Double-layer pet milk tea cup with anti-scald function
By using a double-layer PET milk tea cup design, with an outer wall made of PET material and an inner wall made of modified PCT material, combined with a sealant and a breathable system, the problems of heat transfer and material migration in PET milk tea cups are solved. This addresses the issue of PET milk tea cups being too hot to handle, which is a common problem in scalding milk tea cups. The design achieves effective heat insulation, which is balanced by the breathable system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG XIHENG TECH NEW MATERIAL CO LTD
- Filing Date
- 2025-10-17
- Publication Date
- 2026-06-26
AI Technical Summary
Existing PET milk tea cups have poor heat insulation, which can easily lead to burns. Furthermore, harmful substances may migrate when PET material comes into contact with hot beverages, affecting health.
It adopts a double-layer structure, with the outer wall made of PET material and the inner wall made of modified PCT material, with a cavity in the middle, which is connected by high-temperature resistant sealant. The inner wall is equipped with a sticker thermometer and a ventilation system to achieve good heat insulation and air pressure balance.
Effectively prevents burns, avoids the migration of harmful substances, provides a safe drinking experience, and balances air pressure through a ventilation system to ensure safe use. The ventilation system balances air pressure to ensure safe use and avoids air pressure rise due to airflow, thus ensuring the hygiene of the milk tea.
Smart Images

Figure CN224410232U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water cup technology, specifically a double-layered PET milk tea cup that prevents scalding. Background Technology
[0002] In the existing beverage market, milk tea is a popular hot beverage, and the performance of its container directly affects the consumer's experience and health and safety. Currently, most milk tea cups on the market are made of PET (polyethylene terephthalate), which has advantages such as low cost, high transparency, and good formability.
[0003] However, in actual use, single-layer milk tea cups made of PET have significant defects:
[0004] In terms of heat insulation performance, single-layer PET milk tea cups have poor heat insulation capabilities. When filled with hot milk tea at a temperature of 60-95℃, the heat will be quickly transferred through the cup body to the outer wall, causing the surface temperature of the cup body to rise sharply. Consumers are very likely to burn their hands while holding the cup, which not only affects the convenience and comfort of drinking, but may also cause burn accidents.
[0005] From a health and safety perspective, PET material has limitations in high-temperature resistance. When PET material comes into direct contact with beverages at temperatures above 80°C, its molecular structure stability decreases, which may cause harmful substances (such as plasticizers) in the cup to migrate into the beverage. Long-term consumption of such beverages may pose a potential threat to human health.
[0006] To address these issues, we offer a heat-resistant double-walled PET milk tea cup. Utility Model Content
[0007] 1) Technical problems to be solved
[0008] This invention proposes a double-layered PET milk tea cup that prevents burns. By combining the outer wall (PET material), the inner wall (modified PCT material), and the cavity, it solves the problems of poor heat insulation in current milk tea cups, which may cause burns; and the potential health risks posed by long-term use of PET material in direct contact with hot beverages.
[0009] Technical solution
[0010] To achieve the above objectives, this utility model provides the following technical solution: a heat-resistant double-layer PET milk tea cup, comprising a cup body, wherein a cup lid is provided at the upper end of the cup body;
[0011] The cup body is double-layered, including an outer wall and an inner wall, with a cavity between the outer wall and the inner wall;
[0012] The outer wall is made of PET material, and the inner wall is made of modified PCT material;
[0013] The upper edge of the inner wall forms a cup mouth ring, and a connecting groove is provided at the lower end of the cup mouth ring;
[0014] A connecting ring is connected to the upper end of the outer wall. The connecting ring is located in the connecting groove, and the two are connected by high-temperature resistant sealant.
[0015] A sticker thermometer is installed inside the cavity, and the sticker thermometer is adhered to the outer end of the inner wall.
[0016] Furthermore, the lower end of the outer wall is provided with anti-slip particles, and the connecting ring, anti-slip particles and outer wall are integrally injection molded.
[0017] Furthermore, the sticker-type thermometer is reversible, and its temperature component returns to its original color when cooled, allowing for continuous reuse.
[0018] Furthermore, a rubber ring is provided at the connection between the cup lid and the inner wall, and a water absorption hole is provided at the center end of the cup lid, with a rubber sealing ring provided inside the water absorption hole.
[0019] Furthermore, a rubber cap is connected to the side end of the rubber sealing ring via a rubber sheet, and the rubber cap can be connected inside the rubber sealing ring.
[0020] Furthermore, the cup lid has a vent hole inside, and a fixing ring is connected to the upper edge of the vent hole, and a vent tube is connected to the side end of the fixing ring.
[0021] Furthermore, a rotating ring is rotatably connected inside the fixed ring, and a connecting hole is provided on the side end of the rotating ring, which can communicate with the vent pipe. The upper edge of the rotating ring is an anti-slip toothed ring.
[0022] (iii) Beneficial effects:
[0023] Compared with existing technologies, this anti-scalding double-walled PET milk tea cup has the following beneficial effects:
[0024] 1. This anti-scalding double-walled PET milk tea cup adopts a double-walled structure, with the outer wall made of PET material and the inner wall made of modified PCT material, with a cavity in the middle, which can effectively block heat transfer and achieve a good anti-scalding effect. At the same time, the high temperature resistance of the modified PCT inner wall avoids the risk of harmful substances migrating due to direct contact between PET and hot beverages.
[0025] Second, this anti-scalding double-walled PET milk tea cup features a fixed ring, a vent tube, and a rotating ring. Rotating the rotating ring adjusts the position of the connecting hole, connecting it to the vent tube. This allows hot air inside the cup to escape through the vent, connecting hole, and vent tube, preventing a sudden increase in pressure and effectively balancing the internal pressure. This avoids inconvenience and danger caused by pressure issues. Furthermore, the horizontal placement of the vent tube effectively prevents dust from entering the cup. When the connecting hole and vent tube are misaligned, the cup is sealed, providing insulation. Attached Figure Description
[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0027] Figure 1 This is a schematic diagram of the overall structure of the anti-scalding double-layer PET milk tea cup of this utility model;
[0028] Figure 2 This is a schematic diagram of the outer wall structure of the anti-scalding double-layer PET milk tea cup of this utility model;
[0029] Figure 3 This is a schematic diagram of the inner wall structure of the anti-scalding double-layer PET milk tea cup of this utility model;
[0030] Figure 4 This is a schematic diagram of the lid structure of the anti-scalding double-layer PET milk tea cup of this utility model;
[0031] Figure 5 This is a schematic diagram of the rotating ring structure of the anti-scalding double-layer PET milk tea cup of this utility model;
[0032] Figure 6 This is a cross-sectional structural diagram of the anti-scalding double-layer PET milk tea cup of this utility model.
[0033] In the diagram: 1. Cup body; 101. Outer wall; 102. Inner wall; 103. Cavity; 104. Cup mouth ring; 105. Connecting groove; 106. Connecting ring; 107. Anti-slip particles; 2. Cup lid; 3. Sticker thermometer; 4. Rubber sealing ring; 5. Rubber cap; 6. Vent hole; 7. Fixing ring; 8. Vent tube; 9. Rotating ring; 10. Connecting hole. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0035] like Figures 1-6 As shown, this utility model provides a technical solution: a heat-resistant double-layer PET milk tea cup, including a cup body 1. The cup body 1 is double-layered, including an outer wall 101 and an inner wall 102. A cavity 103 is provided between the outer wall 101 and the inner wall 102. The outer wall 101 is made of PET material, which has good toughness and transparency, giving the milk tea cup good strength and making it less prone to breakage. The inner wall 102 is made of modified PCT material, which has excellent high-temperature resistance and can withstand the heat of hot milk tea without deformation. At the same time, its chemical properties are stable, avoiding the risk of harmful substance migration that may occur when PET material comes into direct contact with hot beverages. This ensures the safety of the beverage from the source, allowing consumers to use it with confidence.
[0036] The upper edge of the inner wall 102 forms a cup mouth ring 104, which effectively prevents scratches to the user. A connecting groove 105 is provided at the lower end of the cup mouth ring 104. A connecting ring 106 is connected to the upper end of the outer wall 101. The connecting ring 106 is located in the connecting groove 105. The two are connected by a high-temperature resistant sealant. This connection method not only ensures the stability of the double-layer cup body 1 structure, but also ensures the sealing of the cavity 103, further enhancing the heat insulation effect. Anti-slip particles 107 are provided at the bottom of the cup at the lower end of the outer wall 101. The anti-slip particles 107 increase the friction between the cup and the surface on which it is placed, effectively preventing the cup from sliding or tipping over on the table. The connecting ring 106, the anti-slip particles 107 and the outer wall 101 are integrally injection molded, ensuring the integrity and strength of the outer wall 101.
[0037] A sticker thermometer 3 is installed inside the cavity 103. The sticker thermometer 3 is adhered to the outer end of the inner wall 102. The sticker thermometer 3 is reversible, and its temperature component will return to its original color when cooled, so it can be reused continuously. The principle of the sticker thermometer 3 is to use the temperature-sensitive liquid crystal to change the crystal shape at different temperatures, which changes the reflection of light and presents different colors to reflect the current measured temperature.
[0038] A cup lid 2 is provided at the upper end of the cup body 1. A rubber ring is provided at the connection between the cup lid 2 and the inner wall 102 to increase the sealing between the cup lid 2 and the cup body 1.
[0039] The cup lid 2 has a water absorption hole at the center end, and a rubber sealing ring 4 is installed inside the water absorption hole. A rubber cap 5 is connected to the side end of the rubber sealing ring 4 through a rubber sheet. The rubber cap 5 can be connected inside the rubber sealing ring 4. When not drinking, the rubber cap 5 can close the water absorption hole to further enhance the sealing performance.
[0040] The cup lid 2 has a vent hole 6 inside, and a fixing ring 7 is connected to the upper edge of the vent hole 6. A vent tube 8 is connected to the side of the fixing ring 7. The vent tube 8 is set horizontally. This design effectively prevents external dust from falling into the cup with the airflow, ensuring the hygiene of the milk tea. A rotating ring 9 is rotatably connected inside the fixing ring 7. A connecting hole 10 is opened on the side of the rotating ring 9. The connecting hole 10 can communicate with the vent tube 8. The upper edge of the rotating ring 9 is a non-slip toothed ring, which makes it easy for users to rotate the rotating ring 9 with their fingers.
[0041] Working principle: During use, the inner wall 102 is made of modified PCT material, which can safely withstand the high temperature of milk tea and prevent harmful substances from migrating into the milk tea; the double-layer cup body 1 structure and the cavity 103 in the middle have good heat insulation effect. During the process of heat being transferred from the inner wall 102 to the outer wall 101, it is effectively blocked by the air in the cavity 103, preventing the temperature of the outer wall 101 from rising too much, so that the user will not feel hot when holding the cup. At the same time, the sticker thermometer 3 in the cavity 103 will display different colors according to the temperature change of the milk tea, so that consumers can intuitively know the temperature of the milk tea through the outer wall 101.
[0042] If the cup contains hot milk tea, the air inside will expand due to heat over time, increasing the air pressure. At this time, rotating the ring 9 connects the connecting hole 10 to the vent tube 8, allowing the hot air inside the cup to escape through the vent hole 6, the connecting hole 10, and the vent tube 8, thus balancing the air pressure inside the cup. This makes it easier to open the lid 2 and prevents splashing. After drinking, rotating the ring 9 again will separate the connecting hole 10 from the vent tube 8, creating a sealed space inside the cup body 1, which can keep the cup warm.
[0043] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0044] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A double-layer PET scald-proof milk tea cup comprising a cup body (1), characterized in that: The upper end of the cup body (1) is provided with a cup lid (2); The cup body (1) is double-layered, including an outer wall (101) and an inner wall (102), with a cavity (103) between the outer wall (101) and the inner wall (102). The outer wall (101) is made of PET material, and the inner wall (102) is made of modified PCT material; The upper edge of the inner wall (102) forms a cup mouth ring (104), and the lower end of the cup mouth ring (104) is provided with a connecting groove (105). The upper end of the outer wall (101) is connected to a connecting ring (106), which is located in the connecting groove (105). The two are connected by a high-temperature resistant sealant. A sticker thermometer (3) is installed inside the cavity (103), and the sticker thermometer (3) is attached to the outer end of the inner wall (102).
2. The double-layer PET scald-proof milk tea cup according to claim 1, characterized in that: The bottom of the outer wall (101) is provided with anti-slip particles (107), and the connecting ring (106), anti-slip particles (107) and outer wall (101) are integrally injection molded.
3. The double-layer PET scald-proof milk tea cup according to claim 1, characterized in that: The sticker thermometer (3) is reversible, and its temperature component will return to its original color when cooled, allowing for continuous reuse.
4. The anti-scalding double-layer PET milk tea cup according to claim 1, characterized in that: A rubber ring is provided at the connection between the cup lid (2) and the inner wall (102). A water absorption hole is provided at the center end of the cup lid (2), and a rubber sealing ring (4) is provided inside the water absorption hole.
5. The anti-scalding double-layer PET milk tea cup according to claim 4, characterized in that: The rubber sealing ring (4) has a rubber cover (5) connected to its side end via a rubber sheet. The rubber cover (5) can be connected inside the rubber sealing ring (4).
6. The anti-scalding double-layer PET milk tea cup according to claim 1, characterized in that: The cup lid (2) has a vent hole (6) inside, and a fixing ring (7) is connected to the upper edge of the vent hole (6), and a vent tube (8) is connected to the side end of the fixing ring (7).
7. A scalding-proof double-walled PET milk tea cup according to claim 6, characterized in that: The fixed ring (7) is rotatably connected to a rotating ring (9). The rotating ring (9) has a connecting hole (10) on its side end. The connecting hole (10) can communicate with the vent pipe (8). The upper edge of the rotating ring (9) is an anti-slip toothed ring.