007] A lid body according to one embodiment of the present invention is made of a resin sheet molding and is a lid body for sealing the upper opening of a bottomed cylindrical container whose upper end is open, and is provided with an annular outer wall portion attached to the outside of the upper end of the container, an annular mounting portion extending continuously inward from the outer wall portion and placed on the upper end of the container, and an annular inner wall portion extending continuously downward from the mounting portion and inserted inside the container, and has a plurality of linear adjustment ribs that traverse the outer wall portion and the mounting portion, extend to the inside of the inner wall portion, and bulge on the opposite side to the container.

[0008] The above-mentioned lid body may further include a base portion extending inwardly continuously from a lower end of the inner wall portion, and the adjustment rib may extend to the inside of the base portion.

[0009] The above-mentioned lid body may further include a retaining portion for retaining the contents, the base portion being formed in an annular shape, the retaining portion being formed continuously from the base portion so as to seal the inside of the base portion, and the adjustment rib may cross the base portion.

[0010] The above-mentioned lid body may further include an annular flange portion continuing outward from the lower end of the outer wall portion, and the adjustment rib may not be formed at least on the outer periphery of the flange portion.

[0011] In the above-described lid, a maximum radial distance between the outer wall portion and the inner wall portion may be 3 mm or more and 10 mm or less.

[0012] A container set according to one embodiment of the present invention includes the above-mentioned lid body, and a container formed in a bottomed cylindrical shape with an open upper end, the upper end opening of which can be sealed by the lid body.

[0013] The packaging body according to the present invention in accordance with the present invention comprises the above-mentioned lid body, a container formed into a cylindrical shape with a bottom and an open upper end, the upper end opening of which is sealed by the lid body, and a liquid or powder or granular material contained inside the container. Effect of the Invention

[0014] According to the present invention, it is possible to provide a lid, a container set, and a packaging body that can accommodate differences in container diameters. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view showing a lid according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the lid of FIG. [Diagram 3] 2 is a cross-sectional view of a package using the lid of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing a lid 100 according to one embodiment of the present invention. Fig. 2 is a plan view of the lid 100.

[0017] The lid 100 is made of a molded resin sheet. Methods for forming the lid 100 include, for example, vacuum forming and compressed air forming. Materials for the sheet forming the lid 100 include, for example, thermoplastic resins such as polystyrene, polyethylene terephthalate, polypropylene, polyethylene, polycarbonate, ABS resin, and acrylic resin. The thickness of the lid 100 depends on the material, but can be, for example, 0.2 mm to 0.8 mm, preferably 0.3 mm to 0.6 mm.

[0018] As shown in FIG. 3, the lid 100 seals the top opening of the bottomed cylindrical container 200 whose top is open. A first content 300 is accommodated in the internal space below the lid 100 in the container 200, and a second content 400 is accommodated on the lid 100. The container 200 is typically a metal can formed from a metal plate and having a curled portion 201 on the outer top end. The first content 300 is assumed to be a liquid or powder. The first content 300 may be directly put into the container 200. The second content 400 is not particularly limited, but may be a material (e.g., a hardener, a foaming agent, etc.) that modifies the first content 300 by mixing with the first content 300. The second content 400 may be directly placed on the lid 100, or may be placed in a state of being accommodated in a bag or the like. The combination of the lid 100 and the container 200 that can be sealed by the lid 100 is one embodiment of a container set according to the present invention. Also, the container 200 that contains liquid or powder and has an upper opening sealed by the lid 100 is one embodiment of a package according to the present invention.

[0019] The lid 100 has an outer wall 111, a flange 112, a mounting portion 113, an inner wall 114, a base 115, and a holding portion 116. The outer wall 111 is formed in an annular shape (short cylinder) and is attached to the outside of the upper end (curl portion 201) of the container 200. The flange 112 is formed in an annular shape that continues from the lower end of the outer wall to the outside. The mounting portion 113 is formed in an annular shape that continues from the outer wall 111 and extends inward, and is placed on the upper end of the container. The inner wall 114 is formed in an annular shape that continues from the mounting portion 113 and extends downward, and is inserted inside the container 200. The base 115 is formed in an annular shape that continues from the lower end of the inner wall 114 and extends inward. The holding portion 116 is continuous with the base portion 115 so as to seal the inside of the base portion 115, and is formed into a shape capable of holding the second content 400.

[0020] In addition, the lid 100 is formed with a plurality of adjustment ribs 121, a plurality of reinforcement ribs 122, a plurality of locking projections 123, and a plurality of overlapping projections 124. The adjustment rib 121 is formed to bulge linearly on the side opposite the container 200, crosses the outer wall portion 111 and the placement portion 113, and extends at least to the inside of the inner wall portion 114, preferably crosses the inner wall portion 114, more preferably extends to the inside of the base portion 115, and further preferably crosses the base portion 115. The reinforcement rib 122 is formed on the holding portion 116 in a pattern such as a radial pattern, a lattice pattern, or a concentric pattern. The locking projections 123 are formed on the lower portion of the outer wall portion 111 at intervals in the circumferential direction, and each of them bulges inward. The overlapping projections 124 are formed on the body of the holding portion 116 at intervals in the circumferential direction, and bulge outward.

[0021] The outer wall portion 111 is easily stretched in the circumferential direction by forming the adjustment rib 121. As a result, when the outer diameter of the upper end of the container 200 is larger than the reference diameter, the outer wall portion 111 is elastically deformed so as to be pushed and expanded in the radial direction by contacting the container 200, and is extended in the circumferential direction and expanded in diameter. Furthermore, the outer wall portion 111 is preferably formed in a tapered shape with a slightly larger diameter on the lower side so that it can be easily pushed and expanded by the container 200. The taper angle of the outer wall portion 111 can be, for example, more than 0° and 15° or less, preferably 5° or more and 12° or less. The height of the outer wall portion 111 is set to a height that can accommodate the curled portion 201 of the container 200 and can arrange a locking protrusion 123 described later below the curled portion 201. The specific height of the outer wall portion 111 (the vertical distance from the apex of the mounting portion 113, not including the adjustment rib 121, to the lower end of the outer wall portion 111) can be, for example, 5 mm or more and 15 mm or less, preferably 7 mm or more and 12 mm or less.

[0022] The flange portion 112 does not have the adjustment rib 121 for improving the deformability formed at least on the outer periphery. This restricts the flange portion 112 from stretching in the circumferential direction, thereby restricting the expansion of the diameter of the lower end portion of the outer wall portion 111. This restricts the locking projection 123 from climbing over the curled portion 201 of the container 200, and prevents the lid body 100 from being unintentionally detached from the container 200.

[0023] The placement portion 113 abuts against the upper end of the container 200 to determine the position of the lid 100. The corners of the placement portion 113, the outer wall 111, and the inner wall 114 may be chamfered, and the radial width of the substantially flat area of ​​the placement portion 113 may be equal to or greater than the width of the plane of the upper end of the container 200. The placement portion 113, like the outer wall 111, is easily stretched in the circumferential direction by forming the adjustment rib 121. The placement portion 113 expands in diameter following the outer wall 111 expanded by the container 200. The placement portion 113 is a portion to which a user applies force in order to press the container 200 against the outer wall 111 so as to expand the diameter of the outer wall 111. Specifically, the lid 100 is disposed slightly eccentrically with respect to the container 200, and the upper end of the container 200 is abutted against a part of the placement portion 113. Then, by pressing down on a position of mounting portion 113 that is slightly angularly different from the position where mounting portion 113 first contacted the upper end of container 200, outer wall portion 111 and mounting portion 113, and ultimately inner wall portion 114, are expanded in diameter between them, so that mounting portion 113 can be brought into contact with the upper end of container 200. By sequentially shifting the position where mounting portion 113 is pressed down, lid body 100 can be attached to container 200 so that mounting portion 113 contacts the upper end of container 200.

[0024] In order to facilitate insertion into the container 200, the inner wall 114 is preferably formed in a tapered shape that reduces and expands in diameter toward the bottom. The taper angle of the inner wall 114 can be, for example, more than 0° and less than 10°, preferably 2° or more and 6° or less. The inner wall 114 is inclined outward from the bottom end as the center, that is, the taper angle increases, so that the upper end expands in diameter following the expansion of the diameter of the mounting part 113, because the inner wall 114 has the adjustment rib 121. In this way, the lid 100 is provided with the inner wall 114 having the adjustment rib 121, so that the mounting part 113 and the outer wall 111 can be expanded in diameter relatively greatly, and therefore the width that can absorb the difference in the diameter of the container 200 is large. It is preferable that the maximum radial distance between the inner wall 114 and the outer wall 111 is slightly larger than the expected diameter of the curl part 201 of the container 200. Specifically, the maximum radial distance between the inner wall portion 114 and the outer wall portion 111 is preferably 3 mm or more and 10 mm or less, and more preferably 4 mm or more and 8 mm or less.

[0025] The base 115 supports the lower end of the inner wall 114. It is preferable that the corners of the base 115 and the inner wall 114 are not excessively chamfered in order to determine the starting point of the inclination of the inner wall 114. In addition, since the base 115 is also formed with the adjustment rib 121, the base 115 can be deformed to discontinuously incline the inner wall 114, so that it is easy to attach the lid 100 to the container 200 in stages as described above.

[0026] In this embodiment, the holding part 116 is formed in a pot shape having a body and a bottom in order to hold the second content 400. The holding part 116 may be a flat plate integral with the base part 115, or may have a protrusion for holding the second content 400, a recess into which the second content 400 fits, or the like.

[0027] The adjusting rib 121 increases the diameter of the outer wall portion 111 and the placing portion 113 by elastically bending and deforming so as to reduce its height and expand its width in a cross-sectional view. The adjusting rib 121 also makes it easy to fold the sheet along the adjusting rib 121, making it possible for the lid body 100 to deform unevenly when the lid body 100 is attached to the container 200 in stages. The adjusting rib 121 is preferably formed linearly with a constant width in a plan view. The cross-sectional dimensions of the adjusting rib 121 can be reliably set to the minimum limit that can be molded. Specifically, the height of the adjusting rib 121 can be, for example, 0.5 mm or more and 2.0 mm or less, preferably 0.7 mm or more and 1.5 mm or less. The cross-sectional area of ​​the inner space of the adjusting rib 121 can be set to 0.5 mm or more and 0.5 mm or less. 2 More than 5.0mm 2 Less than 1.0mm, preferably 1.0mm 2 More than 3.0mm 2 It can be as follows:

[0028] In addition, it is preferable that a small number of groups of adjustment ribs 121 formed close to each other are arranged at regular intervals on the lid body 100. This ensures the moldability and shape accuracy of the lid body 100 while increasing the deformability for gradually attaching the lid body 100 to the container 200. In addition, the mounting portion 113 does not have the adjustment ribs 121, and an area that the user can easily press toward the container 200 is secured, making it easier to attach the lid body 100 to the container 200. The number of adjustment ribs 121 formed close to each other in the same group can be, for example, 1 to 4. The intervals between the adjustment ribs 121 in the same group can be the minimum that can be formed reasonably, and may be set somewhat wider in consideration of aesthetics. The specific center-to-center distance at the center of the width direction of the mounting portion 113 of the adjustment ribs 121 in the same group can be, for example, 3 mm to 15 mm, preferably 4 mm to 7 mm, although it depends on the size of the lid body 100 and the thickness of the sheet. The interval between the groups of the adjustment ribs 121 can be, for example, 20 mm or more and 100 mm or less, and preferably 30 mm or more and 80 mm or less.

[0029] The reinforcing ribs 122 are provided to reinforce the holding portion 116. The reinforcing ribs 122 may be provided in portions other than the holding portion 116, but since the portions other than the holding portion 116 have a relatively complicated three-dimensional shape, there is little need to form the reinforcing ribs 122. The shape, pattern, etc. of the reinforcing ribs 122 can be designed based on well-known techniques.

[0030] The locking projection 123 is formed so that the distance between its tip and the inner wall portion 114 is smaller than the width (tube outer diameter) of the curled portion 201 of the container 200, and engages with the curled portion 201 to prevent the lid body 100 from being unintentionally detached from the container 200. The locking projection 123 also provides a snapping sensation when the lid body 100 is attached to the container 200, thereby informing the user that the lid body 100 is properly attached. The locking projection 123 is preferably formed in a line extending in the circumferential direction so as to exert a sufficient locking effect. As shown in the figure, the locking projection 123 may be formed so as to be continuous with the group of adjustment ribs 121 in order to improve the design.

[0031] When multiple lid bodies 100 are stacked, the stacking projections 124 come into contact with the base portion 115 of the lower lid body 100, preventing the sheets from sticking together and facilitating separation of the lid bodies 100.

[0032] As described above, the lid 100 includes the outer wall 111, the mounting portion 113, and the inner wall 114 that fit onto the upper end of the container 200, and has the linear adjustment rib 121 that crosses the outer wall 111 and the mounting portion 113 and reaches the inside of the inner wall 114, so that the taper angle of at least the upper portion of the inner wall 114 can be increased and the diameters of the outer wall 111 and the mounting portion 113 can be increased reasonably. Therefore, the lid 100 can absorb a relatively large difference in the container diameter of the container 200.

[0033] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and the components can be changed, omitted, added, etc., based on common technical knowledge. As a specific example, the lid body according to the present invention may be such that the base portion is omitted and the inner wall portion and the holding portion are integrally formed. Furthermore, the lid body according to the present invention may be provided with a portion that is formed, for example, in a dome shape that bulges upward instead of the holding portion and that seals the inside of the base portion. [Explanation of symbols]

[0034] 100 Lid 111 Exterior wall 112 Flange part 113 Placement section 114 Inner wall 115 Base 116 Holding part 121 Adjustment rib 122 Reinforcing rib 123 Locking protrusion 124 Stacked protrusions 200 containers 201 Curl Department 300 First Container 400 Second Container

Claims

1. A lid body made of a resin sheet and configured to seal an upper end opening of a bottomed cylindrical container having an open upper end, an annular outer wall portion attached to the outside of the upper end portion of the container; a ring-shaped mounting portion extending inwardly from the outer wall portion and mounted on an upper end of the container; an annular inner wall portion extending downwardly from the mounting portion and inserted into the inside of the container; Equipped with A lid body having a plurality of linearly formed adjustment ribs that traverse the outer wall portion and the placement portion, extend into the interior of the inner wall portion, and bulge on the side opposite the container.

2. Further comprising a base portion extending inwardly from a lower end of the inner wall portion, The lid of claim 1 , wherein the adjustment rib extends to an interior of the base.

3. Further comprising a holding portion for holding the contents, The base portion is formed in an annular shape, The retaining portion is formed continuously from the base portion so as to seal the inside of the base portion, The closure of claim 2 , wherein the alignment rib traverses the base.

4. The outer wall portion further includes an annular flange portion extending outward from a lower end of the outer wall portion. The cover according to claim 1 , wherein the adjustment rib is not formed at least on an outer periphery of the flange portion.

5. The lid according to claim 1 , wherein a maximum radial distance between the outer wall portion and the inner wall portion is 3 mm or more and 10 mm or less.

6. A lid body according to any one of claims 1 to 3, a container formed in a cylindrical shape with an open top end and a bottom, the top opening of which can be sealed by the lid; A container set comprising:

7. A lid body according to any one of claims 1 to 3, a container formed in a bottomed cylindrical shape with an open upper end, the upper end opening being sealed by the lid; A liquid or powder contained inside the container; A packaging body comprising:

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