TWI690464B - Container assembly and its paper cup - Google Patents

Abstract

A container assembly includes a paper cup and a lid. The paper cup includes a paper cup body and a paper straw member, wherein the paper straw member is erected and joined to the inner surface of the annular side wall of the paper cup body, and does not protrude from the cup mouth. The lid includes a lid body, a hollow suction portion and a hollow extension portion. The lid body includes a cover plate with a through hole thereon and a ring wall, the hollow suction portion is extended upward from the cover plate and communicates with the through hole, and the hollow extension portion is extended downward from the cover plate and communicates with the through hole. The lid body is fastened to the cup edge of the paper cup body, the cover plate is adapted to cover the cup mouth and the end of the hollow extension portion is in connection with the paper straw member, so that the hollow extension portion communicates with the paper straw member. This container assembly has the advantage of high convenience and environmental protection.

Description

Container assembly and paper cup

The invention relates to a container assembly, in particular to a container assembly with a paper straw member and a paper cup.

In recent years, with the prevalence of eating and drinking abroad, the use of disposable tableware has prevailed, and the containers used to hold beverages are mostly made of plastic or paper materials. Among them, the paper cup has the advantages of environmental protection and convenient use, so it is widely used by the public Favored.

The common paper beverage cups need to be inserted through the external drinking straws. The drinking straws are convenient and irreplaceable for drinking the beverage cups. At present, the commonly used plastic drinking straws are mostly independent drinking straws separated from the drinking cups. In actual use, it has the inconvenience of being inconvenient to carry or easy to fall. In addition, with the rise of environmental awareness. Gradually moving towards reducing the use of plastic products, straws made of plastic are gradually banned.

The invention provides a container assembly and a paper cup thereof, wherein a paper straw member is built in the paper cup, which has the advantages of high convenience and meeting environmental protection requirements.

The paper cup provided by the present invention includes a paper cup body, a paper straw member and a limiting structure. The paper cup body has a cup body and a cup mouth, the cup body has an annular side wall, and the annular side wall has an inner surface facing the inside of the cup body, the cup mouth is provided at the top of the cup body, and the cup mouth has a surrounding cup edge; paper straw member It is vertically joined to the inner surface of the annular side wall and does not protrude from the cup opening; the limiting structure is provided on a part of the inner surface of the annular side wall, and the distribution direction of the limiting structure corresponds to the surrounding direction of the cup rim.

In an embodiment of the present invention, the paper straw member of the paper cup includes a main surface and two side surfaces, the two side surfaces extend from opposite sides of the main surface, and the ends of the two side surfaces away from the main surface are fixed to the annular side wall The inner surface, and the main surface, the two side surfaces and the inner surface jointly construct a hollow structure.

In an embodiment of the present invention, the paper straw member of the paper cup includes a main surface, a fixing surface and two side surfaces, the main surface and the fixing surface are opposite, the two side surfaces are opposite and adjacent to the main surface and the fixing surface, the main surface, A hollow structure is jointly constructed between the fixing surface and the two side surfaces, and the paper straw member is fixed to the inner surface of the annular side wall through the fixing surface.

In an embodiment of the present invention, the limiting structure of the above paper cup includes a limiting piece, which is circumferentially arranged on a part of the inner surface of the annular side wall along the surrounding direction of the cup edge, and the limiting piece does not completely surround the inner surface by one circle . In an embodiment, the above-mentioned limiting piece is bent by a paper material and has a longitudinal fixing portion and a horizontal resisting portion. The longitudinal fixing portion is attached to the inner surface, and the horizontal resisting portion faces the central axis of the cup body.

In an embodiment of the invention, the above-mentioned limiting structure includes a plurality of limiting pieces, the plurality of limiting pieces are distributed on a part of the inner surface of the annular side wall along the circumferential direction of the cup edge, and the plurality of limiting pieces Located at the same height on the inner surface. In an embodiment, each limiting piece has a longitudinal fixing portion and a horizontal resisting portion. The longitudinal fixing portion is attached to the inner surface, and the horizontal resisting portion faces the central axis of the cup body.

In an embodiment of the invention, at least one of the main surface and the two side surfaces is formed with a groove adjacent to the cup opening.

The container assembly provided by the present invention includes a paper cup and a lid. The paper cup includes a paper cup body and a paper straw member. The paper cup body has a cup body and a cup mouth, the cup body has a ring-shaped side wall, and the ring side wall has an inner surface facing the inside of the cup body, the cup mouth is provided with a top of the cup body, and the cup mouth has a surround At the edge of the cup, the paper straw member is erected on the inner surface of the annular side wall and does not protrude from the cup mouth. The cup cover includes a cup cover body, a hollow suction portion and a hollow extension portion, an opening is formed in the cup cover body, the hollow suction portion is upwardly penetrated in the cup cover body and communicates with the opening, and the hollow extension portion is downwardly penetrated in the cup cover The body communicates with the opening, the cup cover body is engaged with the cup edge of the paper cup body, and is suitable for shielding the cup opening, and the hollow extension is connected with the paper straw member, so that the hollow extension is communicated with the paper straw member.

In an embodiment of the present invention, the above-mentioned cup cover body has a cover plate, a ring wall and a hook portion, the ring wall extends downward from the outer periphery of the cover plate, and the hook portion is rolled outward from the bottom edge of the ring wall The opening is formed on part of the ring wall, the cup cover body is fastened to the cup edge of the paper cup body via the hook portion, and the cover plate is suitable for shielding the cup mouth.

In an embodiment of the present invention, the above-mentioned hollow extension of the cup cover includes opposing first and second surfaces, and opposing third and fourth surfaces, and the third and fourth surfaces are in contact with the first The second surface is adjacent to the second surface, and the second surface faces and is adjacent to the ring wall, wherein the inner wall of at least one of the first surface, the third surface, and the fourth surface is formed with a protrusion, and the hollow extension portion is butted with the paper straw member At this time, the protrusion is engaged with the groove of the paper straw member.

In an embodiment of the invention, the bottom edge of the second surface of the hollow extension of the lid is formed with a notch, and the bottom edge of at least one of the first surface, the third surface and the fourth surface extends Skirt.

The container assembly provided by the present invention includes a paper cup, a plastic film and an auxiliary straw member. The paper cup includes a paper cup body and a paper straw member. The paper cup body has a cup body and a cup mouth, the cup body has a ring-shaped side wall, and the ring side wall has an inner surface facing the inside of the cup body, the cup mouth is provided with a top of the cup body, and the cup mouth has a surround At the edge of the cup, the paper straw member is erected on the inner surface of the annular side wall and does not protrude from the cup mouth. The film is sealed on the mouth of the paper cup body. The auxiliary straw member includes a hollow extension portion and a holding portion. The holding portion is provided on one side of the hollow extension portion. The holding portion is snapped on the edge of the cup. The hollow extension portion passes through the film and is connected to the paper straw member.

In an embodiment of the invention, an opening is preset on the glue film, and the position of the opening corresponds to the paper straw member.

In an embodiment of the present invention, the bottom end of the hollow extension of the auxiliary straw member has a pointed portion for piercing the glue film and butting with the paper straw member.

In an embodiment of the present invention, the holding portion of the auxiliary straw member is an elastic snap piece.

In an embodiment of the invention, the hollow extension of the auxiliary straw member is a hollow form surrounded by four sides.

Since the paper straw member is fixed in the paper cup and cooperates with the design of the hollow extension part and the hollow suction part of the cup cover, the inside of the paper cup body can be made by snapping the cup cover body to the cup edge of the paper cup body The contained beverage can be inhaled by the drinker through the paper straw member, the hollow extension and the hollow mouth. Or, the auxiliary straw member is fastened to the edge of the paper cup body sealed by the film, so that the hollow extension of the auxiliary straw member can be connected to the paper straw member of the paper cup to communicate with each other, so that the paper cup body contains the Drinks can be inhaled by the drinker through the paper straw member and the hollow extension. Since the paper straw member is attached to the paper cup body, it is convenient to use and meets environmental protection requirements.

To make the above and other objects, features, and advantages of the present invention more comprehensible, embodiments are described below in conjunction with the accompanying drawings, which are described in detail below.

1 is a schematic perspective view of a paper cup according to an embodiment of the present invention. As shown in FIG. 1, the paper cup 10 includes a paper cup body 12, a paper straw member 14 and a limiting structure 16. The paper cup body 12 is made of paper, for example, and has a cup body 18和杯口22. The cup body 18 has an annular side wall 24. The annular side wall 24 has an inner surface 241 facing the inside of the cup body 18. The cup mouth 22 is disposed at the top of the cup body 18, and the cup mouth 22 has a surrounding cup edge 221. In the example, the cup edge 221 is formed by curling the annular side wall 18 outward. The paper straw member 14 is made of, for example, a paper material, and the paper straw member 14 is uprightly joined to the inner surface 241 of the annular side wall 24 and does not protrude from the cup mouth 22. The limiting structure 16 is disposed on the inner surface 241 of the annular side wall 24, and the distribution direction of the limiting structure 16 corresponds to the surrounding direction of the cup edge 221.

Wherein, the paper straw member 14 is slightly shaped in top view, and includes a main surface 141 and two side surfaces 142 and 142′. The two side surfaces 142 and 142′ extend from opposite sides of the main surface 141 respectively. The end away from the main surface 141 is fixed to the inner surface 241 of the annular side wall 24, and a hollow structure 26 is jointly constructed between the main surface 141, the two side surfaces 142, 142' and the inner surface 241. In one embodiment, One end of the two side surfaces 142, 142' is fixed to the inner surface 241 by, for example, gluing or ultrasonic welding; the bottom end of the paper straw member 14 may or may not touch the bottom of the cup body 18.

Following the above description, the limiting structure 16 is made of paper, for example. As shown in FIG. 1, the limiting structure 16 includes a limiting piece 28 that is circumferentially disposed on the inner surface 241 of the annular side wall 24 along the circumferential direction of the cup edge 221 , And the limiting piece 28 does not completely surround the inner surface 241 one circle. In one embodiment, the limiting piece 28 surrounds 1/2 or 3/4 of the inner surface 241, wherein the limiting piece 28 does not surround the inner The surface 241 covers the installation position of the paper straw member 14. The limiting piece 28 is formed by bending a piece of paper. The side section of the limiting piece 28 is slightly L-shaped (as shown in FIG. 1) or inverted L-shaped, and has a longitudinal fixing portion 281 and a horizontal resisting portion 282. The longitudinal fixing portion 281 is attached to the inner surface 241 around the annular side wall 24, and the horizontal resisting portion 282 faces the central axis of the cup body 18 (not shown). In one embodiment, as shown in FIG. 2, a plurality of notches 283 may be formed in the longitudinal fixing portion 281 of the limiting piece 28 to make the longitudinal fixing portion 281 slightly serrated so as to be easily attached to the annular side wall 24 Surface 241. The limiting structure 16 is not limited to include a single limiting piece 28 around the inner surface 241 of the annular side wall 24. In an embodiment not shown, the limiting structure may include a plurality of limiting pieces with a shorter width. The limiting pieces are distributed on a part of the inner surface of the annular side wall along the circumferential direction of the cup edge, and the limiting pieces are located at the same height of the inner surface, and the distribution of the plurality of limiting pieces does not completely cover the inner surface one circle , Still retain the installation position of the paper straw member.

Continuing with the above description, in addition to the above-mentioned structure having substantially three sides and a top-shaped cross-section, the paper straw member 14 of the paper cup 10 can be seen in FIG. 2. In one embodiment, the paper straw member 14A of the paper cup 10A is surrounded by four sides. The hollow shape of the top view is mouth-shaped. The paper straw member 14A includes a main surface 141, a fixing surface 143 and two side surfaces 142 and 142'. The main surface 141 and the fixing surface 143 are opposite, and the two side surfaces 142 and 142' are opposite and Adjacent to the main surface 141 and the fixing surface 143, a hollow structure 26A is constructed between the main surface 141, the fixing surface 143 and the two side surfaces 142, 142', and the paper straw member 14A is combined with the inner surface 241 through the fixing surface 143 The inner surface 241 of the annular side wall 24 is erected and fixed. In one embodiment, the fixed surface 143 is bonded to the inner surface 241 by, for example, gluing or ultrasonic welding.

Whether the paper straw member 14/14A is of three-sided or four-sided configuration, in one embodiment, a groove 30 is formed on the main surface 141 and the two side surfaces 142, 142' adjacent to the cup opening 22, and the groove 30 is slightly It is grooved and adjacent to the top edges of the main surface 141 and the two side surfaces 142, 142'.

In the paper cup of the embodiment of the present invention, due to the design of the horizontal resisting portion 282 of the limiting structure 16, when a plurality of paper cups are stacked, the upper paper cup can be surely placed on the lower paper cup, so for the storage of a plurality of paper cups The arrangement of multiple paper cups will enable the storage space to achieve the maximum storage capacity, which can reduce storage and transportation costs.

FIG. 3 is an exploded perspective view of a container assembly according to an embodiment of the present invention. As shown in FIG. 3, the container assembly 40 includes a paper cup 10 and a lid 42. Please also refer to FIG. 1, the paper cup 10 includes a paper cup body 12 and a paper straw member 14. The paper cup body 12 includes a cup body 18 (marked in FIG. 1) and a cup mouth 22. The cup body 18 has an annular side wall 24 and a paper straw member 14 is vertically joined to the inner surface 241 of the annular side wall 24 and does not protrude from the cup opening 22. The detailed structures of the paper cup body 12 and the paper straw member 14 have been described above, and will not be repeated here. 4 is a schematic structural view of a lid of a container assembly according to an embodiment of the present invention. Please also refer to FIGS. 3 and 4. The lid 42 includes a lid body 44, a hollow suction port 46 and a hollow extension 48. The lid body 44上开孔441. The lid body 44 has a cover plate 50, a ring wall 52, and a hook portion 53. The ring wall 52 extends downward from the outer periphery of the cover plate 50. In an embodiment, the side cross-section of the ring wall 52 is slightly shaped or The shape has a first inclined surface 521 and a second inclined surface 522, wherein the opening 441 is formed on the second inclined surface 522. The hook portion 53 is formed by rolling the bottom edge of the second inclined surface 522 outward. In an embodiment, the hook portion 53 is bent outward from the bottom edge of the second inclined surface 522 and upward to form a curled edge. The hollow suction port portion 46 extends upward from the opening 441 and communicates with the opening 441. The hollow extension 48 extends downward from the opening 441 and communicates with the opening 441, that is, the hollow suction port 46, the opening 441, and the hollow extension 48 communicate with each other.

In one embodiment, the hollow suction port 46 and the hollow extension 48 are hollow forms surrounded by four sides. In one embodiment, the hollow extension 48 includes a first surface 481 and a second surface 482 opposite, and a third surface opposite 483 and the fourth surface 484, and the third surface 483 and the fourth surface 484 are adjacent to the first surface 481 and the second surface 482, wherein the second surface 482 faces and is adjacent to the ring wall 52, and in the first portion of the hollow extension 48 The inner walls of the one surface 481, the third surface 483, and the fourth surface 484 are each formed with a protrusion 54. In an embodiment, the protrusion 54 is slightly elongated, and the shape and length of the protrusion 54 generally correspond to the paper cup The groove 30 on the paper straw member 14 of 10 (shown in FIG. 1). In another embodiment, a notch 56 is formed on the bottom edge of the second surface 482, and a skirt portion 58 extends on the bottom edges of the first surface 481, the third surface 483, and the fourth surface 484.

5 is a schematic cross-sectional view of a container assembly according to an embodiment of the present invention. As shown in FIG. 5, the hook portion 53 of the cup cover body 44 is engaged with the cup edge 221 of the paper cup body 12, and the cover plate 50 is suitable for shielding the cup opening 22 , And the end of the hollow extension 48 is placed inside the cup body 18 and docks with the paper straw member 14 so that the hollow extension 48 communicates with the paper straw member 14. Wherein, guided by the skirt 58, the hollow extension 48 can be smoothly docked with the paper straw member 14, and at the same time, the protrusion 54 will be engaged with the groove 30 of the paper straw member 14, so that the hollow extension 48 and the paper straw member 14 can be closely combined.

6 is a perspective exploded view of a container assembly according to another embodiment of the present invention, and FIG. 7 is a schematic sectional view of a container assembly according to another embodiment of the present invention. As shown in FIGS. 6 and 7, the container assembly 40A includes a paper cup 10, a film 60 and an auxiliary straw member 62. Please also refer to FIG. 1, the paper cup 10 includes a paper cup body 12 and a paper straw member 14. The paper cup body 12 includes a cup body 18 (marked in FIG. 1) and a cup mouth 22. The cup body 18 has an annular side wall 24 and a paper straw member 14 is vertically joined to the inner surface 241 of the annular side wall 24 and does not protrude from the cup opening 22. The detailed structures of the paper cup body 12 and the paper straw member 14 have been described above, and will not be repeated here. The adhesive film 60 is sealed on the cup opening 22 of the paper cup body 12. The adhesive film 60 is, for example, glued to the cup edge 221 and seals the cup opening 22 using a sealing machine. In one embodiment, the adhesive film 60 is preset with an opening 601 The position of the opening 601 corresponds to the position of the paper straw member 14 in the paper cup body 12, and the opening 601 can be temporarily covered by a viscous adhesive material (not shown). The auxiliary straw member 62 includes a hollow extending portion 64 and a holding portion 66. In an embodiment, the hollow extending portion 64 is a hollow shape surrounded by four sides. The holding portion 66 is, for example, an elastic snap tab, and the holding portion 66 is provided in the hollow extension Side of the part 64.

Following the above description, as shown in FIG. 7, when pre-absorbing the beverage inside the paper cup body 12 (not shown in the figure), the adhesive material can be torn off first, and then the holding portion 66 can be snapped to the cup edge 221 and hollow The lower half of the extension 64 penetrates the film 60 through the opening 601 to interface with the paper straw member 14, wherein the retaining portion 66 is snapped to the cup rim 221, and the hollow extension 64 can be tightly engaged with and communicate with the paper straw member 14 , And the upper half of the hollow extension 64 is used as the suction port when drinking beverages.

Furthermore, in an embodiment not shown, the adhesive film may not have an opening design, and a tip is provided at the bottom end of the hollow extension, when pre-sucking the beverage inside the paper cup body, the holding portion can be directly caught It is buckled on the edge of the cup, and the hollow extension part pierces the adhesive film with a tip to butt and communicate with the paper tube member.

In the container assembly of the embodiment of the present invention, the cover body is fastened to the cup rim of the paper cup body, so that the hollow extension part communicated with the hollow suction port part can be connected to the paper straw member to communicate with the paper cup body, thereby making the paper cup body inside The beverage can be inhaled by the drinker through the paper straw member, the hollow extension and the hollow mouth. Or, the auxiliary straw member is fastened to the cup edge of the paper cup body, so that the hollow extension as the suction port section can be docked with the paper straw member, so that the beverage inside the paper cup body can extend through the paper straw member and the hollow Inhaled by the drinker. Since the paper straw member is attached to the paper cup body, there is no need to carry or take a separate plastic straw, and there is no risk of the straw falling, so the convenience of use is high, and the use of the paper straw member will help Environmental protection needs.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined in the appended patent application.

10, 10A: paper cup 12: paper cup body 14, 14A: Paper straw member 141: Main face 142, 142’: side 143: fixed surface 16: Limit structure 18: Cup body 22: Cup mouth 221: Cup edge 24: annular side wall 241: inner surface 26, 26A: Hollow structure 28: limit film 281: Longitudinal fixing part 282: Horizontal stop 283: Notch 30: groove 40, 40A: container assembly 42: Cup lid 44: Cup lid body 441: opening 46: Hollow suction mouth 48: Hollow extension 481: The first side 482: Second side 483: third side 484: Fourth side 50: cover 52: ring wall 521: The first slope 522: Second slope 53: Card hook 54: protrusion 56: Notch 58: skirt 60: film 601: opening 62: auxiliary straw component 64: Hollow extension 66: Holding Department

FIG. 1 is a schematic perspective view of a paper cup according to an embodiment of the invention. FIG. 2 is a schematic perspective view of a paper cup according to another embodiment of the invention. 3 is an exploded perspective view of a container assembly according to an embodiment of the invention. FIG. 4 is a schematic structural view of a lid of a container assembly according to an embodiment of the invention. 5 is a schematic cross-sectional view of a container assembly according to an embodiment of the invention. 6 is a perspective exploded view of a container assembly according to another embodiment of the invention. 7 is a schematic cross-sectional view of a container assembly according to yet another embodiment of the invention.

10: paper cup

12: paper cup body

14: Paper straw member

22: Cup mouth

221: Cup edge

24: annular side wall

241: inner surface

40: Container component

42: Cup lid

44: Cup lid body

441: opening

46: Hollow suction mouth

48: Hollow extension

50: cover

52: ring wall

521: The first slope

522: Second slope

53: Card hook

Claims (22)

A paper cup includes: a paper cup body having a cup body and a cup mouth, the cup body has an annular side wall, and the annular side wall has an inner surface facing the inside of the cup body, the cup mouth is disposed at the top of the cup body , And the cup mouth has a surrounding cup edge; a paper straw member, which is erected on the inner surface of the annular side wall and does not protrude from the cup mouth; and a limiting structure, which is provided on the annular side wall Part of the inner surface, and the distribution direction of the limiting structure corresponds to the surrounding direction of the cup rim. The paper cup according to claim 1, wherein the paper straw member includes a main surface and two side surfaces, the two side surfaces respectively extend from opposite sides of the main surface, and the ends of the two side surfaces away from the main surface are fixed to the The inner surface of the annular side wall, and the main surface, the two side surfaces and the inner surface jointly construct a hollow structure. The paper cup according to claim 1, wherein the paper straw member includes a main surface, a fixing surface and two side surfaces, the main surface and the fixing surface are opposite, the two side surfaces are opposite and adjacent to the main surface and the fixing surface On the surface, the main surface, the fixing surface and the two side surfaces jointly construct a hollow structure, and the paper straw member is fixed on the inner surface of the annular side wall through the fixing surface. The paper cup according to claim 2 or 3, wherein at least one of the main surface and the two side surfaces is formed with a groove adjacent to the cup opening. The paper cup according to claim 1, wherein the limiting structure includes a limiting piece that is circumferentially provided on a portion of the inner surface of the annular side wall along the surrounding direction of the cup edge, and the limiting piece is not completely surrounded The inner surface is a circle. The paper cup according to claim 5, the limit piece is bent by a paper material and has a longitudinal fixing portion and a horizontal resisting portion, the longitudinal fixing portion is attached to the inner surface, and the horizontal resisting portion faces the cup The central axis of the body. The paper cup according to claim 1, wherein the limiting structure includes a plurality of limiting pieces, the limiting pieces are distributed on a portion of the inner surface of the annular side wall along the circumferential direction of the cup edge, and the The limiting pieces are located at the same height on the inner surface. The paper cup according to claim 7, wherein each of the limiting pieces has a longitudinal fixing portion and a horizontal resisting portion, the longitudinal fixing portion is attached to the inner surface, and the horizontal resisting portion faces the center of the cup body Axis. A container assembly includes: a paper cup including a paper cup body and a paper straw member, the paper cup body has a cup body and a cup opening, the cup body has an annular side wall, and the annular side wall has an inner surface facing the cup Inside the body, the cup opening is provided at the top of the cup body, and the cup opening has a surrounding cup rim, and the paper straw member is vertically joined to the inner surface of the annular side wall and does not protrude from the cup opening; and A cup cover includes a cup cover body, a hollow suction portion and a hollow extension portion, an opening is formed in the cup cover body, the hollow suction portion penetrates upwardly through the cup cover body and communicates with the opening, the hollow The extending portion penetrates down the cup cover body and communicates with the opening, the cup cover body is buckled to the cup rim of the paper cup body, suitable for shielding the cup mouth, and the hollow extending portion and the paper straw member Butt, and connect the hollow extension to the paper straw member. The container assembly according to claim 9, wherein the cup lid body has a cover plate, a ring wall and a hook portion, the ring wall extends downward from the outer periphery of the cover plate, and the hook portion is formed by the ring The bottom edge of the wall is rolled outward, the opening is formed in part of the ring wall, the cup lid body is engaged with the cup edge of the paper cup body via the hook portion, the cover plate is suitable for shielding the cup mouth . The container assembly according to claim 9, wherein the paper straw member includes a main surface and two side surfaces, the two side surfaces respectively extend from opposite sides of the main surface, and the ends of the two side surfaces away from the main surface are fixed to The inner surface of the annular side wall, and the main surface, the two side surfaces and the inner surface jointly construct a hollow structure. The container assembly according to claim 9, wherein the paper straw member includes a main surface, a fixing surface and two side surfaces, the main surface and the fixing surface are opposite, the two side surfaces are opposite and adjacent to the main surface and the A fixing surface, the main surface, the fixing surface and the two side surfaces jointly construct a hollow structure, and the paper straw member is fixed to the inner surface of the annular side wall through the fixing surface. The container assembly according to claim 11 or 12, wherein at least one of the main surface and the two side surfaces of the paper straw member is formed with a groove adjacent to the cup opening, and the hollow extension of the cup cover includes A first surface and a second surface opposite to each other, and a third surface and a fourth surface opposite to each other, and the third surface and the fourth surface are adjacent to the first surface and the second surface, the second A ring wall facing and adjacent to the cup lid body, wherein an inner wall of at least one of the first surface, the third surface and the fourth surface is formed with a protrusion, and when the hollow extension and the paper straw member When docking, the protrusion is engaged with the groove of the paper straw member. The container assembly according to claim 13, wherein a bottom edge of the second surface of the hollow extension is formed with a notch, and a bottom edge of at least one of the first surface, the third surface and the fourth surface Extend a skirt. The container assembly according to claim 9, wherein the paper cup further includes a limiting structure disposed on a portion of the inner surface of the annular side wall, and the distribution direction of the limiting structure corresponds to the surrounding direction of the cup rim. The container assembly according to claim 15, wherein the limiting structure includes a limiting piece that is circumferentially provided on a portion of the inner surface of the annular side wall along the circumferential direction of the cup rim, and the limiting piece is not completely A circle around the inner surface. The container assembly according to claim 16, the limit piece is bent by a paper material and has a longitudinal fixing portion and a horizontal resisting portion, the longitudinal fixing portion is attached to the inner surface, and the horizontal resisting portion faces the The central axis of the cup body. The container assembly according to claim 16, wherein the limiting structure comprises a plurality of limiting pieces, the limiting pieces are distributed on a portion of the inner surface of the annular sidewall along the circumferential direction of the cup edge, and The limiting pieces are located at the same height on the inner surface. The container assembly according to claim 18, wherein each of the limiting pieces has a longitudinal fixing portion and a horizontal resisting portion, the longitudinal fixing portion is attached to the inner surface, and the horizontal resisting portion faces the cup body Central axis. A container assembly includes: a paper cup including a paper cup body and a paper straw member, the paper cup body has a cup body and a cup opening, the cup body has an annular side wall, and the annular side wall has an inner surface facing the cup Inside the body, the cup mouth is provided with the top end of the cup body, and the cup mouth has a surrounding cup rim, the paper straw member is uprightly joined to the inner surface of the annular side wall, and does not protrude from the cup mouth; a glue A film, sealed at the mouth of the paper cup body; and an auxiliary straw member, including a hollow extension and a holding part, the holding part is provided on one side of the hollow extension, the holding part is snapped on the cup And the hollow extending portion passes through the adhesive film and butts with the paper straw member. The container assembly according to claim 20, wherein the holding portion is an elastic snap piece. The container assembly according to claim 20, wherein the hollow extension is a hollow shape surrounded by four sides.

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