Paper plate having discharge hole opening / closing means, and paper cap manufactured from paper plate

Abstract

The present invention relates to a paper cap and, specifically, to a paper cap manufacturing method which enables a discharge hole provided in a paper cap to be opened / closed and provides a means for opening and closing same, and by which a paper sheet is divided to be folded into three parts by means of folding lines, and, in this state, cutting lines and the folding lines are used to remove removal regions and form adhesive regions, and then adhere an intermediate layer to a bottom layer and adhere a top layer to the back side of the intermediate layer, and same is cut into a circular plate thereafter.

Description

A paper plate equipped with a discharge port opening / closing means and a paper cap manufactured from the paper plate.

[0001] The present invention relates to a paper plate provided with a paper cap and a discharge opening / closing means applicable to the paper cap, and a manufacturing method for mass-producing the paper plate.

[0002] Currently, most chocolates, candies, gums, etc., which are in the form of beverages, particles (including powder) or blocks (a general term for lumps of a certain size), are contained in plastic containers and sealed with plastic caps. For consumption, the cap is detached from the container, or a means for opening and closing the outlet on the container is provided, and the contents filled in the container are consumed through the outlet by opening and closing the opening and closing means.

[0003] However, although these plastic molded products are convenient to manufacture and use, their use is restricted for environmental protection reasons, and there are many restrictions when using them.

[0004] Therefore, to solve this problem, paper is used as a substitute for plastic, and products made from this paper are manufactured through pulp molding or paper sheet processing.

[0005] However, pulp molding technology cannot be applied to beverages or food for human consumption, so most of the time, paper sheets are processed and molded into a specific shape.

[0006] However, when manufacturing paper caps using these paper sheets, only the shape of the cap was possible, making it practically impossible to use them for various purposes.

[0007] Accordingly, the present invention is intended to solve such problems, and is intended to provide a discharge port using a paper sheet having a certain thickness and to enable the discharge port to be opened and closed. The invention is intended to simplify the manufacturing process for enabling the discharge port to be opened and closed using only such a paper sheet and to enable mass production, and to provide a paper cap using a paper plate provided with a means for opening and closing the discharge port.

[0008] To this end, rectangular paper sheets having a constant thickness are provided in a triple-overlapping structure, and each paper sheet is provided with different cutting lines and folding lines, and a removal area by the cutting lines and an adhesive area for overlapping are provided so that they overlap, and then the triple-overlapping paper plate is cut into a desired shape to provide a paper plate equipped with a discharge port opening / closing means.

[0009] In addition, the paper plate equipped with the outlet opening / closing means is designed to be combined by curling or adhesive when applied to the cap body.

[0010] In addition, a paper plate equipped with a discharge port opening / closing means is formed by overlapping paper sheets in three layers: a bottom layer, a middle layer, and an upper layer, and an eccentric discharge hole is provided in the bottom layer, and a central portion of the middle layer is cut to accommodate the discharge hole and has a cut surface, and a space surface is provided that allows the cut surface to slide back and forth to open and close the discharge hole, and in this state, when the upper layer is adhered to the upper side of the middle layer, the upper layer blocks the left and right sides of the cut surface so that the cut surface of the middle layer slides.

[0011] Additionally, there may be various embodiments to enable the cutting surface to slide in conjunction with the upper layer.

[0012] In addition, in order to mass-produce paper plates equipped with opening and closing means for discharge ports and to obtain uniformity of the product, in one embodiment of the manufacturing method, a single paper sheet is cut in multiple stages up and down by a cutting line, folded left and right by a folding line, and when overlapping in three layers, the paper plate is divided into an upper layer, a bottom layer, and a middle layer from the left, and an adhesive area is provided on the left and right sides of the upper layer and the bottom layer, and in a state of overlapping in three layers, the paper plate equipped with an opening and closing means for discharge ports can be manufactured by the cutting and folding lines provided in each of the upper layer, the bottom layer, and the middle layer.

[0013] Another manufacturing method is to manufacture a paper plate having a discharge opening opening means by forming three paper sheets with the same cutting and folding lines, overlapping the middle layer and the upper layer continuously with the bottom layer as the upper layer, and forming adhesive areas on the left and right sides of the bottom layer and the middle layer, and then bonding them to manufacture a triple paper sheet, and then cutting them into a circular shape.

[0014] Accordingly, by attaching, cutting, and folding three layers of paper sheets, a sliding part can be formed and moved back and forth, so that the discharge port can be opened and closed, and accurate opening and closing can be achieved even during repeated operations.

[0015] Additionally, since it is made of paper sheets, it can be easily recycled, which can also help resolve carbon emissions.

[0016] Figures 1a to 1i are a first embodiment of a paper plate equipped with a discharge opening / closing means of the present invention.

[0017] Figures 2a to 2i are a second embodiment of a paper plate equipped with a discharge opening / closing means of the present invention.

[0018] Figures 3a to 3i are a third embodiment of a paper plate equipped with a discharge opening / closing means of the present invention.

[0019] Figures 4a and 4b are examples illustrating each step of a manufacturing process according to an embodiment of the present invention.

[0020] Figures 5a to 5c illustrate a manufacturing process of another embodiment of the present invention.

[0021] The best form for carrying out the present invention is to have a cap body made of a paper sheet and capable of covering a container, an opening having a border band formed by cutting a portion of the upper surface of the cap body, and a paper plate having a discharge opening / closing means made of a paper sheet positioned on the border band of the opening, and then fixed by curling.

[0022] First, the terms used in the specification and claims of the present invention should not be interpreted as limited to their dictionary meanings, and should be interpreted as meanings and concepts that conform to the technical idea of ​​the present invention, based on the principle that the inventor can appropriately define the concept of the term to explain his or her invention in the best way.

[0023] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only preferred embodiments of the present invention and do not express all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist that can replace them at the time of filing.

[0024] The present invention is described in detail below based on the attached drawings.

[0025] The present invention consists of the first to third embodiments, and relates to a method for manufacturing a paper plate provided with an opening and closing means for a discharge port, and a paper cap to which a paper plate provided with an opening and closing means for a discharge port is applied.

[0026] However, each of these embodiments is intended to illustrate the present invention, and other embodiments may be disclosed using the technical idea of ​​the present invention.

[0027] In the first to third embodiments of the present invention described above, a cap body (10) capable of covering a container having a shape or size made of various materials as shown in FIGS. 1h or 1i, 2h or 2i, and 3h or 3i is provided with a border band (11) of a certain width on the inner side of the upper edge of the cap body (10) so that a paper plate (100) equipped with a discharge opening opening means can be combined, and an opening (12) is provided in the center thereof, and the opening (12) is covered by the plate (100) equipped with a discharge opening opening means, and the paper plate (100) equipped with a discharge opening opening opening means placed on the border band (11) is rolled and curled by the upper edge (13) of the cap body, or is combined with the cap body (10) by an adhesive layer (14) in a state where it is seated on the upper surface of the border band, thereby providing a paper cap (20). It is.

[0028] At this time, if the contents to be packaged in the container (30) require to be kept confidential for a long period of time, a detachable syringe (40) is attached to the top of the container (30) so that the contents are filled in the inner space of the container and air is prevented from penetrating into the packaged contents, thereby enabling long-term storage.

[0029] In the present invention, a first embodiment of a paper plate (100) provided with the discharge port opening / closing means applied to the paper cap (20) is provided, as shown in FIGS. 1a to 1g, which is made of a triple-layered paper sheet consisting of a bottom layer (110), an intermediate layer (120), and an upper layer (130) in an overlapping state, and a cutting line (2) for removing a portion corresponding to a removal area (1), a folding line (3) that can be folded in a triple-layered manner, and a folding line (4) for opening / closing operation are formed, and the portion corresponding to the removal area (1) is separated from the paper sheets constituting each layer by the cutting line (2) and removed, and a connecting point (124) is provided in the intermediate layer (120) at one part of the cutting line (2) so that the paper sheet and the cutting surface (121) are connected, so as to provide a paper plate (100) provided with the discharge port opening / closing means as shown in FIG. 1b. Each of the left and right sides of the bottom layer (110) and the upper layer (130) has a constant width of adhesive areas (112, 132), and the middle layer (120) is adhered to the upper side of the bottom layer (110), and the upper layer (130) is adhered to the upper side of the middle layer (120), forming a triple-overlapping structure.

[0030] At this time, it can be arranged to be folded and triple-overlapped by a folding line (3) on one sheet of paper, and in this case, the removal area (1) is provided in a state where the cutting line (2) is provided in a different shape, and the removal area (1) is overlapped by the folding line (3) by the adhesive area (112, 132) in a state where the removal area (1) is removed, and in another method, as shown in FIG. 5, when three paper sheets are used to continuously overlap the bottom layer (110), the middle layer (120), and the upper layer (130) from the bottom, the bottom layer (110), the middle layer (120), and the upper layer (130) made of each paper sheet are formed with cutting lines (2) and folding lines (3) of different shapes, and the removal area (1) by the cutting line (2) of the same shape is removed in each layer, and in this state, the bottom layer (110) and the middle layer (120) are provided with adhesive areas, and then they are bonded. By cutting into a desired shape, it is possible to mass-produce a paper plate (100) equipped with a discharge opening / closing means at one time.

[0031] These can be manufactured manually, or produced by gluing and cutting paper sheets continuously on an automated line.

[0032] In this state, in the part forming the bottom layer (110), a discharge port (111) is provided by removing an eccentrically removed area (1) at one end by a cutting line (2).

[0033] The intermediate layer (120) positioned above the bottom layer (110) having the above discharge port (111) is bonded to the adhesive areas (112) provided on the left and right sides of the bottom layer (110), and has a central portion having a predetermined space surface (122) in which a portion is removed by a removal area (1) separated by a cut line (2) at the top and bottom so that the discharge port (111) provided in the bottom layer (110) can be opened and closed, so that the cut surface (121) slides on the space surface (122) so that the discharge port (111) provided in the bottom layer (110) can be opened and closed, and an upright surface (123) is provided on one side of the cut surface (121) so as to be foldable by a folding line (4).

[0034] In this state, the upper layer (130) is bonded to the upper side of the intermediate layer (120) by the bonding area (132) provided on the left and right sides.

[0035] As described above, the upper layer (130) positioned by being bonded to the upper side of the intermediate layer (120) by the bonding area (132) is provided with a communication port (131) that can communicate with the discharge port (111), and an opening (133) is provided with a margin (a) to partially cover the left and right sides (121a) of the cut surface (121) connected by the connection point (124) of the intermediate layer (120) on the upper side of the communication port (131).

[0036] At this time, the opening width of the above-mentioned opening (133) is opened to such an extent that only the upright surface (123) of the intermediate layer (120) can be exposed, so that the left and right sides (121a) of the cut surface (121) are caught in the above-mentioned free width (a), and only the upright surface (123) is exposed to the opening (133), and when the upright surface (123) is folded by the folding line (4) and can be upright, the cut surface (121) slides on the space surface (122), so that the discharge port (111) and the communication port (131) can be opened and closed simultaneously.

[0037] In this state, if the paper plate (100) is cut into a circle as shown in FIG. 1c and FIG. 1d, a paper plate (100) equipped with a discharge opening / closing means is completed.

[0038] In this state, if the upright surface (123) exposed to the opening (133) of the upper layer (130) is held by hand and the cut surface (121) is slid, the connection point (124) is torn by an external force, and the space surface (122) of the intermediate layer is positioned between the bottom layer and the upper layer, so that the cut surface (121) can slide stably.

[0039] Accordingly, the cutting surface (121) can be stably slid between the bottom layer (110) and the upper layer (130) to open and close the discharge port (111) provided in the bottom layer (110), thereby allowing the contents filled in the container to be discharged through the communication port 131) of the upper layer.

[0040] At this time, when a paper plate (100) is provided by cutting a paper sheet that is overlapped three times into a circular shape and having a discharge port opening / closing means, the connection point (124) can be made to burst by an external force if possible, thereby providing the function of a warranty room (a function that enables confirmation of whether the product is in an open state).

[0041] In the present invention, a second embodiment of a paper plate (100) provided with a discharge opening / closing means is as shown in FIGS. 2a to 2g, in which adhesive areas (112, 132) are provided on the left and right sides of the bottom layer (110) and the upper layer (130) of the first embodiment, an outlet (111) is provided at the lower end of the central portion of the bottom layer (110), an intermediate layer (120) is adhered to the adhesive areas (112) on the left and right sides of the bottom layer (110), an upper side of the intermediate layer (120) is adhered to the adhesive areas (132) of the upper layer (130), a cut surface (121) of the intermediate layer (120) is connected to a paper sheet forming the intermediate layer (120) by a connecting point (124), and a removal area (1) exists at the upper and lower ends of the intermediate layer (120) by being cut by a cutting line (2). The configuration is the same in that the space surface (122) is provided and the upright surface (123) is exposed to the upper opening (133) by the folding line (4) on the cut surface (121).

[0042] The cut surface (121) formed by the cut line in the central portion forming the intermediate layer (120) is provided with an insertion line (123a) so that it is inserted into the upper inner side of the upright surface (123) that can be uprighted by the folding line (4) at the upper end of the cut surface (121), so that it is easy to put a finger on the upright surface (123) when it is uprighted.

[0043] In addition, the upper layer (130) bonded by the bonding area (132) on the upper side of the intermediate layer (120) is provided with another bonding area (134a) at the lower end of the folding surface (134) provided by the cut line (2) in the central portion, and is bonded to the lower end (121c) of the cut surface (121) on the back side of the intermediate layer (120), and the first folding line (134b) is provided directly above the other bonding area (134a) of the upper layer (130), so that when the upright surface (123) of the intermediate layer is pulled, the cut surface (121) of the intermediate layer (120) bonded to the other bonding area (134a) of the upper layer (130) slides, and the folding surface (134) bonded to the back side of the lower end of the cut surface (121) is folded by the first and second folding lines (134b, 134c). When opening and closing the outlet (111), it can be opened and closed while inducing accurate forward and backward movement.

[0044] At this time, the first and second folding lines (134b, 134c) of the second embodiment are provided with a folding line on the outer side of the folding surface (134) and a cutting line in the center thereof, so that the folding surface (134) can be easily folded, and the force to return by the cutting line in the folded state is small, so that the outlet can be prevented from being closed arbitrarily in the open state.

[0045] In addition, a bridge (135) is provided between the folding surface (134) of the upper layer (130) and the opening (133), so that even when the upright surface (123) provided on the upper end of the cut surface (121) of the middle layer (120) is pulled by a handle function, it can slide accurately horizontally while blocking lifting directly upward, so that the airtightness of the discharge port (111) that is opened and closed can also be maintained excellently.

[0046] At this time, the connection point (124) provided on the cut surface (121) of the middle layer (120) can be naturally torn when the upright surface (123) is pulled, thereby enabling the contents to be purchased and the state of opening to be confirmed, and thus the function of a warranty room can also be provided.

[0047] In the third embodiment of the present invention, as shown in FIGS. 3a to 3g, the bottom layer (110) and the upper layer (130) of the first and second embodiments are provided with adhesive areas (112, 131) on the left and right sides, the outlet (111) is provided at the lower end of the central portion of the bottom layer (110), the middle layer (120) is bonded to the adhesive areas (112) provided on the left and right sides of the bottom layer (110) and is bonded to the back surface of the middle layer (120) by the adhesive areas (132) provided on the left and right sides of the upper layer (130), and another adhesive area (134a) of the upper layer (130) is provided at the lower end of the folded surface (134) and is bonded to the lower end of the cut surface (121) of the middle layer (120), and the upper and lower ends of the cut surface (121) of the middle layer (120) are provided with a cut line (2). The point that the space surface (122) is provided when the removal area (1) is removed and the connection point (124) of the intermediate layer (120) is connected to the cut surface (121) and the paper sheet constituting the intermediate layer (120) are the same.

[0048] The upper layer (130) has an upright surface (134d) for a handle function in the central portion of the folded surface (134) of the upper layer (130) attached to the lower portion of the cut surface (121) provided in the middle layer (120) by another adhesive area (134a) of the upper layer, and the folded surface (134) is folded on the outside of the upright surface (134d) by the first and second fold lines (134b, 134c), so that the cut surface (121) of the middle layer (120) slides in close contact with the upper surface of the bottom layer (110) to open and close the discharge port (111).

[0049] Even at this time, the left and right sides (121a) of the cut surface (121) of the middle layer (120) are positioned at the lower end of the allowable width (a) of the upper layer, so that they do not come off when sliding on the upper surface of the bottom surface (110).

[0050] In the first to third embodiments, when the cut surface (121) of the intermediate layer (120) is formed by the cut line (2), the cut line (2) is formed to slide smoothly while being in close contact with the upper surface of the bottom surface (110), so that the cut surface (121) is inclined upward at a constant angle from the bottom to the top to form an inclined space area (b), thereby minimizing interference when the cut surface (121) slides on the space surface (122) and providing ease of sliding.

[0051] In the present invention, the upward slope is formed at an angle of about 1 degree to form an inclined space area (b), so that when sliding, the flow is minimized and easy sliding is possible.

[0052] However, if it is formed larger than this, the slide stability may be damaged due to interference as the cutting surface moves forward and backward, causing movement to the left and right.

[0053] In addition, since the cut surface (121) of the middle layer is connected by the connection point (124), it is possible to provide ease of overlap when overlapping in a triple structure as described above, and the paper cap using the paper plate (100) equipped with a means for opening and closing the discharge port (111) can also provide the function of a warranty room that allows the user to check for himself or herself whether someone has opened the paper cap.

[0054] In addition, in the present invention, the paper plate (100) equipped with an opening / closing means for the discharge port is manufactured by using three paper sheets, one floating on top of the other, and then cutting them into a circular shape, thereby enabling mass production while obtaining uniformity of the product, and this can be realized by manufacturing according to the content described below.

[0055] As shown in Fig. 4a, the manufacturing process of the present invention is to divide a rectangular sheet of paper (1) into multiple equal parts vertically and horizontally by a horizontal cutting line (2) so that it can be cut, and to divide it left and right into three equal parts by a vertical folding line (3) so that it can be folded from left to right into an upper layer, a bottom layer, and a middle layer, and to provide adhesive areas on the left and right sides of the bottom layer and the upper layer to bond them, thereby providing three layers of paper sheets, and then cutting them into a circular shape by a cutting operation.

[0056] Another manufacturing method of the present invention is to manufacture a paper plate equipped with an opening / closing means for a discharge port by overlapping three paper sheets from top to bottom in an upper layer, an intermediate layer, and a bottom layer, each of which may have different removal areas due to a cutting line and upright surfaces due to a folding line, as shown in FIG. 5, and then forming an adhesive area on the left and right sides of the bottom layer and the intermediate layer, and then forming a triple layer of paper sheets and then cutting them into a circle through a cutting operation.

[0057] The manufacturing method for this is explained in a little more detail as follows.

[0058] Figures 4a to 4h illustrate an embodiment of the manufacturing method of the present invention, and the first step for manufacturing is as described above.

[0059] In the second stage, the three layers of paper obtained in the first stage are divided into three equal parts by horizontal cutting lines, and are formed into three upper layers (130), a bottom layer (110), and a middle layer (120) by folding lines on the left and right, and each layer is provided with a removal area by cutting lines in various shapes, and each layer is divided by folding lines.

[0060] In the third step, the removal area provided by the incision line is removed while the incision line and folding line are provided.

[0061] The fourth step is to provide adhesive areas on the left and right sides of the bottom and upper layers.

[0062] The fifth step is to bond three overlapping paper sheets using the above bonding area.

[0063] The sixth step is to cut it into a circle using a cutting line.

[0064] In the present invention, the paper plate provided with the outlet opening / closing means is depicted as a circle because the container is usually circular, and if it is polygonal, it can be provided as a polygon by the same principle.

[0065] The seventh step is to separate the paper plate into an opening / closing means for a discharge port cut into a circular shape as shown in the present invention.

[0066] Accordingly, not only can the adhesive area, cutting line, and folding line be formed on the paper sheet at the same time, but also the paper sheet can be cut into a circle by cutting in a three-layer overlapped state, thereby ensuring uniformity and mass production is possible.

Claims

1. Made of paper sheets, it has a cap body that can cover the container. An opening is formed by cutting a portion of the upper surface of the cap body, and a border band is formed. A paper cap provided with a discharge opening / closing means, which is made of a paper sheet and is positioned on the edge of the above opening and then fixed by curling.

2. In paragraph 1, A paper cap provided with a discharge opening / closing means, which is made of a paper sheet and is positioned on the edge of the above opening, and then fixed by bonding the paper plate provided with a discharge opening / closing means 3. It consists of a triple-layer structure with a bottom layer, middle layer, and upper layer made of paper sheets. The above bottom layer, middle layer and upper layer are bonded by their respective bonding areas, The above floor is provided with a discharge port at the bottom, The above intermediate layer is provided with a sliding cut surface positioned on the space surface so that the discharge port can be opened and closed, and the above cut surface is provided with an upright surface by a folding line. The upper side of the above intermediate layer is provided with a free surface on the left and right sides of the opening of the upper layer when the upper layer is adhered, so that a part of the left and right sides of the cut surface are covered while the upright surface is exposed. A paper plate having a discharge port opening / closing means provided at the bottom of the opening to provide a communication port communicating with the discharge port.

4. It consists of a triple-layer structure with a bottom layer, middle layer, and upper layer made of paper sheets. The above bottom layer, middle layer and upper layer are bonded by their respective bonding areas, The above floor is provided with a discharge port at the bottom, An upright surface is provided by a folding line on the upper part of the cutting surface provided by the cutting line in the central part forming the middle layer, and The upper layer, which is bonded by the bonding area on the upper side of the intermediate layer, has another bonding area provided at the bottom of the folded surface provided by the cut line in the central portion, and is bonded to the bottom of the cut surface on the back side of the intermediate layer. A paper plate having a first folding line provided at the upper end of another adhesive area of ​​the upper layer, and when the upright surface of the intermediate layer is pulled, the cut surface of the intermediate layer adhered to another adhesive area of ​​the upper layer slides, and when the folded surface adhered to the back surface of the lower end of the cut surface is folded by the first and second folding lines, the discharge port can be opened and closed while inducing accurate forward and backward movement.

5. In paragraph 4, The above first and second folding lines are provided on the outer side of the folding surface as a folding line, and the center thereof is provided with a cutting line, thereby providing a discharge port opening / closing means for facilitating folding of the folding surface.

6. In paragraph 4 or 5, A paper plate provided with a discharge port opening / closing means that can slide exactly horizontally while blocking lifting upwards even when the upright surface (123) provided on the upper end of the cut surface (121) of the middle layer (120) is pulled by a handle function, so that the sealing of the discharge port (111) that is opened / closed can be maintained excellently, since a bridge (135) is provided between the folding surface (134) of the upper layer (130) and the opening portion (133) is provided.

7. It consists of a triple-layer structure with a bottom layer, middle layer, and upper layer made of paper sheets. The above bottom layer, middle layer and upper layer are bonded by their respective bonding areas, The above floor is provided with a discharge port at the bottom, An upright surface is provided by a folding line on the upper part of the cutting surface provided by the cutting line in the central part forming the middle layer, and The upper layer, which is bonded by the bonding area on the upper side of the intermediate layer, has another bonding area provided at the bottom of the folded surface provided by the cut line in the central portion, and is bonded to the bottom of the cut surface on the back side of the intermediate layer. A paper plate in which the folded surface of the upper layer is provided with an upright surface for a handle function in the central portion while being bonded to the lower portion of the cut surface provided in the intermediate layer by another adhesive region of the upper layer, and the folded surface is folded on the outside of the upright surface by the first and second fold lines, and the cut surface of the intermediate layer slides in close contact with the upper surface of the bottom layer to open and close the discharge port, and the discharge port opening and closing means is provided so that the left and right sides of the cut surface of the intermediate layer are positioned at the lower end of the free width of the upper layer and the discharge port does not come off when slid on the upper surface of the bottom surface.

8. In any one of the clauses 3, 4 or 7, In the case where the cut surface of the above intermediate layer is formed by a cut line, the cut line is formed to be inclined upward at a certain angle from the bottom to the top to form an inclined space area (b) so that the cut surface slides smoothly while being in close contact with the upper surface of the floor, and a paper plate equipped with a discharge port opening / closing means to minimize interference and provide ease of sliding when the cut surface slides in the space area.

9. In paragraph 8, A paper plate having a discharge port opening / closing means that forms an inclined space area (b) by forming the upward slope at an angle of 1 degree so that the slide can be performed easily while minimizing the flow when sliding.

10. In any one of paragraphs 3, 4 or 7, When the cut surface (121) of the above intermediate layer is connected to the paper sheet forming the intermediate layer by the connection point (124) and overlapped in a triple structure, it is possible to provide ease of overlap. A paper plate equipped with a discharge opening / closing means that can provide a warranty function that can check whether the paper cap has already been opened when using a paper plate equipped with a discharge opening / closing means

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