WO2007110897A1

WO2007110897A1 - Paper-made lid for paper-made container

Info

Publication number: WO2007110897A1
Application number: PCT/JP2006/305938
Authority: WO
Inventors: Ryoji Hidaka
Original assignee: Pic Co., Ltd.
Priority date: 2006-03-24
Filing date: 2006-03-24
Publication date: 2007-10-04

Abstract

[PROBLEMS] A paper-made lid for a paper-made container, capable of being produced at extremely low cost without causing an environmental problem when it is discarded. [MEANS FOR SOLVING PROBLEMS] The lid (16) is used to cover the paper-made container (50) having a curled section (52) curled outward at the upper edge of a circular conical body section (5) expanded upward. The lid is essentially made of paper and has a wall face section (33) having a circular conical outer face engaging with the inner face of the circular conical body section of the paper-made container (50); a curled section (33c) of the lid, curled outward at the upper edge of the wall face section (33); and a top lid section (15) provided inside the wall face section. The lower edge of the wall face section is bent and the top lid section is fixed at a position above the lower edge.

Description

Specification

Paper lids for paper containers

Technical field

[0001] The present invention relates to a paper lid for a paper container. More specifically, the present invention relates to a paper container such as a paper cup that has a conical body portion that is expanded upward, a curl portion that is formed by being swung outwardly at the upper edge portion of the main body portion, and a force. It relates to a cover made of paper.

Background art

[0002] Paper containers such as the paper cups described above are widely used in various applications. For example, it is used for drinking water, coffee, tea, soft drinks such as colas, cups for serving snacks, containers for dissolving soup powder, and even larger paper containers. It is used to serve shaved ice and in some cases alcoholic drinks.

[0003] In a container such as a paper cup, a force that may be used while the contents are put in the container is covered. In order to prevent the contents from overflowing during movement, a cover is placed on the upper surface of the container. It is widely done.

Disclosure of the invention

Problems to be solved by the invention

[0004] However, as such a lid, a plastic lid has heretofore been put into practical use exclusively. If the lid is made of plastic, it will cause environmental problems, so even if the container body such as a cup is made of paper, the plastic lid cannot be discarded with the container. . When disposing of the container after use, it is necessary to separate the paper container body and the plastic lid separately and dispose of them in order to eliminate environmental problems, which is very troublesome and cumbersome.

[0005] Therefore, in order to eliminate such time and effort and to make it possible to dispose of a container such as a cup and a lid together, it is considered to use a paper lid.

[0006] For example, in Patent Document 1 (Utility Model Registration No. 3101102), a ring flange at the upper end of a cup and a circular top plate portion are in close contact with each other, and a flange having an inner diameter of a side hanging portion that hangs around the top plate portion. A paper lid has been proposed which has the same diameter as the outer diameter of the die and can be fitted in close contact with the flange.

[0007] Further, Patent Document 2 (Japanese Patent Application Laid-Open No. 2002-212617) discloses a cup-shaped container having an outward curled portion at an opening edge, a lid member thermally bonded to the opening edge of the cup-shaped container, A container comprising a fitting lid attached to an opening edge of the cup-shaped container to which a lid member is thermally bonded, wherein the fitting lid comprises a top plate and a cylindrical side plate; A cup-shaped container with a fitting lid is disclosed, which is characterized in that a cut line for forming an outlet is formed.

[0008] The lid member of Patent Document 1 is intended to tightly engage a lid having a side hanging portion for hanging the lid around the ring-shaped flange on the upper end of the cup. The lid having such a shape is made of paper. In fact, it is not easy to make, and the ring-shaped flange at the top of the cup and the lid do not adhere well, and the lid functions when the lid is only touched by the top flange and the disc of the lid. If the container such as a cup turns sideways while moving, the liquid inside will leak.

[0009] In addition, in the case of Patent Document 2, a circular blank plate having a paperboard force in which a plurality of creases facing the center are formed on the peripheral portion, and a peripheral portion on which the presser foot is formed is a fold. The example described in the examples is composed of a configuration in which a circular top plate and a cylindrical side plate are formed by narrowing down along the side plate, and the inner side plate is formed by folding back the tip of the side plate inwardly. Speak. However, even with this configuration, the upper edge of the cup and the lid cannot be tightly fitted, and it is not easy to prevent liquid leakage, and manufacturing requires special machines. Cost is high.

Patent Document 3 (Utility Model Registration No. 3080882) discloses a paper cup lid having a ring-shaped edge at its upper end,

The lid includes a ring-shaped outer wall portion that fits into an inner peripheral portion of the upper end portion of the paper cup, and includes an inner piece and a lower bottom portion force of the inner piece, and a circular bottom piece bent inward in the radial direction. A circular concave plate

A ring-shaped flange that is continuous with the top of the ring-shaped outer wall of the concave plate, is bent outward, and faces the ring-shaped edge of the paper cup; The ring-shaped outer piece comprises a ring-shaped outer piece that is bent downward continuously to the outer diameter portion of the ring-shaped flange portion and surrounds the outer periphery of the ring-shaped edge portion of the paper cup. A paper cup characterized in that a plurality of locking projections projecting radially inward are provided radially at a predetermined pitch in the circumferential direction, and each of the portions is formed integrally with a sheet of paper. A paper lid is disclosed.

[0011] The paper lid described in Patent Document 3 is formed by molding paper into a complicated shape, requires a special paper lid manufacturing apparatus, and the cost of manufacturing the paper lid Is extremely high.

[0012] As described above, it has been proposed to use a paper lid as disclosed in Patent Documents 1 to 3, but none of them is easy to manufacture, and the manufacturing accuracy is particularly high. No. 2 did not sufficiently function as a lid with good manufacturing accuracy, and the patent document 3 was very troublesome and expensive to manufacture even though the accuracy was high.

[0013] In view of the problems associated with the conventional techniques as described above, the present invention provides a paper lid for a paper container that solves environmental problems and is easy to manufacture and can be manufactured at a very low cost. The purpose is to provide.

Patent Document 1: Utility Model Registration No. 3101102

Patent Document 2: Japanese Patent Laid-Open No. 2002-211617

Patent Document 3: Utility Model Registration No. 3080882

Means for solving the problem

[0014] In the present invention, there is provided a lid for covering a paper container having a curled portion formed by being wound outwardly on an upper edge portion of a conical main body portion that is expanded upward. The main body is made of paper, and is inserted outwardly into the wall surface portion having a conical outer surface that engages with the inner surface of the conical body portion of the paper container and the upper edge portion of the wall surface portion. The lid curl portion is formed, and the canopy portion provided inside the wall surface portion. The wall surface portion is a conical shape formed from a fan-shaped blank, and the canopy portion is formed from a circular blank. The above-described problems are solved by a paper lid for a paper container, which is fixed so as to be positioned higher than the lower edge portion of the side wall portion.

[0015] In the present invention, the bottom portion of a paper cup that has never been conceived in the past is used as a paper lid. It is what you want to use.

[0016] According to the present invention, a part of a paper cup that has been conventionally used is used as it is, and the force is also engaged with the tapered portion formed in the main body when the paper cup is formed. By forming the paper lid so as to have such a taper portion, the paper lid can be easily manufactured in a process very similar to the conventional paper cup manufacturing process, and both tapers are tapered. By using this part, a paper lid is provided that fits very well and does not leak. In this case, it is preferable that the diameter of the curled portion of the paper lid is set to be approximately the same as the diameter of the curled portion of the paper cup.

[0017] Also, in the present invention, a lid for covering a paper container having a curled portion formed by being outwardly inserted into an upper edge portion of a conical main body portion that is expanded upward, The lid is mainly made of paper, and is inserted outwardly into a wall surface portion having a conical outer surface that engages with an inner surface of the conical main body portion of the paper container, and an upper edge portion of the wall surface portion. A lid curl portion formed on the wall surface portion and a canopy portion provided inside the wall surface portion, and the wall surface portion is subjected to a stapling process for tightly engaging the wall surface portion with the main body portion of the paper container. The canopy portion is fixed so as to be positioned higher than the lower edge portion, and may be a paper lid for a paper container.

[0018] This stopper treatment may be performed by laminating, coating, or printing a resin product having a high frictional resistance, such as polyurethane, on the wall surface as a non-slip process! You may form embosses in a line along the circumference of the part! / ヽ. In this case, embossing may be performed only on the paper lid, or both the paper lid and the wall surface of the container body may be embossed.

Furthermore, in the present invention, there is provided a lid for covering a paper container having a curled portion formed by being wound outwardly on an upper edge portion of a conical main body portion that is expanded upward. The lid is mainly made of paper and is formed by being inserted outwardly into a wall surface portion having a conical outer surface that engages with the inner surface of the conical body portion of the paper container, and an upper edge portion of the wall surface portion. A lid curl portion and a canopy portion provided inside the wall surface portion, the canopy portion being fixed so as to be positioned above the lower edge portion, and a central portion of the canopy portion facing upward As a paper lid for a paper container, the container can be stored by covering the lid. You may prevent that a delivery space decreases. By doing so, even when the paper lid is put on, the internal volume of the container is not reduced, and a sufficient amount of liquid can be stored.

[0020] In addition, the canopy portion of the present invention is formed on the lower side, that is, on the surface of the container that faces the contents of the container when it is put on the container. It is preferable that it is applied. The resin film is formed by, for example, laminating a polyethylene film, coating or printing. By doing so, the lid can be prevented from being damaged even if the liquid hits the lower side of the canopy.

[0021] In addition, when the contents of the container are liquid, when the cover is put on the container, the cover and the container are closely fitted to each other, so that the space above the container is compressed and liquid leakage may occur. As a countermeasure, in the paper lid of the present invention, such a disadvantage can be prevented by forming a small hole for venting air in the canopy portion.

Furthermore, in the paper container of the present invention, a hole for inserting a straw may be formed in the canopy portion of the lid member, or a cut line for forming a hole may be provided. The invention's effect

[0023] The present invention intends to use the bottom portion of a paper cup, which has never been conceived in the past, as a paper lid.

[0024] According to the present invention, the main body of the lid can be made of paper like the paper container, and can be discarded without being separated from the paper container at the time of disposal, so that environmental problems do not occur.

[0025] According to the present invention, a paper lid can be manufactured by the same process as that for manufacturing a conventional paper container. Therefore, a new special facility is not required for manufacturing the paper lid, and the paper lid can be manufactured as it is with a slight modification of the conventional paper container manufacturing apparatus, and the manufacturing cost can be extremely low.

[0026] Further, according to the present invention, the taper is similar to the taper of the main body of the paper container. It is possible to make a paper lid with an inclined wall, and the angle of both tapered parts is the same angle, so it is easy to fit. Can be covered.

[0027] Further, in the paper container of the present invention, the paper lid of Patent Document 1 or 2 described above covers the outside of the lid, whereas the paper lid of the present invention covers the inside of the lid. Paper lid to become When the paper container is put on the paper container, the paper container and the paper lid are integrated into a so-called monocoque structure, which is extremely strong, and the container is moved by hand. However, the container can be moved with peace of mind without the container being deformed.

[0028] Further, in the present invention, since the lid is made of paper, it is possible to print advertisements or the like on the canopy portion that is easy to print.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a diagram schematically showing a process for manufacturing a paper lid according to the present invention.

In FIG. 1, the base plate 13 having a disc shape is punched out by pushing the pressing die 11 into the die 12 while feeding the base paper 10 for the canopy part between the pressing dies. Next, the inner die 14 in the press die is protruded and narrowed to the die 12 side, and the canopy portion 1 in which the edge 15a is recessed 1

Form 5. When the canopy portion 15 is formed by drawing, the canopy portion 15 is vacuum-sucked to the bottom of the container-like conical mold 20 (see FIG. 1 (a)).

[0031] As the canopy base paper 10, a base paper that has been conventionally used in paper containers can be used. As an example, the base paper can be about 150 to 300 G / m ^{2 in} virgin pulp specifications.

[0032] On the other hand, while feeding the base paper 30 of the portion that becomes the wall surface portion 33 of the paper lid, it is punched into a fan-shaped blank 31 and the punched fan-shaped blank 31 is placed around the conical mold 20 described above. Both ends in the winding circumferential direction are heated and bonded to each other 33a to form a conical wall portion 33 having a predetermined taper angle (see FIG. 1 (b)).

[0033] Similar to the canopy base paper 10, the base paper for the wall part 30 can be a base paper conventionally used for paper containers. For example, it is about 150 to 300 GZm ^{2 in the} virgin pulp specification. be able to.

[0034] Then, the lower end 33b of the wall surface portion 33 (the connected fan-shaped blank 31) is heated and then folded inward so as to wrap the squeezed edge portion 15a of the canopy portion 15 and bond them together (see FIG. 1 (c)). As another mode, the lower end 33b of the wall surface portion 33 may not be folded inward, and the outside of the narrowed edge portion 15a of the canopy portion 15 may be brought into contact with the inner side of the lower end 33b to bond them together (see FIG. 6). [0035] The upper edge portion of the wall surface portion 33 opposite to the canopy portion 15 is wound outward while the tool 41 is rotated, and is further pushed by the die 42 to round the upper end to form a lid curl portion 33c (FIG. 1 (d) reference)

In this way, the paper lid 16 according to the present invention having the canopy 15 at one end is manufactured (see FIG. 2). In the present invention, since the lid is made of paper, an advertisement can be printed on the canopy portion 15 which is easy to print.

[0037] When the paper lid 16 manufactured in this way has a certain height, a plurality of the lid curl portions 33c come into contact with each other as in the conventional paper container. Can be stored and transported in layers. When the height of the paper lid 16 is low or when the position of the canopy portion of the paper lid 16 is increased, it may be difficult to stack a plurality of paper lids 16. In such a case, a plurality of paper lids 16 are stored in, for example, a cylindrical storage container and stored or transported.

As apparent from the manufacturing method described above, in the present invention, the canopy portion 15 provided inside the wall surface portion 33 is fixed so as to be positioned higher than the lower edge portion of the wall surface portion 33. This manufacturing process is very similar to that of conventional paper cups.

[0039] It should be noted that, in the manufacture of the paper container according to the present invention, it is possible to use a raw paperboard obtained by laminating polyethylene or the like at both ends in the circumferential direction of the fan-shaped blank 31 forming the wall surface portion 15. This is preferable for good adhesion of the wall and the wall 33 and the canopy 15. The laminating process can be the same as that used in conventional paper containers. For example, polyethylene of 18 to 20 microns is laminated.

[0040] In particular, in the present invention, it is preferable to laminate the surface of the paperboard used as the canopy portion 15. In that case, in the normal cup, the inner surface of the bottom portion is the laminate portion. However, in the present invention, on the contrary, the partial force S which is the outer portion of the canopy portion is configured to be the laminate portion. Favored ,.

[0041] The paper lid manufacturing process of the present invention includes a conventional conical main body 51 that expands upward, and a force rule formed by being inserted outwardly into the upper edge of the main body 51. This is very similar to the manufacturing process of the paper container 50 including the part 52 and the bottom 53 provided inside the main body part 51. Therefore, the paper lid 16 of the present invention can be manufactured using a conventional paper container manufacturing apparatus. The main difference is that in the conventional paper container, the main body 51 has a considerable depth, whereas in the paper lid of the present invention, such a depth is made as small as possible. (Up to 2cm as an example) For this reason, the mold 20 for the paper lid of the present invention should be prepared separately from the mold for the paper container.

[0042] However, in both cases, the conical taper force is selected so that the taper has substantially the same value, and as shown in FIG. When the paper lid 16 according to the invention is covered, it can be covered simply by applying an upper force. It is preferable that the taper angles of the two are substantially equal so that they can be engaged with each other so that they sufficiently function as a lid.

More specifically, the paper lid 16 of the present invention can be attached to the paper container 50 simply by inserting from the top to the bottom. That is, both the paper container 50 and the paper lid 16 have a top curl portion having substantially the same diameter, and the taper angle is made substantially the same.

[0044] On the other hand, there is a difference between the outer diameter and the inner diameter because the paper constituting each has a thickness. For this reason, when the paper lid 16 is inserted into the paper container 50, the outer diameter of the paper lid 16 becomes larger than the inner diameter in the vertical direction of the paper container 50 main body, and the paper container 50 main body Stress is exerted on the side surface of the paper lid 16 toward the inner side of the cup and toward the side of the paper container 50 on the side surface of the paper lid 16. The outer side surfaces of the side wall surfaces are pressed against each other to increase adhesion, increase frictional resistance, and prevent the attached lid from coming off. The adhesiveness can be appropriately adjusted by changing the thickness of the paper container 50 and the paper lid 16 used at this time. Therefore, at the beginning of insertion, the difference in diameter between the top of the paper container 50 main body and the bottom of the paper lid 16 is large, so the curled portion of the paper lid 16 that is easy to insert easily The mounting operation ends when the main body part is inserted until it completely overlaps the curl part.

[0045] In the present invention, there is a curl portion at the top of the paper lid 16 and the paper container 50, which serves as a stopper when the paper lid 16 is mounted, and can be easily removed when removed. By overlapping the top curl 52 of the paper container 50 and the lid curl 33c of the paper lid 16, the strength when held by hand can be increased. The top curl part is mechanically formed, so there is a limit to the paper thickness. Especially for the large-capacity paper cup 50, there is a case where the top curl part 52 alone is insufficient in strength. The lid curl part 33c and the top curl part 52 Double Such a problem can be solved.

[0046] As the length of the insertion portion of the paper lid 16 of the present invention, that is, the height is longer, the contact area between the inner surface of the paper container 50 and the outer surface of the paper lid 16 increases. It is preferable to select the length that seems to be most appropriate in relation to adhesion. Further, it is preferable that the resistance when inserting is set to an appropriate size so that a fluid such as water filled in the paper container 50 does not overflow even when the container is tilted.

Furthermore, in order to make it difficult for the paper lid 16 and the paper container 50 to slip, a stopper process may be applied to the outer surface of the side wall surface 33 of the paper lid 16. As the stopper treatment, a non-slip treatment treatment may be performed by laminating a polyurethane sheet or printing an anti-slip agent such as a resin or a chemical having a high frictional resistance. In this case, the inside of the paper container 50 is usually laminated with polyethylene, and the polyurethane lid is laminated on the outer surface of the side wall surface of the paper lid 16 so that both of them are laminated. Frictional resistance increases and is difficult to come off. In this case, the frictional resistance increases, but the magnitude of the frictional resistance can be changed as appropriate by adjusting the height of the paper lid 16.

[0048] In addition to the above-mentioned polyurethane, non-slip finishing agents include ethylene copolymers such as EVA, EMA, EMMA, and EMAA, styrene elastomers such as hot melt, ionomer, SEPS, and SEBS, nylon, and polyester. Elastomers etc. may be extruded and laminated.

[0049] Further, in addition to the laminating force, the anti-slip process described above, as shown in Fig. 3, is a belt-like pattern that protrudes outward along the circumference on the outer side of the side wall surface 33 of the paper lid 16. If the protrusions are located in a discontinuous manner in the circumferential direction and protrude outward, the dot-like protrusions may be embossed. In this case, it is preferable that the inner side of the main body portion of the paper container 50 is also made to be more difficult to slip when the two are overlapped by embossing 33d projecting inward along the circumference. In addition, the outer side wall surface 33 of the paper lid 16 may be projected in a band shape along the circumference, and the inner side of the main body of the paper container 50 may also be projected outward in the belt shape. The protruding direction of the emboss can be reversed from that described above.

[0050] By preventing slippage between the paper lid 16 and the paper container 50 described above, the paper lid 16 can be covered on the paper container 50 without leakage. [0051] Further, a small hole for venting air is formed in the canopy portion 15 of the paper lid 16 of the present embodiment. As a result, when the paper lid 16 is put on the paper container 50, even if the lid and the container are tightly fitted and the space at the top of the container is compressed, a small pore force for venting air will escape and liquid leakage will occur. Is prevented.

[0052] Further, in the present invention, in order to prevent the storage space of the paper container 50 from being reduced by covering the lid, the central portion of the canopy portion 15 of the paper lid 16 is moved upward by a press carriage or the like. It may be projected (see Fig. 4). By rubbing in this way, even if the paper lid 16 is covered, the internal volume of the container does not decrease, and a sufficient amount of liquid can be stored. In this case, the protruding portion 15b of the canopy portion 15 may be appropriately protruded from the upper edge of the wall surface portion 33.

[0053] Further, in the paper lid 16 of the present invention, as shown in Fig. 5, a hole or a drinking hole for inserting a straw into the canopy portion 15 of the paper lid 16, as in the conventional plastic lid. Holes serving as mouths may be formed, or cut lines 15c for forming these holes may be provided. When the canopy 15 is laminated, by leaving the cut line 15c only in the paper portion while leaving the laminate part, it is possible to maintain the sealing property of the cut line 15c and prevent liquid leakage. When the cut line 15c is formed, it is preferable that the above-described small holes for venting air are formed in a region surrounded by the cut line 15c.

FIG. 7 shows a cross-sectional view of another embodiment of the present invention. The lid shown in FIG. 7 is mainly made of paper, and has a wall surface portion 33 having a conical outer surface that engages with the inner surface of the conical main body portion of the paper container 50, and outwardly on the upper edge of the wall surface portion 33. The lid curl portion 33c is formed by being inserted, and the canopy portion 15 is attached to the lid curl portion 33c whose peripheral edge is formed at the upper edge portion of the wall surface portion 33. The method of forming the wall surface portion 33 and the lid curl portion 33c is the same as in the above-described embodiment. The canopy portion 15 is preferably made of paper, and a resin film 33f is formed on the lower side of the paper by lamination, coating, printing, or the like, or a water repellent is applied, and the lid curl portion (top curl) A resin coating is preferably thermally bonded to 33c. Prior to thermal bonding of the canopy 15, it is preferable that the top of the lid curl portion (top curl) 33 c be pressed flat against a flat plate. Since the lid body is made of paper, it is possible to print advertisements etc. on the canopy that is easy to print on the upper side of the lid.

[0055] In some cases, the canopy portion 15 of this embodiment is formed as a transparent resin sheet, and a paper container is used. The contents of the vessel may be visible. In this case, it is preferable to use a cellophane sheet or a biodegradable film or sheet for the canopy 15 in order to eliminate the problem of separation and disposal after use.

Brief Description of Drawings

FIG. 1 is a diagram schematically showing a process for manufacturing a paper lid according to the present invention, in which (a) is a perspective view of a process for manufacturing a canopy part, and (b) is a process for manufacturing a wall surface part. (C) is a cross-sectional view of the step of attaching the canopy portion to the wall surface portion, and (d) is a perspective view of the step of manufacturing the curl portion on the top of the wall surface portion.

FIG. 2 is a cross-sectional view showing a state in which a paper lid according to the present invention is put on a paper container.

FIG. 3 is a perspective view of an embossed paper lid according to the present invention.

FIG. 4 is a cross-sectional view of a paper lid in which the central portion of the canopy portion of the paper lid according to the present invention protrudes from the upper edge of the wall surface portion.

FIG. 5 is a perspective view of a paper lid formed with a straw insertion hole according to the present invention as seen from the canopy side.

FIG. 6 is a cross-sectional view of another embodiment of the paper lid according to the present invention.

FIG. 7 is a cross-sectional view of another embodiment of the present invention.

Explanation of symbols

[0057] 15

Canopy

16

Paper lid

33

Wall part

33c

Lid curl

50

Paper container

51 Conical body

52 Carnore

Claims

The scope of the claims

[1] A lid for covering a paper container having a curl portion formed by being swung outwardly into an upper edge portion of a conical main body portion that is expanded upward, A wall surface portion made of paper and having a conical outer surface engaged with an inner surface of the conical body portion of the paper container, and a lid curl formed by being squeezed outwardly into an upper edge portion of the wall surface portion And a canopy portion provided inside the wall surface portion, wherein the wall surface portion is a conical shape formed from a fan-shaped blank, and the canopy portion is formed with a circular blank force and has a lower edge of the side wall portion. A paper lid for a paper container, characterized in that it is fixed so as to be placed higher than the section.

[2] The paper lid for the paper container according to [1], wherein a peripheral edge of a circular blank is folded and attached to the side wall portion.

[3] A lid for covering a paper container having a curl portion formed by being swung outwardly into an upper edge portion of a conical main body portion that is expanded upward, A wall surface portion made of paper and having a conical outer surface engaged with an inner surface of the conical body portion of the paper container, and a lid curl formed by being squeezed outwardly into an upper edge portion of the wall surface portion And a canopy portion provided inside the wall surface portion, and the wall surface portion is subjected to a stapling process for tightly engaging the wall surface portion with the main body portion of the paper container. A paper lid for a paper container, wherein the paper lid is fixed so as to be positioned above the lower edge.

[4] The paper lid for the paper container according to claim 3, wherein the wall surface portion is subjected to anti-slip processing as the stapling treatment.

[5] The paper lid for the paper container according to claim 3, wherein the wall surface is embossed as the stopper treatment.

[6] A lid for covering a paper container having a curl portion formed by being swung outwardly into an upper edge portion of a conical main body portion that is expanded upward, A wall surface portion made of paper and having a conical outer surface engaged with an inner surface of the conical body portion of the paper container, and a lid curl formed by being squeezed outwardly into an upper edge portion of the wall surface portion And a canopy portion provided inside the wall surface portion, the canopy portion is fixed so as to be positioned higher than the lower edge portion, and the central portion of the canopy portion protrudes upward. A paper lid for a paper container.

[7] The canopy portion is made of a circular blank with its peripheral edge folded, and is bent and attached to the folded peripheral edge of the canopy portion by bending the lower edge portion of the wall surface portion. A paper lid for a paper container according to any one of claims 1 and 3-6.

[8] A lid for covering a paper container having a curl portion that is formed by being swung outwardly into an upper edge portion of a conical main body portion that is expanded upward, A wall surface portion made of paper and having a conical outer surface engaged with an inner surface of the conical body portion of the paper container, and a lid curl formed by being squeezed outwardly into an upper edge portion of the wall surface portion A paper lid for a paper container, characterized in that it comprises a portion and a canopy portion attached to a lid curl portion whose peripheral edge is formed on an upper edge portion of the wall surface portion.

[9] The paper container according to any one of [1] to [8], wherein the canopy portion has a resin film formed on paper or a water repellent applied thereto. Paper lid.

10. The paper lid for a paper container according to any one of claims 1 to 9, wherein a small hole for venting air is formed in the canopy portion.

11. The paper lid for a paper container according to any one of claims 1 to 10, wherein the canopy portion has a hole for inserting a straw or a notch for forming the hole.