Paper buckle, paper cup cover, paper cup and combined cup cover

Abstract

The present invention discloses a paper buckle sheet, a paper cup cover, a paper cup and a combined cup cover, and relates to the technical field of cups. The combined cup cover comprises a paper buckle sheet and a paper cup cover, and the paper buckle sheet and the paper cup cover are buckled together, and a first air chamber and a second air chamber separated from each other are provided between the paper buckle sheet and the paper cup cover. The paper buckle sheet comprises a buckle sheet partition, an annular portion, an extension portion and a fastener. The paper cup cover comprises a low platform partition, an outer ring high platform portion, an inner ring high platform portion, an outer side wall and an annular convex rib portion. The paper cup comprises a cup body and a cup bottom, wherein the cup body comprises an annular side wall, an upper annular inclined side wall and an inverted hook portion, and the cup body also comprises an upper annular platform or a lower annular platform. The present invention combines the paper buckle sheet and the paper cup cover to effectively prevent the leakage of beverage from the drinking mouth.

Description

Technical Field

[0001] The invention relates to the technical field of cups, and in particular to a paper buckle, a paper cup cover, a paper cup and a combined cup cover. Background Art

[0002] Plastic cups and lids are widely used in daily life, especially in the catering industry and take-away beverage occasions. Plastic cups are usually light, strong and transparent, allowing the color and appearance of the beverage to be clearly seen at a glance. The lids usually have a tight seal that can effectively prevent the beverage from leaking, ensuring that users can carry the beverage conveniently.

[0003] However, there are also some problems with using plastic cups and cup lids. For example, most plastic cups and cup lids are made of petrochemical raw materials, and their biodegradation cycle is extremely long, which has a negative impact on the environment. The use of a large number of plastic cups and cup lids leads to the accumulation of plastic waste, affecting the ecological balance. Some plastic cups and cup lids may contain harmful substances, such as bisphenol A (BPA) and other chemicals, which may pose a potential threat to human health if used for a long time. Although existing plastic cup lids have good sealing properties, sometimes the vapor pressure of the hot drink in the cup increases, causing the lid to accidentally fall off, causing the hot drink to spill out. In addition, disposable plastic cups and cup lids can also have adverse effects on the environment, and the waste disposal process is also complicated.

[0004] Therefore, exploring and promoting more environmentally friendly and safer alternative materials and designs will help solve these problems. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a paper buckle piece, a paper cup cover, a paper cup and a combined cup cover.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A combined cup cover comprises a paper buckle sheet and a paper cup cover, wherein the paper buckle sheet is provided with a buckle sheet partition, and the paper cup cover is provided with a low platform partition, the buckle sheet partition of the paper buckle sheet clamps the low platform partition of the paper cup cover, and the paper buckle sheet and the paper cup cover are buckled together; the paper buckle sheet comprises a first buckle sheet bottom and a second buckle sheet bottom, and the paper cup cover comprises a first cup cover bottom and a second cup cover bottom; a first air chamber and a second air chamber separated from each other are provided between the paper buckle sheet and the paper cup cover, and a first air chamber is formed between the first buckle sheet bottom and the first cup cover bottom, and a second air chamber is formed between the second buckle sheet bottom and the second cup cover bottom.

[0008] A paper buckle, which is integrally molded from plant fiber pulp and applied to a modular cup cover, also includes an annular portion, an extension portion and a fastener; the annular portion is located at the edge of the paper buckle; a buckle partition spans the annular portion, and both ends of the buckle partition are connected to the annular portion; the bottom of the first buckle is located inside the annular portion and on one side of the buckle partition; the bottom of the second buckle is located inside the annular portion and on the other side of the buckle partition; the extension portion extends from the annular portion and is adjacent to the bottom of the first buckle portion, and the extension portion is used to span a drinking opening at the edge of the paper cup cover; the fastener is located on the extension portion and is embedded in the drinking opening.

[0009] Based on the above technical solution, further, a first pressure line is provided between the extension portion and the annular portion, so that the fastener can swing up and down together with the extension portion, and the first pressure line is a fold line or a tear line.

[0010] Based on the above technical solution, further, the height of the bottom of the first buckle piece is smaller than the height of the annular portion and the buckle piece separator, and the height of the bottom of the second buckle piece is smaller than the height of the annular portion and the buckle piece separator.

[0011] Based on the above technical solution, further, an engaging protrusion is provided on the bottom of the second buckle piece, and the annular portion has a notch at each end corresponding to the buckle piece dividing portion. When the extension portion is flipped upward and the paper buckle piece is folded upward along the buckle piece dividing portion and these notches, the engaging protrusion can be engaged with the fixed fastener.

[0012] A paper cup cover is integrally molded from plant fiber pulp and applied to a combined cup cover, and also includes an outer ring high platform, an inner ring high platform, an outer side wall and an annular convex rib; the outer ring high platform is provided with a drinking port; the inner ring low platform is located on the inner side of the outer ring high platform; the low platform partition spans the inner ring low platform, and both ends of the low platform partition are connected to the inner ring low platform; the bottom of the first cup cover is located inside the inner ring low platform, and is located on one side of the low platform partition and adjacent to the drinking port; the bottom of the second cup cover is located inside the inner ring low platform, and is located on the other side of the low platform partition; the upper edge of the outer side wall surrounds and connects to the outer ring high platform; the annular convex rib surrounds and connects to the lower edge of the outer side wall, and the internal space of the annular convex rib is used to accommodate the upper edge of the cup body.

[0013] Based on the above technical solution, further, a buckle piece convex rib is provided on the inner side of the outer ring platform portion to clamp the upper side of the peripheral edge of the paper buckle piece to prevent the paper buckle piece from falling off the paper cup cover.

[0014] Based on the above technical solution, further, a cup body convex rib portion is provided on the inner side of the peripheral side wall of the annular convex rib portion to clamp the upper edge of the cup body to prevent the paper cup cover from falling off the cup body.

[0015] Based on the above technical solution, further, the height of the inner ring low platform portion is smaller than the height of the outer ring high platform portion; the height of the bottom of the first cup cover is smaller than the height of the inner ring low platform portion and the low platform dividing portion; the height of the bottom of the second cup cover is smaller than the height of the inner ring low platform portion and the low platform dividing portion.

[0016] Based on the above technical solution, further, the bottom of the second cup cover is provided with a cup cover air hole, the bottom of the second buckle plate is provided with a buckle plate air hole, and the opening positions of the cup cover air hole and the buckle plate air hole do not overlap.

[0017] An integrally formed paper cup, used for a combined cup lid, comprises a cup body and a cup bottom; the cup body comprises an annular side wall, an upper annular platform, an upper annular inclined side wall and an inverted hook; the inner edge of the upper annular platform is connected to the upper edge of the annular side wall; the lower edge of the upper annular inclined side wall is connected to the outer edge of the upper annular platform; the inverted hook is connected to the upper edge of the upper annular inclined side wall to facilitate fixing a cup lid; the cup bottom comprises a central part and an annular groove; the annular groove surrounds the central part, wherein the upper edge of the inner side wall of the annular groove is connected to the central part, and the upper edge of the outer side wall of the annular groove is connected to the lower edge of the annular side wall.

[0018] Based on the above technical solution, further, the diameter of the lower edge of the upper annular inclined side wall is smaller than the diameter of the upper edge of the upper annular inclined side wall.

[0019] An integrally formed paper cup, used for a combined cup lid, comprises a cup body and a cup bottom; the cup body comprises an annular side wall, a lower annular platform, a lower annular inclined side wall and an inverted hook; the outer edge of the lower annular platform is connected to the lower edge of the annular side wall; the upper edge of the lower annular inclined side wall is connected to the inner edge of the lower annular platform; the inverted hook is connected to the upper edge of the annular side wall to facilitate fixing a cup lid; the cup bottom comprises a central part and an annular groove; the annular groove surrounds the central part, wherein the upper edge of the inner side wall of the annular groove is connected to the central part, and the upper edge of the outer side wall of the annular groove is connected to the lower edge of the lower annular inclined side wall.

[0020] Based on the above technical solution, further, the diameter of the lower edge of the lower annular inclined side wall is smaller than the diameter of the upper edge of the lower annular inclined side wall.

[0021] Based on the above technical solution, further, the inner surface of the annular side wall is provided with a plurality of demoulding lines for demoulding the paper cup.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The paper buckle and paper cup lid provided by the present invention are both made of environmentally friendly plant fiber materials. The design of the pressure line on the paper buckle can more conveniently use the buckle to prevent the drink from leaking out of the cup lid drinking mouth. The unique design of the cup lid air hole and the air chamber between the paper cup lid and the paper buckle can allow the air chamber to contain the drink splashed from the cup body without overflowing.

[0024] (2) The design of the air holes of the paper buckle in the present invention can also allow the steam of the hot beverage in the second air chamber of the combined cup cover to be dissipated to the outside, thereby timely reducing the steam pressure inside the cup body, making it difficult for the combined cup cover to fall off due to excessive steam pressure inside the cup body.

[0025] (3) The low platform partition of the paper cup cover and the buckle partition of the paper buckle in the present invention are designed to split the air chamber between the paper cup cover and the paper buckle into two, forming two independent air chambers, and the buckle air holes and the cup cover air holes are arranged on the upper and lower sides of the air chamber away from the drinking mouth, so that the splashed beverage will not flow to the drinking mouth and interfere with the user drinking the beverage in the cup body. In addition, the buckle ribs and the cup body ribs are used to securely fix the paper buckle and the paper cup cover, respectively, to increase the safety of use.

[0026] (4) The design of the annular platform and the annular inclined side wall of the present invention can facilitate the removal of the stacked paper cups one by one. The design of the hook portion can conveniently fix the cup cover to ensure that the beverage in the paper cup is not easy to leak out. The demoulding design such as the demoulding line and the inclined groove can simplify the production process of paper cups and improve the production yield of paper cups. The design of the ventilation channel is particularly helpful for the heat dissipation of hot drinks and prevents the deformation of paper cups. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The diagram is an exploded three-dimensional schematic diagram of a combined cup cover and a cup body according to an embodiment of the present disclosure.

[0028] Figure 2 Illustration Figure 1 Schematic diagram of the assembly of the combined cup cover.

[0029] Figure 3 Illustration Figure 2 A schematic cross-sectional structure diagram of a tangent line AA' passing through the air hole of the paper cup lid and the drinking opening.

[0030] Figure 4 Department Display Figure 1 and Figure 2 Schematic diagram of the three-dimensional structure of the middle paper buckle.

[0031] Figure 5 Department Display Figure 1 and Figure 2 Schematic diagram of the three-dimensional structure of the paper cup lid.

[0032] Figure 6The figure is a schematic diagram of the three-dimensional structure of a paper cup when it is standing upright according to the first embodiment of the present disclosure.

[0033] Figure 7 The present invention is a schematic diagram of a three-dimensional structure of a paper cup when it is inverted according to the first embodiment of the present invention.

[0034] Figure 8 Tie Figure 6 Schematic diagram of the cross-sectional structure of the BB' section line.

[0035] Fig. 9 The diagram is a schematic three-dimensional structure diagram of a paper cup when it is standing upright according to the second embodiment of the present disclosure.

[0036] Fig.10 The diagram is a schematic diagram of the three-dimensional structure of a paper cup when it is inverted according to the second embodiment of the present disclosure.

[0037] Fig.11 Tie Fig. 9 Schematic diagram of the cross-sectional structure of the CC' section line.

[0038] Reference numerals: 100, paper buckle; 110, annular portion; 120, buckle separator; 122, notch; 124, second pressure line; 131, first buckle bottom; 132, second buckle bottom; 140, extension; 150, buckle; 160, first pressure line; 170, buckle air hole; 180, fitting convex part; 200, paper cup cover; 210, outer ring high platform; 212, drinking mouth; 214, buckle rib; 220, inner ring low platform; 230, low platform separator; 241, first cup cover bottom; 24 2. Bottom of the second cup cover; 250. Outer side wall; 260. Annular rib; 262. Peripheral side wall; 264. Cup body rib; 270. Cup cover air hole; 300. Paper cup; 400. Cup body; 401. First air chamber; 402. Second air chamber; 410. Annular side wall; 421. Upper annular platform; 422. Lower annular platform; 431. Upper annular inclined side wall; 432. Lower annular inclined side wall; 440. Undercut; 450. Demolding line; 500. Cup bottom; 510. Central part; 520. Annular groove. DETAILED DESCRIPTION

[0039] The present invention is further described and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly without conflicting with each other.

[0040] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation mode of the present invention is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The technical features in each embodiment of the present invention can be combined accordingly without conflicting with each other.

[0041] In the description of the present invention, it is to be understood that when an element is considered to be "connected" to another element, it may be directly connected to the other element or indirectly connected, that is, there are intermediate elements. On the contrary, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0042] Example 1

[0043] Figure 1 The diagram is an exploded three-dimensional schematic diagram of a combined cup cover and a cup body according to an embodiment of the present disclosure. Figure 2 Illustration Figure 1 The assembly diagram of the combined cup cover is shown in Figure 1. Figure 1 and Figure 2 In the figure, it can be seen that the combined cup cover includes a paper buckle sheet 100 and a paper cup cover 200. After the paper buckle sheet 100 and the paper cup cover 200 are combined, they can be covered on a cup body 400.

[0044] Figure 3 Illustration Figure 2 A schematic cross-sectional structure diagram of a tangent line AA' passing through the air hole of the paper cup lid and the drinking opening. Figure 4 Department Display Figure 1 and Figure 2 Schematic diagram of the three-dimensional structure of the middle paper buckle. Please also refer to Figure 3 and Figure 4 .exist Figure 3 and Figure 4 In the embodiment, the paper buckle 100 is integrally molded from plant fiber pulp and comprises an annular portion 110 , a buckle partition 120 , a first buckle bottom 131 , a second buckle bottom 132 , an extension portion 140 and a buckle 150 .

[0045] The annular portion 110 is located at the edge of the paper buckle 100. The buckle partition 120 spans the annular portion 110, and both ends of the buckle partition 120 are connected to the annular portion 110. The first buckle bottom 131 is located inside the annular portion 110 and on one side of the buckle partition 120, and the height of the first buckle bottom 131 is less than the height of the annular portion 110 and the buckle partition 120. The second buckle bottom 132 is located inside the annular portion 110 and on the other side of the buckle partition 120, and the second buckle bottom 132 is located on the opposite side of the first buckle bottom 131, and the height of the second buckle bottom 132 is less than the height of the annular portion 110 and the buckle partition 120.

[0046] The extension portion 140 extends from the annular portion 110 and is adjacent to the first buckle bottom 131. The extension portion 140 is used to cross the drinking opening 212 at the edge of the cup cover. The buckle 150 is located on the extension portion 140 and protrudes downward to fit with the drinking opening 212 at the edge of the cup cover to prevent the beverage from leaking out of the drinking opening 212.

[0047] According to one embodiment, a first pressure line 160 is included between the extension portion 140 and the annular portion 110, so that the fastener 150 can swing up and down with the extension portion 140, so that the fastener 150 can be pressed down to fit with the outer side wall 250 of the paper cup cover 200, or lifted up to detach from the drinking mouth of the cup cover. The first pressure line 160 can be a fold line or a tear line. When the first pressure line 160 is a fold line, the extension portion 140 cannot be torn off from the paper buckle sheet 100, but the extension portion 140 can be folded up along the first pressure line 160. However, when the first pressure line 160 is a tear line, the user can easily tear off the extension portion 140 along the tear line.

[0048] According to one embodiment, the paper buckle 100 further includes an engaging protrusion 180. The engaging protrusion 180 is located on the second buckle bottom 132, and the annular portion 110 has a notch 122 at each of the two ends corresponding to the buckle partition 120. According to one embodiment, the height of the engaging protrusion 180 is greater than the height of the annular portion 110 and the buckle partition 120. Therefore, when the paper buckle 100 is folded upward along the second pressing line 124 of the buckle partition 120 that crosses the notches 122, the engaging protrusion 180 can be easily engaged and fixed on the buckle 150, and the second pressing line 124 can be a fold line.

[0049] According to one embodiment, the paper buckle 100 further includes a buckle air hole 170. The buckle air hole 170 is disposed in the second buckle bottom 132. Therefore, if the cup body 400 contains hot beverages, steam can also diffuse from the buckle air hole 170 to the outside to maintain the pressure balance inside the cup body 400.

[0050] Figure 5 Department Display Figure 1 and Figure 2 Schematic diagram of the three-dimensional structure of the paper cup cover. Please also refer to Figure 3 and Figure 5 .exist Figure 3 and Figure 5 In the embodiment, the paper cup cover 200 is integrally molded from plant fiber pulp, and includes an outer ring high platform portion 210, an inner ring low platform portion 220, a low platform partition portion 230, a first cup cover bottom 241, a second cup cover bottom 242, an outer side wall 250 and an annular convex rib portion 260.

[0051] The outer ring platform 210 is provided with a drinking opening 212, into which the fastener 150 of the paper buckle sheet 100 can be inserted, so as to prevent the beverage contained in the cup body 400 below the paper cup cover 200 from leaking out from the drinking opening 212. The inner side of the outer ring platform 210 has a buckle sheet rib 214 for clamping the upper side of the peripheral edge of the paper buckle sheet 100 to prevent the paper buckle sheet 100 from falling off the paper cup cover 200.

[0052] The inner ring low platform portion 220 is located inside the outer ring high platform portion 210, and the height of the inner ring low platform portion 220 is smaller than the height of the outer ring high platform portion 210. The low platform partition portion 230 spans the inner ring low platform portion 220, and both ends of the low platform partition portion 230 are connected to the inner ring low platform portion 220.

[0053] The first cup cover bottom 241 is located inside the inner ring low platform 220 and on a first side of the low platform partition 230 and adjacent to the drinking port 212, and the height of the first cup cover bottom 241 is less than the height of the inner ring low platform 220 and the low platform partition 230. The second cup cover bottom 242 is located inside the inner ring low platform 220 and on a second side of the low platform partition 230, and the height of the second cup cover bottom 242 is less than the height of the inner ring low platform 220 and the low platform partition 230. The above-mentioned paper cup cover 200 includes a cup cover air hole 270, which is arranged in the second cup cover bottom 242.

[0054] The upper edge of the outer wall 250 surrounds and connects the upper edge of the outer ring platform 210. The annular rib portion 260 surrounds and connects the lower edge of the outer wall 250, and the inner space of the annular rib portion 260 is used to accommodate the upper edge of the cup body 400. According to one embodiment, the inner side of the peripheral side wall 262 of the annular rib portion 260 may also have a cup body rib portion 264 to clamp the lower part of the upper edge protrusion of the cup body 400 to prevent the paper cup cover 200 from falling off the cup body 400.

[0055] Based on the above, when the paper buckle 100 and the paper cup cover 200 are combined into a combined cup cover for use together, the paper buckle 100 is placed inside the outer ring high platform 210 and above the inner ring low platform 220 of the paper cup cover 200, wherein the inner ring low platform 220 is used to support the annular portion 110 of the paper buckle 100. In addition, the buckle convex rib 214 is provided on the inner side of the outer ring high platform 210 of the paper cup cover 200, which can also prevent the paper buckle 100 from falling off the paper cup cover 200, and allow the paper buckle 100 to easily rotate left and right on the paper cup cover 200. Therefore, if the first pressure line 160 of the extension part 140 of the above-mentioned paper buckle 100 is a fold line, after lifting the buckle 150, the buckle 150 can be exposed by gently rotating the paper buckle 100, so that the user can drink the beverage in the cup body 400. Of course, if the first pressure line 160 of the extension part 140 of the paper buckle 100 is a tear line, the extension part 140 can be directly torn off along the first pressure line 160 and the second pressure line 124, so that the buckle 150 is exposed, which is convenient for the user to drink the beverage in the cup body 400. In addition, the paper buckle 100 can be directly folded upward along the second pressure line 124 of the buckle partition 120, so that the engaging protrusion 180 is engaged and fixed on the buckle 150, so that the buckle 150 is exposed, which is convenient for the user to drink the beverage in the cup body 400.

[0056] In addition, the buckle partition 120 of the paper buckle 100 clamps the low platform partition 230 of the paper cup cover 200, so that the paper buckle 100 and the paper cup cover 200 form a first air chamber 401 located between the first buckle bottom 131 and the first cup cover bottom 241 and a second air chamber 402 located between the second buckle bottom 132 and the second cup cover bottom 242. Moreover, the position of the buckle air hole 170 located in the second buckle bottom 132 and the position of the cup cover air hole 270 located in the second cup cover bottom 242 do not overlap.

[0057] Therefore, when the cup body 400 is filled with hot drinks, if the liquid and water vapor of the hot drinks rush out of the cup body 400, they can flow into the second air chamber 402 through the cup cover air holes 270 located at the bottom 242 of the second cup cover, and be blocked by the paper buckle sheet 100, without overflowing and causing the risk of scalding. Subsequently, the liquid can flow back to the cup body 400 through the cup cover air holes 270 of the paper cup cover 200. In addition, the positions of the buckle sheet air holes 170 on the paper buckle sheet 100 and the cup cover air holes 270 of the paper cup cover 200 do not overlap, so that in addition to allowing the steam to be discharged from the buckle sheet air holes 170 of the paper buckle sheet 100, it can also prevent the hot drinks rushing into the second air chamber 402 from directly overflowing from the buckle sheet air holes 170 to the external environment, causing scalding accidents to users, and further increase the safety of the combined cup cover in use.

[0058] However, the first air chamber 401 is basically provided with no air holes, so no beverage will overflow into the first air chamber 401. Therefore, if the fastener 150 of the paper fastener 100 is lifted up and turned over to be fixed by the engaging protrusion 180 as described above, when the user wants to drink the beverage in the cup body 400, he will not be disturbed by the beverage overflowing into the second air chamber 402.

[0059] As can be seen from the above, the paper buckle and paper cup cover provided by the present disclosure, after being combined into a cup cover, have at least the following advantages:

[0060] 1. Application of environmentally friendly materials: This technology uses plant fiber pulp for integral molding, and both the paper buckle 100 and the paper cup cover 200 use environmentally friendly plant fiber materials. Compared with traditional plastic materials, this application helps reduce dependence on petrochemical resources and reduce environmental impact.

[0061] 2. Superior leak-proof design: The separated first air chamber 401 and second air chamber 402 are effectively prevented from spilling out of the beverage to the outside and the first air chamber near the drinking opening. This design ensures that during normal use, liquid will not leak out to the outside and affect the user's drinking. The air hole also maintains the pressure balance in the cup.

[0062] 3. Convenient use experience: After assembly, the structure between the paper buckle 100 and the paper cup cover 200 can prevent spilled beverages from interfering with the user's drinking. The user can easily lift the buckle and fit it together to expose the drinking mouth and conveniently drink the beverage in the cup.

[0063] 4. Increased safety: The above disclosed careful design takes into account the safety of the user, especially when handling hot drinks. The combination of multiple air chambers, air holes and fasteners 150 effectively reduces the risk of hot drinks spilling, and improves the safety of the entire combined cup cover.

[0064] 5. Stable fixing design: The buckle rib 214 on the inner side of the outer ring platform 210 and the cup body rib 264 on the peripheral side wall 262 of the annular rib 260 ensure the firm fixing of the paper buckle 100 and the paper cup cover 200. This design improves the safety of use and reduces the possibility of accidental falling off of the paper buckle 100 and the paper cup cover 200.

[0065] Example 2

[0066] Figure 6 The figure is a schematic diagram of the three-dimensional structure of a paper cup when it is standing upright according to the first embodiment of the present disclosure. Figure 8 Tie Figure 6 Please also refer to the BB' section structure diagram. Figure 6 and Figure 8 .exist Figure 6 and Figure 8 In the embodiment, the paper cup is integrally molded from plant fiber pulp. The paper cup 300 includes a cup body 400 and a cup bottom 500.

[0067] The cup body 400 includes an annular sidewall 410, an upper annular platform 421, an upper annular inclined sidewall 431 and an undercut portion 440. The inner edge of the upper annular platform 421 is connected to the upper edge of the annular sidewall 410. The lower edge of the upper annular inclined sidewall 431 is connected to the outer edge of the upper annular platform 421, and the diameter of the lower edge of the upper annular inclined sidewall 431 is smaller than the diameter of the upper edge of the upper annular inclined sidewall 431.

[0068] The design of the upper annular platform 421 and the upper annular inclined side wall 431 allows the upper annular platform 421 of the upper paper cup 300 to be stuck on the hook portion 440 of the lower paper cup even if the paper cups 300 are stacked together, so that the paper cups can be easily taken out one by one. This design facilitates the storage and use of the paper cups 300 and increases the convenience of use.

[0069] The hook portion 440 is connected to the upper edge of the upper annular inclined side wall 431. The inner groove below the hook portion 440 can clamp the cup body rib 264 of the paper cup cover 200, so that the paper cup cover 200 can be stably fixed on the paper cup 300 to prevent the liquid in the paper cup 300 from leaking out due to the user's instability in action.

[0070] Since the paper cup provided by the present disclosure is integrally formed, when the ratio of the height of the cup body 400 to the diameter of the cup body 400 (i.e., the aspect ratio) is greater than 13:6, the difficulty of demolding the paper cup 300 will increase significantly. Therefore, the inner surface of the annular side wall 410 may also have a plurality of demolding lines 450 to facilitate demolding of the paper cup 300 and increase the yield of the paper cup 300. Therefore, when manufacturing a paper cup 300 with a larger aspect ratio, it is no longer necessary to design different molds to meet the needs, thereby simplifying the manufacturing process of the paper cup.

[0071] Figure 7 This is a schematic diagram of the three-dimensional structure of a paper cup when it is inverted according to the first embodiment of the present disclosure. Figure 7 and Figure 8 In the embodiment, the cup bottom 500 includes a central portion 510 and an annular groove 520 .

[0072] The annular groove 520 surrounds the central portion 510, the upper edge of the inner side wall of the annular groove 520 is connected to the central portion 510, and the upper edge of the outer side wall of the annular groove 520 is connected to the lower edge of the annular side wall 410. Therefore, when the paper cup is upright, the height of the central portion 510 of the cup bottom 500 is higher than the bottom of the annular groove 520, so that there can be a distance between the tabletop or other supporting surface where the paper cup is placed and the central portion 510 of the cup bottom 500.

[0073] Fig. 9 The diagram is a schematic three-dimensional structure diagram of a paper cup when it is standing upright according to the second embodiment of the present disclosure. Fig.11 Tie Fig. 9 The cross-sectional structure diagram of the CC' section line. Please also refer to Fig. 9 and Fig.11 .exist Fig. 9 and Fig.11 In the invention, the paper cup is integrally molded from plant fiber pulp and comprises a cup body 400 and a cup bottom 500.

[0074] The cup body 400 includes an annular sidewall 410, a lower annular platform 422, a lower annular inclined sidewall 432 and an undercut portion 440. The outer edge of the lower annular platform 422 is connected to the lower edge of the annular sidewall 410. The upper edge of the lower annular inclined sidewall 432 is connected to the inner edge of the lower annular platform 422, and the diameter of the lower edge of the lower annular inclined sidewall 432 is smaller than the diameter of the upper edge of the lower annular inclined sidewall 432. The undercut portion 440 is connected to the upper edge of the annular sidewall 410.

[0075] The design of the lower annular platform 422 and the lower annular inclined side wall 432 allows the annular groove 520 of the cup bottom 500 of the upper paper cup to be stuck on the lower annular platform 422 of the lower paper cup even if the paper cups are stacked together, so that the paper cups can be easily taken out one by one. This design facilitates the storage and use of paper cups and increases the convenience of use.

[0076] The hook portion 440 is connected to the upper edge of the annular side wall 410. The inner groove below the hook portion 440 can clamp the cup body rib 264 of the cup cover 200, so that the cup cover 200 can be stably fixed on the paper cup to prevent the liquid in the paper cup from leaking out due to the user's unstable movement.

[0077] Since the paper cup provided by the present disclosure is integrally formed, when the ratio of the height of the cup body to the diameter of the cup body (i.e., the aspect ratio) is greater than 13:6, the difficulty of demolding the paper cup will increase significantly. Therefore, the inner surface of the annular side wall 410 may also have a plurality of demolding lines 450 to facilitate demolding of the paper cup and increase the yield of the paper cup. Therefore, when manufacturing a paper cup with a large aspect ratio, it is no longer necessary to design different molds to meet the needs, thereby simplifying the process of manufacturing the paper cup.

[0078] Fig.10 This is a schematic diagram of the three-dimensional structure of a paper cup when it is inverted according to the second embodiment of the present disclosure. Fig.10 and Fig.11 In the embodiment, the cup bottom 500 includes a central portion 510 and an annular groove 520 .

[0079] The annular groove 520 surrounds the central portion 510, the upper edge of the inner side wall of the annular groove 520 is connected to the central portion 510, and the upper edge of the outer side wall of the annular groove 520 is connected to the lower edge of the lower annular inclined side wall 432. Therefore, when the paper cup is upright, the height of the central portion 510 of the cup bottom 500 is higher than the bottom of the annular groove 520, so that there can be a distance between the tabletop or other supporting surface where the paper cup is placed and the central portion 510 of the cup bottom 500.

[0080] From the above, it can be seen that the paper cup provided by the present disclosure has at least the following advantages.

[0081] 1. Convenient stacking: The design of the annular platform and the annular inclined side wall makes it easy to take out the stacked paper cups one by one. This design facilitates the storage and use of paper cups and increases the convenience of use.

[0082] 2. Leak-proof design: The introduction of the hook allows the paper cup to easily fix the cup lid, effectively preventing the beverage in the paper cup from leaking out. This design ensures the safety of the beverage in the paper cup, especially when used on the move.

[0083] 3. Improved production efficiency: Demolding designs such as demoulding lines and bevel grooves simplify the manufacturing process of paper cups and help improve the production yield of paper cups. This optimization reduces the complexity of the manufacturing process, especially for paper cups that need to be formed in one piece.

[0084] 4. Heat dissipation for hot drinks: The raised center of the bottom of the cup can prevent excessive heat from affecting the structure of the paper cup, thereby preventing the paper cup from deforming.

[0085] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A combined cup cover, characterized in that: It comprises a paper buckle sheet and a paper cup cover, wherein the paper buckle sheet is provided with a buckle sheet partition, and the paper cup cover is provided with a low platform partition, the buckle sheet partition of the paper buckle sheet clamps the low platform partition of the paper cup cover, and the paper buckle sheet and the paper cup cover are buckled together; the paper buckle sheet comprises a first buckle sheet bottom and a second buckle sheet bottom, and the paper cup cover comprises a first cup cover bottom and a second cup cover bottom; a first air chamber and a second air chamber separated from each other are provided between the paper buckle sheet and the paper cup cover, and a first air chamber is formed between the first buckle sheet bottom and the first cup cover bottom, and a second air chamber is formed between the second buckle sheet bottom and the second cup cover bottom.

2. A paper buckle sheet, applied to a combined cup cover according to claim 1, characterized in that: Also includes a ring portion, an extension portion and a fastener; The ring portion is located at the edge of the paper buckle piece; The buckle plate partition part spans across the annular part, and two ends of the buckle plate partition part are connected to the annular part; The bottom of the first buckle piece is located inside the annular portion and on one side of the buckle piece partition portion; The bottom of the second buckle piece is located inside the annular portion and on the other side of the buckle piece partition; An extension portion extending from the annular portion and adjacent to the bottom of the first buckle piece, the extension portion being used to cross over the drinking opening at the edge of the paper cup cover; The fastener is located on the extension portion and is engaged with the drinking opening.

3. A paper buckle according to claim 2, characterized in that: There is a space between the extension portion and the annular portion. The first pressing line allows the fastener to swing up and down together with the extending portion, and the first pressing line is a folding line or a tearing line.

4. A paper buckle according to claim 2, characterized in that: The height of the bottom of the first buckle piece is smaller than the height of the annular portion and the buckle piece dividing portion, and the height of the bottom of the second buckle piece is smaller than the height of the annular portion and the buckle piece dividing portion.

5. A paper buckle according to claim 2, characterized in that: An engaging protrusion is provided on the bottom of the second buckle piece, and the annular portion has a notch at each end corresponding to the buckle piece partition. When the extension portion is turned up and the paper buckle piece is folded upward along the buckle piece partition and the notch, the engaging protrusion can be engaged with the fixed buckle.

6. A paper cup cover, applied to the combined cup cover according to claim 1, characterized in that: It also includes an outer ring high platform portion, an inner ring low platform portion, an outer side wall and an annular convex rib portion; The outer ring platform is provided with a drinking spout; The inner ring low platform portion is located inside the outer ring high platform portion; The low platform partition part spans across the inner ring low platform part, and both ends of the low platform partition part are connected to the inner ring low platform part; The bottom of the first cup cover is located inside the inner ring low platform portion, and is located on one side of the low platform partition portion and adjacent to the drinking mouth; The bottom of the second cup cover is located inside the low platform portion of the inner ring and on the other side of the low platform partition portion; The upper edge of the outer side wall surrounds and connects to the outer ring high platform portion; The annular convex rib surrounds and connects the lower edge of the outer side wall, and the inner space of the annular convex rib is used to accommodate the upper edge of the cup body.

7. A paper cup cover according to claim 6, characterized in that: The inner side of the outer ring high platform is provided with a buckle piece convex rib part for clamping the upper side of the peripheral edge of the paper buckle piece to prevent the paper buckle piece from falling off the paper cup cover.

8. The paper cup cover according to claim 6, characterized in that: The inner side of the peripheral side wall of the annular convex rib portion is provided with a cup body convex rib portion for clamping the upper edge of the cup body to prevent the paper cup cover from falling off the cup body.

9. The paper cup cover according to claim 6, characterized in that: The height of the inner ring low platform portion is smaller than the height of the outer ring high platform portion; the height of the bottom of the first cup cover is smaller than the height of the inner ring low platform portion and the low platform dividing portion; the height of the bottom of the second cup cover is smaller than the height of the inner ring low platform portion and the low platform dividing portion.

10. A paper cup cover according to any one of claims 7 to 9, characterized in that: The bottom of the second cup cover is provided with a cup cover air hole, the bottom of the second buckle plate is provided with a buckle plate air hole, and the opening positions of the cup cover air hole and the buckle plate air hole do not overlap.

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