CPLA biodegradable teacup and production method thereof

By setting a reinforced concave edge and inner arc design on the CPLA biodegradable tea cup, combined with hot press forming and cooling devices, the deformation and overflow problems of tea cups are solved, handhold stability and production efficiency are improved, and cost is reduced.

CN119184483APending Publication Date: 2024-12-27JINJIANG HONGHAI PLASTIC IND CO LTD
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Patent Information

Application Number
CN202411390914.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-08
Publication Date
2024-12-27

AI Technical Summary

Technical Problem

Existing biodegradable tea cups are prone to deformation when used, which increases the difficulty of holding, and there is a risk of tea overflow and scalding. Increasing the wall thickness of the cup to solve these problems will increase the cost of material use.

Method used

Design a CPLA biodegradable tea cup. By setting reinforced concave edges on the cup body, adopting an inner curved cross-section and anti-slip design, combining hot pressing and cooling devices, it improves the strength of the cup body and hold stability, and avoids adding cups. Body thickness.

Benefits of technology

It effectively improves the hand strength and anti-slip performance of the tea cup, reduces the cost of material use, and at the same time, it realizes rapid cooling and automatic mold release through the cooling device, improving production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a CPLA biodegradable teacup and a production method thereof, and belongs to the technical field of biodegradable teacup, the CPLA biodegradable teacup comprises a teacup, the teacup is formed by combining a cup body and a cup bottom, a cup edge is arranged at the upper end of the cup body, a reinforcing concave edge is formed on the periphery of the surface of the cup body in a hot pressing mode, the teacup is made of a CPLA biodegradable material, and the cup bottom is made of a CPLA biodegradable material. The reinforcing concave edge is arranged on the cup body, so that the strength of a hand holding area of the cup body is increased, the cup body cannot deform, the cup body is not prone to slipping when held by a hand due to the fact that the reinforcing concave edge adopts the concave anti-slip design, the strength of the cup body can be improved without increasing the thickness due to the design, and therefore the material cost is effectively controlled.
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Description

Technical Field

[0001] The invention relates to a CPLA biodegradable tea cup and a production method thereof, belonging to the technical field of biodegradable tea cups. Background Art

[0002] A teacup is a container for tea. The water comes from the teapot and is poured into the teacup, which is then given to the guests to taste.

[0003] Biodegradable tea cups are currently more commonly used disposable tea cups, and the cup body of a disposable tea cup is generally in a cone shape. When in use, the cup is easily deformed when the user holds it in his hand after filling it with tea, which increases the difficulty of the user's holding the cup and also has the risk of scalding due to tea overflow. The existing solution is to increase the wall thickness of the cup body so that the cup body is not easily deformed under force, but such a design will increase the material cost of the tea cup. In view of the above shortcomings, the present invention proposes a CPLA biodegradable tea cup and a production method thereof. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a CPLA biodegradable teacup and a production method thereof to solve the existing problems.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a CPLA biodegradable tea cup, comprising a tea cup, the tea cup is composed of a cup body and a cup bottom, a cup rim is arranged at the upper end of the cup body, a reinforced concave rim is formed by hot pressing around the surface of the cup body, and the tea cup is made of CPLA biodegradable material.

[0006] As a further improvement, the cross section of the reinforced concave edge is in an inner arc shape, the inner concave depth of the reinforced concave edge is 0.8-1mm, and the edge diameter of the reinforced concave edge is 1.8-2.2mm.

[0007] A method for producing flow-guiding and stable hollow cement bricks, further comprising a pressing edge device for hot pressing and forming the reinforced concave edge, the pressing edge device comprising a frame, a teacup sleeve mold is transversely arranged on the right side of the frame, and a pressing edge assembly is arranged on the periphery of the teacup sleeve mold, a cooling mechanism and a suction cup group are respectively arranged on the left side of the frame, the other end of the cooling mechanism is extended and fixed to the middle part of the teacup sleeve mold cavity through an air intake hose, and the other end of the suction cup group is extended and fixed to the right side surface of the teacup sleeve mold through an air pipe; The teacup mold is composed of a top mold, a pressure edge mold and a bottom mold, which are assembled from left to right. The pressure edge assembly includes a bracket, and a push plate group is arranged on the top surface of the bracket, and a plurality of clamping assemblies are arranged in a circular array in the middle cavity of the push plate group, and the number of each clamping assembly is four, and the outer ends of the four clamping assemblies are movably abutted against the inner side surface of the push plate group in turn, and a motor is engaged on one side of the outer end of the push plate group; When the motor drives the push plate group to rotate clockwise, the four mold clamping components are pushed to close the mold and press the surface of the edge sleeve mold to form the reinforced concave edge; When the motor drives the push plate group to rotate counterclockwise, the four mold clamping components are pushed to open the mold and press against the surface of the sleeve mold to separate; The cooling mechanism comprises a cold air generator, and the air outlet of the cold air generator is connected to a blowing piece through an air inlet hose, and a sealing air port pad is arranged on the outer side sealing sleeve of the blowing piece, and the outer side of the sealing air port pad is sealed against the inner ring surface of the pressure sleeve mold.

[0008] A further improvement is that a hose passage is provided through the middle of the top sleeve mold; A sealing inner groove is provided in the middle of the inner ring surface of the pressing edge sleeve mold, a forming groove for reinforcing the hot pressing forming of the concave edge is provided in the middle of the outer ring surface of the pressing edge sleeve mold, and a plurality of first air outlet holes are provided between the forming groove and the sealing inner groove in an annular array; A suction cup seat is arranged on the bottom surface of the bottom sleeve mold cavity, and a suction cup opening is opened through the middle of the bottom surface of the bottom sleeve mold cavity.

[0009] A further improvement is that the push plate group includes a push plate body, which is in a circular ring shape, and a rotating plate is arranged on the bottom surface of the push plate body, and a plurality of push blocks are arranged in a circular array on the top surface of the push plate body, each push block is four in number, and a rack is arranged on one side of the outer end of the push plate body, and the rack is in an arc shape, and a driving gear meshing with the rack is arranged on the motor.

[0010] As a further improvement, an inner side surface of each push block is provided with an arc-shaped slope surface which is higher on the left and lower on the right, and a slideway is provided along the arc-shaped slope surface in the middle.

[0011] A further improvement is that each of the mold clamping components includes a telescopic slide, and a slide rod is provided in the middle of the telescopic slide, and a spring is provided on the outer side of the slide rod body, and a push pulley that is against the slideway is provided at the outer end of the slide rod, and a molded part seat is provided at the inner end of the slide rod, and a molded part body is provided on the other side of the molded part seat, and a heating plate is provided at one end of the inner side of the molded part body, the molded part body is in an arc shape and is made of copper, and the cross section of the slide rod is hexagonal; When the four molding body are molded together, a circular ring matching the molding groove is formed.

[0012] As a further improvement, the blowing member comprises a circular tube whose cross section is square, an inner ring of the circular tube is connected to an air inlet pipe head, and a plurality of second air outlet holes are equidistantly provided on the outer ring surface of the circular tube in a circular array.

[0013] A further improvement is that the sealing air outlet gasket includes a circular gasket, and an arc-shaped abutment surface is provided on the outer side of the circular gasket, and a plurality of third air outlet holes are equidistantly provided on the circular gasket in a circular array, and the sealing air outlet gasket is made of rubber, and each of the first air outlet holes, each of the second air outlet holes, and each of the third air outlet holes are connected one by one.

[0014] A further improvement is that the cold air generator is a prior art and the structure is not described in detail here.

[0015] A further improvement is that the suction cup assembly is composed of a two-way vacuum pump, an air pipe, and a suction cup nozzle.

[0016] The beneficial effects of the present invention are: The present invention provides a CPLA biodegradable tea cup and a production method thereof. A reinforced concave edge is arranged on the cup body to increase the strength of the hand-holding area of ​​the cup body so that the cup body will not be deformed. In addition, the reinforced concave edge adopts an inward concave anti-skid design so that the cup body is not easy to slip when held. The above design can improve the strength of the cup body without increasing the thickness, thereby effectively controlling the material cost.

[0017] In addition, the present invention also provides a pressing edge device for producing a reinforced concave edge, which is composed of a frame, a teacup sleeve mold, a pressing edge assembly, a cooling mechanism, and a suction cup assembly. The teacup sleeve mold and the pressing edge assembly cooperate to press out the reinforced concave edge in one go, and the cooling mechanism evenly blows cold air from the inner side of the teacup sleeve mold toward the inner side of the reinforced concave edge after the reinforced concave edge is hot pressed to achieve rapid preliminary cooling and shaping. The reinforced concave edge will not deform and rebound due to extrusion deformation during the subsequent demolding process, and direct contact cooling with cold air will be faster and more efficient than coolant water circulation conduction cooling.

[0018] The suction cup group assists the teacup mold to absorb and fix the teacup, which can effectively prevent the teacup from slipping when the teacup mold and the edge pressing component cooperate in the hot pressing operation, effectively improving the quality. The suction cup group adopts two-way ventilation to convert from suction to blowing, and can blow and remove the teacup with reinforced concave edge, realizing automatic demoulding of the device, which is fast and efficient, does not require manual demoulding, and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the teacup structure of the present invention; Figure 2 This is a schematic diagram of the structure of the edge pressing device of the present invention; Figure 3 This is a schematic diagram of the teacup mold structure of the present invention; Figure 4 This is a schematic diagram of the structure of the pressure edge assembly of the present invention; Figure 5It is a schematic diagram of the structure of the push plate group of the present invention; Figure 6 It is a schematic diagram of the structure of the mold clamping assembly of the present invention; Figure 7 It is a schematic diagram of the cooling mechanism structure of the present invention. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] See also Figure 1-Figure 7 The present invention provides a CPLA biodegradable tea cup and a production method thereof: comprising a tea cup 1, the tea cup 1 is composed of a cup body 11 and a cup bottom 12, the upper end of the cup body 11 is provided with a cup edge 111, the surface of the cup body 11 is hot-pressed to form a reinforced concave edge 112, and the tea cup 1 is made of CPLA biodegradable material.

[0022] The cross section of the reinforced concave edge 112 is in an inner arc shape, the inner concave depth of the reinforced concave edge 112 is 0.8-1mm, and the edge diameter of the reinforced concave edge 112 is 1.8-2.2mm.

[0023] A method for producing a CPLA biodegradable tea cup also includes a pressing edge device 2 for hot pressing and forming the reinforced concave edge 112, the pressing edge device 2 includes a frame 21, and a tea cup mold 22 is horizontally arranged on the right side of the frame 21, and a pressing edge assembly 23 is arranged on the periphery of the tea cup mold 22, a cooling mechanism 24 and a suction cup group 25 are respectively arranged on the left side of the frame 21, the other end of the cooling mechanism 24 is extended and fixed to the middle part of the cavity of the tea cup mold 22 through an air intake hose, and the other end of the suction cup group 25 is extended and fixed to the right side surface of the tea cup mold 22 through an air pipe, the tea cup mold 22 is composed of a top mold 221, a pressing edge mold 222 and a bottom mold 223 that are fitted from left to right, the pressing edge assembly 23 includes a bracket 231, and a push plate group 232 is arranged on the top surface of the bracket 231, and a plurality of clamping assemblies 23 are arranged in a circular array in the middle cavity of the push plate group 232. 3, and the number of each clamping assembly 233 is four, and the outer ends of the four clamping assemblies 233 are movably abutted against the inner side surface of the push plate group 232 in turn, and a motor 234 is engaged on one side of the outer end of the push plate group 232. When the motor 234 drives the push plate group 232 to rotate clockwise, the four clamping assemblies 233 are pushed to clamp the mold and abut against the surface of the pressure edge sleeve mold 222 for hot pressing to obtain the reinforced concave edge 112. When the motor 234 drives the push plate group 232 to rotate counterclockwise, the four clamping assemblies 233 are pushed to open the mold and abut against the surface of the pressure edge sleeve mold 222 to disengage. The cooling mechanism 24 includes a cold air generator 241, and the air outlet end of the cold air generator 241 is connected to a blowing piece 242 through an air inlet hose, and a sealing air outlet pad 243 is provided on the outer side sealing sleeve of the blowing piece 242, and the outer side surface of the sealing air outlet pad 243 is sealed against the inner ring surface of the pressure edge sleeve mold 222.

[0024] A hose channel 2211 is provided through the middle of the top sleeve mold 221, a sealed inner groove 2221 is provided in the middle of the inner ring surface of the pressure edge sleeve mold 222, a molding groove 2222 for hot pressing of the reinforced concave edge 112 is provided in the middle of the outer ring surface of the pressure edge sleeve mold 222, a plurality of first air outlet holes 2223 are provided through the molding groove 2222 and the sealed inner groove 2221 in a circular array, a suction cup sleeve seat 2231 is provided on the bottom surface of the cavity of the bottom sleeve mold 223, and a suction cup opening 2232 is provided through the middle of the bottom surface of the cavity of the bottom sleeve mold 223.

[0025] The push plate group 232 includes a push plate body 2321, which is in a ring shape, and a rotating plate 2322 is arranged on the bottom surface of the push plate body 2321, and a plurality of push blocks 2323 are arranged in a ring array on the top surface of the push plate body 2321, and the number of each push block 2323 is four, and a rack 2324 is arranged on one side of the outer end of the push plate body 2321, and the rack 2324 is in an arc shape, and a driving gear meshing with the rack 2324 is arranged on the motor 234.

[0026] An arc-shaped slope 23231 which is higher on the left and lower on the right is formed on the inner side surface of each push block 2323 , and a slideway 23232 is formed along the arc-shaped surface in the middle of the arc-shaped slope 23231 .

[0027] Each of the mold closing components 233 includes a telescopic slide 2331, and a slide rod 2332 is movably sleeved in the middle of the telescopic slide 2331, and a spring 2333 is sleeved on the outer side of the slide rod 2332. A pushing pulley 2334 that movably resists the slideway 23232 is provided at the outer end of the slide rod 2332. A molding seat 2335 is provided at the inner end of the slide rod 2332, and a molding body 2336 is provided on the other side of the molding seat 2335, and a heating plate 2337 is provided at one end of the inner side of the molding body 2336. The molding body 2336 is arc-shaped and made of copper. The cross-section of the slide rod 2332 is hexagonal. When the four molding bodies 2336 are molded together, a circular ring that matches the molding groove 2222 is formed.

[0028] The blowing member 242 includes a circular tube 2421, and the cross section of the circular tube 2421 is square. The inner circle of the circular tube 2421 is connected to an air inlet pipe head 2422, and the outer circle surface of the circular tube 2421 is provided with a plurality of second air outlet holes 2423 at equal intervals in a circular array.

[0029] The sealing air outlet gasket 243 includes a circular gasket 2431, and an arc-shaped abutment surface 2432 is provided on the outer side of the circular gasket 2431, and a plurality of third air outlet holes 2433 are equidistantly provided on the circular gasket 2431 in a circular array. The sealing air outlet gasket 243 is made of rubber material, and each of the first air outlet holes 2223, each of the second air outlet holes 2423, and each of the third air outlet holes 2433 are connected one by one.

[0030] Working principle: The production method is as follows: the teacup 1 is grabbed by an external feeder, displaced horizontally to the left, and put on the teacup mold 22, and fixed by the suction cup mouth on the suction cup group 25. Then the motor 234 of the pressure edge component 23 drives the push plate group 232 to rotate clockwise, pushing the four mold clamping components 233 to clamp the mold and abut against the surface of the pressure edge mold 222, so that the circular ring formed by the four molded component bodies 2336 after the mold is clamped extrudes the cup body 11 into the molding groove 2222. When the mold is clamped, the push pulley 2334 is pushed from the low position in the slideway 23232 on the arc slope 23231 to the high position. At this time, the corresponding springs 2333 on each molded component body 2336 will be in a tightened state, providing a reset outward pulling force for the subsequent mold opening.

[0031] In addition, due to the heating of the heating plates 2337 on the four molding body bodies 2336, the circular ring has a hot pressing and molding effect on the surface of the cup body 11, so that the cup body 11 is deformed according to the shape of the molding groove 2222 to form a reinforcing concave edge 112. However, at this time, the reinforcing concave edge 112 has not yet solidified and needs to be blown by the cold air generator 241 on the cooling mechanism 24. The cold air enters the circular tube 2421 through the air intake hose and is connected through the one-to-one correspondence between each first air outlet hole 2223, each second air outlet hole 2423, and each third air outlet hole 2433, according to the molding groove 2 The annular groove 222 blows cold air on the inner side of the reinforced concave edge 112 for preliminary cooling and shaping. After the cooling mechanism 24 cools for 2-3 seconds, the motor 234 drives the push plate group 232 to rotate counterclockwise, pushing the four mold clamping components 233 to open the mold and disengage from the surface of the pressure edge mold 222. When opening the mold, the push pulley 2334 will slide from the high position to the low position in the slideway 23232 on the arc slope 23231, and the spring 2333 will follow the rebound and pull the mold body 2336 outward through the slide rod 2332 and the mold seat 2335 to realize automatic mold opening.

[0032] Then the cooling mechanism 24 continues the cooling operation, and at this time the bidirectional vacuum pump on the suction cup group 25 is converted into blowing, and air is blown to the right end of the cavity of the teacup 1 through the suction cup mouth, so that the teacup 1 has a rightward pushing force, and the reinforced concave edge 112 is deformed to the right to extrude the forming groove 2222, thereby realizing automatic demolding. It should be noted that the deformation of the reinforced concave edge 112 during demolding will automatically recover after demolding.

[0033] In addition, the combination of the teacup mold 22 and the pressing edge assembly 23 on the pressing edge device 2 of the present invention can be set in multiple groups, and only one group of cooling mechanism 24 and suction cup group 25 is required to be connected to multiple groups of teacup molds 22, so as to realize the synchronous hot pressing forming of the reinforced concave edges 112 on multiple teacups 1.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A CPLA biodegradable teacup, comprising a teacup (1), wherein the teacup (1) is composed of a cup body (11) and a cup bottom (12), and wherein: The upper end of the cup body (11) is provided with a cup rim (111), and the surface of the cup body (11) is hot-pressed to form a reinforced concave rim (112). The tea cup (1) is made of CPLA biodegradable material.

2. The CPLA biodegradable teacup according to claim 1, characterized in that: The cross section of the reinforced concave edge (112) is in an inner arc shape, the inner concave depth of the reinforced concave edge (112) is 0.8-1 mm, and the edge diameter of the reinforced concave edge (112) is 1.8-2.2 mm.

3. A method for producing a CPLA biodegradable tea cup, characterized in that: The method comprises implementing a method for producing a CPLA biodegradable tea cup as claimed in any one of claims 1 to 2, and further comprising a pressing edge device (2) for producing the reinforced concave edge (112) by hot pressing, wherein the pressing edge device (2) comprises a frame (21), and a tea cup mold (22) is disposed laterally on the right side of the frame (21), and a pressing edge assembly (23) is disposed on the periphery of the tea cup mold (22), and a cooling mechanism (24) and a suction cup assembly (25) are disposed on the left side of the frame (21), the other end of the cooling mechanism (24) is extended and fixed to the middle part of the cavity of the tea cup mold (22) through an air intake hose, and the other end of the suction cup assembly (25) is extended and fixed to the right side surface of the tea cup mold (22) through an air pipe; The teacup sleeve mold (22) is composed of a top sleeve mold (221), a pressure edge sleeve mold (222) and a bottom sleeve mold (223) which are sleeved together from left to right; The pressing edge assembly (23) comprises a bracket (231), and a push plate assembly (232) is arranged on the top surface of the bracket (231), and a plurality of clamping assemblies (233) are arranged in a circular array in the middle cavity of the push plate assembly (232), and the number of each clamping assemblies (233) is four, and the outer ends of the four clamping assemblies (233) are movably abutted against the inner side surface of the push plate assembly (232) in turn, and a motor (234) is engaged on one side of the outer end of the push plate assembly (232); When the motor (234) drives the push plate assembly (232) to rotate clockwise, the four mold clamping components (233) are pushed to perform mold clamping and hot pressing with the surface of the pressing edge sleeve mold (222) to obtain the reinforced concave edge (112); When the motor (234) drives the push plate assembly (232) to rotate counterclockwise, the four mold clamping assemblies (233) are pushed to open the mold and to abut against the surface of the pressing edge sleeve mold (222) to disengage; The cooling mechanism (24) comprises a cold air generator (241), and the air outlet end of the cold air generator (241) is connected to a blowing piece (242) via an air inlet hose, and a sealing air port cushion (243) is provided on the outer side sealing sleeve of the blowing piece (242), and the outer side surface of the sealing air port cushion (243) is sealed against the inner ring surface of the pressure edge sleeve mold (222).

4. The method for producing a CPLA biodegradable tea cup according to claim 3, characterized in that: A hose passage (2211) is provided through the middle of the top sleeve mold (221); A sealing inner groove (2221) is provided in the middle of the inner ring surface of the pressing edge sleeve die (222), a forming groove (2222) for hot pressing the reinforcing concave edge (112) is provided in the middle of the outer ring surface of the pressing edge sleeve die (222), and a plurality of first air outlet holes (2223) are provided in a circular array between the forming groove (2222) and the sealing inner groove (2221); A suction cup seat (2231) is provided on the bottom surface of the cavity of the bottom sleeve mold (223), and a suction cup opening (2232) is provided through the middle of the bottom surface of the cavity of the bottom sleeve mold (223).

5. The method for producing a CPLA biodegradable tea cup according to claim 4, characterized in that: The push plate group (232) comprises a push plate body (2321), the push plate body (2321) is in an annular shape, a rotating plate (2322) is arranged on the bottom surface of the push plate body (2321), and a plurality of push blocks (2323) are arranged in an annular array on the top surface of the push plate body (2321), the number of each push block (2323) is four, a rack (2324) is arranged on one side of the outer end of the push plate body (2321), the rack (2324) is in an arc shape, and a driving gear meshing with the rack (2324) is arranged on the motor (234).

6. The method for producing a CPLA biodegradable tea cup according to claim 5, characterized in that: The inner side surface of each push block (2323) is provided with an arc-shaped slope surface (23231) which is higher on the left and lower on the right, and a slideway (23232) is provided along the arc-shaped surface in the middle of the arc-shaped slope surface (23231).

7. The method for producing a CPLA biodegradable tea cup according to claim 6, characterized in that: Each of the mold clamping components (233) comprises a telescopic slide seat (2331), and a slide rod (2332) is movably sleeved in the middle of the telescopic slide seat (2331), and a spring (2333) is sleeved on the outer side of the slide rod (2332), and a pushing pulley (2334) that is movably opposed to the slideway (23232) is arranged at the outer end of the slide rod (2332), and a molded part seat (2335) is arranged at the inner end of the slide rod (2332), and a molded part body (2336) is arranged on the other side of the molded part seat (2335), and a heating plate (2337) is arranged at one end of the inner side of the molded part body (2336), the molded part body (2336) is in an arc shape and is made of copper, and the cross section of the slide rod (2332) is in a hexagonal shape; When the four molding body bodies (2336) are molded together, a circular ring that matches the molding groove (2222) is formed.

8. The method for producing a CPLA biodegradable tea cup according to claim 7, characterized in that: The blowing member (242) comprises a circular tube (2421), the cross section of the circular tube (2421) is square-shaped, the inner ring of the circular tube (2421) is connected to an air inlet pipe head (2422), and the outer ring surface of the circular tube (2421) is provided with a plurality of second air outlet holes (2423) at equal intervals in a circular array.

9. The method for producing a CPLA biodegradable tea cup according to claim 8, characterized in that: The sealing air outlet pad (243) comprises a circular gasket (2431), and an arc-shaped abutment surface (2432) is arranged on the outer side surface of the circular gasket (2431), and a plurality of third air outlet holes (2433) are equidistantly arranged on the circular gasket (2431) in a circular array. The sealing air outlet pad (243) is made of rubber material, and each of the first air outlet holes (2223), each of the second air outlet holes (2423), and each of the third air outlet holes (2433) are connected one by one.