WO2020233560A1

WO2020233560A1 - Ultrasonic-welding-type leakage-proof beverage cup cover

Info

Publication number: WO2020233560A1
Application number: PCT/CN2020/091004
Authority: WO
Inventors: 严毅钧
Original assignee: 格来纳塑料科技（苏州）有限公司
Priority date: 2019-05-21
Filing date: 2020-05-19
Publication date: 2020-11-26
Also published as: CN110053864A; CN110053864B

Abstract

Provided is an ultrasonic-welding-type leakage-proof beverage cup cover, comprising a cover body (1) and a sealing cover (2). A groove (10a) is formed in a panel (10) of the cover body (1). An annular flange (11) is formed between a side wall face of the groove (10a), the panel (10) and a circumferential profile face of the cover body (1). A drinking opening (1b) is located on one side of the annular flange (11), and a leakage receiving cavity (1a) is located on the opposite side of the drinking opening (1b). An avoidance cavity (1d) is further provided between the leakage receiving cavity (1a) and the drinking opening (1b). The sealing cover (2) comprises a first cover plate (21) ultrasonically welded to an edge of an opening portion of the leakage receiving cavity (1a) and closing the leakage receiving cavity (1a), a second cover plate (22) connected to the first cover plate (21) in a turnover manner and capable of closing the avoidance cavity (1d), a third cover plate (23) extending from an end portion of the second cover plate (22) to the drinking opening (1b), and a cover plug (24).

Description

Ultrasonic welding type leak-proof beverage cup cover

Technical field

The invention belongs to the field of beverage cup lids, and specifically relates to an ultrasonic welding type leak-proof beverage cup lid.

Background technique

At present, there are many designs for beverage cup lids. The most common is that the cup lid is provided with a cannula hole and a vent, and then the straw is inserted into the cup body to drink, or the lid can be closed and opened. Drinking mouth, when drinking, directly open the drinking mouth, you can drink.

However, for hot drinks, such as coffee, there are vents and drinking ports on the cup lid. The vents are mainly used to release the internal heat pressure and prevent the cup lid from detaching from the cup body. Shaking makes it easy for coffee to leak out of the cup lid from the vents, causing complaints and complaints from buyers. Therefore, it not only increases the difficulty of delivery, but may also affect coffee sales.

However, in response to the above problems, the applicant submitted a patent number on 2018.1.15: 201810036288.6; the patent name is: a leak-proof and easy-to-open hot drink cup lid, and specifically discloses the following technical solutions: A leaky and easy-to-open hot drink cup lid, comprising a lid body, the lid body is provided with a drinking port, a vent hole, and a leak cavity, wherein the vent hole is located on the leak cavity, the leak cavity is also provided The hot drink that leaked into the leaking cavity can be returned to the return hole in the hot drink cup. The lid of the hot drink cup also includes a cover that closes the leaking cavity, and a stopper that is connected to the cover and can close the drinking port, wherein the cover It can be rotated around the center of the leakage cavity, and the cover is provided with a vent hole that communicates with the vent hole and discharges the hot air in the leakage cavity out of the cover body.

Therefore, under the premise of ensuring unobstructed stomata, the phenomenon of leakage of hot drinks in the cup from the pressure relief stomata is completely eliminated. At the same time, without leakage, the drinking port can be opened or closed multiple times by rotating the opening method for drinking. In addition, it is not only convenient for delivery, but also can change the shape of the lid, which is more humane and accepted and favored by consumers, and it is easier to attract consumers.

However, the applicant found that because there is no seal between the leaking cavity and the cover during use, once the bumps are too large during the delivery process, the beverage that leaks into the leaking cavity may still leak. The design of the drinking mouth is not convenient for the user to place the upper lips, and the drinking comfort is low.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an improved ultrasonic welding type leak-proof beverage cup cover.

To solve the above technical problems, the present invention adopts the following technical solutions:

An ultrasonic welding type leak-proof beverage cup cover, which comprises a cover body with a leaking cavity, a drinking port and an exhaust hole; a sealing cover that closes the leaking cavity and the drinking port,

In particular, the panel of the cover body is formed with a groove depressed downward from the surface, wherein the side wall surface of the groove, the panel and the circumferential contour surface of the cover body form an annular protrusion, and the drinking port is located on one of the annular protrusions. On the side, the leakage cavity is located on the opposite side of the drinking port and is recessed downward from the bottom of the groove, and the vent is provided on the leakage cavity; a groove bottom from the groove is also provided between the leakage cavity and the drinking port Recessed cavity recessed downward, when the user drinks, the upper lip can be placed in the avoidance cavity;

The cover includes a first cover plate that is ultrasonically welded to the edge of the leakage cavity mouth and closes the leakage cavity, a second cover plate connected to the first cover plate and capable of closing the avoidance cavity, from the end of the second cover plate A third cover plate extending to the drinking port and a cover plug arranged at the bottom of the third cover plate and capable of closing the drinking port, wherein the first cover plate is provided with a through hole communicating with the exhaust hole.

Preferably, the leakage cavity has at least two cavities which are connected to each other. The vent hole is located at the bottom of one of the cavities, and the through hole is staggered from the vent hole, and is located on the corresponding first cover plate above the other cavities on. The communication of the cavity is mainly to facilitate the gas circulation in the cavity and to leak the hot air through the misplaced through holes and exhaust holes.

Preferably, an overflow channel connected to each other is formed from the top of every two adjacent cavities. As for the overflow channel, it means that when the beverage level in one cavity exceeds the position of the overflow channel, it will automatically flow to the other cavity. However, there is a special situation, that is, during the shaking process, part of it will sway to overflow. The flow channel thus flows in the two cavities.

Specifically, the bottom surface of the cavity is inclined from top to bottom, and the exhaust hole is located at the lower part of the bottom surface. By slanting the bottom surface, the liquid in the cavity can be returned to the cup from the vent hole.

According to a specific implementation and preferred aspect of the present invention, the avoidance cavity is gradually deepened from top to bottom, and the deeper end is set close to the drinking port. The advantage of this setting is that it is convenient for users to drink.

According to another specific implementation and preferred aspect of the present invention, the first cover plate and the second cover plate are connected from the middle to form an inverted connection part, wherein the inverted connection part separates the side edges connecting the first cover plate and the second cover plate When the cover is closed, the first cover plate, the second cover plate and the third cover plate are arranged flush with each other. The first cover plate and the second cover plate are formed between the opposite sides of the flip connection part. Interval groove; when the cover is opened for the user to drink, the third cover is lifted, and the second cover is turned over the first cover around the turning connection part, and the drinking port and escape cavity are in an open state. In this way, the drinking port can be repeatedly opened or closed, which is convenient for users to drink. Preferably, the spacing grooves are arc-shaped and are symmetrically arranged on opposite sides of the inverted connecting portion.

According to another specific implementation and preferred aspect of the present invention, the cover further includes a clamping module arranged on one of the two connecting sides of the first cover plate and the second cover plate corresponding to the spacing groove, and A card slot on the other side of the connection that matches the card module. The advantages of this design are: 1. Reasonable layout of the two cavities and avoidance cavity positions to realize that the leaking cavity is sealed under the premise that the cover can be repeatedly opened and closed to facilitate the user's drinking; 2. Increase the cover Styling to attract consumers.

Further, when the cover is closed, the peripheries of the first cover plate and the second cover plate are attached to the groove wall of the groove, and the outer end of the third cover plate is arranged outside of the annular protrusion. In this way, after the cover is closed, the locking module and the card slot cooperate to ensure the stability of the cover, and the cover stopper will not easily detach from the drinking port.

In addition, the first cover plate and the third cover plate are respectively provided with a first matching part and a second matching part, wherein when the cover is opened for the user to drink, the first matching part and the second matching part cooperate, the first The cover plate and the third cover plate are fixedly connected.

Preferably, the first matching portion is a clamping column positioned on the first cover plate, and the second matching portion is a clamping hole matching the clamping column. Through the cooperation of the card post and the card hole, it is convenient for users to drink.

Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

On the one hand, the present invention uses ultrasonic welding to close the leakage cavity under the premise of ensuring the normal pressure relief, which can greatly reduce the leakage probability during the delivery process; on the other hand, the cover can be turned over and can be repeatedly opened or The drinking mouth is closed to facilitate the user's drinking. At the same time, the avoiding cavity is set near the drinking mouth, so that the upper lip of the user has space when drinking, thereby improving the comfort for drinking. In addition, the unique shape makes it easier attract consumers.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the leak-proof beverage cup lid of the present invention;

Figure 2 is an exploded view of the structure of Figure 1;

Figure 3 is a schematic top view of Figure 1;

Figure 4 is a schematic cross-sectional view along the line A-A in Figure 3;

Among them: 1. cover body; 1a, leaking cavity; q, cavity; t, overflow channel; 1b, drinking port; 1c, vent; 1d, avoiding cavity; 10, panel; 10a, groove; 11. Ring flange;

2. Cover; 21, first cover; 21a, through hole; 21b, upright post; 22, second cover; 23, third cover; 23b, card hole; 24, cover plug; 25, flip connection part ; 26, snap-fit module; 27, card slot; 2c, spacing slot.

Detailed ways

In order to make the above objectives, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are explained in order to fully understand this application. However, this application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

In the description of this application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "Radial", "Circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply the device or The element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two components or the interaction relationship between two components, unless otherwise specified The limit. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In this application, unless expressly stipulated and defined otherwise, the “on” or “under” of the first feature on the second feature may be in direct contact with the first and second features, or indirectly through an intermediary. contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than the second feature. The first feature "below", "below" and "below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or it simply means that the level of the first feature is smaller than the second feature. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or a central element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not mean the only implementation.

As shown in Figures 1 and 2, the ultrasonic welded leak-proof beverage cup cover of this embodiment includes a cover body 1 having a leaking cavity 1a, a drinking port 1b, and an exhaust hole 1c; Cover 2 with mouth 1b closed.

Specifically, the panel 10 of the cover body 1 is formed with a groove 10 a recessed from the surface, wherein the side wall surface of the groove 10 a, the panel 10 and the circumferential contour surface of the cover body 1 form an annular flange 11.

In this example, the drinking port 1b is located on one side of the annular flange 11.

As shown in combination with FIG. 3, the width of the annular flange 11 is not uniform, that is, the groove 10 a is not in the center of the panel 10. At the same time, considering the size of the drinking port 1b, the left side is wide and the right side is narrow.

The leakage cavity 1a is located on the opposite side of the drinking port 1b and is recessed downward from the bottom of the groove 10a.

In this example, the leakage cavity 1a has two cavities q, and the overflow channels t communicating with each other from the top are connected with each other. As for the overflow channel t, it means that when the beverage level in one cavity q exceeds the position of the overflow channel t, it will automatically flow to another cavity. However, there is a special case, that is, during the shaking process, Part of it sloshes to the overflow channel t to flow in the two cavities.

Specifically, the bottom surface of the cavity q is inclined from top to bottom, and the exhaust hole 1c is located at the lower part of the bottom surface.

At the same time, between the leakage cavity 1a and the drinking port 1b, there is also an escape cavity 1d recessed from the bottom of the groove 10a. When the user drinks, the upper lip can be placed in the escape cavity 1d.

As shown in Figure 4, the avoidance cavity 1d gradually deepens from top to bottom, and the deeper end is set close to the drinking port 1b. The advantage of this setting is that it is convenient for the user to drink, so as to increase the user's drinking comfort.

The cover 2 includes a first cover plate 21 that is ultrasonically welded to the edge of the mouth of the leakage cavity 1a and closes the leakage cavity 1a, a second cover plate 22 that is inverted and connected to the first cover plate 21 and can close the escape cavity 1d, A third cover 23 extending from the end of the second cover 22 to the drinking port 1c, and a cover plug 24 provided at the bottom of the third cover 23 and capable of closing the drinking port 1c, wherein the first cover 21 is provided with A through hole 21a communicating with the exhaust hole 1c.

In this example, the through hole 21a and the exhaust hole 1c are staggered.

The first cover plate 21 and the second cover plate 22 are connected from the middle to form an inverted connection part 25, wherein the inverted connection part 25 separates the sides of the first cover plate 21 and the second cover plate 22 that are connected to each other. 2 When closing, the upper surfaces of the first cover 21, the second cover 22, and the third cover 23 are flush with each other, and the first cover 21 and the second cover 22 are formed on opposite sides of the flip connection 25 The interval slot 2c; when the cover 2 is opened for the user to drink, the third cover 23 is lifted, the second cover 22 is turned over the first cover 21 around the inverting connecting portion 25, the drinking port 1b and the escape cavity 1d Is open.

Specifically, the spacing groove 2c is in the shape of an arc and is symmetrically arranged on opposite sides of the inverted connecting portion 25. The advantages of this design are: 1. Reasonable layout of the two cavities and avoidance cavity positions to realize that the leaking cavity is sealed under the premise that the cover can be repeatedly opened and closed to facilitate the user's drinking; 2. Increase the cover Styling to attract consumers.

The cover 2 also includes a locking module 26 arranged on one of the two connecting sides of the first cover 21 and the second cover 22 corresponding to the spacing groove 2c, and arranged on the other connecting side And the card slot 27 that matches with the card module. In this way, after the cover 2 is closed, the locking module 26 and the slot 27 cooperate to ensure the stability of the cover 2 and the cover plug 24 will not easily detach from the drinking port 1b.

Of course, in the foregoing implementation process, the card slot 27 is not provided, and it is also possible that when the cover is closed, the card module 26 directly abuts on the other connecting side. That is to say, the real purpose of the locking module 26 is to ensure that the width of the spacing groove 2c will not change during the multiple opening and closing processes of the cover 2, thereby facilitating the alignment of the lid plug 2 and the drinking opening 1b, and The operation is also very convenient.

At the same time, in order to facilitate the user to drink, a column 21b is provided on the first cover plate 21, and a clamping hole 23b matching the clamping column 21b is formed on the third cover plate 23. When the cover is opened, the second cover plate 22 and The third cover plate 23 moves to the upper surface of the first cover plate 21 around the inverted connecting portion 25 until the upright 21b extends into the card hole 23b, so that the first cover plate 21, the second cover plate 22 and the third cover plate 23 Positioning.

In addition, in this example, the components of the cover 2 are integrally formed, and when the cover 2 is closed, the peripheries of the first cover 21 and the second cover 22 are attached to the groove wall of the groove 10a. The outer end of the three cover plate 13 emerges outside the annular flange 11 and is arranged.

As shown in FIGS. 3 and 4 again, the top surface of the annular flange 11 is flush, and the width of the top surface of the drinking opening 1b is greater than the width of the top surface of other parts. The advantage of this arrangement is that it facilitates the molding and processing of the drinking port 1b.

In summary, this embodiment has the following advantages:

1) Under the premise of ensuring normal pressure relief, ultrasonic welding is used to close the leakage cavity, which can greatly reduce the leakage probability during the delivery process and facilitate the delivery;

2) By the flip setting of the cover, the drinking port can be opened or closed repeatedly, which is convenient for the user to drink. At the same time, the flip part of the cover moves very stably during the process of opening and closing multiple times, and the reset position Relatively accurate, easy for users to manipulate;

3) By setting the avoidance cavity near the drinking port, the upper lip of the user has a place to place it when drinking, thereby improving the comfort of drinking;

4). Reasonably distribute the positions of the various cavities, and adopt the arc-shaped spacing groove setting, which makes the appearance of the whole cup cover more unique and easier to attract consumers.

The present invention has been described in detail above, and its purpose is to allow those skilled in the art to understand the content of the present invention and implement it, but it cannot limit the scope of protection of the present invention. Anything done in accordance with the spirit of the present invention, etc. The effect changes or modifications shall be covered by the protection scope of the present invention.

Claims

An ultrasonic welded leak-proof beverage cup lid, which comprises a lid body with a leaking cavity, a drinking port, and an exhaust hole; a cover that closes the leaking cavity and the drinking port, and is characterized in:

The panel of the cover body is formed with a groove recessed downward from the surface, wherein an annular protrusion is formed between the side wall surface of the groove, the panel and the circumferential contour surface of the cover body, the The drinking port is located on one side of the annular flange, the leakage cavity is located on the opposite side of the drinking port and is recessed downwardly from the bottom of the groove, and the exhaust hole is provided in the On the leakage cavity, between the leakage cavity and the drinking port, there is also an escape cavity recessed downward from the bottom of the groove. When the user drinks, the upper lip can be placed in the escape cavity, The depth of the escape cavity is gradually deepened, and the deeper end is set close to the drinking port, the leaking cavity has at least two cavities, and they are connected to each other, and the vent is located in one of the At the bottom of the cavity, the through hole is staggered from the exhaust hole, and is located on the first cover plate correspondingly disposed above the other cavities, and each two adjacent cavities are formed from the top There are mutually communicating overflow channels, the bottom surface of the cavity is inclined from top to bottom, and the exhaust hole is located at the lower part of the bottom surface;

The cover includes a first cover plate that is ultrasonically welded to the edge of the mouth of the leakage cavity and closes the leakage cavity, and a first cover plate that is connected to the first cover plate and can close the escape cavity. Two cover plates, a third cover plate extending from the end of the second cover plate to the drinking port, and a cover plug provided at the bottom of the third cover plate and capable of closing the drinking port, wherein The first cover is provided with a through hole communicating with the exhaust hole,

The first cover plate and the second cover plate are connected from the middle to form an inverted connection part, wherein the inverted connection part separates the side edges of the first cover plate and the second cover plate connected When the cover is closed, the first cover plate, the second cover plate and the third cover plate are arranged flush with each other. The first cover plate and the second cover plate Spaced slots on opposite sides of the flip connection part are formed between the cover plates; when the cover is opened for the user to drink, the third cover plate is lifted, and the second cover plate surrounds the flip The connecting portion is turned over the first cover, the drinking port and the escape cavity are in an open state,

The spacing groove is in the shape of an arc and is symmetrically arranged on opposite sides of the inverting connecting portion, and the cover further includes the first cover plate and the first cover provided in the spacing groove corresponding to the One of the two connecting sides of the second cover plate is connected with the clamping module on the side, and the clamping slot provided on the other connecting side and matched with the clamping module, when the cover is closed , The peripheries of the first cover plate and the second cover plate are attached to the groove wall of the groove, and the outer end of the third cover plate is arranged outside the annular flange, and The first cover and the third cover are respectively provided with a first matching portion and a second matching portion, wherein when the cover is opened for the user to drink, the first matching portion and the second matching portion The mating parts are matched, the first cover plate and the third cover plate are fixedly connected, the first mating part is a clamping post positioned on the first cover plate, and the second mating The part is a card hole matched with the card post.
An ultrasonic welded leak-proof beverage cup lid, which comprises a lid body with a leaking cavity, a drinking port, and an exhaust hole; a cover that closes the leaking cavity and the drinking port, and is characterized in:

The panel of the cover body is formed with a groove recessed downward from the surface, wherein an annular protrusion is formed between the side wall surface of the groove, the panel and the circumferential contour surface of the cover body, the The drinking port is located on one side of the annular flange, the leakage cavity is located on the opposite side of the drinking port and is recessed downwardly from the bottom of the groove, and the exhaust hole is provided in the On the leaking cavity; between the leaking cavity and the drinking port, there is also an escape cavity recessed downward from the bottom of the groove. When the user drinks, the upper lip can be placed in the escape cavity;

The cover includes a first cover plate that is ultrasonically welded to the edge of the mouth of the leakage cavity and closes the leakage cavity, and a first cover plate that is connected to the first cover plate and can close the escape cavity. Two cover plates, a third cover plate extending from the end of the second cover plate to the drinking port, and a cover plug provided at the bottom of the third cover plate and capable of closing the drinking port, wherein The first cover plate is provided with a through hole communicating with the exhaust hole.
The ultrasonic welded leak-proof beverage cup lid according to claim 2, characterized in that: the leakage cavity has at least two cavities which are connected to each other, and the vent is located in one of the cavities At the bottom of the cavities, the through holes are staggered from the exhaust holes, and are located on the first cover plate correspondingly arranged above the other cavities.
The ultrasonic welded leak-proof beverage cup lid according to claim 3, wherein the top of every two adjacent cavities is formed with an overflow channel communicating with each other.
The ultrasonic welded leak-proof beverage cup lid according to claim 3 or 4, wherein the bottom surface of the cavity is inclined from top to bottom, and the exhaust hole is located at the lower part of the bottom surface.
The ultrasonic welded leak-proof beverage cup lid according to claim 2, wherein the avoiding cavity is located between the drinking port and the leaking cavity.
The ultrasonic welded leak-proof beverage cup lid according to claim 2 or 6, characterized in that the avoidance cavity is gradually deepened from top to bottom, and the deeper end is set close to the drinking port.
The ultrasonic welded leak-proof beverage cup lid according to claim 2, wherein the first cover plate and the second cover plate are connected from the middle to form an inverted connection part, wherein the inverted connection part The side edges of the first cover plate and the second cover plate are separated from each other. When the cover is closed, the first cover plate, the second cover plate and the third cover plate The surface of the cover plate is flush, and the first cover plate and the second cover plate are formed with spacing grooves located on opposite sides of the flip connection part; when the cover is opened for the user to drink, the dial Lifting up the third cover plate, the second cover plate is turned over the first cover plate around the turning connection part, and the drinking port and the escape cavity are in an open state.
8. The ultrasonic welded leak-proof beverage cup lid according to claim 8, wherein the spacing groove is in the shape of an arc and is symmetrically arranged on opposite sides of the inverted connecting portion,
The ultrasonic welded leak-proof beverage cup lid according to claim 9, characterized in that: the cover further comprises the first cover plate and the second cover plate corresponding to the spacing groove Among the two connecting sides, one is connected to the clamping module on the side, and the clamping slot is arranged on the other connecting side and matched with the clamping module.
The ultrasonic welded leak-proof beverage cup lid according to claim 8, wherein when the cover is closed, the peripheries of the first cover plate and the second cover plate are attached to the concave On the groove wall of the groove, the outer end of the third cover plate emerges outside the annular protrusion
8. The ultrasonic welded leak-proof beverage cup lid according to claim 8, wherein a first matching portion and a second matching portion are respectively provided on the first cover plate and the third cover plate, When the cover is opened for the user to drink, the first matching portion and the second matching portion are matched, and the first cover plate and the third cover plate are fixedly connected.
The ultrasonic welded leak-proof beverage cup lid according to claim 12, wherein the first matching portion is a clamping post positioned on the first cover plate, and the second matching portion is a The card hole is matched with the card post.
The ultrasonic welded leak-proof beverage cup lid according to claim 2, wherein each part of the lid is integrally formed.
The ultrasonic welded leak-proof beverage cup lid according to claim 2, wherein the top surface of the annular flange is flush, and the width of the top surface of the drinking port is larger than that of other parts.