TWM652936U - Lid, container with lid, combination of lid and container - Google Patents

Abstract

When the cover has a penetration portion and is formed of a paper material, a cover capable of suppressing the contents from overflowing from the penetration portion to the cover when the cover covers the opening of the container, a container with the cover, and a combination of the cover and the container are provided. The cover body is formed in a manner capable of being joined to a container, the container having an opening portion formed at the upper end and an edge portion forming the outer periphery of the aforementioned opening portion, the aforementioned cover body having a joining area corresponding portion corresponding to an area joined to the aforementioned container along the aforementioned edge portion of the aforementioned container, and a cover area corresponding portion composed of a portion located on the inner side relative to the aforementioned joining area corresponding portion, the aforementioned cover area corresponding portion has an obstruction portion on the inner side relative to the peripheral end edge of the cover area corresponding portion, and has a height difference portion and a penetration portion at least a portion located on the inner side relative to the inner edge of the aforementioned obstruction portion.

Description

Lid, container with lid, combination of lid and container

This creation involves a lid, a container with a lid, and a combination of the lid and the container.

The form of placing food and drinks (hereinafter also referred to as "contents") in a container having an opening formed at the top and attaching a lid to provide the container in a sealed state is widely being carried out.

From the perspective of reducing environmental burden, a lid body made of paper material is required as a lid body mounted on a container. As a method of mounting a lid body on a container, a method (sealing method) of joining the lid body to an edge formed on the outer periphery of the opening at the upper end of the container using a method such as heat pressing is known. As shown in Patent Document 1, as a structure for taking contents from a container (container with a lid body) mounted with a lid body, a structure of peeling off (removing) the lid body from the edge of the container and a structure of providing a penetration portion in the lid body and inserting a member (such as a straw, etc.) for taking out the contents into the penetration portion are considered.

Existing technical literature

patent documents

Patent document 1: Japanese Patent Publication No. 2014-84128

When the cover has a through-portion and is made of paper material, there is still room for improvement in suppressing the contents from overflowing from the through-portion onto the cover when the opening of the container is covered by the cover.

This work is based on the following works (1) to (25).

(1) A cover body formed in a manner capable of being joined to a container, the container having an opening formed at an upper end and an edge forming the outer periphery of the opening, the cover body having a joining region corresponding portion corresponding to a region joined to the container along the edge of the container, and a cover region corresponding portion composed of a portion located inside relative to the joining region corresponding portion, the cover region corresponding portion having an obstruction portion inside relative to the peripheral edge of the cover region corresponding portion, and having a step portion and a penetration portion at least at a portion located inside relative to the inner edge of the obstruction portion.

(2) The cover body according to the above (1), in the cover area corresponding portion, the penetration portion is formed inside and/or inside the step portion.

(3) According to the cover body described in (1) above, the positions of the penetration portion and the obstruction portion in the height direction are different from each other.

(4) In the cover body according to the above (1), the step portion is formed to surround the through portion.

(5) The cover according to the above (1), wherein a flat portion is formed inside the step portion.

(6) In the cover according to the above (5), the height direction positions of the flat portion and the blocking portion are different from each other.

(7) In the cover according to the above (1), the positions of the penetration portion and the obstruction portion in the height direction are the same as each other.

(8) According to the cover body described in (1) above, an inclined portion is formed on the inner side of the height difference portion.

(9) In the cover according to the above (1), at least a part of the wall portion in the step portion has a wavy shape.

(10) According to the cover body described in (1) above, the height difference portion has a plurality of groove portions, and the bottoms of the plurality of groove portions are arranged concentrically.

(11) In the cover body according to the above (1), the step portion has a groove portion, and an uneven structure is formed in the groove portion.

(12) According to the cover body described in (1) above, the height difference portion has a groove portion, and when the corresponding portion of the cover area is viewed from above, the width of the groove portion is partially different.

(13) According to the cover body described in (1) above, the height difference portion has a step portion.

(14) In the cover body according to the above (13), the step portion is formed with a groove portion.

(15) According to the cover body described in (1) above, a fragile portion is provided in the cover area corresponding portion to guide the splitting position in the cover area corresponding portion, and the fragile portion has a plurality of the penetration portions and at least one continuous portion formed between at least two of the penetration portions.

(16) According to the cover described in (15) above, the fragile portion has a plurality of the penetration portions formed in a radial pattern around the continuous portion.

(17) According to the lid body described in (1), the lid region corresponding portion comprises: a base having a small opening; a small lid for opening and closing the small opening; and a hinge for connecting the base and the small lid, wherein the small opening has an opening area smaller than the opening of the container, and the small lid is configured to be rotatable relative to the base about the hinge, and at least a portion of the penetration portion is formed at a boundary position between the outer periphery of the small lid and the opening edge of the small opening.

(18) In the cover according to the above (17), at least a part of the through portion is formed in the step portion.

(19) According to the lid body described in (17) above, a gripping portion is provided on the upper surface side of the aforementioned small lid portion.

(20) The cover body according to the above (19), wherein the grip portion has a pull-tab member, and the pull-tab member is joined to the upper surface side of the small cover portion.

(21) According to the cover body described in (1) above, the cover body is formed of a paper material.

(22) The cover according to the above (21), wherein a fiber constituting the paper material has a density higher than that of the barrier in a portion from the boundary between the obstruction portion and the step portion toward the step portion. Low density part.

(23) According to the cover body described in (21) above, the aforementioned obstruction portion and the aforementioned height difference portion are formed continuously.

(24) A container with a lid, comprising: the lid according to any one of (1) to (23); and the container having the opening formed at an upper end, the lid being joined to the container.

(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 an upper end.

Creative effect

According to the present invention, when the lid has a penetration portion and is formed of a paper material, a lid is provided that can suppress the contents from overflowing from the penetration portion onto the lid in a state where the opening of the container is covered by the lid. , containers with lids and combinations of lids and containers.

1: Cover

2:Base

3: Small cover

3A: Outer periphery

4:Hinged part

5A: Corresponding part of the joint area

5B: Covering area corresponding part

5C: Corresponding part of the outer area

6: Small opening

6A: Open edge

8: Obstacle Department

8A:Inside end

9: Height difference part

10: Penetrating Department

11: Plane part

11A: Outer edge

12: Insertion port

13: Low density part

14: Side wall inner step

15: Tilt face

16: Vulnerability Department

17: Continuity Department

18:Bend the face

19: Half cut

21:Pinch part

22: Pull tab component

30: Blank

31: Fiber sheet

31A: Fiber

50A: Joint area corresponding part

50B: Covering area corresponding part

72: Show your face

73: Opposite each other

74: Zhou Duanyuan

90: Step difference section

90A: Wall

91: Groove part

91A: Outer wall

91B: Inner wall

91C: Bottom

92:Part 1

93: Part 2

94:Wide section

95: Narrow width section

96: base end

97:The other end

98: Bottom

99:top

201: Cover

202: Top cover

203: Side wall

203A: Inner peripheral surface

203B: Outer surface

204: Bending part

205: Upper wall

206: Lower wall

208: Cut-in part

210: Penetration Department

219: Insertion port

222: Top cover forming member

223: Side wall forming member

224: concave part

225:convex part

226: Extension

226A: Inner surface

227:Sinking Department

228A:Inner end

228B: Outer end

230: Joining surplus part

231: Part 1

232: Part 2

233: 1st contact wall

234: Second contact wall

235: Continuity Department

236: Curled portion at the upper end of the side wall

237: Lower first contact wall

238: Lower second contact wall

239: Lower end side continuation part

250:Blank

251: 1st blank

252: 2nd blank

253:End edge part

272: Show your face

273: Opposite each other

274: Contact part

274A: 1st contact part

274B: Second contact part

288: Obstruction Department

288A: Inner side

289:Height difference part

291: Groove

500:Container with lid

501:Container

502: Opening

503: Edge

504: Side wall

505:Space Department

507: Bottom

508: Curly part

510:Container body

511: Lateral facial area

651:Joint

HS: Width

CT: Center

R: joint area

WA,WB:width

α: angle

[Figure 1] Figure 1A is a top view showing an example of a cover body of the first embodiment. Figure 1B is a cross-sectional view schematically showing the state of the longitudinal section along the A-A line in Figure 1A.

[Fig. 2] Fig. 2A is a plan view showing an example of the cover body according to the second embodiment. FIG. 2B is a cross-sectional view schematically showing a longitudinal cross-section along line B-B in FIG. 2A .

[Fig. 3] Fig. 3A is a top view showing an embodiment of a cover body of the modification 1 of the second embodiment. Fig. 3B is a cross-sectional view schematically showing the state of the longitudinal section along the C-C line in Fig. 3A.

[Fig. 4] Fig. 4A is a cross-sectional view showing an example of the cover body according to Modification 2 of the second embodiment. FIG. 4B is a cross-sectional view schematically showing a longitudinal cross-section along line B-B in FIG. 4A .

[Fig. 5] Figs. 5A and 5B are cross-sectional views showing an example of the cover body according to Modification 1 of the first embodiment.

[Fig. 6] Fig. 6A is a plan view showing an example of the cover body according to Modification 3 of the second embodiment. FIG. 6B is a cross-sectional view schematically showing a vertical cross-section along line D-D in FIG. 6A .

[Fig. 7] Fig. 7A is a plan view showing an example of the cover body according to Modification 4 of the second embodiment. FIG. 7B is a cross-sectional view schematically showing a longitudinal cross-section along line E-E in FIG. 7A .

[Figure 8] Figure 8A is a top view of an embodiment of a cover body of the modification 5 of the second embodiment. Figure 8B is a cross-sectional view schematically showing the state of the longitudinal section along the F-F line in Figure 8A. Figure 8C is a cross-sectional view schematically showing the state of the longitudinal section along the G-G line in Figure 8A. Figure 8D is a cross-sectional view schematically showing the state of the longitudinal section of the portion corresponding to Figure 8C in another embodiment of the modification 5 of the second embodiment.

[Figure 9] is a cross-sectional view showing an embodiment of the cover body of the fourth embodiment.

[Fig. 10] Fig. 10A is a top view showing an embodiment of a cover body of the modification 6 of the second embodiment. Fig. 10B is a cross-sectional view schematically showing the state of the longitudinal section along the H-H line in Fig. 10A. Fig. 10C is a cross-sectional view schematically showing the state of the longitudinal section along the I-I line in Fig. 10A.

[Fig. 11] Fig. 11A is a plan view showing an example of the cover body according to Modification 7 of the second embodiment. FIG. 11B is a cross-sectional view schematically showing a longitudinal cross-section along line J-J in FIG. 11A .

[Fig. 12] Fig. 12 is a plan view showing an example of the cover body according to Modification 9 of the second embodiment.

[Fig. 13] Fig. 13A is a plan view showing an example of the cover body according to Modification 8 of the second embodiment. FIG. 13B is a plan view showing an example of the cover according to Modification 8 of the second embodiment.

[Figure 14] Figure 14A is a top view showing an example of a cover body of the third embodiment. Figure 14B is a cross-sectional view schematically showing the state of the longitudinal section along the K-K line in Figure 14A.

[Fig. 15] Fig. 15A is a plan view showing an example of the cover body according to Modification 1 of the third embodiment. FIG. 15B is a cross-sectional view schematically showing the state of the longitudinal cross-section along the line L-L in FIG. 15A and a partial enlarged view of the one-point chain line portion.

[Fig. 16] Fig. 16A is a plan view showing an example of the cover body according to Modification 2 of the third embodiment. FIG. 16B is a cross-sectional view schematically showing a longitudinal cross-section along line M-M in FIG. 16A .

[Fig. 17] Fig. 17A is a perspective view showing one embodiment of the container with a lid. FIG. 17B is a cross-sectional view schematically showing a longitudinal cross-section along line N-N in FIG. 17A .

[Figure 18] Figures 18A and 18B are diagrams for explaining the boundary between the obstruction part and the height difference part.

[Fig. 19] Fig. 19A is a cross-sectional view showing an example of the cover body according to Modification 10 of the second embodiment. 19B and 19C are cross-sectional views showing an example of the cover body according to Modification 11 of the second embodiment.

[Figure 20] Figure 20A is a perspective view showing an example of a cover body of the fifth embodiment. Figure 20B is a cross-sectional view schematically showing the state of the longitudinal section along the O-O line in Figure 20A.

[Fig. 21] Fig. 21A is a perspective view showing an example of the cover body according to the sixth embodiment. FIG. 21B is a cross-sectional view schematically showing a longitudinal cross-section along line P-P in FIG. 21A .

[Fig. 22] Fig. 22A is a perspective view showing an example of the cover body according to the seventh embodiment. FIG. 22B is a cross-sectional view schematically showing a longitudinal cross-section along line Q-Q in FIG. 22A .

[Figure 23] Figure 23A is a perspective view showing an example of a cover body of the fifth embodiment. Figure 23B is a cross-sectional view schematically showing the state of the longitudinal section along the R-R line in Figure 23A.

[Figure 24] Figure 24A is a top view showing an example of a cover body of the fifth embodiment. Figure 24B is a cross-sectional view schematically showing the state of the longitudinal section along the S-S line in Figure 24A.

[Figure 25] Figures 25A and 25B are top views showing an example of a blank for manufacturing the lid body of the fifth embodiment.

[Figure 26] is a cross-sectional view schematically showing an embodiment of a container with a lid.

[Fig. 27] Fig. 27A is a perspective view showing an example of the cover body according to the fifth embodiment. Figure 27B shows It is a cross-sectional view showing the state of the longitudinal cross-section along the T-T line in FIG. 27A.

The lid of the present invention is described in detail below based on the drawings. In addition, the lid of the present invention is described as a lid used for a container (cup) containing various beverages such as a coffee cup, but it is not limited to the lid of a container containing beverages, and can also be applied to the lid of a container that contains food other than beverages. In addition, the lid of the present invention can also be applied to a container that can contain various items other than beverages and food, such as parts such as bolts and nuts, or items other than the above. Furthermore, the cover of this invention uses a cover that is circular in top view as an example in the following description, but the shape of the cover is not limited to a circular shape in top view, and can also be applied to various shapes other than a circle, such as an ellipse, a rectangle, a triangle, or other polygons, a chamfered rectangle, or a chamfered polygon.

Hereinafter, the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment, the sixth embodiment, the seventh embodiment and application examples of 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 structure are denoted by the same drawing symbols, and repeated descriptions 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 implementation methods, etc. In addition, in the following description, the directions such as front and back, left and right, up and down, and the direction of the horizontal plane are indicated for the convenience of explanation, but the content of the present invention is not limited to these directions. In the examples of Figures 1 to 27, the Z-axis direction is used as the up-down direction (the upper side is the +Z direction, and the lower side is the -Z direction), the X-axis direction is used as the front-back direction (the rear side is the +X direction, and the front side is the -X direction), and the directions along the X-axis and the Y-axis that are orthogonal to each other on the plane with the Z-axis direction as the normal are used as the X-axis direction and the Y-axis direction, and the plane formed by the X-axis and the Y-axis, that is, the XY plane, is used as the horizontal plane, and the description is based on these. The relative size ratios of the dimensions and the like shown in Figures 1 to 27 are recorded for convenience, and the actual size ratios are not limited unless otherwise specified.

[1 The first implementation method]

〔1-1. Structure〕

The cover 1 of the first embodiment is formed in a state where the container 501 having an opening 502 is covered and the container 501 is joined. As will be described later using FIG. 17A, B, etc., the cover 1 is formed in a state where the container has an opening 502 formed at the upper end and an edge 503 that forms an upper edge of the outer periphery of the opening 502. FIG. 17A, B are a perspective view and a cross-sectional view showing an example of a container 500 with a cover after the cover 1 shown in FIG. 1 is joined to the container 501. The cover 1 can be used by joining along the edge 503. In the cover 1, the region joined to the edge 503 when the cover 1 is viewed from above is referred to as a joining region R. FIG1 is a top view showing an embodiment of the cover body 1. In addition, as the container 501, it is more preferable to use a container having flexibility at the edge 503 of the opening 502. However, these descriptions do not prohibit the container 501 from being a container having little flexibility or almost no flexibility, such as a metal container.

In the example of FIG. 1 , the joint region R corresponds to a substantially annular region formed along the opening 502 of the container 501 in a shape corresponding to the opening 502 .

The cover 1 preferably contains or is formed of paper material.

(Paper materials)

As a paper material, in addition to materials consisting only of pulp, it can also be a material including non-pulp natural fibers and synthetic fibers, recycled fibers and other fibers, but preferably, the pulp contains 50% by mass or more, more preferably, 70% by mass or more, still more preferably, 80% by mass or more, and particularly preferably, it is composed of 100% by mass of pulp. Paper materials can use synthetic resin and natural resin films and non-woven fabrics, wood foil and other wood raw materials, and can also use composite materials with raw materials such as aluminum foil, but when using composite materials, the composite material as a whole preferably contains 50% by mass or more of pulp, and particularly preferably, it contains 80% by mass or more of pulp. The higher the pulp content, the easier it is for the paper material to biodegrade, and thus it is better.

The cover 1 has a joint area corresponding part 5A. In addition, as shown in FIG. 1 , the cover 1 has a cover area corresponding part 5B and an outer area corresponding part 5C. The cover area corresponding part 5B is composed of a part covering the opening 502 . The outer area corresponding part 5C is composed of an outer part located outside the cover area corresponding part 5B.

(Corresponding part of the joint area)

The joining area corresponding portion 5A is a portion of the cover 1 corresponding to the area joined to the container 501 along the edge 503 of the container 501. That is, the joining area corresponding portion 5A is a portion of the cover 1 corresponding to the joining area R (the area facing the edge 503 of the container 501 and joined to the container 501). The joining area corresponding portion 5A is a portion of the cover 1 that forms the joining portion 651 between the cover 1 and the container 501 in the cover 1 in the container 500 with the cover attached. Specifically, when the cover 1 is viewed from above (in the example of FIG. 1 , the Z-axis direction (up and down direction) is the line of sight direction), the portion that forms the joining area R is defined as the joining area corresponding portion 5A. The joining area corresponding portion 5A is generally formed in a ring shape as shown in FIG. 1 . In particular, as shown in FIG1, when the edge 503 of the container 501 is formed into a roughly annular shape, the joining area R is formed into an annular shape, and the joining area corresponding portion 5A is also formed into a roughly annular shape when the lid 1 is viewed from above. The outer edge of the joining area corresponding portion 5A is determined according to the position of the outer edge of the joining area R. The outer edge of the joining area corresponding portion 5A may be located at the outer periphery of the lid 1, or may be located inside the outer periphery of the lid 1 as shown in the example of FIG1. When the joining area R of the lid 1 and the container 501 is not formed continuously, the portion sandwiched by the adjacent joining areas R and facing the edge 503 is also included in the joining area corresponding portion 5A described later.

(Cover area corresponding part)

The cover area corresponding part 5B is composed of a part covering the opening 502 . In the example of FIG. 1 , the cover area corresponding portion 5B is a portion of the cover 1 located inside the joint area corresponding portion 5A, and the center CT of the cover area corresponding portion 5B is the center of the cover 1 . The lid area corresponding portion 5B is a portion that covers the opening 502 in the container 500 with a lid. In addition, the portion covering the opening 502 means a portion covering at least a part of the opening 502 , and includes the case where the small opening 6 is provided as described in the second embodiment.

(Outer area corresponding part)

In addition, as shown in the example of FIG. 1 , the portion outside the cover area corresponding portion 5B of the cover body 1 is the outer area corresponding portion 5C, which is the same portion as the bonding area corresponding portion 5A or a portion including the bonding area R (including the bonding area). area corresponding part 5A).

In the cover body 1, the cover area corresponding part 5B has an obstruction part 8 on the inner side relative to the outer periphery of the cover area corresponding part 5B, i.e., the peripheral edge 74, and when the cover body 1 is viewed from above (in FIG. 1B , when the Z-axis direction is the line of sight), at least a portion located on the inner side relative to the inner edge (inner end 8A) of the obstruction part 8 has a height difference part 9 and a penetration part 10.

(Obstacle Department)

The obstruction portion 8 is a portion that obstructs the movement of the liquid in the height direction (Z-axis direction in FIG. 1B ) when the liquid is injected as the content into the container 500 with the cover body, for example, when the container 501 is vigorously shaken. The obstruction portion 8 is a limiting portion that suppresses (obstructs) the amplitude amplification of the liquid wave when the container 501 is shaken and waves are generated on the liquid surface. The obstruction portion 8 is formed as a portion extending inwardly (in the example of FIG. 1 , the center direction of the cover body 1 when viewed from above) from at least a portion of the peripheral edge 74 of the cover area corresponding portion 5B. In the example of FIG. 1 , the obstruction portion 8 is formed as a portion extending inwardly from the entire outer circumference of the peripheral edge 74 of the cover area corresponding portion 5B.

The obstruction part 8 is preferably separated from the inner peripheral surface of the container 501 when the container 500 with the lid body 1 is used. That is, the obstruction part 8 preferably has a predetermined width from the peripheral edge 74 of the lid region corresponding part 5B, and is preferably formed in a ring shape. The width of the obstruction part 8 (indicated by the diagram mark HS in FIG. 1B , etc.) is preferably a size that is less than the difference between the position of the height difference part 9 based on the position of the peripheral edge 74 of the lid region corresponding part 5B (indicated by the diagram mark HW in FIG. 1B , etc.). The width of the obstruction portion 8 is within this range, so that the obstruction portion 8 becomes a portion with a certain degree of narrow width, which easily produces interference between waves realized based on the inner circumferential surface of the container 501 and the obstruction portion 8 and the height difference portion 9, and easily obtains the effect of attenuating the waves generated by the liquid as the content of the container 501 by the obstruction portion 8. In addition, from the viewpoint of easily obtaining the same effect, when the step portion 9 is formed with a groove portion 91 on the outside as described later (when the groove portion 91 is formed between the center of the cover region corresponding portion 5B and the obstruction portion 8 as shown in FIGS. 2A, B and 6A, B described later), the width (HS) of the obstruction portion 8 is preferably a size that is less than the difference (indicated by the diagram mark HWA in FIG. 6B, etc.) between the position of the groove portion 91 (the position of the bottom 91C) based on the position of the peripheral edge 74 of the cover region corresponding portion 5B.

(height difference part)

The height difference portion 9 is formed inside the cover area corresponding portion 5B relative to the inner end 8A of the obstruction portion 8, and forms a portion with different positions in the vertical direction. In the example of Figures 1A and 1B, the height difference portion 9 is a step portion 90. The step portion 90 has a wall portion 90A extending upward or downward from the inner end of the obstruction portion 8. The wall portion 90A has the inner end of the obstruction portion 8 as a base end, and when the height difference portion 9 is the step portion 90, the other end of the wall portion 90A (the end side opposite to the base end) is connected to the outer edge portion 11A of the plane portion 11. The obstruction portion 8 and the height difference portion 9 are preferably formed continuously. The angle formed by the wall portion 90A forming the step portion 90 and the obstruction portion 8, in the direction in which the wall portion 90A extends based on the obstruction portion 8, is not particularly limited, but is preferably about 30 degrees to 90 degrees. In FIG. 1, etc., the angle in the direction in which the wall portion 90A extends based on the obstruction portion 8 becomes the angle (angle α) in the direction in which the wall portion 90A extends relative to the surface along the obstruction portion 8 (XY plane in FIG. 1, etc.), and the angle α is preferably about 30 degrees to 90 degrees. In addition, the boundary portion between the obstruction portion 8 and the height difference portion 9 can be bent or smoothly curved.

(Plane)

In the example of FIG. 1 , in the cover area corresponding portion 5B of the cover 1 , a planar portion 11 is formed inside the step portion 9 . However this is just one example. In the example of FIG. 1 , the flat portion 11 and the blocking portion 8 have different positions in the height direction, and the flat portion 11 is positioned higher than the blocking portion 8 .

In the example of FIG. 1 , the entire outer periphery of the plane portion 11 is connected to the wall portion 90A, and when the lid body 1 is viewed from above, the height difference portion 9 is formed in a manner that surrounds the plane portion 11.

(penetration)

In the cover area corresponding part 5B, a penetration part 10 is formed inside and/or inside the step part 9 . In the example of FIG. 1 , the penetration portion 10 is formed in the flat surface portion 11 formed inside the step portion 9 . However, this is only an example, and the position of the through portion 10 is not limited to this.

The penetration portion 10 has a structure (penetrating structure) in which one surface of the cover 1 is cut into the other surface (from the exposed surface 72 to the opposing surface 73 ) in the up-down direction (thickness direction), and is a so-called cut-out portion. The shape of the penetration portion 10 is not particularly limited. In the example of FIG. 1 , it is formed into a cross shape. However, this is only an example and the shape of the penetration portion 10 is not limited.

The penetration portion 10 can function as an insertion opening 12 for inserting a straw or the like from the outside.

In the cover 1 shown in the example of FIG. 1A , the penetration portion 10 and the obstruction portion 8 have different positions in the height direction. The penetration portion 10 is arranged at a higher position (+Z direction) than the obstruction portion 8 . ). That is, when the penetration portion 10 is formed in the flat portion 11 , the penetration portion 10 is positioned higher than the obstruction portion 8 in accordance with the positional difference between the penetration portion 10 and the obstruction portion 8 . In addition, in this example, the step portion 9 is formed to surround the through portion 10 .

〔1-2. Manufacturing method〕

As a method of manufacturing the cover 1, for example, a blank 30 obtained by punching a sheet (raw material sheet) made of a material corresponding to the material of the cover 1 according to the shape of the cover 1 can be molded. Process to manufacture the cover 1. In this case, the paper material constituting the cover 1 is partially stretched. In particular, in the cover 1 , as shown in FIG. 18A , at the boundary between the barrier portion 8 and the step portion 9 and in the portion from the boundary toward the step portion 9 , the density of the fibers constituting the paper material is lower than that of the barrier portion 8 . low-density part 13. In the example of FIG. 18A , the low-density portion 13 in the cover 1 is formed in a portion surrounded by a dotted line. In addition, by forming such a low-density portion 13, it is considered that the cushioning properties of the low-density portion 13 can be imparted to the entire lid 1, even if a force such as vertical vibration or the like is applied to the container 500 with the lid, such as As shown in FIG. 18B , even if the inner portion comes into contact with (collides with) the blocking portion 8 in the direction of arrow N, the collision force of the contents can be alleviated.

In addition, the case where the blank 30 is molded is not limited to the case where the cover 1 is formed only from the blank 30 , but also includes the case where the cover 1 has a structure in which members such as the tab member 22 are attached to the blank 30 . An example of the molding process is a process of passing the blank 30 through an embossing roller to provide the blank 30 with an uneven structure corresponding to the step portion 9 .

The raw material sheet is preferably composed of a fiber sheet 31 containing paper material.

(Fiber sheets including paper-like materials)

As the fiber sheet 31 including paper materials, there can be listed so-called paper obtained by taking a pulp of a fiber raw material onto a net and drying or press-drying it, and then making it into a sheet, and so-called paper produced by piling open fiber raw materials such as pulverized pulp obtained by pulverizing a raw material sheet composed of pulp-based fibers, etc. by a pulverizer, and fixing the fibers of the fiber pile with an adhesive, etc., by agglutinating plant fibers and other fibers, so-called airflow mesh sheets, etc. In addition, the fiber sheet including paper materials includes a fiber sheet having a layered structure obtained by stacking a plurality of sheets of the above-mentioned paper. In addition, the fiber sheet 31 includes sheets of fibers other than paper pulp, such as chemical fibers, fibers imparted with functions such as water resistance, metal fibers, and glass fibers, in addition to paper materials.

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 cross-linked using a crosslinking agent or the like, or may contain additives other than the resin material described below. In the fiber sheet 31, the plurality of fibers 31A are cross-linked with each other using a cross-linking agent, thereby stabilizing the shape of the fiber sheet 31 and making it difficult to defibrate.

(fiber)

The fiber 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. Fibers having either structure may be included in the fiber sheet 31 . The fiber sheet 31 is preferably formed in a state in which a plurality of fibers having such a structure are further intertwined.

〔1-3. Variations〕

(Variant 1)

In the cover 1 of the first embodiment, as shown in FIG. 5A , the flat portion 11 may form an inclined surface portion 15 inside the step portion 9 in the cover area corresponding portion 5B. In addition, as shown in FIG. 5B , in the cover 1 of the first embodiment, the flat portion 11 can be changed and a curved surface portion 18 can be formed inside the step portion 9 in the cover area corresponding portion 5B. This is the same in the second to fourth embodiments. In the example of FIG. 5B , the curved surface 18 is bent at the boundary with the upper end of the step portion 9 (the other end 97 of the wall portion 90A). However, this is only an example, and the curved surface may be smoothly bent.

(Modification 2)

In the cover 1 of the first embodiment, the planar portion 11 may be omitted. Such an embodiment is called modification 2 of the first embodiment. As a modification 2 of the first embodiment, for example, referring to FIG. 19B , there can be exemplified a structure in which the groove portion 91 forming the step portion 9 in FIG. 19B is changed as the step portion 90 .

〔1-4. Function and effect〕

In a container with a lid, when the lid has a penetration portion and the content contained in the container with a lid is a liquid, it is required to suppress the risk of liquid leakage from the penetration portion of the lid. In particular, when a container with a lid is formed by joining the lid to the container using a sealing method such as heat sealing, it is required to suppress the possibility of liquid leakage from the penetration portion of the lid. That is, when the lid and the container are joined by a sealing method, the lid and the container can be brought into close contact with each other in the joint area. Therefore, if a penetration portion is formed in the lid, the liquid as the content The outlet is easily limited to the penetration portion, so there is a possibility that the liquid is likely to be concentrated and ejected to the outside from the penetration portion, and there is a strong demand to suppress leakage from the penetration portion. For example, when the user shakes the container left and right with the lid attached, the liquid swings left and right in the container. As the liquid moves within the container, waves may occur on the surface of the liquid. If there is a gap between the lid and the lid, waves will be generated on the liquid surface and the liquid will cause damage to the container. If it collides with the gap between the lid and the lid, the liquid will leak out from the gap, and the wave of the liquid (the wave formed on the liquid surface) will easily collapse. However, if the gap between the container and the lid is closed to form a joint, the wave of the liquid will When it collides with the joint between the container and the lid, it is reflected by the free end, and the reflected wave of the liquid advances in the direction away from the joint. When a liquid wave resonates with a reflected liquid wave, it may become a wave with a certain large amplitude. When the amplitude of the wave of the liquid is maintained, the crest of the wave of the liquid reaches the penetration portion, and there is a possibility that the liquid leaks from the penetration portion to the outside.

When the lid is made of paper material, in addition to the problem of liquid leaking to the outside from the penetration portion of the lid, there is also the possibility of penetrating into the paper material due to liquid coming into contact with the penetration portion. Therefore, when the lid is made of a paper material, especially in a state where the opening of the container is covered by the lid (that is, a container with a lid), it is required to suppress the passage of contents from the penetration portion to the container. The exposed side of the cover overflows.

In view of this, the cover 1 of the first embodiment is formed with an obstruction part 8 and a height difference part 9, so that when the size of the liquid wave is further enlarged, the liquid can collide with the boundary between the obstruction part 8 and the height difference part 9. The height difference is generated in the cover 1 through the obstruction part 8 and the height difference part 9, so it is believed that when the liquid wave collides with the boundary between the obstruction part 8 and the height difference part 9, the liquid wave is likely to become a state of synthesizing waves with various phases and directions of travel, and the liquid wave is easy to cancel, which can easily suppress the liquid from leaking from the penetration part 10.

[2 Second Embodiment]

〔2-1. Structure〕

In the first embodiment, as shown in Figs. 2A and 2B, the step portion 9 may also have a groove portion 91 (referred to as the second embodiment). Fig. 2A is a top view schematically showing an embodiment of the cover body 1 of the second embodiment. Fig. 2B is a cross-sectional view schematically showing an example of the state of the longitudinal section along the B-B line in Fig. 2A. In the cover body 1 of the second embodiment, the step portion 9 has an outer wall 91A and an inner wall 91B constituting the groove portion 91 as a wall portion 90A. The step portion 90 corresponds to the side wall (outer wall 91A) of the groove portion 91 connected to the obstruction portion 8, and the step portion 90 becomes a part of the groove portion 91. The wall portion in the step portion 90 in the first embodiment becomes the outer wall 91A.

In the example of FIG. 2A , the upper end of the side wall (the inner side wall 91B) located on the inner side (the center of the cover area corresponding portion 5B) among the side walls forming the groove portion 91 is connected to the outer peripheral edge of the flat portion 11 . The step portion 9 forms a difference in the positions of the bottom surface (bottom 91C) of the groove portion 91 and the obstruction portion 8 in the height direction (Z-axis direction). In addition, in the example of FIG. 2A , the step portion 9 also forms a position difference in the height direction between the bottom 91C of the groove portion 91 and the upper end of the inner wall 91B. Along with the formation of such groove portion 91, a difference in the positions of the flat portion 11 and the obstruction portion 8 in the height direction is formed. In the groove portion 91, the outer wall portion (outer wall 91A) and the inner wall portion (inner wall 91B) are different in height (dimension of the difference in height direction from the lower end to the upper end), and the inner wall portion (inner wall 91B) 91B) is greater than the height of the outer wall portion (outer wall 91A), but this is only an example. However, in order to make it easier for the waves of the liquid at the position closer to the penetration portion to collapse, it is preferable that the height of the upper end of the inner side wall 91B is greater than the height of the upper end of the outer side wall 91A. In addition, when a plurality of groove portions 91 are provided concentrically, the height of the upper end of the outer side wall 91A referred to here means the outer side wall 91A in the outermost groove portion 91 connected to the obstruction portion 8 The height of the upper end. When a plurality of groove portions 91 are concentrically provided, the height of the upper end of the inner side wall 91B represents the height of the upper end of the inner side wall 91B in the innermost groove portion 91 (located closest to the cover area corresponding portion 5B). The height of the inner wall at the center position).

In addition, the groove portion 91 is formed over the entire outer circumferential range of the inner edge of the obstruction portion 8 and is formed in an annular shape.

The cover 1 of the second embodiment can be manufactured using the same method as the first embodiment. In addition, the second actual The cover 1 of this embodiment can obtain the same effects as those of the first embodiment. In addition, the cover 1 of the second embodiment is provided with the groove portion 91 so as to form the bottom 91C on the lower side than the obstruction portion 8 . This can improve the efficiency of suppressing liquid waves by the groove portion 91 .

[2-2. Modifications]

(Variant 1)

In the cover 1 of the second embodiment described above, the groove portion 91 is formed in a shape such that the bottom surface 98 is formed on the bottom portion 91C. However, the invention is not limited to this. As shown in FIGS. 3A and B , the groove portion 91 may also be formed. It has a shape such that the top portion 99 is formed to protrude in the downward direction (-Z direction). This aspect is called modification 1 of the second embodiment. 3A and 3B are diagrams illustrating an example of the cover 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 . However, this is only an example, and the top portion 99 may be formed on a part of the bottom portion 91C.

(Modification 2)

In the cover 1 of the second embodiment, the position of the flat part 11 is not limited to the case where the position in the height direction is above the blocking part 8. As shown in FIG. 4A, the flat part 11 and the blocking part 8 may also be , their positions in the height direction are the same. In this case, as long as the penetration portion 10 is formed in the flat surface portion 11 , the position of the penetration portion 10 becomes the same position as the position of the obstruction portion 8 in the height direction. In addition, as shown in FIG. 4B , the flat portion 11 may be positioned lower than the obstruction portion 8 in the height direction. In this case, as long as the penetration portion 10 is formed in the flat surface portion 11 , the penetration portion 10 will be positioned lower than the obstruction portion 8 in the height direction.

(Variant 3)

In the cover body 1 of the second embodiment, as shown in Figs. 6A and 6B, the groove portion 91 may also be formed with a crankshaft-shaped step (side wall inner step portion 14) between the lower end and the upper end of the inner side wall 91B. Such a method is referred to as the third variant of the second embodiment. Figs. 6A and 6B are diagrams showing an embodiment of the cover body of the third variant of the second embodiment. In the example of Fig. 6B, with respect to the side wall inner step portion 14, the position where the step is formed becomes the same as the position in the height direction relative to the position of the obstruction portion 8, and the cover body 1 becomes the same as the structure in which the groove portion is formed on the outer side compared to the side wall inner step portion 14 when it is viewed from above. In addition, regarding the side wall inner step portion 14, for example, the position where the step is formed can be formed to be higher or lower than the position of the obstruction portion 8 in the height direction. In the cover body 1 of the second embodiment, if the side wall inner step portion 14 is formed, it is considered that when the content stored in the container 500 with the cover body is liquid, when the wave of the liquid collides with the position of the side wall inner step portion 14 in the inner side wall 91B, the wave is more likely to collapse.

(Modification 4)

In the cover 1 of the second embodiment, as shown in FIGS. 7A and 7B , the step portion 9 may have a plurality of groove portions 91 . This aspect is called modification 4 of the second embodiment. 7A and 7B are diagrams illustrating an example of a cover according to Modification 4 of the second embodiment. In the example of FIG. 7A , the bottom portions 91C of the plurality of groove portions 91 are concentrically arranged. In this case, the groove portion 91 formed on the outermost side of the outer wall 91A is connected to the obstruction portion 8 . Regarding the groove portions 91 adjacent in the inward and outward directions, the outer side wall 91A of the groove portion 91 provided on the inner side is connected to the inner side wall 91B provided on the outer side. In addition, the groove portion 91 formed on the innermost side of the inner wall 91B is connected to the flat portion 11 . In the example of FIG. 7A , two groove portions 91 are formed, but three or more groove portions may be formed.

In the lid 1 of the second embodiment, if a plurality of grooves 91 are formed, it is considered that when the contents contained in the lid-attached container 500 are liquid, the waves of the liquid are likely to collide with the boundaries between the inner wall and the bottom and the boundaries between the outer wall and the bottom forming the grooves 91, and the waves are more likely to collapse, similar to the case where the waves of the liquid collide with the boundaries between the obstruction part 8 and the outer wall.

(Modification 5)

In the cover 1 of the second embodiment, as shown in FIGS. 8A, B, and C, the groove portion 91 may be formed with a concave-convex structure forming concavities and convexes. This aspect is called modification 5 of the second embodiment. 8A, B, and C are diagrams illustrating an example of the cover according to Modification 5 of the second embodiment. In addition, the unevenness referred to here means that there is a greatly protruding portion (in the −Z direction in FIG. 8B ) with respect to the size of the protrusion on the contact surface side (opposing surface 73 side) with the container 501 in the lid body 1 . The protruding part) (the first part 92) and the part which protrudes less than the first part 92 (the part protruding in the -Z direction in FIG. 8C) (the second part 93). In the example shown in FIG. 8B , the first portion 92 has a top 99 formed on the bottom 91C of the groove 91 . In the example shown in FIG. 8C , the second portion 93 is formed in four directions, and the bottom 91C of the groove 91 is formed with a top 99 . Bottom 98. The first part 92 and the second part 93 may have such different shapes, either one may be formed with a top 99, and any one may be formed with a bottom 98. As shown in FIGS. 8B and C , when the first part 92 and the second part 93 have different shapes (top 99 , bottom 98 ), it is considered that if the content contained in the container 500 with a lid is a liquid, the liquid Waves are more likely to crash.

In addition, in modification 5, the second portion 93 may be omitted as shown in FIG. 8D. In this case, the groove portion 91 is formed discontinuously along the inner periphery (inner end 8A) of the obstruction portion 8.

(Variant 6)

In the example of the cover body 1 of the second embodiment, as shown in Figures 10A, B, and C, when the cover area corresponding part 5B is viewed from above, the width of the groove part 91 can be partially different. Such a method is called modified example 6 of the second embodiment. Figures 10A, B, and C are figures showing an embodiment of the cover body of modified example 6 of the second embodiment. The width of the groove part 91 here refers to the width at the upper end position of the part where the outer wall 91A and the inner wall 91B of the groove part 91 face each other when the horizontal direction is the line of sight. In the groove part 91 shown in Figure 10A, a wide portion 94 and a narrow portion 95 are formed. The width WA of the wide portion 94 is larger than the width WB of the narrow portion 95. In the width portion 94, as shown in FIG10A, when the lid 1 is viewed from above, the outer side wall 91A and the inner side wall 91B are bent into a concave shape. Therefore, when viewed from the side of the contact surface (opposite surface 73) of the lid 1 with the container 501, the width portion 94 has a shape in which the outer side wall 91A and the inner side wall 91B protrude in a convex shape.

(Variant 7)

In the example of the cover body 1 of the second embodiment, as shown in Figures 11A and B, at least a portion of the wall portion 90A in the height difference portion 9 may have a wavy shape. Such a method is referred to as modification 7 of the second embodiment. Figures 11A and B are diagrams showing an embodiment of the cover body of modification 7 of the second embodiment. In the example of Figure 11A, the inner wall 91B in the groove portion 91 is molded into a wavy shape. When the cover body 1 is manufactured, the paper material is stretched during the molding process of the blank 30, and this causes the size of the paper material to change, thereby causing a concern that wrinkles will be generated on the blank 30. This modification can suppress this hidden danger. In addition, when the inner wall 91B in the groove portion 91 is formed into a wave shape, it is believed that when the content stored in the container 500 with a lid is liquid, it is easier to collapse the wave of the liquid.

(Modification 8)

In the example of the cover body 1 of the second embodiment, as shown in FIG. 2 and the like, the penetration portion 10 as the insertion port 12 is not limited to being formed in a cross shape. For example, as shown in FIG. 13A, the penetration portion 10 can be formed in a C shape. This is also applicable to the first embodiment. In addition, in FIG. 13A, the description of the groove portion 91 is omitted for ease of explanation.

(Modification 9)

In the example of the cover body 1 of the second embodiment, as shown in FIG12, the insertion port 12 is not limited to being formed by the penetration portion 10, and the insertion port 12 may also be formed by the fragile portion 16. That is, in the cover body 1, a fragile portion 16 for guiding the split position in the cover area corresponding portion 5B may be provided in the cover area corresponding portion 5B. The fragile portion 16 may have 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 FIG12, the fragile portion 16 has a plurality of penetration portions 10 formed in a radial shape around the continuous portion 17. This is also applicable to the first embodiment. In addition, in FIG12, for the convenience of explanation, the description of the groove portion 91 is omitted.

The cover 1 of the modification 9 of the second embodiment can also be applied to a case where the insertion opening 12 is different from a cross shape, for example, a case where the insertion opening 12 is formed in a C shape.

In this case, as shown in FIG. 13B , the fragile portion 16 has a structure in which the penetration portion 10 and the continuous portion 17 are arranged along a C-shape. In addition, in FIG. 13B , the description of the groove portion 91 is omitted for ease of explanation.

(Modification 10)

In the cover 1 of the second embodiment, as shown in FIG. 19A , at least a part of the groove portion 91 may be formed of a curved surface. Such an embodiment is called modification 2 of the first embodiment. FIG. 19A is a cross-sectional view showing an example of the cover 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 constituting the groove portion 91 form curved surfaces. However, this is only an example. The cover 1 according to Modification 10 of the second embodiment includes a case where at least one of the outer wall 91A and the inner wall 91B constituting the groove portion 91 forms a curved surface.

(Modification 11)

In the cover 1 of the second embodiment, as shown in FIG. 19B , the planar portion 11 may be omitted. Such an embodiment is called modification 11 of the first embodiment. FIG. 19A is a cross-sectional view showing an example of the cover 1 according to Modification 10 of the second embodiment. In the example of FIG. 19B , the inner wall 91B constituting the groove portion 91 continues to extend toward the inner side of the cover 1 . In addition, in the drawing of FIG. 19B , the step portion 9 is shown to be formed outwardly from the center of the through portion 10 . However, this does not prohibit the center of the cover 1 from being included in the step portion 9 . also That is, in the cover 1 , the center of the cover 1 is included in the step portion 9 , and the entire portion located inside the outer wall 91A of the groove portion 91 may form the step portion 9 . This is not limited to the second embodiment, and the same applies to other embodiments such as the first embodiment.

In addition, the cover 1 of the modification 11 of the second embodiment can also be combined with the modification 10 of the second embodiment described above, as shown in FIG19C. In the example of FIG19C, the entire height difference portion 9 is formed by a curved surface. In this example, a bell-shaped portion is formed on the inner wall 91B, and an outer wall 91A is formed in a shape that is bent outward from its outer periphery to the outside, thereby forming a groove portion 91.

[3 Third Embodiment]

〔3-1. Structure〕

In the first embodiment or the second embodiment, the insertion opening 12 is formed in the penetration portion 10 . However, the cover 1 is not limited to this case. As shown in FIGS. 14A and B , the penetration portion 10 may be formed in the lid area corresponding portion 5B (third implementation). In the third embodiment, the lid area corresponding part 5B has a base 2 having a small opening 6 with an opening area smaller than the opening 502 of the container 501; a small lid 3 that opens and closes the small opening 6; and the base 2 The hinge part 4 is connected to the small cover part 3. The small cover part 3 is configured to be rotatable relative to the base part 2 with the hinge part 4 as an axis. At least a part of the through part 10 is formed on the outer peripheral edge 3A of the small cover part 3 and the small opening. The boundary position between the opening edge 6A of the portion 6. Such penetration portion 10 can also serve as a penetration portion (other penetration portion) configured to function as the insertion opening 12 .

In FIG. 14A , the base 2 is composed of the portion of the cover 1 except the small cover 3 . The base 2 is composed of the total portion of the cover area corresponding portion 5B excluding the small cover portion 3 and the outer area corresponding portion 5C. The small cover part 3 may have a structure in which members different from the base part 2 are connected by the hinge part 4. Alternatively, as shown in the example of FIG. 14A, the small cover part 3 and the base part 2 may be formed continuously and integrally. However, in the case of a continuum, the package The case where the small cover part 3 and the base part 2 are only slightly continuous may also include cases where the hinge part 4 is partially cut off. 14A and 14B are a plan view and a cross-sectional view (longitudinal cross-sectional view along line K-K in FIG. 14A ) showing an example of the cover body according to the third embodiment. In addition, FIG. 14A illustrates an example in which the base portion 2, the small cover portion 3, the small opening portion 6, and the hinge portion 4 are provided in the cover body 1 of the second embodiment.

In the example of FIG. 14A , the penetration portion 10 is formed at or near the upper end of the inner side wall 91B (at or near the boundary between the inner side wall 91B and the plane portion 11). In this case, the penetration portion 10 is formed approximately near the end of the height difference portion 9 (the portion of the other end 97 relative to the base end 96) (a position closer to the other end 97 than the center CT (the center of the corresponding cover area corresponding portion 5B in FIG. 1 etc.)). If the penetration portion 10 is formed in this way, the small opening portion 6 can be opened by pulling up the small cover portion 3 in the upward direction (the direction of the arrow F in FIG. 14B ). However, this is only an example, and a portion of the penetration portion 10 may also extend into the inner side wall 91B. In this case, when the small cover portion 3 is pulled up, the small opening portion 6 is formed into a part of the inner wall 91B.

[3-2. Modifications]

(Modification 1)

In the lid body 1 of the second embodiment, the boundary position between the outer peripheral edge 3A of the small lid portion 3 and the opening edge 6A of the small opening portion 6 does not need to be formed inside and/or inside the step portion 9 . For example, as shown in FIG. 15A , the boundary position between the outer peripheral edge of the small cover part and the opening edge of the small opening part (more specifically, this position is predetermined to be the boundary between the outer peripheral edge of the small cover part and the small opening part). The boundary position between the aforementioned opening edges) may be defined in the obstruction portion. However, in this case, it is preferable that the penetration portion 10 is not formed at the boundary position between the outer peripheral edge of the small cover portion and the opening edge of the small opening portion. In the example of FIG. 15 , a half-cut portion is formed as shown in FIG. 15B at a boundary position between the outer peripheral edge of the small cover portion and the opening edge of the small opening portion. By forming the half-cut portion 19 in this way, in the state of the container 500 with the lid and in the state in which the small lid portion 3 is not lifted (when not in use), the obstruction portion 8 can be formed from the peripheral edge 74 of the lid area corresponding portion 5B to block The inner end 8A of the barrier portion is in a state in which no hole or slit-like structure is formed. Furthermore, in the state of the container 500 with a lid, when the small lid 3 is lifted, the half-cut portion 19 is destroyed and the small opening 6 is opened (the outer peripheral edge 3A of the small lid 3 (in a state separated from the opening edge 6A of the small opening 6 and formed with the outer peripheral edge 3A and the opening edge 6A), the contents stored in the container with lid 500 can be taken out through the small opening 6 . In addition, in the case of the example of FIG. 15A , the penetration portion 10 is formed in a portion that becomes the insertion opening 12 (only other penetration portions are formed). 15A and 15B illustrate an example in which the base 2, the small cover 3, the small opening 6, and the hinge 4 are provided in the cover 1 of the first embodiment.

(Variant 2)

In the lid body 1 of the second embodiment, as shown in Figures 16A and 16B, a gripping portion 21 may be provided on the upper surface side of the small lid portion 3. In the example of Figures 16A and 16B, in the state where the small opening portion 6 is closed by the small lid portion 3, a gripping portion 21 is provided on the exposed surface of the small lid portion 3 (exposed surface 72 of the lid body 1), that is, on the upper surface side. The structure of the gripping portion 21 is not particularly limited as long as the small lid portion 3 can be rotated with the hinge portion 4 as the axis, but in the example of Figures 16A and 16B, a pull-tab member 22 is provided as the gripping portion 21. The example of Figures 16A and 16B is based on the example of Figure 15A where a gripping portion 21 is provided.

The method for joining the pull-tab member 22 to the small cover part 3 can include various methods such as ultrasonic joining, heat sealing, and joining based on adhesives, but ultrasonic joining is preferred from the perspectives of the ease of joining and the strength of joining in the above methods. The joining position of the pull-tab member 22 and the small cover part 3 in the small cover part 3 is not particularly limited as long as the small cover part 3 can be raised (the small cover part 3 can be rotated) by lifting the pull-tab member 22.

[4 4th Embodiment]

〔4-1. Structure〕

In the first embodiment, when the step portion 9 is the step portion 90 , as shown in FIG. 9 , the step portion 9 has an end connected to the obstruction portion 8 as one end (the base end 96 ). , the case where the other end 97 is at a lower position in the height direction is not excluded (such a cover is referred to as the fourth embodiment). FIG. 9 is a diagram showing an example of the cover 1 according to the fourth embodiment.

In the example of FIG. 9 , the other end 97 of the step portion 9 is connected to the plane portion 11, and a through portion 10 is formed in the plane portion 11. In this case, a low-density portion 13 is also formed in the portion from the boundary between the obstruction portion 8 and the step portion 9 toward the step portion 9, where the density of the fiber constituting the paper material is lower than that of the obstruction portion 8. However, from the viewpoint of the position of the through portion 10 and the position in the height direction of the obstruction portion 8, the example of FIG. 1 of the first embodiment is better than the example of FIG. 9 of the fourth embodiment.

In the first to fourth embodiments of the lid body, the lid body 1 is joined to the container 501 in the state of the container 500 with the lid body described later, forming a joint 651. The joint 651 is a portion where the container 501 and the lid body 1 are bonded (including bonding) to each other, and in order to separate the lid body 1 and the container 501, the lid body 1 and the container 501 are peeled off at the joint 651. The lid body 1 is not limited to this lid body, and the lid body 201 that is embedded in the container 501 can also be applied to the container 500 with the lid body as described in the fifth to seventh embodiments described later.

Each of the lids described in the fifth to seventh embodiments has a top cover portion 202 and a side wall portion 203 as will be described later. At least the top lid portion 202 can be applied to the lids of the first to fourth embodiments. The composition described in 1. Each cover body of 5th Embodiment to 7th Embodiment is demonstrated using drawings.

[5 Fifth Embodiment]

[5-1. Composition]

As shown in Figures 20A and 20B, the cover 201 of the present invention has a top cover portion 202 and a side wall portion 203 (the fifth embodiment). This method is referred to as the fifth embodiment. The cover 201 of the fifth embodiment can be formed in contact with a container having an opening portion 502 formed at the upper end and an edge 503 forming an upper edge of the outer periphery of the opening portion 502 as described later using Figure 26. Regarding the state in which the cover 201 is in contact with the container 501, the cover 201 is formed in a manner capable of being fitted with a container having an opening portion 502 formed at the upper end and an edge 503 forming an upper edge of the outer periphery of the opening portion 502. FIG. 20A is a perspective view schematically showing an example of a cover of the fifth embodiment. FIG. 20B is a cross-sectional view schematically showing an example of a cover of the fifth embodiment. In addition, FIG. 20B shows the state of the longitudinal section along the line O-O in FIG. 20A. FIG. 26 is a cross-sectional view showing an example of a container 500 with a cover after the cover 201 shown in FIG. 20A and FIG. 20B is joined to the container 501.

As shown in the examples of FIGS. 20A and 20B , the cover 201 preferably has a bent portion 204 . The bending part 204 is a part that connects the top cover part 202 and the side wall part 203. In the example of FIGS. 20A and 20B , the bending part 204 and the side wall part 203 are formed continuously (integrally).

(top cover part)

As shown in FIG. 26 , the top cover portion 202 is a portion that covers the opening 502 of the container 501 when the lid 201 is attached (assembled) to the container 501 . The shape of the top cover part 202 can be determined according to the shape of the container 501, and examples thereof include a circular shape, an elliptical shape, a triangular shape, a rectangular shape, a polygonal shape, a chamfered shape, and the like.

(bending part)

The bent portion 204 is formed so as to surround the outer periphery of the top cover portion 202, and is a portion forming a boundary between the top cover portion 202 and the side wall portion 203. The bent portion 204 is formed so that when the cover body 201 is mounted on the container 501, the lower side wall portion 203 faces the side wall 504 and the edge portion 503 of the container 501. In the example of FIG. 20A to FIG. 20B, the bent portion 204 has a bending structure, but as described later, the bent portion 204 is not limited to the case of having a bending structure. In addition, "the portion forming the boundary between the top cover 202 and the side wall 203" includes the case where the portion itself becomes the boundary, and the case where the boundary is defined by the inside and the end of the portion (the case where a portion of the top cover 202 and/or the side wall 203 also serves as the bent portion 204). The boundary between the top cover 202 and the side wall 203 is defined at the center of the bent portion 204. In the case where the bending portion 204 has a bending structure (for example, FIG. 24A to FIG. 24B showing an embodiment of the modification 4 of the fifth embodiment described later), the bending portion 204 is composed of a portion specific to the bending range, and the boundary between the top cover portion 202 and the side wall portion 203 is defined at the approximate center of the bending portion 204.

(side wall part)

The side wall portion 203 is formed in a ring shape along the outer peripheral end of the top cover portion 202.

By integrally molding the blank 250 for forming the cover body 201, the top cover portion 202, the bent portion 204, the side wall portion 203 and the top cover portion 202 are integrally formed, thereby obtaining the cover body 201 of the seventh example.

(blank)

In the cover 201 of the fifth embodiment, the blank 250 can be formed in the same manner as the blank 30 shown in the description of the first example of the cover. That is, the blank 250 is formed of a paper material. The paper material that can be used in the fifth embodiment is the same as the paper material described in the first embodiment, so a detailed description is omitted. In addition, the point that the paper material described in the first embodiment can be used is also the same in the sixth and seventh embodiments described later, so a detailed description of the paper material is also omitted in the description of these embodiments.

(Contact part)

The cover 201 has a contact portion 274 that contacts the container 501 when the cover 201 is engaged with the container 501. The contact portion 274 is formed at a predetermined portion (first contact portion 274A) of the side wall portion 203. As shown in FIG. 20B , the contact portion 274 is preferably formed at a portion (second contact portion 274B) corresponding to a predetermined region on the side of the opposing surface 273 in the top cover 202. When the cover 201 is engaged with the container 501, the contact portion 274 can suppress the risk of the contents of the container 501 leaking to the outside. The first contact portion 274A is preferably formed roughly within the entire outer circumference of the outer end of the edge 503 of the container, and is preferably formed in a ring shape. The second contact portion 274B is preferably formed roughly within the entire outer circumference of the upper end of the edge 503 of the container, and is preferably formed in a ring shape. The first contact portion 274A and the second contact portion 274B can be separated from each other or connected to each other. The contact portion 274 (including the first contact portion 274A and the second contact portion 274B) shown in the fifth embodiment is the same in the sixth embodiment and the seventh embodiment described later.

In addition, when the top cover portion 202 is made to correspond to the cover area corresponding portion 50B of the first to fourth embodiments, the second contact portion 274B can be formed at a position substantially the same as the bonding area corresponding portion 50A of the first to fourth embodiments.

In addition, in the example of FIG. 20A and FIG. 20B, a penetration portion 210 is formed at a predetermined position of the top cover portion 202. An insertion port 219 is formed as the penetration portion 210. The penetration portion 210 is formed by the cut-in portion 208. The cut-in portion 208 is a cross cut-in in the example of FIG. 20. The insertion port 219 and the penetration portion 210 can be formed in the same manner as the insertion port 12 and the penetration portion 10 described in the first embodiment. The penetration portion 210 is a portion that penetrates the top cover portion 202 from the exposed surface 272 to the opposite surface 273.

(Obstacles and height differences)

In the cover body 1, the top cover part 202 can be constructed in the same manner as the cover area corresponding part 5B shown in the first to fourth embodiments and their variations. For example, in the example of FIG. 20A and FIG. 20B as an embodiment of the cover body 201 of the fifth embodiment, the top cover part 202 has an obstruction part 288 on the inner side from the inner peripheral edge of the contact part 274, and when the cover body 201 is viewed from above (in FIG. 20B, when the Z-axis direction is the line of sight), at least a portion located on the inner side relative to the inner edge (inner end 288A) of the obstruction part 288 has a height difference part 289 and a penetration part 210. The obstruction part 288 and the height difference part 289 are respectively the same as the obstruction part 8 and the height difference part 9 shown in the first embodiment, so the detailed description is omitted. The obstruction part 288 and the height difference part 289 are also in the sixth embodiment and the seventh embodiment described later, so the detailed description of these structures is also omitted in the description of these embodiments.

〔5-2 Function and effect〕

Containers with lids have the following problem: when the contents of the container are items such as liquids (containing liquids), they must be carried by users and delivery personnel (transportation by motorcycles, etc.) The generated vibration may cause the contents to leak out from the penetration portion of the lid attached to the container with the lid. That is to say, the movement of the liquid in the container 501 may cause waves in the liquid surface, and the crests of the waves of the liquid may reach the penetration part, possibly causing the liquid to leak out from the penetration part.

When the lid is made of paper material, in addition to the problem of liquid leaking to the outside from the penetration portion of the lid, there may also be a problem of penetration of the paper material due to liquid coming into contact with the penetration portion.

The cover 201 of the fourth embodiment is formed with the obstruction portion 288 and the step portion 289 in the same manner as the first embodiment, thereby easily suppressing leakage of liquid from the penetration portion 10 and reducing penetration of liquid into the penetration portion 10 .

[5-3 Modifications]

(Variant 1 of the fifth implementation method)

In the cover body 201 of the fifth embodiment, as shown in FIGS. 23A and B , the top cover portion 202 and the side wall portion 203 may be formed of separate members. This aspect is called modification 1 of the fifth embodiment. Modification 1 of the fifth embodiment includes a case where a part of the member forming the top cover part 202 forms a part of the side wall part 203 and a case where a part of the member forming the side wall part 203 forms a part of the top cover part 202 . 23A and B show an example in which a part of the member forming the top cover part 202 forms a part of the side wall part 203.

The method of forming the cover 201 of the modification 1 of the fifth embodiment shown in FIGS. 23A and B will be described. For example, a roof portion forming member 222 having a first portion 231 for forming the roof portion 202 shown in FIGS. 23B, 25A, and B and a side wall portion forming member 223 for forming the side wall portion 203 are prepared. A joint margin portion 230 configured to be joinable to the side wall portion forming member 223 is extended as a second portion 232 from the outer end portion (outer edge portion) of the first portion 231 of the roof portion forming member 222 . The bent portion 204 is formed by bonding the joining allowance 230 of the top cover forming member 222 to the upper end of the side wall forming member 223 to join the top cover forming member 222 and the side wall forming member 223 . At this time, the cover 201 is formed. In this case, as the blank, as shown in FIGS. 25A and B , blanks for forming the roof portion forming member 222 and the side wall portion forming member 223 (referred to as the first blank 251 and the second blank 252 respectively) can be used. The first blank 251 used to form the top cover forming member 222 may be a sheet formed into a shape such that the joint margin 230 matches the shape of the top cover 202 . The second blank 252 has a shape corresponding to the shape of the side wall portion 203. For example, when the side wall portion 203 has a shape that decreases or expands in diameter toward the tip, a fan-shaped (formed in a partial fan-shaped shape) can be used. Sheet. The side wall portion forming member 223 that forms the side wall portion 203 can be obtained by joining the edge portions 253 and 253 at both ends of the second blank 252 .

In the first variation of the fifth embodiment, at least one blank selected from the group consisting of the first blank 251 and the second blank 252 can be formed in the same manner as the blank 30 described above. That is, at least one blank selected from the group consisting of the first blank 251 and the second blank 252 is formed by applying a paper material in the same manner as the blank 30. In the examples of FIG. 23A, B and FIG. 25A, B, the first blank and the second blank are applied with a paper material.

By using the first blank 251 and the second blank 252, the cover 201 can be manufactured as described below. The first blank 251 has the joint margin portion 230 bent downward. In addition, the first portion 231 of the first blank 251 is molded into a shape corresponding to the obstruction portion 288 and the step portion 289 to form a molded body. In addition, the first blank 251 forms the penetration portion 210 in the first portion 231 . The second blank 252 forms an annular body by joining the edge portions 253 and 253 at both ends thereof. The lid body 201 is obtained by joining the joint allowance 230 of the molded body formed of the first blank and the upper end vicinity of the inner circumferential surface of the annular body formed of the second blank by heat sealing or the like.

(Modification 2 of the fifth embodiment)

In the example of FIGS. 20A and 20B , the side wall portion 203 is formed so that its tip becomes tapered (the cross-sectional inner diameter becomes smaller (diameter reduction)) toward the lower side (in the −Z direction), but this is a preferred example. The side wall portion 203 may be formed such that its tip becomes thicker (the cross-sectional inner diameter becomes larger (diameter expansion)) toward the lower side. In addition, the side wall portion 203 may be formed so as to have a tip that is neither tapered nor thickened toward the lower side (a constant cross-sectional inner diameter). The side wall portion 203 may also have a portion that becomes thinner and thicker toward the lower side. (Modification 2 of the seventh example). The content shown in Modification 2 of the seventh example is also the same for the sixth to seventh embodiments described later. In addition, the cross-section represents the cross-sectional view of the side wall portion 203 when it is assumed that the side wall portion 203 is cut by a plane with the vertical direction as the normal line. The cross-sectional inner diameter indicates the diameter on the inner circumferential surface side when the cross-section (cross-section) is substantially annular.

(Variant 3 of the fifth implementation method)

The top cover portion 202 of the cover 201 of the fifth embodiment may have the structure described in the first embodiment and the second to fourth embodiments. Therefore, in Modification 3 of the fifth embodiment, As shown in FIGS. 27A and 27B , a groove portion 291 may be formed in the top cover portion 202 . 27A and 27B are perspective views and cross-sectional views schematically showing an example of the cover 201 according to Modification 3 of the fifth embodiment. In the example of the cover 201 shown in FIGS. 27A and 27B , the groove portion 291 may be the same as the groove portion 91 described in the second embodiment, and detailed description thereof will be omitted. In addition, the top cover part 202 may have a structure corresponding to the structure composed of the small opening part 6, the small cover part 3, the hinge part 4, and the base part 2. In addition, it is not prohibited to provide the cover 201 of the fifth embodiment with a structure corresponding to each modification example shown in the first to fourth embodiments. In the cover 201 of Modification 3 of the fifth embodiment, the structure of the insertion opening 219 may be omitted as long as there is a structure corresponding to the penetration portion 210 . When there is a structure corresponding to the through portion 210 , for example, a small through hole such as an exhaust hole is provided in the top cover portion 202 as the through portion 210 . The content shown in Modification 3 of the fifth embodiment is also the same for the sixth to seventh embodiments described later.

(Modification 4 of the fifth embodiment)

In the cover 201 of the fifth embodiment, as shown in FIGS. 24A and 24B , the bent portion 204 may be composed of an extension portion 226 . In addition, the convex part 225 may be formed in the end part (outer end part 228B) which is closer to the side wall part 203 among the ends (inner end part 228A, outer end part 228B) of the extension part 226, or in the vicinity.

(Protruding part)

In an example of the cover 201 of the modification 4 of the 7th example shown in Figures 24A to 24B, an extension portion 226 is formed as a structure (extending structure) in which a predetermined area on the outer peripheral end side of the top cover portion 202 protrudes in an oblique upward direction, but the extension direction of the extension portion 226 can also be an upward direction or a horizontal direction (a plane direction of the top cover portion 202). In addition, the inner surface 226A side of the extension portion 226 becomes a sunken portion (sunken portion 227). The shape of the sunken portion 227 is a shape corresponding to the shape of the extension portion 226. This can be achieved according to the shape of the mold when the cover 201 is formed from the blank 250. The size of the sunken portion 227 is preferably a size that can fit the edge 503 of the container 501. If the size of the sunken portion 227 is such a size, when the lid 201 is used as a container 500 with a lid attached, the edge 503 roughly enters the sunken portion 227, and the outer end portion of the edge 503 (in the example of Figures 24A and 24B, the outer peripheral surface 511 of the edge 503) can be in contact with the sunken portion 227 surface, making it easy to firmly install the lid 201 using the edge 503 of the container 501.

(convex part)

As shown in the examples of FIG. 24A to FIG. 24B , a convex portion 225 may also be formed on the side wall portion 203. The convex portion 225 is determined as, for example, a portion protruding in the inward direction (center CT direction, direction from the outer peripheral surface 203B of the side wall portion 203 toward the inner peripheral surface 203A) at a predetermined position of the side wall portion 203. The convex portion 225 is preferably a convex strip portion formed in a strip shape in a manner surrounding the inner peripheral surface of the side wall portion 203. A convex structure of the convex portion 225 may be formed on the inner peripheral surface side of the side wall portion 203, and a concave portion 224 may be formed on the outer peripheral surface 203B side of the side wall portion 203 at a position corresponding to the formation position of the convex structure. By forming such a structure, the shape of the side wall portion 203 can be made more stable.

[6 6th Embodiment]

[6-1 Composition]

As shown in Fig. 21A and Fig. 21B, the cover 201 of the sixth embodiment is the same as the fifth embodiment in that it has a top cover 202 and a side wall 203 and can be fitted into the container 501. In addition, in the sixth embodiment, the top cover 202 is provided with a penetration portion 210, an obstruction portion 288, and a height difference portion 289, but it can also be the same as the first to fifth embodiments, so the description is omitted. Fig. 21A and Fig. 21B are a perspective view and a cross-sectional view showing an example of the cover of the sixth embodiment.

The cover body 201 of the sixth embodiment has a structure in which a part of the side wall portion 203 extends toward the upper and lower sides of the top cover portion 202 . The side wall portion 203 has an annular (including cylindrical) shape, and has an upper wall 205 and a lower wall 206 . The lower wall 206 is directed toward the lower side of the top cover portion 202 (relative to the joint between the top cover portion 202 and the side wall portion 203 The upper wall 205 is a portion extending downward (downwards) from the lower end of the side wall portion 203 , except for the lower wall 206 . In the example of FIGS. 21A and 21B , the side wall portion 203 is formed to become tapered toward the lower side. In addition, in the examples of FIGS. 21A and B , the through portion 210 is formed at a predetermined position of the top cover 202 (in the example of FIG. 21A , approximately the center of the top cover 202 ), but this is an example.

(Members that form the top cover part and the side wall part respectively)

In the sixth embodiment, as in the second embodiment, the top cover portion 202 and the side wall portion 203 are formed of separate members. In the example of FIGS. 21A and 21B , the cover 201 has a top cover forming member 222 and a side wall forming member 223 as separate members, and has a means for joining the top cover forming member 222 and the side wall forming member 223 . joint.

(Top cover forming member)

The top cover forming member 222 has a first part (the first part 231 of the top cover forming member 222) corresponding to the top cover part 202, and a second part (the top cover part) extending from the outer peripheral end of the first part 231. The second portion 232 of the forming member 222 becomes the joint margin portion 230 shown in the second embodiment. In the example of FIG. 21A , the second portion 232 of the top cover forming member 222 is a portion that rises obliquely upward or directly upward from the outer peripheral end of the first portion 231 in the state of the cover 201 (rising portion). ), in a state where the second portion 232 is joined to the side wall portion forming member 223, the second portion 232 becomes a part of the side wall portion 203.

(Side wall forming member)

The side wall forming member 223 is formed in an annular shape (including a cylindrical shape) and has a portion (upper forming portion) forming the upper wall 205 and a portion (lower forming portion) forming the lower wall 206. The upper forming portion has a portion (first contact wall portion 233) that contacts at least on the outer surface side with the joint margin portion 230 of the second portion 232 that becomes the top cover forming member 222.

In the example of FIGS. 21A and 21B , the upper wall 205 (upper forming part) has a first contact wall part 233 that contacts the inner surface side with respect to the joint margin part 230 of the second part 232 that becomes the roof part forming member 222 (the second contact wall portion 234), and the continuous portion 235 connecting the first contact wall portion 233 and the second contact wall portion 234. The continuous portion 235 covers the remaining joint that becomes the second portion of the top cover forming member 222. The upper end surface of the measuring part 230. The lower end of the second contact wall portion 234 is located on the upper surface side of the first portion 231 of the roof portion forming member 222 and is slightly separated from the first portion 231 in the example of FIGS. 21A and B . However, this is an example, and the lower end of the second contact wall portion 234 may be in contact with the upper surface side of the first portion 231 of the roof portion forming member 222 .

In the example of FIGS. 21A and B , the lower wall 206 (lower forming part) is a portion extending downward (obliquely downward in FIGS. 21A and B ) with the lower end of the first contact wall 233 as the base end. . The lower wall 206 (lower forming portion) is preferably located below the lower surface of the first portion 231 of the roof portion forming member 222 with respect to the vertical position, for example.

(blank)

The cover 201 of the sixth embodiment can be formed by processing a blank. As the blank, a blank for forming the roof portion forming member 222 and the side wall portion forming member 223 (referred to as a first blank and a second blank, respectively, as described above in the fifth embodiment) can be used.

The first blank used to form the top cover portion forming member 222 may be the same as the first blank 251 described in the fifth embodiment, or may be formed so that the bonding margin portion 230 is further connected to the top cover portion 202 . The shape matches the shape of the sheet. The top cover forming member 222 is preferably formed by bending the first blank to form the first portion 231 and the rising portion (the second portion 232 serving as the joint margin) corresponding to the top cover 202 . That is, the second part 232 is preferably formed by placing the first blank at a position (connected to the peripheral edge of the first part 231 The base end of the combined margin portion 230 is formed by bending upward. At this time, the first blank may be molded into a shape corresponding to the obstruction part 288 and the step part 289, and a structure corresponding to the through part 210 may be provided.

The second blank used to form the side wall forming member 223 may be the same blank as the second blank 252 described above in the second embodiment, or may be a sheet formed in a fan shape. By joining the end edges of the second blank to form an annular body, and folding the upper end side portion of the annular body inward at a position corresponding to the continuous portion 235, the first contact wall portion 233, the second contact wall portion 234, and the continuous portion 235 can be formed, and the upper forming portion (the structural portion corresponding to the upper wall 205) and the lower forming portion (the structural portion corresponding to the lower wall 206) can be formed. The side wall forming member 223 is formed by forming the upper forming portion and the lower forming portion. In addition, at least the first contact wall portion 233 and the second contact wall portion 234 are bonded to the joint margin portion 230. In the example of FIG. 21B , the first contact wall portion 233, the second contact wall portion 234, and the continuous portion 235 are bonded to the joint margin portion 230 to form a bonding portion.

Furthermore, when manufacturing the cover body 201, it is preferred to perform the joining with the top cover forming member 222 in the state of the above-mentioned annular body formed from the second blank. That is, the lower end of the joining margin portion 230 (the second portion 232) of the top cover forming member 222 is aligned with the boundary position of the lower forming portion and the upper forming portion (the boundary position of the upper wall 205 and the lower wall 206) in the inner circumference of the annular body, so that the joining margin portion 230 faces the inner circumference of the annular body. Furthermore, by folding back the part of the upper end side of the annular body inward at the position corresponding to the continuous portion 235 in the annular body as described above, the joining margin portion 230 is covered from the upper end side. Then, the bonding margin portion 230 is bonded to the annular body that becomes the side wall portion forming member 223 in a manner of being clamped by the first contact wall portion 233 and the second contact wall portion 234. Thus, the side wall portion forming member 223 is formed and the cover body 201 is obtained.

〔6-2 Functions and effects〕

According to the cover 201 of the sixth embodiment, a cover capable of suppressing liquid leakage from the penetration portion 210 can be obtained, similarly to the first to fifth embodiments.

[7 7th Embodiment]

[7-1 Composition]

As shown in Fig. 22A and Fig. 22B, the cover 201 of the seventh embodiment is the same as the fifth and sixth embodiments in that it has a top cover 202 and a side wall 203 and can be fitted into the container 501. In addition, in the seventh embodiment, the top cover 202 is provided with a penetration portion 210, an obstruction portion 288, and a height difference portion 289, but it can also be the same as the first to sixth embodiments, and thus the description is omitted. Fig. 22A and Fig. 22B are a perspective view and a cross-sectional view showing an example of the cover of the seventh embodiment.

The cover body 201 of the seventh embodiment has a structure in which a part of the side wall portion 203 extends toward the upper side and the lower side of the top cover portion 202. The side wall portion 203 has a ring-shaped (including a cylindrical) shape, and has an upper wall 205 and a lower wall 206. The lower wall 206 is a portion extending toward the lower side of the top cover portion 202 (toward the lower side relative to the lower end of the joint portion between the top cover portion 202 and the side wall portion 203), and the upper wall 205 is composed of a portion of the side wall portion 203 other than the lower wall 206. In the example of FIG. 22A and FIG. 22B, the side wall portion 203 is formed in a manner that the top end becomes thinner toward the lower side. In addition, in the example of FIG. 22A and FIG. 22B , a penetration portion 210 is formed at a predetermined position of the top cover portion 202 (approximately the center of the top cover portion 202 in the example of FIG. 22A ), but this is only an example.

(Components that form the top cover and side wall respectively)

In the seventh embodiment, as described in the fifth and sixth embodiments, the top cover portion 202 and the side wall portion 203 are formed of separate members. In the example of FIGS. 22A and 22B , the cover 201 has a top cover forming member 222 and a side wall forming member 223 as separate members, and has a means for joining the top cover forming member 222 and the side wall forming member 223 . joint.

(Top cover forming member)

The top cover forming member 222 has a first part (the first part 231 of the top cover forming member 222) corresponding to the top cover part 202, and a second part (the top cover part) extending from the outer peripheral end of the first part 231. The second portion 232 of the forming member 222 becomes the bonding margin portion 230 described in the fifth and sixth embodiments. In the example of FIG. 22A , the second portion 232 of the top cover forming member 222 is a portion (hanging portion) extending obliquely downward or directly downward from the outer peripheral end of the first portion 231 . The second portion 232 is joined to In the state of the side wall forming member 223 , the second portion 232 becomes a part of the side wall 203 .

(Side wall forming component)

The side wall forming member 223 is formed in an annular shape (including a cylindrical shape) and has a portion (upper forming portion) forming the upper wall 205 and a portion (lower forming portion) forming the lower wall 206. The lower forming portion has a portion (lower first contact wall portion 237) that contacts at least on the outer surface side with the joint margin portion 230 of the second portion 232 that becomes the top cover forming member 222.

In the example of FIGS. 22A and B , the lower forming portion has a lower first contact wall portion 237 and a portion (lower portion) in contact with the inner surface side of the joint margin portion 230 of the second portion 232 that becomes the roof portion forming member 222 . second contact wall portion 238), and a lower end side continuous portion 239 connecting the lower first contact wall portion 237 and the lower second contact wall portion 238. The lower end side continuous portion 239 covers the second portion that becomes the top cover forming member 222 The lower end surface of the joint margin portion 230. The upper end of the lower second contact wall portion 238 is located on the lower surface (opposing surface 73) side of the first portion 231 of the roof portion forming member 222, and is preferably slightly separated from the first portion 231 in the example of FIGS. 22A and B . In addition, it is preferable that the edge portion 503 of the container 501 (for example, a part of the outer peripheral surface of the curled portion 508) can enter between the first portion and the upper end of the lower second contact wall portion 238.

In the example of Fig. 22A and Fig. 22B, the upper wall 205 (upper forming portion) is a portion extending upward (in Fig. 22B, obliquely upward) with the upper end of the lower first contact wall portion 237 as the base end. The upper wall 205 (upper forming portion) is preferably located, for example, on the upper side of the upper surface of the first portion 231 of the top cover forming member 222 in terms of the vertical direction. As shown in the example of Fig. 22A and Fig. 22B, the upper forming portion preferably has a curled portion (side wall upper end curled portion 236) formed on its upper end side. In this case, the end surface of the blank (the second blank for forming the side wall forming member 223) formed at the upper end of the upper forming portion can be prevented from being exposed, and even when the user puts the mouth to the end surface of the blank to suck the contents in the container 501, the discomfort caused by the user's mouth contacting the end surface of the blank can be suppressed. In addition, by forming the curled portion 236 at the upper end of the side wall, it is difficult for the liquid to contact the portion of the side wall portion 203 corresponding to the end surface of the blank.

(blank)

The cover body 201 of the seventh embodiment can be formed by processing a blank. As the blank, the blank used to form the top cover forming member 222 and the side wall forming member 223 (referred to as the first blank and the second blank, respectively, as described in the fifth and sixth embodiments) can be used. At least one blank selected from the group consisting of the first blank and the second blank can be formed in the same manner as the above-mentioned blank as described in the fifth embodiment, etc.

The first blank used to form the top cover forming member 222 may be the same blank as the first blank 251 described above in the fifth and sixth embodiments, or may be a sheet formed into a shape that further matches the shape of the joint margin portion 230 with the top cover portion 202. The top cover forming member 222 is preferably formed by bending the first blank to form a first portion 231 corresponding to the top cover portion 202 and a second portion 232 that serves as the joint margin portion. That is, the second portion 232 is preferably formed by bending the first blank downward at the periphery of the first portion 231. At this time, the first blank may be molded into a shape corresponding to the obstruction portion 288 and the height difference portion 289, and a structure corresponding to the penetration portion 210 may also be provided.

The second blank used to form the side wall forming member 223 may be the same as the second blank 252 described in the second embodiment, or may be a fan-shaped sheet. The lower first contact wall portion 237 and the lower second contact wall portion 237 can be formed by folding back the upper end side portion of the annular body inward at a position corresponding to the continuous portion 235 . The contact wall portion 238 and the lower end side continuous portion 239 can form a lower forming portion (lower wall 206) and an upper forming portion (upper wall 205). The side wall forming member 223 is formed by forming the lower forming part and the upper forming part.

Furthermore, when manufacturing the cover body 201, it is preferred to perform the joining with the top cover forming member 222 in the state of the above-mentioned annular body formed by the second blank. The lower end of the joining margin portion 230 (the second portion 232) of the top cover forming member 222 is aligned with the boundary position of the lower forming portion and the upper forming portion (the boundary position of the upper wall 205 and the lower wall 206) in the inner circumference of the annular body, so that the joining margin portion 230 faces the inner circumference of the annular body. Furthermore, the lower end side portion of the annular body is folded back inward at the position corresponding to the lower end side continuous portion 239 in the annular body as described above, thereby covering the joining margin portion 230 from the lower end side. Then, the bonding margin portion 230 is bonded (adhered) to the lower forming portion (forming the annular body of the side wall forming member 223) by being clamped by the lower first contact wall portion 237 and the lower second contact wall portion 238. Thus, the side wall forming member 223 is formed and the cover body 201 is obtained.

〔7-2 Function and effect〕

According to the cover 201 of the seventh embodiment, similarly to the first to sixth embodiments, a cover capable of suppressing leakage of liquid from the penetration portion 210 can be obtained.

Next, application examples of the cover will be explained.

〔8 Application examples〕

(Application example 1)

The lid 1 shown in the first to fourth embodiments of the lid can be used in a container 500 with a lid as shown in Figs. 17A and B (Application Example 1). Fig. 17A is a perspective view showing an embodiment in which the lid 1 of the first embodiment is joined to a container 501 having an opening 502 formed at the upper end, and an edge 503 formed on the outer periphery of the opening 502. Fig. 17B is a cross-sectional view schematically showing the state of the longitudinal section along the N-N line in Fig. 17A. The container 500 with a lid will be described further using Figs. 17A and B.

(container with lid)

As a container 500 with a lid, the case where the lid 1 of the first embodiment is mounted on the container 501 is described as an example. The container 500 with a lid forms a contact portion by mounting the container 501 on the lid 1. In the applicable example 1, the joint 651 formed by joining the container 501 and the lid 1 is formed as the contact portion, and the area of the lid 1 where the joint 651 is formed becomes the joint area R. The method of joining the lid 1 and the container 501 is not particularly limited, and a joining method such as a press-fit method and a heat-welding method (heat sealing) can be appropriately used.

In the example shown in FIGS. 17A and 17B , the container 501 has a container main body 510 having a cylindrical side wall 504 and a bottom 507 whose diameter becomes larger toward the upward direction (and whose tip becomes narrower toward the downward direction). A space portion 505 is formed inside; and an opening portion 502 is formed at the upper end of the container body 510 (the upper end of the side wall 504). Although not shown in the figure, the opening 502 of the container 501 is formed in a circular shape. However, the container 501 shown here is an example, and the structure of the container 501 is not limited. For example, the container 501 may have the opening 502 formed in a rectangular shape. The container 501 only needs to be able to cover the opening 502 with the lid 1 . In addition, the items stored in the interior of the container 501 (the space part 505) are not particularly limited, and examples thereof include liquid items, solid items, or a combination thereof.

In the container shown in FIG. 17A and FIG. 17B , the edge 503 of the opening 502 has a flange. The flange may be a rolled portion 508 formed by rolling up the member forming the container body 510 outward as shown in FIG. 17A and FIG. 17B , etc., or may be formed as a portion (curtain) extending outward on a plane.

In addition, the lid 1 can also be provided as a combination with a container 501 having an opening 502.

(Application example 2)

The lid 201 shown in the fifth to seventh embodiments can be used in a container 500 with a lid as shown in FIG26 (Application Example 2). FIG26 is a cross-sectional view showing an embodiment in which the lid 201 of the fifth embodiment is engaged with a container 501 having an opening 502 formed at the upper end and an edge 503 formed on the outer periphery of the opening 502. The container 500 with a lid of Application Example 2 will be described further using FIG26.

The lid 201 can be attached to the container 501 by fitting the lid 201 into the edge 503 formed around the outer periphery of the opening 502 of the container 501 having the opening 502 formed at the upper end. In this case, a contact portion can be formed as a portion that brings the container 501 and the cover 201 into contact (the portion that brings the edge portion 503 and the top cover portion 202 into contact). In addition, the structure of the container 501 can be the same as that of the container mentioned in Application Example 1, and a detailed description is abbreviate|omitted.

In addition, the lid 201 of the fifth embodiment may be combined with the container 501 having the opening 502 .

The contents shown in [8 Applicable Examples] above are not limited to the case of using the lid 1 of the first embodiment and the lid 201 of the fifth embodiment. For the second to fourth embodiments, they can also be used for a container 500 (not shown) with a lid body joined to a container 501 in the same manner as the lid 1 of the first embodiment. In addition, for the sixth to seventh embodiments, they can also be used for a container 500 (not shown) with a lid body joined to a container 501 in the same manner as the lid 201 of the fifth embodiment.

As described so far, the cover 1, 201, etc. of the present invention can be applied to such various forms of the cover 1, etc. In addition, it can also be applied to the cover 1, 201, etc. of forms other than the above. The cover of the present invention is described in detail above, but the above content is only an example of the cover of the present invention and is not limited to this. Therefore, it can also be appropriately changed within the scope of the main purpose of the present invention. In addition, the structure of the cover mentioned above can use the structure of the cover of each example independently, and can also be applied by appropriately combining the structure of the cover of each example.

Based on the above description of this manual, this creation can adopt the following structures [E1] to [E25].

[E1] A cover body formed in a manner capable of being joined to a container, the container having an opening formed at an upper end and an edge forming the outer periphery of the opening, the cover body having a joining region corresponding portion corresponding to a region joined to the container along the edge of the container, and a cover region corresponding portion composed of a portion located inside relative to the joining region corresponding portion, the cover region corresponding portion having an obstruction portion inside relative to the peripheral edge of the cover region corresponding portion, and having a step portion and a penetration portion at least in a portion located inside relative to the inner edge of the obstruction portion.

[E2] According to the cover body described in [E1] above, in the corresponding portion of the cover area, the through-hole portion is formed inside and/or on the inner side of the height difference portion.

[E3] According to the cover described in [E1] or [E2], the height direction positions of the penetration portion and the obstruction portion are different from each other.

[E4] In the cover according to any one of [E1] to [E3], the step portion is formed to surround the through portion.

[E5] A cover according to any one of [E1] to [E4] above, wherein a flat surface is formed on the inner side of the height difference portion.

[E6] In the cover body according to any one of [E1] to [E5] above, the height direction positions of the planar portion and the blocking portion are different from each other.

[E7] In the cover according to any one of [E1] to [E6] above, the height direction positions of the penetration portion and the obstruction portion are the same as each other.

[E8] A cover according to any one of [E1] to [E7], wherein an inclined portion is formed on the inner side of the height difference portion.

[E9] In the lid body according to any one of the above [E1] to [E8], at least a part of the wall portion in the step portion has a wavy shape.

[E10] According to the cover described in any one of [E1] to [E9] above, the height difference portion has a plurality of groove portions, and the bottoms of the plurality of groove portions are arranged concentrically.

[E11] In the lid body according to any one of the above [E1] to [E10], the step portion has a groove portion, and an uneven structure is formed in the groove portion.

[E12] According to the cover body described in any one of [E1] to [E11] above, the height difference portion has a groove portion, and when the corresponding portion of the cover area is viewed from above, the width of the groove portion is partially different.

[E13] In the lid body according to any one of the above [E1] to [E12], the step portion has a step portion.

[E14] According to the cover described in any one of [E1] to [E13] above, the step portion is formed with a groove portion.

[E15] According to the cover body described in any one of [E1] to [E14] above, a fragile portion is provided in the cover area corresponding portion to guide the split position in the cover area corresponding portion, and the fragile portion has a plurality of the penetration portions and at least one continuous portion formed between at least two of the penetration portions.

[E16] According to the cover described in any one of [E1] to [E15] above, the fragile portion has a plurality of the penetration portions formed in a radial shape around the continuous portion.

[E17] The cover body according to any one of the above [E1] to [E16], wherein the cover area corresponding part has: a base part having a small opening; a small cover part for opening and closing the small opening; and the above A hinge portion is connected to the base portion and the small cover portion, the small opening portion has an opening area smaller than the opening portion of the container, and the small cover portion is configured to be rotatable relative to the base portion with the hinge portion as an axis, at least a part of which is rotatable relative to the base portion. The through portion is formed at a boundary position between the outer peripheral edge of the small cover portion and the opening edge of the small opening portion.

[E18] According to the cover described in [E17] above, at least a portion of the penetration portion is formed in the height difference portion.

[E19] According to the lid body described in [E17] or [E18] above, a gripping portion is provided on the upper surface side of the aforementioned small lid portion.

[E20] In the lid body according to the above [E19], the grip part has a pull-tab member, and the pull-tab member is joined to the upper surface side of the small lid part.

[E21] The cover according to any one of the above [E1] to [E20], formed of paper material.

[E22] The cover body according to [E21] above, wherein a low-density portion is formed in a portion from the boundary between the obstruction portion and the step portion toward the step portion, wherein the density of the fibers constituting the paper material is lower than that of the obstruction portion.

[E23] According to the cover body described in any one of [E1] to [E22] above, the aforementioned obstruction portion and the aforementioned height difference portion are formed continuously.

[E24] A container with a lid, comprising: the lid according to any one of [E1] to [E23]; and the container having the opening formed at an upper end, the lid being joined to the container.

[E25] A combination of a lid and a container, which has: any one of the above [E1] to [E23] The lid; and the container having the opening formed at the upper end.

1: Cover

5A: Corresponding part of the joint area

5B: Covering area corresponding part

5C: Corresponding part of the outer area

8: Obstacle Department

8A:Inside end

9: Height difference part

10: Penetration

11: Plane part

11A: Outer edge

12: Insertion port

30: Blank

72: Show your face

73:Opposite side

74: Zhou Duanyan

90: Step difference section

90A: Wall

96: base end

97: The other end

CT: Center

R:Joint area

Claims (25)

A lid, characterized in that it is formed so as to be joinable to a container, the container has an opening formed at an upper end and an edge portion forming an outer circumference of the opening, and the lid has a joining area corresponding portion, Corresponding to a region that is joined to the container along the edge of the container; and a lid region corresponding portion, which is composed of a portion located inside with respect to the joint region corresponding portion, and the lid region corresponding portion is relative to the lid region corresponding portion The peripheral end edge has an obstruction portion on the inside, and at least a portion located on the inside with respect to the inner edge of the obstruction portion has a step portion and a penetration portion. The cover body as described in claim 1, wherein, in the corresponding portion of the cover area, the penetration portion is formed inside and/or inside the height difference portion. The cover body as described in claim 1, wherein the positions of the penetration portion and the obstruction portion in the height direction are different from each other. The cover according to claim 1, wherein the step portion is formed to surround the through portion. The cover body as described in claim 1, wherein a flat surface portion is formed on the inner side of the height difference portion. A cover as described in claim 5, wherein the positions of the plane portion and the obstruction portion in the height direction are different from each other. The cover body as described in claim 1, wherein the positions of the penetration portion and the obstruction portion in the height direction are the same as each other. The cover according to claim 1, wherein an inclined portion is formed inside the step portion. A cover as described in claim 1, wherein at least a portion of the wall portion in the height difference portion has a wavy shape. The cover body as described in claim 1, wherein the height difference portion has a plurality of groove portions, and the bottoms of the plurality of groove portions are arranged concentrically. The cover according to claim 1, wherein the step portion has a groove portion, and an uneven structure is formed in the groove portion. As described in claim 1, the height difference portion has a groove portion, and when the corresponding portion of the cover area is viewed from above, the width of the groove portion is partially different. The cover according to claim 1, wherein the level difference portion has a step portion. The cover according to claim 13, wherein the step portion is formed with a groove portion. The cover according to claim 1, wherein the cover area corresponding portion is provided with a weakened portion that guides a split position in the cover area corresponding portion, and the weakened portion has a plurality of the through portions, and is formed At least one continuous portion between at least two aforementioned through portions. The cover as described in claim 15, wherein the weakened portion has a plurality of the penetration portions formed in a radial pattern around the continuous portion. The lid body as described in claim 1, wherein the lid region corresponding portion comprises: a base portion having a small opening portion; a small lid portion for opening and closing the small opening portion; and a hinge portion for connecting the base portion and the small lid portion, wherein the small opening portion has an opening area smaller than the opening portion of the container, and the small lid portion is configured to be rotatable relative to the base portion with the hinge portion as an axis, and at least a portion of the penetration portion is formed at a boundary position between the outer periphery of the small lid portion and the opening edge of the small opening portion. The cover according to claim 17, wherein at least part of the through portion is formed in the step portion. The cover according to claim 17, wherein a gripping portion is provided on the upper surface side of the small cover portion. As described in claim 19, the aforementioned gripping portion has a pull-tab member, and the aforementioned pull-tab member is joined to the upper surface side of the aforementioned small cover portion. The cover according to claim 1, wherein the cover is made of paper material. The cover according to claim 21, wherein a fiber constituting the paper material is formed in a portion from the boundary between the obstruction portion and the step portion toward the step portion, with a fiber constituting the paper material having a density lower than that of the obstruction portion. low-density part. The cover according to claim 1, wherein the obstruction portion and the level difference portion are formed continuously. A container with a lid, which includes: the lid according to any one of claims 1 to 23; and the container having an opening formed at an upper end, and the lid is joined to the container. A combination of a lid and a container, comprising: the lid as described in any one of claims 1 to 23; and the aforementioned container having an opening formed at the upper end.

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