Lid for beverage container, method for forming a drinking spout on a lid for beverage container, and beverage container

Abstract

[Problem] To provide a beverage container lid with which it is possible to form a mouthpiece that allows a beverage to be drunk with ease without taking the beverage container lid off and without using a straw. [Solution] A beverage container lid 1 provided with a cover plate part 4 covering an opening 3 of a beverage container 2 and a side circumferential part 5 capable of engaging with the edge 3a of the opening 3, the beverage container lid 1 being provided with: a mouthpiece formation line 11, which is the peripheral-edge-side mouthpiece 110 on the peripheral edge side of the cover plate part 4; a fold low-strength part 12 having a strength lower than that of a regular part of the cover plate part 4, the fold low-strength part 12 facilitating a collapse by a mountain fold between a mouthpiece formation outer portion 11A and a mouthpiece formation inner portion 11B enclosed by the mouthpiece formation line 11, when the mouthpiece formation portions 11A, 11B are pressed in from above; and an engaging part capable of engaging with a latching part 11c at the peripheral edge of the mouthpiece formation outer portion 11A in a state in which the mouthpiece formation inner portion 11B is valley-folded and raised and the mouthpiece formation outer portion 11A and the mouthpiece formation inner portion 11B are collapsed.

Description

[Technical Field]

[0001] The present invention relates to a lid for a beverage container that covers an opening of a beverage container, a method for forming a drinking spout of the lid for a beverage container, and a beverage container equipped with the lid for a beverage container. [Background technology]

[0002] Traditionally, many beverage retailers, such as fast food restaurants and convenience stores, have covered the openings of beverage containers, such as plastic (synthetic resin) or paper cups, with beverage container lids to prevent the juice, coffee, or other beverages contained inside from spilling out of the openings when the containers are carried.

[0003] To drink the beverage contained inside the beverage container, one can simply remove the beverage container lid and drink from the opening, but when the beverage container lid is removed, the beverage adhering to the inside of the lid may splash out, potentially staining the drinker's clothes, etc.

[0004] For this reason, it is common to provide a straw insertion portion on a lid for a beverage container, and insert an attached straw into the lid to make it easier to drink the beverage inside the beverage container (see Patent Document 1, etc.).

[0005] However, in recent years, the global movement to eliminate plastic has been gaining momentum, triggered by issues such as marine pollution caused by plastic waste, and as part of this, there has also been a growing movement to eliminate plastic straws.

[0006] Under these circumstances, there is a demand in the market for a lid for a beverage container that does not require a straw and can form a drinking spout that makes it easy to drink a beverage without removing the lid. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2021-14286 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention was devised in light of the above-mentioned background, and its purpose is to provide a lid for a beverage container that eliminates the need for a straw and can form a drinking spout that makes it easy to drink from the beverage without removing the lid, a method for forming a drinking spout on this beverage container lid, and a beverage container equipped with this beverage container lid. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, the inventors have developed a lid for a beverage container, which includes a cover plate portion that covers an opening of a beverage container, and a side periphery portion that is provided on the outer periphery of the cover plate portion and that can engage with the edge of the opening of the beverage container when the cover plate portion is made to cover the opening of the beverage container, and the lid further includes a drinking spout forming line portion that is provided on the peripheral side of the cover plate portion and is the shape of the peripheral side of the drinking spout for forming the drinking spout, the drinking spout forming line portion being made of a cut line portion or a low-strength portion that is weaker than the general part of the cover plate portion, and a drinking spout shape surrounded by the drinking spout forming line portion. We have invented a lid for a beverage container, which is equipped with a low-strength folding portion that is weaker than the general portion of the cover plate portion, so that when the forming portion is pushed in from above, the portion for forming the drinking spout can be easily folded by mountain folds between the outer portion for forming the drinking spout on the outer peripheral edge of the cover plate portion and the inner portion for forming the drinking spout inside the cover plate portion, and an engaging portion that can engage with a locking portion on the periphery of the outer portion for forming the drinking spout when the inner portion for forming the drinking spout is folded up by a valley fold.

[0010] The lid for a beverage container according to the first invention is a lid for a beverage container comprising a cover plate portion that covers an opening of a beverage container, and a side peripheral portion provided on the outer periphery of the cover plate portion and that can engage with the edge of the opening of the beverage container when the cover plate portion is made to cover the opening of the beverage container, and a drinking spout forming line portion that is provided on the peripheral side of the cover plate portion and is shaped like the peripheral side of the drinking spout for forming a drinking spout, and is made of a cut line portion or a low-strength portion that is lower in strength than the general part of the cover plate, and when the drinking spout forming portion surrounded by the drinking spout forming line portion is pressed from above, and a low-strength folding section having a lower strength than the general section of the cover plate to facilitate mountain folding between the outer spout-forming section on the outer peripheral edge side of the cover plate and the inner spout-forming section inside the cover plate in the drinking spout-forming section, and an engaging section that can engage with a locking section on the periphery of the outer spout-forming section when the inner spout-forming section is raised by a valley fold and the outer spout-forming section and the inner spout-forming section are folded over, and the end of the outer spout-forming section on the outer peripheral edge side of the cover plate at the side of the outer spout-forming section is widened, Between the inner ends of the drinking spout forming line portion in the drinking spout forming portion of the cover plate portion, a valley fold low strength portion having lower strength than the general portion of the cover plate portion is provided to facilitate the valley fold of the raised drinking spout forming inner portion, and when the distance between the folding low strength portion and the valley fold low strength portion is A, the distance between the locking portion and the folding low strength portion is B, and the thickness of the cover plate portion is X, X≦BA≦2 (mm) is satisfied. It is characterized by:

[0011] The lid for a beverage container according to the second invention is a lid for a beverage container comprising a cover plate portion that covers an opening of a beverage container, and a side peripheral portion provided on the outer periphery of the cover plate portion and that can engage with the edge of the opening of the beverage container when the cover plate portion is made to cover the opening of the beverage container, and a drinking spout forming line portion that is provided on the peripheral side of the cover plate portion and is shaped like the peripheral side of the drinking spout for forming a drinking spout, and is made of a cut line portion or a low-strength portion that is weaker than the general part of the cover plate portion, and when the drinking spout forming portion surrounded by the drinking spout forming line portion is pressed from above, and a low-strength folding section having a lower strength than the general section of the cover plate to facilitate mountain folding between the outer spout-forming section on the outer peripheral edge side of the cover plate and the inner spout-forming section inside the cover plate in the drinking spout-forming section, and an engaging section that can engage with a locking section on the periphery of the outer spout-forming section when the inner spout-forming section is raised by a valley fold and the outer spout-forming section and the inner spout-forming section are folded over, and the end of the outer spout-forming section on the outer peripheral edge side of the cover plate at the side of the outer spout-forming section is widened, The engaging portion is formed at a narrowed portion of the widened portion formed by widening the end portion of the outer peripheral edge of the cover plate portion at the side of the outer region for forming the drinking spout, and is capable of engaging with the edge of the drinking spout as the engaging portion, and the width between the engaging portions is the same as the width of the engaging portion. It is characterized by:

[0012] The lid for a beverage container according to the third invention is First Invention In the present invention, the valley fold low strength portion is formed by providing perforations.

[0013] The lid for a beverage container according to a fourth invention is any one of the first to third inventions, characterized in that the folding low strength portion is formed by providing perforations.

[0014] The lid for a beverage container according to the fifth invention is characterized in that, in the first invention, the locking portion is formed as a notch at the end portion on the outer edge side of the cover plate portion on the side of the outer part for forming the drinking spout, and the edge of the drinking spout can be engaged as the engaging portion.

[0015] The lid for a beverage container according to a sixth aspect of the present invention is any one of the first to fifth aspects of the present invention, characterized in that a plurality of the locking portions are provided.

[0016] The lid for a beverage container according to the seventh invention is characterized in that, in any of the first to sixth inventions, the drinking spout forming line portion consists of a cut line portion, and the side portion of the outer part for forming the drinking spout and the cover plate portion around the side portion of the outer part for forming the drinking spout are connected by one or more connecting portions.

[0017] The lid for a beverage container according to an eighth aspect of the present invention is the lid for a beverage container according to any one of the first to seventh aspects of the present invention, characterized in that the lid for a beverage container is made of paper.

[0018] The method for forming a drinking spout on a lid for a beverage container according to the ninth invention is a method for forming a drinking spout on a lid for a beverage container according to any of the first to seventh inventions, characterized in that the drinking spout is formed by the following steps: pushing the drinking spout-forming portion from above with a finger; folding the drinking spout-forming outer portion and the drinking spout-forming inner portion of the drinking spout-forming portion in a mountain fold with a finger, and lifting the drinking spout-forming inner portion in a valley fold with a finger; and engaging the locking portion on the periphery of the drinking spout-forming outer portion with the engaging portion with a finger.

[0019] A beverage container according to a tenth aspect of the present invention is characterized by comprising a beverage container lid according to any one of the first to eighth aspects of the present invention.

[0020] The beverage container according to an eleventh aspect of the present invention is the beverage container according to the tenth aspect of the present invention, characterized in that the beverage container is made of paper. [Effects of the Invention]

[0022] According to the present invention having the above-described configuration, a drinking spout that makes it easy to drink a beverage can be formed without using a straw and without removing the lid for the beverage container. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is an exploded perspective view of a beverage container according to an embodiment of the present invention. [Figure 2] 2(a) and 2(b) are explanatory views showing a stepwise method for forming a drinking spout of a lid for a beverage container according to an embodiment of the present invention. [Figure 3] 3(a) and 3(b) are explanatory views showing a stepwise method for forming a drinking spout of a lid for a beverage container according to an embodiment of the present invention. [Figure 4] 4(a) and 4(b) are explanatory views showing a stepwise method for forming a drinking spout of a lid for a beverage container according to an embodiment of the present invention. [Figure 5] FIG. 5 is an explanatory diagram illustrating design conditions for a lid for a beverage container according to an embodiment of the present invention. [Figure 6] 6(a) and 6(b) are explanatory diagrams illustrating design conditions for a lid for a beverage container according to an embodiment of the present invention. [Figure 7] 7(a) to 7(f) are explanatory views showing the main parts of the lid for a beverage container according to the first embodiment of the present invention. [Figure 8] 8(a) to 8(f) are explanatory views showing the main parts of a lid for a beverage container according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

[0025] [Embodiment] First, a beverage container 2 according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is an exploded perspective view of a beverage container 2 according to an embodiment of the present invention.

[0026] As shown in Figure 1, a beverage container 2 according to an embodiment of the present invention is a cylindrical paper cup with a bottom that is made of paper and has an opening 3 with a rim 3a at the top, and is often used to hold and sell beverages 6 such as juice or coffee.

[0027] The beverage container 2 is not limited to being made of paper, but may be made of other materials such as plastic. When the beverage container 2 is made of plastic, an environmentally friendly biodegradable plastic may be used.

[0028] The beverage container 2 is used for selling the beverage 6 by closing the opening 3 with the beverage container lid 1.

[0029] The lid 1 for a beverage container is made of paper and includes a disk-shaped cover plate portion 4 that covers the opening 3 of the beverage container 2, and a side peripheral portion 5 that is provided on the outer peripheral edge of the cover plate portion 4 and can engage with the edge portion 3a of the opening 3 of the beverage container 2 when the cover plate portion 4 is arranged to cover the opening 3 of the beverage container 2.

[0030] The beverage container lid 1 is not limited to being made of paper, but may be made of other materials such as plastic. When the beverage container lid 1 is made of plastic, an environmentally friendly biodegradable plastic may be used.

[0031] The cover plate 4 has a drinking spout forming line 11 on its periphery, which is a roughly U-shaped cut line that is the shape of the periphery of the drinking spout 110 for forming the drinking spout 110 (see also Figure 4). Note that this drinking spout forming line 11 may be implemented by providing a low-strength portion that is weaker than the general portion of the cover plate 4, by providing perforations or reducing the thickness instead of a cut line.

[0032] In addition, when the drinking spout forming areas 11A, 11B surrounded by the drinking spout forming line portion 11 of the cover plate portion 4 are pressed from above, a low-strength folding portion 12 having lower strength than the general portion of the cover plate portion 4 is provided to facilitate folding by mountain folds between the drinking spout forming outer area 11A on the outer edge side of the cover plate portion 4 and the drinking spout forming inner area 11B inside the cover plate portion 4 in the drinking spout forming areas 11A, 11B.

[0033] Specifically, the folding low-strength portion 12 is formed by providing perforations. Note that the folding low-strength portion 12 can also be implemented by providing a low-strength portion that is lower in strength than the general portion of the cover plate portion 4 by reducing the thickness, etc.

[0034] In addition, a low-strength valley-folding portion 13 having lower strength than the general portion of the cover plate portion 4 is provided between the inner ends of the drinking spout-forming line portion 11 in the drinking spout-forming inner portion 11B of the cover plate portion 4 to facilitate valley folding of the raised drinking spout-forming inner portion 11B.

[0035] Specifically, the valley fold low strength portion 13 is formed by providing perforations. Note that the valley fold low strength portion 13 may be provided by reducing the thickness by providing a ruled line or the like, or may be implemented without providing any lines.

[0036] Furthermore, the inner part 11B for forming the drinking spout is raised by a valley fold, and a locking portion 11c is provided on the periphery of the outer part 11A for forming the drinking spout when the outer part 11A for forming the drinking spout and the inner part 11B for forming the drinking spout are folded together, and an engaging portion is provided that can engage with this locking portion 11c.

[0037] Specifically, the engaging portion 11c is formed in the narrowed portion of the widened portion, which is formed by widening the end portion on the outer edge side of the cover plate portion 4 in an approximately elliptical shape on the side of the outer portion 11A for forming the drinking spout, and is capable of engaging with the edge of the drinking spout 110 as an engaging portion (see also Figure 4).

[0038] Furthermore, the outer side portion 11A for forming the drinking spout and the cover plate portion 4 surrounding the sides of the outer side portion 11A for forming the drinking spout are connected by left and right connecting portions 11a and an upper connecting portion 11b, so that the outer side portion 11A for forming the drinking spout and the inner side portion 11B for forming the drinking spout do not sink due to their own weight, etc. The number and positions of these connecting portions 11a and 11b are not limited to those described above, and they may be omitted in practice.

[0039] Next, a method for forming a drinking spout on a lid for a beverage container according to an embodiment of the present invention will be described with reference to Figures 2 to 4. Figures 2 to 4 are explanatory diagrams showing the step-by-step method for forming a drinking spout on a lid for a beverage container according to an embodiment of the present invention.

[0040] First, as shown in Figures 2(a) and 2(b) to 3(a) and 3(b), when the outer region 11A for forming the drinking spout is pressed from above with a finger such as the thumb or index finger, a mountain fold is formed at the folding low strength portion 12 between the outer region 11A for forming the drinking spout and the inner region 11B for forming the drinking spout.

[0041] Furthermore, when the outer region 11A for forming the drinking spout is pushed inward of the cover plate portion 4 with a finger such as the thumb or index finger, the inner region 11B for forming the drinking spout is valley folded at the valley fold low strength portion 13 and lifted up.

[0042] Then, as shown in Figures 4(a) and 4(b), when the outer part 11A for forming the drinking spout is further pushed inward into the cover plate part 4 with a finger such as the thumb or index finger, the outer part 11A for forming the drinking spout and the inner part 11B for forming the drinking spout are folded in a mountain fold, and the engaging part 11c of the outer part 11A for forming the drinking spout engages with the edge of the drinking spout 110, which is the engaging part, thereby forming the drinking spout 110.

[0043] Next, with reference to FIGS. 5 and 6, the design conditions of the lid 1 for a beverage container according to an embodiment of the present invention will be described. FIGS. 5 and 6 are explanatory diagrams illustrating the design conditions of the lid 1 for a beverage container according to an embodiment of the present invention.

[0044] Here, in the lid 1 for a beverage container illustrated in FIGS. 5 and 6, A is the distance between the low-strength portion 12 for folding and the low-strength portion 13 for valley folding, and B is the distance between the locking portion 11c and the low-strength portion 12 for folding.

[0045] Considering the thickness of the cover plate portion 4 and the like in the lid 1 for a beverage container, the following results are obtained.

[0046] When A < B and B is made longer than A by, for example, more than 2 mm, the outer portion 11A for forming a drinking opening and the inner portion 11B for forming a drinking opening can be completely folded, but the locking portion 11c cannot be engaged with the edge of the drinking opening 110 which is the engaging portion.

[0047] Also, when A ≥ B, the locking portion 11c gets caught in the middle of the edge of the drinking opening 110, and in a state where the outer portion 11A for forming a drinking opening and the inner portion 11B for forming a drinking opening are completely folded, the locking portion 11c cannot be properly engaged with the edge of the drinking opening 110 which is the engaging portion.

[0048] Therefore, when A < B and B is set to be 0.3 mm or more and 2 mm or less than the thickness of the cover plate portion 4, for example, the locking portion 11c does not get caught in the middle of the edge of the drinking opening 110, and in a state where the outer portion 11A for forming a drinking opening and the inner portion 11B for forming a drinking opening are completely folded, the locking portion 11c can be properly engaged with the edge of the drinking opening 110 which is the engaging portion.

[0049] However, as shown in FIG. 6(a), even when A < B, although it is possible to satisfy the function, it is important to satisfy the following conditions in order to properly engage the locking portion 11c with the edge of the drinking opening 110 which is the engaging portion.

[0050] For example, as shown in FIG. 6(b), when A is 15 mm, if B = 1.28A, then B ≈ 19 mm, leaving a surplus of about 4 mm, and the locking portion 11c cannot be engaged with the edge of the drinking opening 110 which is the engaging portion.

[0051] Therefore, if the thickness of the cover plate portion 4 is X and the formula X ≤ B - A ≤ 2 (unit: mm) is satisfied, even when A < B, the function can be satisfied.

[0052] Of course, the design conditions of this lid 1 for a beverage container are merely illustrative, and various designs can be implemented.

[0053] According to the embodiment of the present invention described above, with the above-described configuration, it is possible to form a drinking opening 110 through which the beverage 6 can be easily drunk without removing the straw and without removing the lid 1 for a beverage container.

[0054] Moreover, in the embodiment of the present invention, since both the lid 1 for a beverage container and the beverage container 2 are made of paper, except for adhesives and the like used, it is possible to substantially completely eliminate plastics.

[0055] Also, according to the method for forming a drinking opening of the lid for a beverage container according to the embodiment of the present invention, the drinking opening 110 of the lid 1 for a beverage container can be easily formed by the above-described simple procedure.

[0056] [Example 1] Next, the lid 1 for a beverage container according to Example 1 of the present invention will be described with reference to FIGS. 7(a) to 7(f). FIGS. 7(a) to 7(f) are explanatory views respectively showing the main parts of the lid 1 for a beverage container according to Example 1 of the present invention.

[0057] The lid 1 for a beverage container according to Example 1 of the present invention is mainly different from the lid 1 for a beverage container according to the above-described embodiment in that the shape of the end portion on the outer peripheral edge side of the cover plate portion 4 on the side of the outer portion 11A for forming a drinking opening is different. Therefore, this point will be mainly described, and the same components will be denoted by the same reference numerals and the description thereof will be omitted.

[0058] As shown in Figures 7(a) to 7(f), this beverage container lid 1 differs from the beverage container lid 1 of the embodiment in that the shape of the end portion on the outer peripheral edge side of the cover plate portion 4 on the side of the outer region 11A for forming the drinking spout is not elliptical.

[0059] Specifically, it is as follows:

[0060] In the lid 1 for a beverage container shown in FIG. 7(a), the shape of the end portion on the outer peripheral edge side of the cover plate portion 4 on the side of the outer drinking spout-forming portion 11A is rectangular.

[0061] In the lid 1 for a beverage container shown in FIG. 7(b), the shape of the end portion on the outer peripheral edge side of the cover plate portion 4 on the side of the outer region 11A for forming the drinking spout is rectangular with chamfered corners.

[0062] In the lid 1 for a beverage container shown in FIG. 7(c), the end portion on the outer peripheral edge side of the cover plate portion 4 on the side of the outer region 11A for forming the drinking spout has a tapered shape that widens towards the tip.

[0063] In the beverage container lid 1 shown in Fig. 7(d), the entire side of the outer region 11A for forming the drinking spout has a tapered shape that widens toward the tip, including the end on the outer peripheral edge side of the cover plate 4. Furthermore, the locking portion 11c is formed as a notch.

[0064] In the lid 1 for a beverage container shown in FIG. 7(e), the shape of the end portion on the outer peripheral edge side of the cover plate portion 4 on the side of the outer region 11A for forming the drinking spout is an arrow shape pointing to the tip.

[0065] In the lid 1 for a beverage container shown in FIG. 7(f), the shape of the end portion on the outer peripheral edge side of the cover plate portion 4 on the side of the outer region 11A for forming the drinking spout is an arrow shape with a flat tip.

[0066] [Example 2] Next, a lid 1 for a beverage container according to a second embodiment of the present invention will be described with reference to Figures 8(a) to 8(f). Figures 8(a) to 8(f) are explanatory views showing main parts of the lid 1 for a beverage container according to the second embodiment of the present invention.

[0067] The lid 1 for a beverage container according to Example 2 of the present invention differs from the lid 1 for a beverage container according to Example 1 described above mainly in that the number of locking portions 11a is different, so this point will be mainly explained, and the same components will be given the same symbols and explanations will be omitted.

[0068] The beverage container lid 1 of this Example 2 differs from the beverage container lid 1 of Example 1 in that, as shown in Figures 8(a) to 8(f), there is no right-side locking portion 11a and the shape of the outer portion 11A for forming the drinking spout is approximately L-shaped.

[0069] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0070] 1 Beverage container lid 11 Line part for forming spout 11A Outer part for forming mouthpiece 11B Inner part for forming mouthpiece 11a,11b Connecting part 11c Locking part 12 Low strength section for folding 13 Low strength part for valley fold 2 Beverage containers 3 Opening 3a Edge of opening 4 Cover plate part 5 Side circumference 6 Beverages

Claims

1. A lid for a beverage container comprising: a cover plate portion that covers an opening of the beverage container; and a side periphery portion that is provided on the outer periphery of the cover plate portion and that can engage with the edge of the opening of the beverage container when the cover plate portion covers the opening of the beverage container, A drinking spout forming line portion is provided on the peripheral side of the cover plate portion and is the shape of the peripheral side of the drinking spout for forming a drinking spout, and is made of a cut line portion or a low-strength portion having lower strength than the general part of the cover plate portion; a low-strength folding portion having a lower strength than the general portion of the cover plate portion, for facilitating mountain folding between the outer portion for forming the drinking spout on the outer peripheral edge side of the cover plate portion and the inner portion for forming the drinking spout inside the cover plate portion when the drinking spout forming portion surrounded by the drinking spout forming line portion is pressed from above; The inner part for forming the drinking spout is raised by a valley fold, and further, the outer part for forming the drinking spout and an engaging part that can engage with a locking part on the periphery of the outer part for forming the drinking spout when the inner part for forming the drinking spout is folded, The end portion on the outer peripheral edge side of the cover plate portion in the side portion of the outer portion for forming the drinking spout is widened, Between the inner ends of the drinking spout forming line portion in the drinking spout forming portion of the cover plate portion, a valley folding low strength portion having a strength lower than that of the general portion of the cover plate portion is provided to facilitate the valley folding of the raised drinking spout forming inner portion, A is the distance between the folding low strength portion and the valley fold low strength portion, The distance between the locking portion and the folding low strength portion is B, When the thickness of the cover plate portion is X, X≦B-A≦2 (mm) must be satisfied. A lid for a beverage container, characterized by:

2. A lid for a beverage container comprising: a cover plate portion that covers an opening of the beverage container; and a side periphery portion that is provided on the outer periphery of the cover plate portion and that can engage with the edge of the opening of the beverage container when the cover plate portion covers the opening of the beverage container, A drinking spout forming line portion is provided on the peripheral side of the cover plate portion and is the shape of the peripheral side of the drinking spout for forming a drinking spout, and is made of a cut line portion or a low-strength portion having lower strength than the general part of the cover plate portion; a low-strength folding portion having a lower strength than the general portion of the cover plate portion, for facilitating mountain folding between the outer portion for forming the drinking spout on the outer peripheral edge side of the cover plate portion and the inner portion for forming the drinking spout inside the cover plate portion when the drinking spout forming portion surrounded by the drinking spout forming line portion is pressed from above; The inner part for forming the drinking spout is raised by a valley fold, and further, the outer part for forming the drinking spout and an engaging part that can engage with a locking part on the periphery of the outer part for forming the drinking spout when the inner part for forming the drinking spout is folded, The end portion on the outer peripheral edge side of the cover plate portion in the side portion of the outer portion for forming the drinking spout is widened, The engaging portion is formed in a narrowed portion of the widened portion obtained by widening the end portion on the outer peripheral edge side of the cover plate portion in the side portion of the outer portion for forming the drinking spout, and is capable of engaging with the edge of the drinking spout as the engaging portion, The width between the locking portions and the width of the engaging portion are the same. A lid for a beverage container, characterized by:

3. The low strength portion for valley folding is formed by providing perforations. The lid for a beverage container according to claim 1,

4. The folding low strength portion is formed by providing perforations. The lid for a beverage container according to any one of claims 1 to 3, characterized in that

5. The engaging portion is formed as a notch at the end of the outer peripheral edge of the cover plate portion on the side of the outer portion for forming the drinking spout, and is capable of engaging with the edge of the drinking spout as the engaging portion.

2. The lid for a beverage container according to claim 1,

6. The locking portion is provided in plurality. The lid for a beverage container according to any one of claims 1 to 5, characterized in that

7. The drinking spout forming line portion is made of a cut line portion, The side portion of the outer portion for forming the drinking spout and the cover plate portion around the side portion of the outer portion for forming the drinking spout are connected by one or more connecting portions. The lid for a beverage container according to any one of claims 1 to 6, characterized in that

8. The lid for the beverage container is made of paper. The lid for a beverage container according to any one of claims 1 to 7, characterized in that

9. A method for forming a drinking spout of a lid for a beverage container according to any one of claims 1 to 8, A step of pressing the drinking spout forming portion from above with a finger; a step of folding the outer portion for forming the drinking spout and the inner portion for forming the drinking spout together with fingers, and lifting the inner portion for forming the drinking spout by folding it in a valley; and engaging the engaging portion of the outer edge of the drinking spout forming portion with a finger, thereby forming the drinking spout. A method for forming a drinking spout on a lid for a beverage container, comprising:

10. The beverage container lid according to any one of claims 1 to 8 is provided. A beverage container characterized by:

11. The beverage container is made of paper.

11. The beverage container of claim 10.

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