JP2024040534A - Lid, container with lid, combination of lid and container - Google Patents

Abstract

[Problem] To provide a lid, a container with a lid, and a combination of a lid and a container, which are capable of preventing contents from spilling out of the lid through the penetration part onto the lid when the lid has a penetration part and is formed of a paper-based material and covers the opening of the container. [Solution] The lid is formed so as to be joinable to a container having an opening formed at the top end and an edge part forming the outer periphery of the opening, and has a joining area corresponding part corresponding to the area to be joined to the container along the edge part of the container, and a lid area corresponding part consisting of a part on the inside from the joining area corresponding part, and the lid area corresponding part has an interference part on the inside from the peripheral edge of the lid area corresponding part, and has a height difference part and a penetration part in at least a part on the inside from the inner edge of the interference part. [Selected Figure] Figure 1

Description

The present invention relates to a lid, a container with a lid, and a combination of a lid and a container.

It is widely practiced to store food and beverages, etc. (hereinafter also referred to as "contents") in a container with an opening at the top end, and then provide the container with the container closed by attaching a lid. There is.

The lid attached to the container is required to be made of a paper-based material from the perspective of reducing environmental impact. As a method for attaching a lid to a container, there is a known method (sealing method) in which the lid is bonded to the edge forming the outer periphery of the opening at the upper end of the container using a method such as a heat press. As a structure for ingesting contents from a container with a lid attached (a container with a lid), as shown in Patent Document 1, there is a structure in which the lid is peeled off (removed) from the edge of the container, and a structure in which the lid is peeled off (removed) from the edge of the container. A conceivable structure is to provide a penetration part in the body and insert a member (for example, a straw, etc.) for taking out the contents into the penetration part.

JP2014-84128A

Improved in that when the lid has a penetration part and is made of paper-based material, the contents are prevented from jumping out from the penetration part onto the lid while the lid covers the opening of the container. There is room for

The gist of the present invention is the inventions according to the following (1) to (25).

(1) Formed so as to be joined to a container having an opening formed at the upper end and an edge forming the outer periphery of the opening, and corresponding to an area along the edge of the container to be joined to the container. and a cover area corresponding part configured from a portion inside the bonding area corresponding part, and the cover area corresponding part has a baffle part inward from a peripheral edge of the lid area corresponding part. A lid body comprising: a height difference portion and a penetrating portion in at least a portion inside from an inner edge of the baffle portion.
(2) The lid according to (1) above, wherein the lid region corresponding portion has the through portion formed inside and/or inside the height difference portion.
(3) The lid according to (1) above, wherein the penetration part and the baffle part are at different positions in the height direction.
(4) The lid according to (1) above, wherein the height difference portion is formed so as to surround the periphery of the penetration portion.
(5) The lid according to (1) above, wherein a flat part is formed inside the height difference part.
(6) The lid according to (5), wherein the plane portion and the baffle portion are at different positions in the height direction.
(7) The lid according to (1) above, wherein the penetration part and the baffle part are at the same heightwise position.
(8) The lid according to (1) above, wherein an inclined portion is formed inside the height difference portion.
(9) The lid according to (1) above, wherein at least a portion of the wall portion in the height difference portion has a wavy shape.
(10) The lid according to (1), wherein the height difference portion has a plurality of grooves, and the bottoms of the plurality of grooves are arranged concentrically.
(11) The lid according to (1) above, wherein the height difference portion has a groove, and an uneven structure is formed in the groove.
(12) The lid body according to (1), wherein the height difference portion has a groove portion, and the width of the groove portion is partially different in a plan view of the lid region corresponding portion.
(13) The lid according to (1) above, wherein the height difference portion has a step portion.
(14) The lid according to (13) above, wherein the stepped portion forms a groove.
(15) The lid area corresponding part is provided with a weakened part that guides the dividing position in the lid area corresponding part, and the weakened part includes a plurality of the through parts and at least two of the through parts. and at least one continuous portion formed between the lids according to (1) above.
(16) The lid according to (15), wherein the weakened portion has a plurality of through portions formed radially around the continuous portion.
(17) The lid region corresponding portion includes a base portion having a small opening having a smaller opening area than the opening of the container, a small lid portion that opens and closes the small opening, and a base portion and a small lid portion that opens and closes the small opening. a hinge portion connecting the small lid portion to the small lid portion, the small lid portion is configured to be rotatable relative to the base portion about the hinge portion, and at least a portion of the penetrating portion is connected to the small lid portion. The lid body according to (1) above, wherein the lid body is formed at a boundary position between an outer peripheral edge of the small opening and an opening edge of the small opening.
(18) The lid according to (17) above, wherein at least a part of the penetrating portion is formed in the height difference portion.
(19) The lid according to (17) above, wherein a knob is provided on the upper surface side of the small lid.
(20) The lid according to (19), wherein the knob has a tab member, and the tab member is joined to the upper surface side of the small lid.
(21) The lid according to (1) above, which is made of a paper-based material.
(22) A low-density part is formed in a portion from the boundary between the baffle part and the height difference part toward the height difference part, where the density of fibers constituting the paper-based material is lower than that of the baffle part. The lid described in (21) above.
(23) The lid according to (21), wherein the obstructing portion and the height difference portion are continuously formed.
(24) comprising the lid according to any one of (1) to (23) above, and the container having the opening formed at the upper end, the lid being joined to the container; Container with lid.
(25) A combination of a lid and a container, comprising the lid according to any one of (1) to (23) above, and the container having the opening formed at the upper end.

According to the present invention, when the lid has a penetration part and is made of a paper-based material, the contents do not jump out from the penetration part onto the lid while the lid covers the opening of the container. Provided are a lid, a container with a lid, and a combination of a lid and a container that can suppress the above.

FIG. 1A is a plan view showing an example of the lid according to the first embodiment. FIG. 1B is a cross-sectional view schematically showing a longitudinal cross-section taken along the line AA in FIG. 1A. FIG. 2A is a plan view showing an example of the lid according to the second embodiment. FIG. 2B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line BB in FIG. 2A. FIG. 3A is a plan view showing an example of a lid according to Modification 1 of the second embodiment. FIG. 3B is a cross-sectional view schematically showing the state of the vertical cross-section taken along the line CC in FIG. 3A. FIG. 4A is a plan view showing an example of a lid body according to Modification 2 of the second embodiment. FIG. 4B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line BB in FIG. 4A. 5A and 5B are cross-sectional views showing an example of a lid body according to Modification 1 of the first embodiment. FIG. 6A is a plan view showing an example of a lid body according to Modification 3 of the second embodiment. FIG. 6B is a cross-sectional view schematically showing the state of the vertical cross-section taken along the line DD in FIG. 6A. FIG. 7A is a plan view showing an example of a lid body according to modification example 4 of the second embodiment. FIG. 7B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line EE in FIG. 7A. FIG. 8A is a plan view showing an example of a lid body according to modification example 5 of the second embodiment. FIG. 8B is a cross-sectional view schematically showing the state of the vertical cross-section taken along the line FF in FIG. 8A. FIG. 8C is a cross-sectional view schematically showing a longitudinal cross-section taken along line GG in FIG. 8C. FIG. 8D is a cross-sectional view schematically showing a vertical cross-sectional state of a portion corresponding to FIG. 8C in another example of Modification 5 of the second embodiment. FIG. 9 is a plan view showing an example of the lid according to the fourth embodiment. FIG. 10A is a plan view showing an example of a lid according to modification 6 of the second embodiment. FIG. 10B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line HH in FIG. 10A. FIG. 10C is a cross-sectional view schematically showing the state of the vertical cross-section taken along line II in FIG. 10A. FIG. 11A is a plan view showing an example of a lid body according to modification 7 of the second embodiment. FIG. 11B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line JJ in FIG. 11A. FIG. 12 is a plan view showing an example of a lid body according to modification example 9 of the second embodiment. FIG. 13A is a plan view showing an example of a lid body according to Modification 8 of the second embodiment. FIG. 13B is a plan view showing an example of a lid according to Modification 8 of the second embodiment. FIG. 14A is a plan view showing an example of the lid according to the third embodiment. FIG. 14B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line KK in FIG. 14A. FIG. 15A is a plan view showing an example of a lid according to Modification 1 of the third embodiment. FIG. 15B is a cross-sectional view schematically showing the state of the vertical cross-section taken along the line LL in FIG. 15A, and a partially enlarged view of the portion indicated by the dashed-dotted line. FIG. 16A is a plan view showing an example of a lid according to Modification 2 of the third embodiment. FIG. 16B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line MM in FIG. 16A. FIG. 17A is a plan view showing an example of a container with a lid. FIG. 17B is a cross-sectional view schematically showing the state of the vertical cross-section taken along line NN in FIG. 17A. FIGS. 18A and 18B are diagrams for explaining the boundary between the obstructing portion and the height difference portion. FIG. 19A is a sectional view showing an example of a lid according to Modification 10 of the second embodiment. FIGS. 19B and 19C are cross-sectional views showing an example of a lid body according to Modification 11 of the second embodiment.

Hereinafter, the lid according to the present invention will be explained in detail based on the drawings. The lid according to the present invention will be explained by taking as an example a lid used for a container (cup) for holding various beverages, such as a coffee cup, but it may also be used for a lid for a container for storing a beverage. The invention is not limited to this, and can also be applied as a lid for a container containing foodstuffs other than beverages. Furthermore, the lid according to the present invention can also be applied to containers that can accommodate various items other than food and drink, such as parts such as bolts and nuts, and items other than those mentioned above. Further, although the lid according to the present invention will be described below using an example of a lid having a circular shape when viewed from above, the shape of the lid is limited to one having a circular shape when viewed from above. The present invention can also be applied to various shapes other than circular shapes, such as polygonal shapes such as elliptical shapes, rectangular shapes, and triangular shapes, chamfered rectangular shapes, and chamfered polygonal shapes.

Hereinafter, a first embodiment, a second embodiment, a third embodiment, a fourth embodiment, and application examples related to the present invention will be described in order with reference to the drawings. In this specification and the drawings, components having substantially the same functional configurations are designated by the same reference numerals and redundant explanation will be omitted.

The following description is a preferred specific example of the present invention, and the content of the present invention is not limited to these embodiments. Further, in the following description, directions such as front and back, left and right, up and down, and directions of a horizontal plane are shown for convenience of explanation, but the content of the present invention is not limited to these directions. In the examples shown in FIGS. 1 to 18, the Z-axis direction is the up-down direction (the upper side is the +Z direction, the lower side is the -Z direction), and the X-axis direction is the front-rear direction (the back side is the +X direction, the front side is the -X direction). , the directions along the mutually orthogonal X-axis and Y-axis defined on a plane with the Z-axis direction as the normal, and the plane pasted by the X-axis and Y-axis. The explanation will be based on the assumption that the XY plane is a horizontal plane. The relative size ratios such as the sizes shown in each figure from FIG. 1 to FIG. 18 are described for convenience and do not limit the actual size ratios unless otherwise specified.

[1 First embodiment]
[1-1. structure]
The lid 1 according to the first embodiment is formed so as to cover a container having an opening 102 and to allow the container 101 to be joined. As will be described later using FIGS. 17A, 17B, etc., the lid 1 is joined to a container having an opening 102 formed at the upper end and an edge 103 forming the outer periphery of the opening 102 and serving as the upper edge. possible. 17A and 17B are a perspective view and a sectional view showing an example of a container with a lid 150 in which the lid 1 shown in FIG. 1 is joined to the container 101. The lid 1 can be used by being joined along the edge 103. In the lid 1, a region joined to the edge 103 in a plan view of the lid 1 is referred to as a joining region R. FIG. 1 is a plan view showing one embodiment of the lid body 1. As shown in FIG. Note that as the container 101, a container having flexibility at the edge 103 of the opening 102 is more preferably used. However, these things do not prohibit the container 101 from being a container with little or almost no flexibility, such as a metal container.

In the example of FIG. 1, the bonding region R corresponds to a region that has a shape corresponding to the opening 102 of the container 101 and is formed roughly in an annular shape along the opening 102.

The lid 1 preferably contains or is formed from a paper-based material.

(Paper-based material)
The paper-based material may not only consist of pulp, but may also contain fibers such as non-pulp natural fibers, synthetic fibers, and recycled fibers, but preferably contains 50% by mass or more of pulp, and 70% by mass or more. Those containing at least 80% by mass are more preferred, and those containing at least 80% by mass are particularly preferred, and those containing 100% by mass are particularly preferred. Paper-based materials can include synthetic resin or natural resin films, non-woven fabrics, wood-based materials such as wood foil, and even composite materials with materials such as aluminum foil. It is preferable that the total content of pulp is 50% by mass or more, and particularly preferably 80% by mass or more of pulp. The higher the pulp content, the more easily the paper-based material is biodegradable, which is preferable.

The lid 1 has a joining area corresponding portion 5A. Further, as shown in FIG. 1, the lid body 1 includes a lid area corresponding part 5B and an outer area corresponding part 5C. The lid region corresponding portion 5B is comprised of a portion that covers the opening 102. The outer region corresponding portion 5C is configured at a portion outer than the lid region corresponding portion 5B.

(Joint area corresponding part)
The joint region corresponding portion 5A is a portion of the lid 1 that corresponds to a region that comes into contact with the container 101 along the edge 103 of the container 101. That is, the joint region corresponding portion 5A is a portion of the lid 1 corresponding to the joint region R (the region facing the edge 103 of the container 101 and the region joined to the container 101). In the lidded container 150, the joint region corresponding portion 5A is a portion of the lid 1 that forms the joint 151 between the lid 1 and the container 101. Specifically, in a plan view of the lid 1 (in the example of FIG. 1, when the Z-axis direction (vertical direction) is the viewing direction), a portion forming the joint region R is defined as the joint region corresponding portion 5A. The joint region corresponding portion 5A is usually formed in an annular shape as shown in FIG. Particularly, as shown in FIG. 1, when the edge 103 of the container 101 is formed approximately in an annular shape, the joining region R becomes annular, and the joining region corresponding portion 5A is also formed in a plan view of the lid 1. , is roughly circular. The outer edge of the bonding area corresponding portion 5A is determined according to the position of the outer edge of the bonding area R. The outer edge of the joint area corresponding portion 5A may be located at the outer circumferential edge of the lid 1, or may be located inside the outer circumferential edge of the lid 1 as shown in the example of FIG. If the bonding region R between the lid 1 and the container 101 is not formed continuously, the portion sandwiched between the adjacent bonding regions R and the portion facing the edge 103 may also be formed into a bonding region corresponding portion 5A, which will be described later. shall be included.

(Lid area corresponding part)
The lid area corresponding portion 5B is a portion that covers the opening 102. In the example of FIG. 1, the lid area pairing part 5B is a part of the lid 1 that is inside from the joining area corresponding part 5A, and the center CT of the lid area pairing part 5B is the center of the lid 1. . The lid region corresponding portion 5B is a portion of the lidded container 150 that covers the opening 102. Note that the portion that covers the opening 102 is a portion that covers at least a portion of the opening 102, and includes the case where the small opening 6 is provided as described in the second embodiment and the like.

(Outer area corresponding part)
In addition, as shown in the example of FIG. 1, the outer part of the lid area corresponding part 5B of the lid body 1 is the outer area corresponding part 5C, which is the same part as the joining area corresponding part 5A or the part including the joining area R. Become.

In the lid 1, the lid area corresponding part 5B has a baffle part 8 inward from the peripheral edge 74, which is the outer periphery of the lid area corresponding part 5B, and has a baffle part 8 in a plan view of the lid 1 (in FIG. 1B, , when the Z-axis direction is the viewing direction), the baffle part 8 has a height difference part 9 and a penetration part 10 at least in a part inside from the inner edge (inner end 8A).

(obstruction part)
The baffle part 8 prevents the liquid from moving in the height direction (Z-axis direction in FIG. 1B) when the container 101 is strongly shaken, for example, when liquid is injected as the contents into the lidded container 150. This is a part that obstructs the movement of other people. The baffle part 8 is a regulating part that suppresses (obstructs) the expansion of the amplitude of the liquid wave when the container 101 is shaken and waves are generated on the liquid surface. The baffle portion 8 is formed as a portion extending inward (in the example of FIG. 1, toward the center of the lid 1 in plan view) from at least a portion of the peripheral edge 74 of the lid region corresponding portion 5B. . In the example of FIG. 1, the baffle portion 8 is formed as a portion extending inward from the entire circumference of the peripheral edge 74 of the lid region corresponding portion 5B.

(height difference section)
The height difference portion 9 is formed inward from the inner end 8A of the baffle portion 8 in the lid region corresponding portion 5B, and forms portions at different positions in the vertical direction. In the example of FIGS. 1A and 1B, the height difference portion 9 is a step portion 90. The step portion 90 has a wall portion 90A extending upwardly or downwardly from the inner end of the baffle portion 8. The wall portion 90A has the inner end of the baffle portion 8 as the base end, and when the height difference portion 9 is the step portion 90, the other end (the opposite end side from the base end portion) of the wall portion 90A has the flat portion 11. It is connected to the outer edge portion 11A of. It is preferable that the baffle portion 8 and the height difference portion 9 are formed continuously. The angle between the wall portion 90A forming the step portion 90 and the baffle portion 8 in the direction in which the wall portion 90A extends with respect to the baffle portion 8 is not particularly limited, but is preferably about 30 degrees to 90 degrees. It is. In FIG. 1, etc., the angle in the direction in which the wall portion 90A extends with respect to the baffle portion 8 is the angle (angle α ), and it is preferable that the angle α is about 30 degrees to 90 degrees. Note that the boundary between the baffle portion 8 and the height difference portion 9 may be bent or smoothly curved.

(Plane part)
In the lid 1, in the example shown in FIG. 1, a flat portion 11 is formed inside the height difference portion 9 in the lid region corresponding portion 5B. However, this is just an example. In the example shown in FIG. 1, the plane portion 11 and the baffle portion 8 are located at different positions in the height direction, and the plane portion 11 is disposed at a higher position than the baffle portion 8.

In the example of FIG. 1, the entire outer periphery of the flat part 11 is connected to the wall part 90A, and the height difference part 9 is formed so as to surround the flat part 11 when the lid 1 is viewed from above.

(penetrating part)
A through portion 10 is formed inside and/or inside the height difference portion 9 in the lid region corresponding portion 5B. In the example of FIG. 1, the penetrating portion 10 is formed in a flat portion 11 formed inside the height difference portion 9. However, this is just an example, and the position of the penetrating portion 10 is not limited to this.

The penetrating portion 10 has a structure (a penetrating structure) cut in the vertical direction (thickness direction) from one surface to the other surface of the lid body 1 (from the exposed surface 72 to the opposing surface 73), and is a so-called notch. There is a department. The shape of the penetrating portion 10 is not particularly limited, and is formed in a cross shape in the example of FIG. 1, but these are only examples and do not limit the shape of the penetrating portion 10.

The penetrating portion 10 can function as an insertion port 12 into which a straw or the like is inserted from the outside.

In the lid body 1 shown in the example of FIG. 1A, the penetration part 10 and the baffle part 8 are located at different positions in the height direction, and the penetration part 10 is located at a higher position (+Z) than the baffle part 8. direction). That is, when the penetrating part 10 is formed in the flat part 11, the position of the penetrating part 10 is higher than the position of the baffling part 8, corresponding to the difference in the positions of the penetrating part 10 and the baffling part 8. It is located in Further, in this example, the height difference portion 9 is formed so as to surround the through portion 10 .

[1-2. Production method]
The manufacturing method for the lid 1 includes, for example, forming a sheet material (original sheet) made of a material corresponding to the material of the lid 1 into a blank material 30 formed by punching according to the shape of the lid 1. The lid body 1 can be manufactured through these steps. In this case, the paper-based material forming the lid 1 is partially stretched. In particular, in the lid 1, as shown in FIG. 18A, the density of the fibers constituting the paper-based material is lower in the boundary between the baffle part 8 and the height difference part 9, or in the area from the boundary toward the height difference part 9. 8 is formed. In the example of FIG. 18A, the low-density portion 13 is formed in a portion of the lid 1 surrounded by a broken line. In addition, by forming such a low-density portion 13, the cushioning properties of the low-density portion 13 can provide cushioning properties to the entire lid 1, and the container with lid 150 can be shaken in the vertical direction. Even if a force such as the above is applied and the content contacts (collides with) the baffle part 8 in the direction of arrow N as shown in FIG. 18B, it is considered that the collision force of the content can be alleviated.

Note that performing a shaping process on the blank material 30 is not limited to the case where the lid body 1 is formed only of the blank material 30, and the lid body 1 is formed by forming members such as the tab member 22 on the blank material 30. This shall include cases where the structure has a structure attached to it. An example of the shaping treatment is a process in which the blank material 30 is passed through an embossing roll to provide the blank material 30 with an uneven structure corresponding to the height difference portion 9 .

It is preferable that the raw sheet is composed of a fiber sheet 31 containing a paper-based material.

(Fiber sheet containing paper-based materials)
The fiber sheet 31 containing a paper-based material is a raw material sheet made of so-called paper, pulp-based fiber, etc., which is obtained by drawing a slurry of fiber raw materials onto a mesh, drying or pressing drying, and making paper into a sheet. Plant fibers and other fibers such as so-called air-laid sheets obtained by stacking spread fiber raw materials such as pulverized pulp obtained by crushing with a pulverizer using an air flow and fixing the fibers of the stack with a binder. Examples include so-called papers produced by sticking together. Further, fiber sheets containing paper-based materials include those having a laminated structure in which a plurality of sheets of paper as described above are laminated. In addition to paper-based materials, the fiber sheet 31 includes sheet materials having fibers other than pulp, such as chemical fibers, fibers with functions such as water resistance, metal fibers, and glass fibers.

The fiber sheet 31 may be composed of only the fibers 31A, or may have a structure in which a plurality of fibers 31A are crosslinked with a crosslinking agent, etc., and may contain other additives other than the resin material described below. But that's fine. In the fiber sheet 31, the plurality of fibers 31A are crosslinked with each other using a crosslinking agent, so that the shape of the fiber sheet 31 is stabilized and a defibrated state is less likely to be formed.

(fiber)
The fibers 31A constituting the fiber sheet 31 may be composed of one unit fiber, or may have a structure in which a plurality of unit fibers are intertwined, and the fibers 31A having either structure can be used in the fiber sheet 31. May be included in It is preferable that the fiber sheet 31 is formed by further intertwining a plurality of fibers having such a structure.

[1-3. Variant example]
(Modification 1)
In the lid 1 according to the first embodiment, the flat portion 11 may form an inclined surface portion 15 inside the height difference portion 9 in the lid region corresponding portion 5B, as shown in FIG. 5A. Further, as shown in FIG. 5B, in the lid 1 according to the first embodiment, instead of the flat part 11, a curved surface part 18 is formed inside the height difference part 9 in the lid area corresponding part 5B. Good too. This also applies to the second to fourth embodiments. In the example of FIG. 5B, it is bent at the boundary between the curved surface part 18 and the upper end of the height difference part 9 (the other end 97 of the wall part 90A), but this is just an example, and it may be curved smoothly.

(Modification 2)
In the lid 1 according to the first embodiment, the flat portion 11 may be omitted. Such an embodiment will be referred to as modification 2 of the first embodiment. As a second modification of the first embodiment, for example, with reference to FIG. 19B, a structure in which a stepped portion 90 is used instead of the groove portion 91 forming the height difference portion 9 in FIG. 19B can be exemplified.

[1-4. Action and effect]
In a container with a lid, if the lid has a penetration part and the content stored inside the container with a lid is liquid, suppress the risk of liquid leaking from the penetration part of the lid. You are requested to do so. In particular, when a container with a lid is formed by joining the lid to the container using a sealing method such as a heat sealing method, it is difficult to suppress the possibility of liquid leaking from the penetrating portion of the lid. requested. In other words, when the lid and the container are joined by the sealing method, the lid can be brought into close contact with the container in the joining area, so if the lid has a penetration part, the contents Since the exit of the liquid as a substance is likely to be limited to the penetration part, there is a possibility that the liquid is likely to collect and leak outside from the penetration part, and there is an increasing demand for suppressing leakage from the penetration part. For example, when a user shakes the container with a lid from side to side, the liquid within the container is shaken from side to side. As the liquid moves within the container, the surface of the liquid may ripple. If there is a gap between the lid and the gap, the liquid surface will ripple as it collides with the gap between the container and the lid, causing the liquid to leak from the gap and causing liquid waves (formed on the liquid surface). However, if the gap between the container and the lid is closed and a joint is formed, the liquid waves collide with the joint between the container and the lid and are reflected at the free end, causing the reflection to collapse. A wave of liquid can travel away from the joint. When a liquid wave and a reflected liquid wave resonate, the wave may have a relatively large amplitude. If the amplitude of the liquid wave is maintained, there is a possibility that the crest of the liquid wave will reach the penetration and the liquid will leak out from the penetration.

When the lid body is made of a paper-based material, in addition to the problem of liquid leaking to the outside from the penetration part of the lid body, there is also the problem of liquid that comes into contact with the penetration part seeping into the paper-based material. there is a possibility. Therefore, when the lid is made of a paper-based material, the contents may pass through the opening of the lid through the through-hole when the lid covers the opening of the container (i.e., the container has a lid). It is required to prevent the material from protruding toward the exposed surface side.

In this respect, since the lid 1 according to the first embodiment has the baffle part 8 and the height difference part 9, when the size of the liquid wave further increases, the baffle part 8 and the height difference part 9 are formed. The liquid can impinge near the boundary of the portion 9. In the lid body 1, there is a height difference between the baffle part 8 and the height difference part 9, so when a liquid wave collides near the boundary between the baffle part 8 and the height difference part 9, the liquid wave advances with various phases. It is thought that a state in which directional waves are synthesized is likely to occur, and the waves of the liquid are likely to be canceled out, making it easier to suppress leakage of the liquid from the penetrating portion 10.

[2 Second embodiment]
[2-1. structure]
In the first embodiment, as shown in FIGS. 2A and 2B, the height difference portion 9 may have a groove portion 91 (referred to as a second embodiment). FIG. 2A is a plan view schematically showing an example of the lid body 1 according to the second embodiment. FIG. 2B is a cross-sectional view schematically showing an example of a vertical cross-section taken along line BB in FIG. 2A. In the lid 1 of the second embodiment, the height difference portion 9 has an outer wall 91A and an inner wall 91B that constitute a groove portion 91 as a wall portion 90A. The step portion 90 corresponds to the side wall (outside wall 91A) of the groove portion 91 that connects to the baffle portion 8, and the step portion 90 forms a part of the groove portion 91. The wall portion of the stepped portion 90 in the first embodiment is an outer wall 91A.

In the example of FIG. 2A, the upper end of the side wall (inner wall 91B) located on the inner side (near the center of the lid area corresponding part 5B) among the side walls forming the groove part 91 is connected to the outer peripheral edge of the flat part 11. ing. The height difference portion 9 forms a difference in position between the bottom surface (bottom portion 91C) of the groove portion 91 and the baffle portion 8 in the height direction (Z-axis direction). In the example of FIG. 2A, the height difference portion 9 also forms a difference in position in the height direction between the bottom portion 91C of the groove portion 91 and the upper end of the inner wall 91B. With the formation of such groove portion 91, a difference in position in the height direction is created between flat portion 11 and baffle portion 8. In the groove portion 91, the outer wall portion (outer wall 91A) and the inner wall portion (inner wall 91B) have different heights (the size of the difference in position in the height direction from the lower end to the upper end), and the outer wall portion (outer wall 91A) Although the height of the inner wall portion (inner wall 91B) is greater than the height of the inner wall 91B, this is just an example.

Moreover, the groove part 91 is formed over the entire circumference of the inner edge of the baffle part 8, and is formed in an annular shape.

The lid 1 according to the second embodiment can be manufactured using the same method as the first embodiment. Moreover, the lid body 1 according to the second embodiment can obtain the same effects as the first embodiment. In addition, since the lid 1 according to the second embodiment has the groove 91 so that the bottom 91C is formed below the baffle part 8, the efficiency of suppressing liquid waves by the groove 91 can be increased. I can do it.

[2-2. Variant example]
(Modification 1)
In the lid body 1 according to the second embodiment described above, the groove portion 91 is formed in a shape such that a bottom surface 98 is formed in the bottom portion 91C, but the shape is not limited to this, and as shown in FIGS. 3A and 3B. As shown, the groove portion 91 may be formed in such a shape as to form a top portion 99 that protrudes downward (in the -Z direction). Such a configuration will be referred to as modification 1 of the second embodiment. FIGS. 3A and 3B are diagrams showing an example of a lid body according to Modification 1 of the second embodiment. In the example of FIG. 3A, the top portion 99 is formed on the entire bottom portion 91C of the groove portion 91, but this is just an example and may be formed on a portion of the bottom portion 91C.

(Modification 2)
In the lid 1 according to the second embodiment, the position of the plane part 11 is not limited to being located above the baffle part 8 in the height direction, but as shown in FIG. The portion 11 and the baffle portion 8 may be at the same position in the height direction. In this case, if the penetration part 10 is formed in the plane part 11, the position of the penetration part 10 will be the same position as the baffle part 8 in the height direction. Further, as shown in FIG. 4B, the plane portion 11 may be located lower than the baffle portion 8 in the height direction. In this case, if the penetrating portion 10 is formed in the plane portion 11, the penetrating portion 10 is located lower than the baffle portion 8 in the height direction.

(Modification 3)
In the lid body 1 according to the second embodiment, as shown in FIGS. 6A and 6B, the groove portion 91 has a crank-shaped step (side wall inner step portion 14) between the lower end and the upper end of the inner wall 91B. may be formed. Such a configuration will be referred to as modification 3 of the second embodiment. 6A and 6B are diagrams showing an example of a lid body according to a third modification of the second embodiment. In the example of FIG. 6B, the position where the step is formed in the side wall inner step part 14 is the same in the height direction as the position of the baffle part 8, and the lid 1 is This is an example of a configuration similar to that in which a groove is formed outside the side wall inner step portion 14. For example, regarding the side wall inner step portion 14, the step may be formed at a higher position than the position of the baffle portion 8 in the height direction, or may be formed at a lower position. In the lid 1 according to the second embodiment, when the side wall inner stepped portion 14 is formed, when the content contained in the lidded container 150 is liquid, waves of liquid are formed on the inner wall 91B. It is considered that the wave becomes even more likely to be broken when it collides with the position of the side wall inner step portion 14 in .

(Modification 4)
In the lid 1 according to the second embodiment, the height difference portion 9 may have a plurality of grooves 91, as shown in FIGS. 7A and 7B. Such a configuration will be referred to as modification 4 of the second embodiment. 7A and 7B are diagrams showing an example of a lid body according to a fourth modification of the second embodiment. In the example of FIG. 7A, the bottom portions 91C of the plurality of groove portions 91 are arranged concentrically. In this case, the outer wall 91A is connected to the baffle part 8 at the outermost groove part 91. Regarding the groove portions 91 that are adjacent to each other in the inner and outer directions, an outer wall 91A of the groove portion 91 provided on the inner side is connected to an inner wall 91B provided on the outer side. Moreover, the inner wall 91B is connected to the flat part 11 at the innermost groove part 91. In the example of FIG. 7A, two grooves 91 are formed, but three or more grooves 91 may be formed.

In the lid 1 according to the second embodiment, when a plurality of grooves 91 are formed, when the content contained in the lidded container 150 is liquid, waves of liquid form the grooves 91. The waves are more likely to collide near the boundary between the inner wall and the bottom and the outer wall and the bottom, and the waves are more likely to collide near the boundary between the baffle part 8 and the outer wall. It is thought that it will be easily broken.

(Modification 5)
In the lid 1 according to the second embodiment, as shown in FIGS. 8A, 8B, and 8C, an uneven structure that forms unevenness in the groove portion 91 may be formed. Such a configuration will be referred to as modification 5 of the second embodiment. 8A, FIG. 8B, and FIG. 8C are diagrams showing an example of a lid body according to modification example 5 of the second embodiment. Incidentally, the unevenness referred to here refers to a portion of the lid 1 that protrudes largely in terms of the size of the protrusion on the side of the contact surface with the container 101 (on the opposing surface 73 side) (the portion that protrudes in the −Z direction in FIG. 8B). (first portion 92) and a portion having a smaller degree of protrusion than the first portion 92 (a portion protruding in the −Z direction in FIG. 8B) (second portion 93) are present. In the example shown in FIG. 8B, the first portion 92 has a bottom portion 91C of the groove portion 91 forming a top portion 99, and in the example shown in FIG. 8C, the second portion 93 is formed at four locations. , a bottom 91C of the groove 91 forms a bottom surface 98. The first portion 92 and the second portion 93 may have different shapes as described above, but either may have a top portion 99 or may have a bottom surface 98. As shown in FIGS. 8B and 8C, when the first portion 92 and the second portion 93 have different shapes (top 99, bottom 98), the contents contained in the lidded container 150 It is thought that when the object is liquid, liquid waves are more likely to be broken.

Note that in Modification 5, the second portion 93 may be omitted as shown in FIG. 8D. In this case, the groove portion 91 is discontinuously formed along the inner peripheral edge (inner end 8A) of the baffle portion 8.

(Modification 6)
In the example of the lid body 1 according to the second embodiment, as shown in FIGS. 10A, 10B, and 10C, the width of the groove portion 91 may be partially different in a plan view of the lid region corresponding portion 5B. . Such a configuration will be referred to as modification 6 of the second embodiment. 10A, FIG. 10B, and FIG. 10C are diagrams showing an example of a lid body according to modification 6 of the second embodiment. Here, the width of the groove 91 refers to the width at the upper end position of the portion of the groove 91 where the outer wall 91A and the inner wall 91B face each other when the horizontal direction is the viewing direction. In the groove portion 91 shown in FIG. 10A, a thick portion 94 and a narrow width portion 95 are formed. The width WA of the thick portion 94 is larger than the width WB of the width detail 95. In the wide portion 94, as shown in FIG. 10A, the outer wall 91A and the inner wall 91B are curved in a concave shape when the lid 1 is viewed from above. Therefore, when viewed from the contact surface (facing surface 73) of the lid 1 with the container 101, in the wide portion 94, the outer wall 91A and the inner wall 91B have a convex shape.

(Modification 7)
In the example of the lid 1 according to the second embodiment, as shown in FIGS. 11A and 11B, at least a portion of the wall portion 90A in the height difference portion 9 may have a wavy shape. Such a configuration will be referred to as modification 7 of the second embodiment. FIGS. 11A and 11B are diagrams showing an example of a lid body according to modification 7 of the second embodiment. In the example of FIG. 11A, the inner wall 91B of the groove portion 91 is shaped into a wave shape. It is possible to suppress the possibility that wrinkles will occur in the blank material 30 due to dimensional changes in the paper material due to stretching of the paper material when the blank material 30 is subjected to shaping processing during manufacturing of the lid body 1. Further, in the case where the inner wall 91B of the groove portion 91 is shaped into a wave shape, when the contents contained in the lidded container 150 are liquid, the waves of the liquid are more likely to be broken. considered to be a thing.

(Modification 8)
In the example of the lid body 1 according to the second embodiment, as shown in FIG. 2 etc., the penetration part 10 is not limited to being formed in a cross shape as the insertion port 12, but for example, as shown in FIG. 13A. Alternatively, the penetrating portion 10 may be formed in a C-shape. This also applies to the first embodiment. Note that in FIG. 13A, for convenience of explanation, the groove portion 91 is not shown.

(Modification 9)
In the example of the lid body 1 according to the second embodiment, as shown in FIG. Good too. That is, in the lid 1, the weakened portion 16 may be provided in the lid region corresponding portion 5B to guide the dividing position in the lid region corresponding portion 5B. The weakened portion 16 may include a plurality of penetration portions 10 and at least one continuous portion 17 formed between at least two penetration portions 10. In the example of FIG. 12, the weakened portion 16 forms a plurality of through portions 10 radially around the continuous portion 17. This also applies to the first embodiment. In addition, in FIG. 12, the description of the groove portion 91 is omitted for convenience of explanation.

The example of the lid body 1 according to modification 9 of the second embodiment can also be applied when the insertion opening 12 is different from the cross shape, for example, when the insertion opening 12 is formed in a C-shape. In this case, as shown in FIG. 13B, the weakened portion 16 has a structure in which a penetration portion 10 and a continuous portion 17 are arranged along a C-shape. Note that in FIG. 13B, for convenience of explanation, the groove portion 91 is not shown.

(Modification 10)
In the lid 1 according to the second embodiment, at least a portion of the groove 91 may be formed with a curved surface, as shown in FIG. 19A. Such an embodiment will be referred to as modification 2 of the first embodiment. FIG. 19A is a sectional view showing an example of the lid 1 according to Modification 10 of the second embodiment. In the example of FIG. 19A, both the outer wall 91A and the inner wall 91B forming the groove portion 91 have curved surfaces. However, this is an example, and in the case where the lid 1 according to the tenth modification of the second embodiment has a curved surface on at least one of the outer wall 91A and the inner wall 91B that constitute the groove part 91. is included.

(Modification 11)
In the lid 1 according to the second embodiment, the flat portion 11 may be omitted, as shown in FIG. 19B. Such an embodiment will be referred to as modification 11 of the first embodiment. FIG. 19A is a sectional view showing an example of the lid 1 according to Modification 10 of the second embodiment. In the example of FIG. 19B, the inner wall 91B forming the groove 91 continues to extend toward the inside of the lid 1. In the example shown in FIG. Note that in the drawing of FIG. 19B, the height difference portion 9 is shown to be separated outward from the center of the penetrating portion 10, but this does not mean that the center of the lid body 1 is It is not prohibited to be included in the height difference section 9. That is, in the lid 1, the height difference part 9 may include the height difference part 9 up to the center of the lid 1, and the entire inner part from the outer wall 91A of the groove part 91 may form the height difference part 9. This is not limited to the second embodiment, and the same applies to other embodiments such as the first embodiment.

Further, the lid 1 according to the eleventh modification of the second embodiment may be combined with the tenth modification of the second embodiment described above, as shown in FIG. 19C. In the example of FIG. 19C, the entire height difference portion 9 is formed of a curved surface. This example has a structure in which the inner wall 91B forms a bell-shaped portion, and the outer wall 91A is curved outward from the outer periphery of the bell-shaped portion to form the groove portion 91. are doing.

[3 Third embodiment]
[3-1. structure]
In the first embodiment or the second embodiment, the lid body 1 is not limited to the case where the penetration part 10 forms the insertion port 12. As shown in FIGS. 14A and 14B, the lid area corresponding part A penetrating portion 10 may be formed in 5B (third embodiment). In the third embodiment, the lid region corresponding portion 5B includes a base portion 2 having a small opening 6 having an opening area smaller than the opening 102 of the container 101, and a small lid portion 3 that opens and closes the small opening 6. and a hinge part 4 connecting the base part 2 and the small lid part 3, the small lid part 3 is configured to be rotatable with respect to the base part 2 about the hinge part 4, and at least partially A penetrating portion 10 is formed at the boundary between the outer peripheral edge 3A of the small lid portion 3 and the opening edge 6A of the small opening 6. Such a penetrating portion 10 may be used in combination with a penetrating portion (another penetrating portion) configured to function as an insertion port 12.

In FIG. 14A, the base portion 2 is comprised of the portion of the lid 1 excluding the small lid portion 3. In FIG. The base portion 2 is composed of a portion including the lid region corresponding portion 5B excluding the small lid portion 3 and an outer region corresponding portion 5C. The small lid part 3 may have a structure in which a member different from the base part 2 is connected by the hinge part 4, but as shown in the example of FIG. may be formed. However, the term "continuous and integral" includes the case where there is even a slight continuous portion of the small lid part 3 and the base part 2, and includes the case where the small lid part 3 and the base part 2 are partially cut off at the hinge part 4. 14A and 14B are a plan view and a cross-sectional view (a longitudinal cross-sectional view taken along the line KK in FIG. 14A) showing an example of the lid according to the third embodiment. Note that FIG. 14A shows an example in which a base portion 2, a small lid portion 3, a small opening portion 6, and a hinge portion 4 are provided in the lid body 1 according to the second embodiment.

In the example of FIG. 14A, the penetrating portion 10 is formed at or near the upper end of the inner wall 91B (at or near the boundary between the inner wall 91B and the plane portion 11), and in this case, the penetrating portion 10 is generally formed in height. Formed near the end of the difference part 9 (the part of the other end 97 relative to the base end 96) (at a position closer to the other end 97 than the center CT (corresponding to the center of the lid region corresponding part 5B in FIG. 1 etc.)) has been done. With the penetrating portion 10 formed in this manner, the small opening 6 can be opened by pulling up the small lid portion 3 upward (in the direction of arrow F in FIG. 14B). However, this is just an example, and a portion of the penetrating portion 10 may extend into the inner wall 91B. In this case, when the small lid part 3 is pulled up, the small opening part 6 is formed into a part of the inner wall 91B.

[3-2. Variant example]
(Modification 1)
In the lid 1 of the second embodiment, the boundary position between the outer peripheral edge 3A of the small lid part 3 and the opening edge 6A of the small opening 6 is not formed inside and/or inside the height difference part 9. It's okay. For example, as shown in FIG. 15A, the boundary position between the outer peripheral edge of the small lid and the opening edge of the small opening (more specifically, the boundary between the outer peripheral edge of the small lid and the opening edge of the small opening) A position scheduled to be a boundary position) may be defined in the baffle part. However, in this case, it is preferable that the penetrating portion 10 is not formed at the boundary between the outer peripheral edge of the small lid and the opening edge of the small opening. In the example of FIG. 15, a half-cut portion is formed at the boundary between the outer peripheral edge of the small lid and the opening edge of the small opening, as shown in FIG. 15B. By forming the half-cut portion 19 in this way, when the small lid portion 3 is not lifted (when not in use) in the state of the container with lid body 150, the baffle portion 8 is moved to the lid region corresponding portion. A state in which no hole or slit-like structure is formed can be formed from the peripheral edge 74 of the baffle portion 5B to the inner end 8A of the baffle portion. In addition, if the small lid part 3 is lifted in the state of the container with lid body 150, the half-cut part 19 will be destroyed and the small opening part 6 will be opened (the outer periphery 3A of the small lid part 3 and The opening edge 6A of the small opening 6 is separated, and the outer peripheral edge 3A and the opening edge 6A are formed), and the contents stored inside the lidded container 150 through the small opening 6. You can take things out. Furthermore, in the case of the example shown in FIG. 15A, the penetrating portion 10 is formed in a portion that will become the insertion port 12 (only other penetrating portions are formed). Note that FIGS. 15A and 15B illustrate an example in which a base portion 2, a small lid portion 3, a small opening portion 6, and a hinge portion 4 are provided in the lid body 1 according to the first embodiment.

(Modification 2)
In the lid 1 of the second embodiment, a knob 21 may be provided on the upper surface side of the small lid 3, as shown in FIGS. 16A and 16B. In the example of FIGS. 16A and 16B, when the small opening 6 is closed with the small lid 3, the knob 21 is located on the upper surface side of the exposed surface of the small lid 3 (the exposed surface 72 of the lid 1). It is provided. The structure of the knob 21 is not particularly limited as long as the small lid 3 can be rotated about the hinge 4, but in the examples shown in FIGS. 16A and 16B, the tab member 22 is used as the knob 21. It is provided. The examples shown in FIGS. 16A and 16B are based on the example shown in FIG. 15A in which a knob 21 is provided.

Examples of methods for joining the tab member 22 to the small lid part 3 include various methods such as ultrasonic joining, heat sealing, and joining using adhesives. Ultrasonic bonding is preferable from the viewpoint of strength and the like. The joining position of the tab member 22 and the small lid part 3 in the small lid part 3 is a position where the small lid part 3 can be raised (rotated) by lifting the tab member 22. Not particularly limited.

[4 Fourth embodiment]
[4-1. structure]
In the first embodiment, when the height difference part 9 is a step part 90, as shown in FIG. ), the case where the other end 97 is at a lower position in the height direction is not excluded. In the example of FIG. 9, the other end 97 of the height difference portion 9 is connected to the flat portion 11, and the through portion 10 is formed in the flat portion 11. In this case as well, a low-density portion 13 is formed in a portion from the boundary between the baffle portion 8 and the height difference portion 9 toward the height difference portion 9, where the density of fibers constituting the paper-based material is lower than that of the baffle portion 8. . However, from the viewpoint of the position of the penetration part 10 and the position of the baffle part 8 in the height direction, the example of FIG. 1 of the first embodiment is more preferable than the example of FIG. 9 of the fourth embodiment.

[5 Application examples]
The lid 1 according to the first embodiment can be used for a container with a lid 150 as shown in FIGS. 17A and 17B. FIG. 17A is a perspective view showing an example in which the lid 1 according to the first embodiment is joined to an edge 103 forming the outer periphery of the opening 102 of a container 101 having an opening 102 formed at the upper end. It is. FIG. 17B is a cross-sectional view schematically showing the state of the longitudinal cross-section along the line in FIG. 17A. The description of the lidded container 150 will be continued using FIGS. 17A and 17B.

(container with lid)
The container with a lid 150 has a joint 151 where the container 101 and the lid 1 are joined, and the region of the lid 1 that forms the joint 151 is the joint region R. The method of joining the lid 1 and the container 101 is not particularly limited, and a joining method such as a pressure bonding method or a heat sealing method can be used as appropriate. Below, the case where the lid 1 according to the first embodiment is used in a container with a lid 150 will be described as an example.

The container 101 includes a container main body 110 having a cylindrical side wall 104 whose diameter increases upwardly (tapering downwardly) and a bottom portion 107 and forms a space 105 therein; It has an opening 102 opened at the upper end of the container body 110 (the upper end of the side wall 104). Although not shown, the opening 102 of the container 101 is formed in a circular shape. However, the container 101 shown here is an example, and the configuration of the container 101 is not limited. For example, the opening 102 of the container 101 may be formed into a rectangular shape. The container 101 may be of any type as long as the opening 102 can be covered with the lid 1. Moreover, what is stored inside the container 101 (the space 105) is not particularly limited, and may be, for example, a liquid, a solid, or a combination thereof.

In the container 101 shown in FIG. 17A and the like, the edge 103 of the opening 102 has a flange. The flange portion may be a curl portion 108 formed by winding the member forming the container body 110 outward, or may be formed as a portion (flange portion) extending outward on a plane.

Further, the lid 1 according to the first embodiment may be combined with a container 101 having an opening 102.

What is shown in [5 Application Example] above is not limited to the case where the lid body 1 according to the first embodiment is used. The second to third embodiments can also be used for a container 150 with a lid joined to the container 101, similarly to the lid 1 according to the first embodiment (not shown).

As described above, the lid 1 according to the present invention can be applied to many types of the lid 1 as described above. Further, it is also possible to apply the present invention to the lid body 1 in other modes than those described above. Although the lid according to the present invention has been described in detail above, the lid according to the present invention is merely exemplified and is not limited thereto. Therefore, changes may be made as appropriate without departing from the spirit of the invention. Moreover, the structure of the above-described cover body may be applied by using the structure of the cover body of each example independently, or by appropriately combining the structure of the cover body of each example.

Based on the above description of this specification, the present invention may adopt the following configurations [E1] to [E25].
[E1]
formed to be able to be joined to a container having an opening formed at an upper end and an edge forming an outer periphery of the opening;
a joining region corresponding portion corresponding to a region joined to the container along the edge of the container;
and a lid region corresponding portion comprising a portion inside from the joint region corresponding portion,
The lid area corresponding part has a baffle part inside from the peripheral edge of the lid area corresponding part, and has a height difference part and a penetration part in at least a part of the inside from the inner edge of the baffle part.
Lid body.
[E2]
In the lid region corresponding portion, the penetration portion is formed inside and/or inside the height difference portion.
The lid described in [E1] above.
[E3]
The penetration part and the baffle part are at different positions in the height direction,
The lid described in [E1] or [E2] above.
[E4]
The height difference part is formed to surround the through part,
The lid according to any one of [E1] to [E3] above.
[E5]
A plane part is formed inside the height difference part,
The lid according to any one of [E1] to [E4] above.
[E6]
The plane part and the baffle part are at different positions in the height direction,
The lid described in [E5] above.
[E7]
The penetration part and the baffle part are at the same position in the height direction,
The lid according to any one of [E1] to [E6] above.
[E8]
a sloped portion is formed inside the height difference portion;
The lid according to any one of [E1] to [E7] above.
[E9]
At least a portion of the wall portion in the height difference portion has a wavy shape;
The lid according to any one of [E1] to [E8] above.
[E10]
The height difference part has a plurality of groove parts,
The bottoms of the plurality of grooves are arranged concentrically,
The lid according to any one of [E1] to [E9] above.
[E11]
The height difference part has a groove part,
an uneven structure is formed in the groove portion;
The lid according to any one of [E1] to [E10] above.
[E12]
The height difference part has a groove part,
In a plan view of the lid region corresponding portion, the width of the groove portion is partially different;
The lid according to any one of [E1] to [E11] above.
[E13]
The height difference part has a step part,
The lid according to any one of [E1] to [E12] above.
[E14]
The step portion forms a groove portion.
The lid described in [E13] above.
[E15]
The lid area corresponding part is provided with a weakened part that guides the dividing position in the lid area corresponding part,
The weakened portion includes a plurality of the penetration portions and at least one continuous portion formed between at least two of the penetration portions.
The lid according to any one of [E1] to [E14] above.
[E16]
The weakened portion forms a plurality of the through portions radially around the continuous portion,
The lid described in [E15] above.
[E17]
The lid area corresponding portion includes a base portion having a small opening having an opening area smaller than the opening of the container, a small lid portion that opens and closes the small opening, and the base portion and the small lid portion. Equipped with a hinge part that connects the
The small lid part is configured to be rotatable with respect to the base part about the hinge part,
at least a portion of the penetrating portion is formed at a boundary position between the outer peripheral edge of the small lid portion and the opening edge of the small opening;
The lid according to any one of [E1] to [E16] above.
[E18]
at least a portion of the penetrating portion is formed in the height difference portion;
The lid described in [E17] above.
[E19]
a knob is provided on the upper surface side of the small lid;
The lid according to [E17] or [E18] above.
[E20]
The knob has a tab member,
The tab member is joined to the upper surface side of the small lid part.
The lid described in [E19] above.
[E21]
Made of paper-based material,
The lid according to any one of [E1] to [E20] above.
[E22]
A low-density part is formed in a portion from the boundary between the baffle part and the height difference part toward the height difference part, where the density of fibers constituting the paper-based material is lower than that of the baffle part.
The lid described in [E21] above.
[E23]
The baffle portion and the height difference portion are continuously formed;
The lid according to any one of [E1] to [E22] above.
[E24]
The lid body according to any one of [E1] to [E23] above,
the container having the opening formed in the top end;
the lid body is joined to the container;
Container with lid.
[E25]
The lid body according to any one of [E1] to [E23] above,
the container having the opening formed in the top end;
Combination of lid and container.

1 : Lid body 2 : Base part 3 : Small lid part 3A : Outer periphery 4 : Hinge part 5A : Joint area corresponding part 5B : Lid area corresponding part 5C : Outer area corresponding part 6 : Small opening part 6A : Opening edge 8 : Obstruction portion 8A: Inner end 9: Height difference portion 10: Penetrating portion 11: Plane portion 11A: Outer edge portion 12: Inlet 13: Low density portion 14: Side wall inner step portion 15: Inclined surface portion 16: Weakened portion 17: Continuous Part 21 : Knob part 22 : Tab member 30 : Blank material 31 : Fiber sheet 31A : Fiber 72 : Exposed surface 73 : Opposing surface 74 : Outer periphery 90 : Step part 90A : Wall part 91 : Groove part 91A : Outer wall 91B : Inside Wall 91C : Bottom part 92 : First part 93 : Second part 94 : Thick part 95 : Width detail 101 : Container 102 : Opening part 103 : Edge part 104 : Side wall 105 : Space part 107 : Bottom part 108 : Curled part 110 : Container body 150 : Container with lid 151 : Joint part N : Arrow R : Joint area

(1) Formed so as to be joined to a container having an opening formed at the upper end and an edge forming the outer periphery of the opening, and corresponding to an area along the edge of the container to be joined to the container. and a lid area corresponding part that is formed from a portion inside the joint area corresponding part, and the lid area corresponding part is configured to extend from at least a part of the peripheral edge of the lid area corresponding part. It has a baffle part formed as a part extending inward, and has a height difference part and a structure penetrated in the thickness direction from the inner edge of the baffle part to at least a part of the inner side, and has a structure that penetrates in the thickness direction. A lid body having a penetrating portion whose surfaces face each other .
(2) The lid according to (1) above, wherein the lid region corresponding portion has the through portion formed inside and/or inside the height difference portion.
(3) The lid according to (1) above, wherein the penetration part and the baffle part are at different positions in the height direction.
(4) The lid according to (1) above, wherein the height difference portion is formed so as to surround the periphery of the penetration portion.
(5) The lid according to (1) above, wherein a flat part is formed inside the height difference part.
(6) The lid according to (5), wherein the plane portion and the baffle portion are at different positions in the height direction.
(7) The lid according to (1) above, wherein the penetration part and the baffle part are at the same heightwise position.
(8) The lid according to (1) above, wherein an inclined portion is formed inside the height difference portion.
(9) The lid according to (1) above, wherein at least a portion of the wall portion in the height difference portion has a wavy shape.
(10) The lid according to (1), wherein the height difference portion has a plurality of grooves, and the bottoms of the plurality of grooves are arranged concentrically.
(11) The lid according to (1) above, wherein the height difference portion has a groove, and an uneven structure is formed in the groove.
(12) The lid body according to (1), wherein the height difference portion has a groove portion, and the width of the groove portion is partially different in a plan view of the lid region corresponding portion.
(13) The lid according to (1) above, wherein the height difference portion has a step portion.
(14) The lid according to (13) above, wherein the stepped portion forms a groove.
(15) The lid area corresponding part is provided with a weakened part that guides the dividing position in the lid area corresponding part, and the weakened part includes a plurality of the through parts and at least two of the through parts. and at least one continuous portion formed between the lids according to (1) above.
(16) The lid according to (15), wherein the weakened portion has a plurality of through portions formed radially around the continuous portion.
(17) The lid according to (1) above, which is made of a paper-based material.
(18) A low-density part is formed in a portion from the boundary between the baffle part and the height difference part toward the height difference part, where the density of fibers constituting the paper-based material is lower than that of the baffle part. The lid described in (17) above.
(19) The lid according to (1) above, wherein the obstructing portion and the height difference portion are continuously formed.
(20) The lid according to any one of (1) to (19) above, and the container having the opening formed at the upper end, the lid being joined to the container. , a container with a lid.
(21) A combination of a lid and a container, comprising the lid according to any one of (1) to (19) above, and the container having the opening formed at the upper end.

The gist of the present invention is the inventions according to the following (1) to ( 20 ).

(1) formed to be able to be joined to a container having an opening formed at an upper end and an edge forming an outer periphery of the opening;
a joint region corresponding portion corresponding to a region joined to the container along the edge of the container, and a lid region corresponding portion comprising a portion inside from the joint region corresponding portion ,
The lid area corresponding part has a baffle part formed as a part extending inward from the peripheral edge of the lid area corresponding part, and has a height difference in at least a part of the inner side from the inner edge of the baffle part. and a penetrating portion having a structure that is penetrated in the thickness direction, and whose surfaces in the thickness direction face each other,
The baffle part extends inward from the entire circumference of the peripheral edge of the lid area corresponding part,
The obstructing portion and the height difference portion are formed so as to be spaced apart from the edge of the container in a state where the joining region corresponding portion is joined to the container,
The height difference portion has a groove portion with a convex surface facing the container in the lid region corresponding portion,
The groove portion has an inner wall portion formed near the center of the lid region corresponding portion and an outer wall portion connected to the baffle portion, and is formed in an annular shape over the entire circumference of the inner edge of the baffle portion,
The heightwise position of the top end of the outer wall portion is different from the heightwise position of the top end of the inner wall portion;
Lid body.
(2) The lid according to (1) above, wherein the lid region corresponding portion has the through portion formed inside and/or inside the height difference portion.
(3) The lid according to (1) above, wherein the penetration part and the baffle part are at different positions in the height direction.
(4) The lid according to (1) above, wherein the height difference portion is formed so as to surround the periphery of the penetration portion.
(5) The lid according to (1) above, wherein a flat part is formed inside the height difference part.
(6) The lid according to (5), wherein the plane portion and the baffle portion are at different positions in the height direction.
(7) The lid according to (1) above, wherein the penetration part and the baffle part are at the same heightwise position.
(8) The lid according to (1) above, wherein an inclined portion is formed inside the height difference portion.
(9) The lid according to (1) above, wherein at least a portion of the wall portion in the height difference portion has a wavy shape.
(10) The lid according to (1), wherein the height difference portion has a plurality of grooves, and the bottoms of the plurality of grooves are arranged concentrically.
(11) The lid body according to (1) above, wherein an uneven structure is formed in the groove portion.
(12) The lid body according to (1) above, wherein the width of the groove portion is partially different in a plan view of the lid region corresponding portion.
(13) The lid body according to (1) above, wherein the inner wall portion has a crank-shaped step .
(14) The lid according to (1) above, wherein the height difference portion is entirely formed of a curved surface.
(15) The lid area corresponding part is provided with a weakened part that guides the dividing position in the lid area corresponding part, and the weakened part includes a plurality of the through parts and at least two of the through parts. and at least one continuous portion formed between the lids according to (1) above.
(16) The lid according to (15), wherein the weakened portion has a plurality of through portions formed radially around the continuous portion.
(17) The lid according to (1) above, which is made of a paper-based material.
(18) A low-density part is formed in a portion from the boundary between the baffle part and the height difference part toward the height difference part, where the density of fibers constituting the paper-based material is lower than that of the baffle part. The lid body according to ( 17 ) above.
( 19 ) A container comprising the lid according to any one of (1) to ( 18 ) above and the container having the opening formed at the upper end, the lid being joined to the container. , a container with a lid.
( 20 ) A combination of a lid and a container, comprising the lid according to any one of (1) to ( 18 ) above, and the container having the opening formed at the upper end.

The gist of the present invention is the inventions according to the following (1) to (19) .

(1) It is formed so as to be able to be joined to a container having an opening formed at an upper end and an edge forming an outer periphery of the opening, is made of a paper-based material, and is formed along the edge of the container. It has a joining area corresponding part corresponding to a region to be joined to the container, and a lid area corresponding part formed of a part inside from the joining area corresponding part, and the lid area corresponding part is a part corresponding to the lid area. It has a baffle part formed as a part extending inward from the peripheral edge of the baffle part, and has a height difference part and a structure penetrated in the thickness direction at least in a part inside from the inner edge of the baffle part. and a penetration part whose surfaces in the thickness direction face each other, the baffle part extends inward from the entire circumference of the peripheral edge of the lid region corresponding part, and the baffle part and the height difference part are In a state where the joint region corresponding part is joined to the container, the part is spaced from the edge of the container to a position where the contents reflected from the free end can enter when the container contains contents. The height difference portion has a groove portion having a convex surface facing the container in the lid region corresponding portion, and the groove portion is formed near the center of the lid region corresponding portion. an inner wall portion formed therein, and an outer wall portion connected to the baffle portion, which is formed in an annular shape along the entire circumference of the inner edge of the baffle portion, and a position in the height direction of an upper end of the outer wall portion; A lid body in which the position of the upper end of the inner wall portion in the height direction is different.
(2) The lid according to (1) above, wherein the lid region corresponding portion has the through portion formed inside and/or inside the height difference portion.
(3) The lid according to (1) above, wherein the penetration part and the baffle part are at different positions in the height direction.
(4) The lid according to (1) above, wherein the height difference portion is formed so as to surround the periphery of the penetration portion.
(5) The lid according to (1) above, wherein a flat part is formed inside the height difference part.
(6) The lid according to (5), wherein the plane portion and the baffle portion are at different positions in the height direction.
(7) The lid according to (1) above, wherein the penetration part and the baffle part are at the same heightwise position.
(8) The lid according to (1) above, wherein an inclined portion is formed inside the height difference portion.
(9) The lid according to (1) above, wherein at least a portion of the wall portion in the height difference portion has a wavy shape.
(10) The lid according to (1), wherein the height difference portion has a plurality of grooves, and the bottoms of the plurality of grooves are arranged concentrically.
(11) The lid body according to (1) above, wherein an uneven structure is formed in the groove portion.
(12) The lid body according to (1) above, wherein the width of the groove portion is partially different in a plan view of the lid region corresponding portion.
(13) The lid body according to (1) above, wherein the inner wall portion has a crank-shaped step.
(14) The lid according to (1) above, wherein the height difference portion is entirely formed of a curved surface.
(15) The lid area corresponding part is provided with a weakened part that guides the dividing position in the lid area corresponding part, and the weakened part includes a plurality of the through parts and at least two of the through parts. and at least one continuous portion formed between the lids according to (1) above.
(16) The lid according to (15), wherein the weakened portion has a plurality of through portions formed radially around the continuous portion.
(17) A low-density part is formed in a portion from the boundary between the baffle part and the height difference part toward the height difference part, where the density of fibers constituting the paper-based material is lower than that of the baffle part. The lid described in (1) above.
(18) The lid according to any one of (1) to (17) above, and the container having the opening formed at the upper end, the lid being joined to the container. , a container with a lid.
(19) A combination of a lid and a container, comprising the lid according to any one of (1) to (17) above, and the container having the opening formed at the upper end.

Claims (25)

formed to be able to be joined to a container having an opening formed at an upper end and an edge forming an outer periphery of the opening;
a joining region corresponding portion corresponding to a region joined to the container along the edge of the container;
and a lid region corresponding portion comprising a portion inside from the joint region corresponding portion,
The lid area corresponding part has a baffle part inside from the peripheral edge of the lid area corresponding part, and has a height difference part and a penetration part in at least a part of the inside from the inner edge of the baffle part.
Lid body. In the lid region corresponding portion, the penetration portion is formed inside and/or inside the height difference portion.
The lid according to claim 1. The penetration part and the baffle part are at different positions in the height direction,
The lid according to claim 1. The height difference part is formed to surround the through part,
The lid according to claim 1. A plane part is formed inside the height difference part,
The lid according to claim 1. The plane part and the baffle part are at different positions in the height direction,
The lid body according to claim 5. The penetration part and the baffle part are at the same position in the height direction,
The lid according to claim 1. a sloped portion is formed inside the height difference portion;
The lid according to claim 1. At least a portion of the wall portion in the height difference portion has a wavy shape;
The lid according to claim 1. The height difference part has a plurality of groove parts,
The bottoms of the plurality of grooves are arranged concentrically,
The lid according to claim 1. The height difference part has a groove part,
an uneven structure is formed in the groove portion;
The lid according to claim 1. The height difference part has a groove part,
In a plan view of the lid region corresponding portion, the width of the groove portion is partially different;
The lid according to claim 1. The height difference part has a step part,
The lid according to claim 1. The step portion forms a groove portion.
The lid body according to claim 13. The lid area corresponding part is provided with a weakened part that guides the dividing position in the lid area corresponding part,
The weakened portion includes a plurality of the penetration portions and at least one continuous portion formed between at least two of the penetration portions.
The lid according to claim 1. The weakened portion forms a plurality of the through portions radially around the continuous portion,
The lid according to claim 15. The lid area corresponding portion includes a base portion having a small opening having an opening area smaller than the opening of the container, a small lid portion that opens and closes the small opening, and the base portion and the small lid portion. Equipped with a hinge part that connects the
The small lid part is configured to be rotatable with respect to the base part about the hinge part,
at least a portion of the penetrating portion is formed at a boundary position between the outer peripheral edge of the small lid portion and the opening edge of the small opening;
The lid according to claim 1. at least a portion of the penetrating portion is formed in the height difference portion;
The lid according to claim 17. a knob is provided on the upper surface side of the small lid;
The lid according to claim 17. The knob has a tab member,
The tab member is joined to the upper surface side of the small lid part.
The lid according to claim 19. Made of paper-based material,
The lid according to claim 1. A low-density part is formed in a portion from the boundary between the baffle part and the height difference part toward the height difference part, where the density of fibers constituting the paper-based material is lower than that of the baffle part.
The lid according to claim 21. The baffle portion and the height difference portion are continuously formed;
The lid according to claim 1. The lid according to any one of claims 1 to 23;
the container having the opening formed in the top end;
the lid body is joined to the container;
Container with lid. The lid according to any one of claims 1 to 23;
the container having the opening formed in the top end;
Combination of lid and container.

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