Milk tea cup sealing foaming cover film

Abstract

The utility model relates to the technical field of beverage packaging, and provides a milk tea cup sealing foaming cover film which comprises a foaming cover film, a sealing film is arranged in the foaming cover film in a hot-pressing mode, a separation notch is formed in the outer wall of the sealing film in a stamping mode, and a polyester layer film is arranged in the sealing film in a hot-pressing mode. A thermoplastic elastic layer film is arranged below the aluminum foil layer film in a hot-pressing mode, and a polyamide layer film is arranged below the thermoplastic elastic layer film in a hot-pressing mode. The sealing film is composed of four layers of composite materials including a polyester layer film, a foamed polyethylene layer film, an aluminum foil layer film and a thermoplastic elastic layer film, and is prepared through extrusion blow molding, extrusion foaming, rolling and injection molding processes. The thermoplastic elastic layer film wraps the edge of the sealing film, soft touch and anti-stabbing protection are provided, and safety and use comfort of a user are improved. The integral sealing film design not only ensures the safety and freshness of the beverage, but also improves the use experience and market competitiveness of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage packaging, and specifically, to a foaming cover film for sealing a milk tea cup. Background Art

[0002] With the acceleration of the pace of life and the increasing demand of consumers for convenient beverages, milk tea has become one of the favorite beverages of the majority of consumers, especially the young population. The convenient packaging and hygienic safety of milk tea have become important issues that both merchants and consumers are concerned about. In order to ensure the quality and safety of milk tea, the sealing technology of milk tea cups has been continuously developed and improved. At present, the sealing films widely used in the market mainly include single-layer or multi-layer composite materials, and the sealing of milk tea cups is achieved through processes such as heat sealing and mechanical pressing. Although the traditional sealing films meet the market demand to a certain extent, there are still some deficiencies, such as insufficient sealing performance, insufficient sealing strength, and the problem that users are easily stabbed during use. Therefore, a foaming cover film for sealing a milk tea cup is proposed to solve the above problems. Content of the Utility Model

[0003] The utility model proposes a foaming cover film for sealing a milk tea cup, which solves the problems of insufficient sealing performance, insufficient sealing strength, and the problem that users are easily stabbed during use.

[0004] The technical solution of the utility model is as follows:

[0005] A foaming cover film for sealing a milk tea cup, including a foaming cover film, a sealing film is hot-pressed inside the foaming cover film, a separation notch is stamped on the outer wall of the sealing film, a polyester layer film is hot-pressed inside the sealing film, a foamed polyethylene layer film is hot-pressed below the polyester layer film, an aluminum foil layer film is hot-pressed below the foamed polyethylene layer film, a thermoplastic elastomer layer film is hot-pressed below the aluminum foil layer film, a polyamide layer film is hot-pressed below the thermoplastic elastomer layer film, a high-density polyethylene layer film is hot-pressed below the polyamide layer film, a low-density polyethylene layer film is arranged inside the sealing film, and a protective edge layer film is hot-pressed below the low-density polyethylene layer film.

[0006] Preferably, the thickness of the polyester layer film is set to twenty microns, the polyester layer film is formed into a film shape through a die head and is formed by air blowing.

[0007] Preferably, the thickness of the foamed polyethylene layer film is set to sixty microns, the foamed polyethylene layer film is formed through a foaming process, and uniformly distributed bubbles are contained inside the foamed polyethylene layer film.

[0008] Preferably, the thickness of the aluminum foil layer film is set to twenty microns, the aluminum foil layer film is made by a rolling process, and the aluminum foil layer film is thinned to the required thickness through hot rolling and cold rolling processes.

[0009] Preferably, the thickness of the thermoplastic elastomer layer film is set to 10 microns. The thermoplastic elastomer layer film is formed by injection molding and is cooled and solidified into the desired shape and thickness.

[0010] Preferably, the thickness of the polyamide layer film is set to 30 microns. The polyamide layer film is made by an extrusion casting process and is wound into a roll after cooling.

[0011] Preferably, the thickness of the high-density polyethylene layer film is set to 40 microns, and the thickness of the low-density polyethylene layer film is set to 30 microns. Both the high-density polyethylene layer film and the low-density polyethylene layer film are made by a blown film process, are formed into a film shape through a die head, and are formed by air blowing to control the film thickness.

[0012] Preferably, a protective edge layer film is press-fitted on the side of the foamed cover film and is made of a rubber material.

[0013] The beneficial effects of the present utility model are as follows: The sealing film is composed of four composite materials, namely a polyester layer film, a foamed polyethylene layer film, an aluminum foil layer film, and a thermoplastic elastomer layer film, and is made by an extrusion blow molding process, an extrusion foaming process, a rolling process, and an injection molding process. The polyester layer film provides high transparency and tear resistance, making the sealing film durable during use and capable of clearly displaying the drink in the cup; the lightweight and elastic structure of the foamed polyethylene layer film enhances the sealing effect, prevents liquid leakage, and provides buffer protection; the aluminum foil layer film has excellent barrier properties, effectively blocks oxygen and moisture, extends the shelf life of the drink, and its thermal conductivity helps with the sealing operation; the thermoplastic elastomer layer film is coated on the edge of the sealing film, providing a soft touch and anti-stabbing protection, enhancing the safety and comfort of use for users. The overall design of the sealing film not only ensures the safety and freshness of the drink but also improves the product's usage experience and market competitiveness.

[0014] The transmission film is composed of three composite materials, namely a polyamide layer film, a high-density polyethylene layer film, and a low-density polyethylene layer film, and is made by an extrusion casting process and a blown film process. The polyamide layer film provides excellent wear resistance and tear resistance, enabling the transmission film to withstand frequent mechanical transmissions without damage and extending its service life; the high-density polyethylene layer film has high strength and rigidity, providing structural support and stability, ensuring reliability and durability during the transmission process; the low-density polyethylene layer film provides flexibility and elasticity, enabling the transmission film to remain flexible during mechanical movement, not easily break, and adapt to various transmission requirements. The design of the three-layer composite structure effectively improves the overall performance of the transmission film, ensuring excellent performance in complex and high-intensity transmission environments.

[0015] The sealing film and the transmission film are firmly connected through a hot pressing process. This process softens or melts both of them on the contact surface through high temperature and high pressure, and then applies pressure to form a strong bond. The hot pressing process is applicable to a variety of film materials and can adjust the temperature and pressure according to the characteristics of different materials to ensure the best connection effect. Through this process, a seamless connection is formed between the transmission film and the sealing film, which has high strength and durability and can withstand various stresses during the transmission and sealing processes, ensuring the overall quality and stability of the product. Finally, the setting of the edge protection layer film makes the foaming cover film have a certain protection effect against stabbing. Description of the Drawings

[0016] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the foaming cover film of the present utility model;

[0018] Figure 2 For the present utility model Figure 1 An enlarged view of the structure at A;

[0019] Figure 3 For the present utility model Figure 1 An enlarged view of the structure at B;

[0020] Figure 4 It is a three-dimensional partial sectional structure state schematic diagram of the sealing film of the present utility model.

[0021] Figure 5 For the present utility model Figure 4 An enlarged view of the structure at C.

[0022] In the figure: 1. Foaming cover film; 2. Sealing film; 3. Separation notch; 4. Polyester layer film; 5. Foamed polyethylene layer film; 6. Aluminum foil layer film; 7. Thermoplastic elastomer layer film; 8. Polyamide layer film; 9. High-density polyethylene layer film; 10. Low-density polyethylene; 11. Edge protection layer film. Specific Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0024] Refer to the attached drawings of the specification Figures 1-5, a foamed sealing film for a milk tea cup, comprising a foamed film 1, characterized in that a sealing film 2 is thermally pressed inside the foamed film 1, a separation notch 3 is stamped on the outer wall of the sealing film 2, a polyester film 4 is thermally pressed inside the sealing film 2, a foamed polyethylene film 5 is thermally pressed below the polyester film 4, an aluminum foil film 6 is thermally pressed below the foamed polyethylene film 5, a thermoplastic elastomer film 7 is thermally pressed below the aluminum foil film 6, a polyamide film 8 is thermally pressed below the thermoplastic elastomer film 7, a high-density polyethylene film 9 is thermally pressed below the polyamide film 8, a low-density polyethylene film 10 is arranged inside the sealing film 2, and a side protection film 11 is thermally pressed below the low-density polyethylene film 10. Then, the thickness of the polyester film 4 is set to twenty microns, and the polyester film 4 is formed into a film shape through a die head and blown into shape using air flow. By this method, it is possible to ensure that the thickness of the polyester film is uniform, the surface is smooth, and it has good barrier properties, effectively preventing the infiltration of oxygen and moisture and maintaining the freshness and aroma of the milk tea.

[0025] Subsequently, the thickness of the foamed polyethylene film 5 is set to sixty microns, and the foamed polyethylene film 5 is formed through a foaming process. The foamed polyethylene film 5 contains uniformly distributed bubbles inside. The foaming process ensures the lightness and elasticity of the film, provides good buffering performance, prevents impacts and vibrations on the milk tea cup during transportation and use, and protects the integrity of the beverage.

[0026] Next, the thickness of the aluminum foil film 6 is set to twenty microns, and the aluminum foil film 6 is made by a rolling process. The aluminum foil film 6 is thinned to the required thickness through hot rolling and cold rolling processes. The rolling process enables the aluminum foil film to have excellent flatness and smoothness, and at the same time improves its mechanical strength, making it have better durability and stability during the sealing process.

[0027] At this time, the thickness of the thermoplastic elastomer film 7 is set to ten microns, and the thermoplastic elastomer film 7 is formed by injection molding. The thermoplastic elastomer film 7 is cooled and solidified into the required shape and thickness. The injection molding process ensures the flexibility and elasticity of the film, provides additional protection, prevents the sealing film from stabbing users during use, and improves the safety and comfort of users.

[0028] Then, the thickness of the polyamide film 8 is set to thirty microns, and the polyamide film 8 is made by an extrusion casting process. After cooling, the polyamide film 8 is wound into a roll. The extrusion casting process makes the transmission film have high wear resistance and tear resistance, can withstand frequent mechanical transmission, extends the service life, and at the same time maintains the stability and reliability of the transmission process.

[0029] At this time, the thickness of the high-density polyethylene layer film 9 is set to 40 microns, and the thickness of the low-density polyethylene layer film 10 is set to 30 microns. Both the high-density polyethylene layer film 9 and the low-density polyethylene layer film 10 are made by the blown film process, and are formed into a film shape through a die head, and are formed by air blowing to control the film thickness. The blown film process endows the high-density polyethylene layer film with high strength and rigidity, providing structural support and stability, while the low-density polyethylene layer film provides flexibility and elasticity, ensuring that it is not easily broken during the transmission process.

[0030] It should be noted that a protective edge layer film 11 is press-fitted on the side of the foaming cover film 1, which is made of rubber material and is used to provide additional sealing and protection functions. The rubber material has good elasticity and sealing performance, which can effectively prevent external pollutants from entering the cup, ensure the hygiene and safety of the milk tea, and at the same time improve the firmness and durability of the overall sealing.

[0031] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A foamed sealing cover film for a milk tea cup, comprising a foamed cover film (1), characterized in that, Inside the foaming cover film (1), a sealing film (2) is thermally pressed. On the outer wall of the sealing film (2), a separation notch (3) is stamped. Inside the sealing film (2), a polyester layer film (4) is thermally pressed. Below the polyester layer film (4), a foamed polyethylene layer film (5) is thermally pressed. Below the foamed polyethylene layer film (5), an aluminum foil layer film (6) is thermally pressed. Below the aluminum foil layer film (6), a thermoplastic elastomer layer film (7) is thermally pressed. Below the thermoplastic elastomer layer film (7), a polyamide layer film (8) is thermally pressed. Below the polyamide layer film (8), a high-density polyethylene layer film (9) is thermally pressed. Inside the sealing film (2), a low-density polyethylene layer film (10) is provided. Below the low-density polyethylene layer film (10), a side protection layer film (11) is thermally pressed.

2. The foaming sealing film for a milk tea cup according to claim 1, wherein The thickness of the polyester layer film (4) is set to twenty micrometers. The polyester layer film (4) is formed into a film shape through a die head and is formed by air blowing.

3. A foaming sealing film for a milk tea cup according to claim 1, characterized in that, The thickness of the foamed polyethylene layer film (5) is set to sixty micrometers. The foamed polyethylene layer film (5) is formed through a foaming process, and the foamed polyethylene layer film (5) contains uniformly distributed bubbles inside.

4. The foaming sealing film for a milk tea cup according to claim 1, wherein The thickness of the aluminum foil layer film (6) is set to twenty micrometers. The aluminum foil layer film (6) is made by a rolling process, and the aluminum foil layer film (6) is thinned to the required thickness through hot rolling and cold rolling processes.

5. A foaming sealing film for a milk tea cup according to claim 1, characterized in that, The thickness of the thermoplastic elastomer layer film (7) is set to ten micrometers. The thermoplastic elastomer layer film (7) is formed by injection molding, and the thermoplastic elastomer layer film (7) is cooled and solidified into the required shape and thickness.

6. A foaming sealing film for a milk tea cup according to claim 1, characterized in that The thickness of the polyamide layer film (8) is set to thirty micrometers. The polyamide layer film (8) is made by an extrusion casting process, and the polyamide layer film (8) is wound into a roll after cooling.

7. A foaming sealing film for a milk tea cup according to claim 1, characterized in that, The thickness of the high-density polyethylene layer film (9) is set to forty micrometers, and the thickness of the low-density polyethylene layer film (10) is set to thirty micrometers. Both the high-density polyethylene layer film (9) and the low-density polyethylene layer film (10) are made by a blown film process, and are formed into a film shape through a die head and are formed by air blowing to control the film thickness.

8. A foaming sealing film for a milk tea cup according to claim 4, characterized in that, On the side of the foaming cover film (1), a side protection layer film (11) is press-fitted and is made of rubber material.

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