Capsule cavity type fresh-keeping packaging structure
The multi-layer composite material cavity-type fresh-keeping packaging structure solves the shortcomings of the existing single-use brewing structure in terms of freshness preservation and shelf life, achieves effective sealing and long-term preservation of brewing ingredients, and maintains the original flavor and quality.
Patent Information
- Application Number
- CN202422700634.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The existing single-use brewing structure performs poorly in terms of freshness preservation and shelf life extension. It is easily affected by external environmental factors and has insufficient sealing performance, which leads to a rapid decline in the flavor and quality of the brewing ingredients.
It adopts a cavity-type fresh-keeping packaging structure made of multi-layer composite materials, including a bottom box and a plastic sealing film. The bottom box is a three-layer composite material (PVC layer, light-blocking aluminum foil film layer, PP layer), and the plastic sealing film is a four-layer composite material (PP layer, light-blocking aluminum foil film layer, PVC layer, PE layer). It is formed by heat pressing to form a sealed storage space, plus a hard outer box and reinforcing ribs to enhance stability and pressure resistance.
It effectively isolates the external environment from the impact, prevents the invasion of air and microorganisms, maintains the flavor and quality of the brewing ingredients, extends the shelf life, and provides a convenient opening method.
Smart Images
Figure CN223356151U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a small-capacity fresh-keeping structure technology, in particular to a cavity-type fresh-keeping packaging structure. Background Art
[0002] Disposable brewing systems are small, disposable packaging structures typically used for quick and easy beverage brewing. They typically consist of a container filled with brewing ingredients such as tea leaves, coffee powder, and traditional Chinese medicine. Typical forms include solid tea bags and coffee capsules. The brewed beverage can be obtained by directly opening the container or by pressurized extraction. The entire container is single-use and can be discarded upon completion, offering excellent convenience.
[0003] However, existing single-shot brewing structures have some shortcomings, such as poor performance in preserving freshness and extending shelf life. Because these structures are typically made of a single material, such as paper or plastic, their ability to maintain food freshness is limited and they are easily affected by external environmental factors (such as humidity and temperature), often lacking optimal preservation performance. Furthermore, these materials often lack sufficient sealing to completely isolate air and microbial intrusion, easily causing brewing ingredients such as tea leaves, coffee powder, and traditional Chinese medicine to lose their original flavor and quality over a short period of time. Utility Model Content
[0004] The technical problem solved by the present invention is to provide a cavity-type fresh-keeping packaging structure, which can be used to solve the defects in the above technical background.
[0005] The technical problem solved by the present invention is achieved by the following technical solutions:
[0006] A cavity-type fresh-keeping packaging structure, comprising a matching bottom box and a plastic sealing film; both the bottom box and the plastic sealing film are multi-layer composite structures;
[0007] The bottom box is a three-layer composite material structure, which includes a PVC layer, a light-blocking aluminum foil layer, and a PP layer from bottom to top. The three-layer composite material structure is hot-pressed and formed with a concave volume cavity as a material volume cavity; the bottom box has a hot-pressed edge reserved on the outer edge of the concave volume cavity;
[0008] The plastic sealing film is a four-layer composite material structure, which includes a PP layer, a light-blocking aluminum foil film layer, a PVC layer and a PE layer from bottom to top; the plastic sealing film is consistent with the orthographic projection size of the bottom box, covers the surface of the concave volume cavity, and is hot-pressed together with the bottom box at the hot-pressing edge position, so that the concave volume cavity forms a sealed storage space after the plastic sealing film and the bottom box are hot-pressed.
[0009] As a further limitation, the packaging structure further includes an outer box, which surrounds the material volume cavity area of the bottom box on the outside and has an outer edge pressed on the lower surface of the hot pressing edge;
[0010] The outer box is made of a hard plastic material, and reinforcing ribs for maintaining the outline of the outer box cavity are evenly formed on the inner annular surface of the outer box cavity; the reinforcing ribs have a surface on the inner side that matches the outer surface of the concave volume cavity, and are abutted against the outer surface of the concave volume cavity through this surface.
[0011] As a further limitation, the packaging structure also includes an outer cover, which is formed of plastic material, covers the outer surface of the plastic sealing film, and has a buckling edge that matches the hot-pressed edge on the bottom box.
[0012] As a further limitation, the concave volume cavity is preferably one of a dish shape, a bowl shape, a concave arc shape, an inverted frustum shape, and a cylinder shape.
[0013] As a further limitation, the material placed in the concave volume cavity is one of tea, coffee, and Chinese medicinal materials with a moisture content of less than 15%, and the material type is finely divided material or powder or a combination of the two.
[0014] As a further limitation, in the three-layer composite material structure of the bottom box, the PP layer can be replaced by a BOPP film layer, or a BOPP film layer can be directly formed on the inner surface of the PP layer.
[0015] As a further limitation, the thickness of the bottom box is 0.8 to 1.5 mm, and the thickness ratio of the PVC layer to the PP layer used in the bottom box is 1:1 to 3:1.
[0016] As a further limitation, the thickness of the plastic film is 0.1 to 0.3 mm, and the thickness ratio of the PE layer to the PVC layer used in the plastic film is 1:1 to 1:2.
[0017] As a further limitation, the plastic sealing film further has a finishing layer formed on the surface of the PE layer, and the finishing layer is one or a combination of a printing layer, a matte coating, a UV coating, and an anti-counterfeiting mark.
[0018] As a further limitation, the bottom box is further formed with an outer convex ear edge at the heat-pressed edge position, and the plastic sealing film is reserved with an unsealed edge that is not heat-pressed on the outside of the outer convex ear edge position.
[0019] Beneficial effects: The utility model provides a cavity-type fresh-keeping packaging structure that uses a multi-layer composite material structure to package and protect the materials in the concave volume cavity. It is not only convenient for packaging and transportation, but also can be easily opened when in use. At the same time, the packaging body has high stability and pressure resistance, which can effectively prevent material leakage and isolate the invasion of air and microorganisms, thereby extending the shelf life of the internal materials. In addition, the use of a light-blocking aluminum foil film layer can further reduce the impact of light on the quality of the materials, ensuring that brewing materials such as tea, coffee powder, and Chinese medicinal materials maintain their original flavor and quality for a longer period of time. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a structural diagram of a preferred embodiment of the present utility model.
[0021] Figure 2 for Figure 1 A detailed enlarged diagram of part A.
[0022] Among them: 1. Unsealing edge; 2. External convex ear edge; 3. Plastic sealing film; 4. Concave volume cavity; 5. Outer box; 6. Bottom box; 7. Reinforcement ribs; 8. Hot pressing edge; 9. External edge; 10. PE layer; 11. First PVC layer; 12. First light-blocking aluminum foil film layer; 13. First PP layer; 14. Second PP layer; 15. Second light-blocking aluminum foil film layer; 16. Second PVC layer. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.
[0024] See also Figure 1 、 Figure 2 A preferred embodiment of a cavity-type fresh-keeping packaging structure is provided. In this embodiment, the cavity-type fresh-keeping packaging structure is a brewing capsule structure, and the brewing material in the capsule is a Chinese medicine component that is crushed and distributed in portions. A single brewing capsule can be used to brew a cup of about 350-500ml of Chinese medicine beverage.
[0025] The cavity-type fresh-keeping packaging structure includes a bottom box 6 and a plastic sealing film 3. Both the bottom box 6 and the plastic sealing film 3 are multi-layer composite structures, and are hot-pressed together with the plastic sealing film 3 at the outer edge 8 of the bottom box 6 using a hot pressing device to form a sealed storage space to ensure the fresh-keeping effect and sealing performance of the brewing materials stored in the package.
[0026] In this embodiment, the three-layer composite material structure of the bottom box 6 comprises, from bottom to top, a first PVC layer 11, a first light-blocking aluminum foil layer 12, and a first PP layer 13. This structure not only effectively isolates the body from external humidity and temperature fluctuations, but also prevents the intrusion of air and microorganisms, thereby maintaining the freshness and quality of the traditional Chinese medicine components. During the molding of the bottom box 6, the three film layers (i.e., the first PVC layer 11, the first light-blocking aluminum foil layer 12, and the first PP layer 13) are first superimposed and heat-pressed together to form a composite film layer. This composite film layer has a thickness of 1.2 mm, and the thickness ratio of the first PVC layer 11 to the first PP layer 13 is 3:2. During the molding of the bottom box 6, this composite film layer serves as the base layer. After stamping with a stamping die, it is cut and trimmed to obtain the finished bottom box 6 having the concave volume cavity 4.
[0027] The concave volume cavity 4 of the bottom box 6 is used to accommodate the brewing material. In different embodiments, the concave volume cavity 4 can be one of a dish, bowl, concave arc, inverted frustum, or cylinder to accommodate materials of different shapes and sizes and corresponding equipment requirements. In this embodiment, the concave volume cavity 4 of the bottom box 6 is designed as an inverted frustum to ensure uniform distribution and stable storage of the brewing material in the capsule.
[0028] In this embodiment, the plastic film 3 is a four-layer composite material structure, which includes, from bottom to top, a first PP layer 13, a first light-blocking aluminum foil layer 12, a first PVC layer 11, and a PE layer 10. The size of the plastic film 3 is consistent with the orthographic projection size of the bottom box 6 to ensure that it can completely cover and seal the concave volume cavity of the bottom box 6. At the position of the hot pressing edge 8, the plastic film 3 and the bottom box 6 are tightly combined by a hot pressing device so that the surface of the concave volume cavity 4 is sealed by the plastic film 3 to form a closed storage space, effectively isolating the influence of the external environment on the brewed product. In order to take into account the performance and cost of the plastic film 3, the thickness of the plastic film 3 is set to 0.2 mm, and the ratio of the thickness of the PE layer 10 to the first PVC layer 11 is 1:1.5.
[0029] The heat-pressed edge 8 of the bottom box 6 also has an external lip 2 formed thereon. This lip 2 assists with positioning and sealing during the heat-pressing process. Furthermore, the plastic film 3 has a reserved, unheat-pressed, tear-off edge 1 outside the lip 2. This allows the user to tear the film 3 along this edge, easily opening the package. The design of the tear-off edge 1 facilitates easy package opening while ensuring the package's sealing properties are intact.
[0030] To further enhance the stability and compressive strength of the package, the packaging structure of this embodiment also includes an outer box 5. This outer box 5 surrounds the material storage area of the base box 6 and has an outer edge 9 pressed against the lower surface of the hot press edge. The outer box 5 is molded from a hard plastic material, specifically ABS plastic in this embodiment. The outer box 5 is slightly larger than the base box 6, creating a space around the base box 6 and providing additional protection.
[0031] In this embodiment, the outer box 5 is cylindrical in shape as a whole, and an outer edge 9 is formed on the outer edge of the upper surface to match the heat-pressed edge 8. The outer edge 9 is heat-pressed with the outer edge of the bottom box 6 at the position of the heat-pressed edge 8, ensuring the stability and structural strength of the entire packaging structure. At the same time, the outer box 5 is provided with a plurality of reinforcing ribs 7 in an annular shape on the outer peripheral surface of the bottom of the inner side of the box body. The reinforcing ribs 7 are pressed against the bottom surface and side walls of the bottom box 6 on the outside to maintain the structural strength and box cavity profile of the outer box 5. The reinforcing ribs 7 have a surface on the inside that matches the outer surface of the concave volume pocket 4, and through this surface, the outer edge 9 is heat-pressed with the outer edge of the bottom box 6 at the position of the heat-pressed edge 8, ensuring the stability and structural strength of the entire packaging structure. Figure 1 The pattern shown abuts the outer surface of the concave volume cavity 4.
[0032] In other different applications, the material placed in the concave volume cavity 4 can also be other brewing materials such as tea, coffee or milk tea with a moisture content of less than 15%. The volume of a single concave volume cavity 4 is based on the volume of a common brewing cup. At the same time, the corresponding material type should be finely crushed material or powder or a combination of the two to ensure convenience and effect during brewing.
[0033] In another embodiment, a finishing layer is formed on the surface of the PE layer 10 of the plastic film 3. The finishing layer is a printing layer, and exquisite patterns and texts are formed on the surface through printing technology, which not only increases the aesthetics of the product, but also provides necessary information, such as product instructions, usage methods, etc.
[0034] In another embodiment, an outer cover may be provided on the outside of the plastic film 3 of the packaging structure. The outer cover should be formed of a plastic material, cover the outer surface of the plastic film 3, and have a snap-fit edge that matches the hot-pressed edge on the bottom box 6. The use of the outer cover can further protect the package and prevent the plastic film 3 from being opened due to sharp objects damaging it during packaging, storage, transportation, and use due to improper operation or other reasons.
[0035] In another embodiment, in order to further improve the antibacterial effect of the packaging structure, the second PP layer 14 in the three-layer composite material structure of the corresponding bottom box 6 can be replaced with a BOPP film layer, or a BOPP film layer can be directly formed on the inner surface of the PP layer. The BOPP film layer has good antibacterial properties and can effectively inhibit the growth and reproduction of bacteria. In this way, the packaging structure can not only maintain the freshness and quality of the traditional Chinese medicine components, but also effectively inhibit the growth of bacteria, thereby further ensuring the hygiene and safety of the brewed material.
[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention. Furthermore, it should be understood that after reading the technical content of the present invention, those skilled in the art may make various changes, modifications, and / or variations to the present invention, all of which equivalent forms fall within the scope of protection defined by the appended claims.
Claims
1. A cavity-type fresh-keeping packaging structure, characterized in that: It includes a matching bottom box and a plastic film; both the bottom box and the plastic film are multi-layer composite structures; The bottom box is a three-layer composite material structure, which includes a PVC layer, a light-blocking aluminum foil layer, and a PP layer from bottom to top. The three-layer composite material structure is hot-pressed and formed with a concave volume cavity as a material volume cavity; the bottom box has a hot-pressed edge reserved on the outer edge of the concave volume cavity; The plastic sealing film is a four-layer composite material structure, which includes a PP layer, a light-blocking aluminum foil film layer, a PVC layer and a PE layer from bottom to top; the plastic sealing film is consistent with the orthographic projection size of the bottom box, covers the surface of the concave volume cavity, and is hot-pressed together with the bottom box at the hot-pressing edge position, so that the concave volume cavity forms a sealed storage space after the plastic sealing film and the bottom box are hot-pressed.
2. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: The packaging structure also includes an outer box, which wraps around the material volume cavity area of the bottom box on the outside and has an outer edge pressed on the lower surface of the hot pressing edge.
3. The cavity-type fresh-keeping packaging structure according to claim 2, characterized in that: The outer box is made of a hard plastic material, and reinforcing ribs for maintaining the outline of the outer box cavity are evenly formed on the inner annular surface of the outer box cavity; the reinforcing ribs have a surface on the inner side that matches the outer surface of the concave volume cavity, and are abutted against the outer surface of the concave volume cavity through this surface.
4. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: The packaging structure also includes an outer cover, which is formed of plastic material, covers the outer surface of the plastic sealing film, and has a buckling edge that matches the hot-pressed edge on the bottom box.
5. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: The concave volume cavity is in the shape of a dish, a bowl, a concave arc, an inverted frustum, or a cylinder.
6. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: The material placed in the concave volume cavity is one of tea, coffee, and Chinese medicinal materials with a moisture content lower than 15%, and the material type is finely divided material or powder or a combination of the two.
7. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: In the three-layer composite material structure of the bottom box, a BOPP film layer is directly formed on the inner surface of the PP layer.
8. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: The thickness of the bottom box is 0.8-1.5 mm, and the thickness ratio of the PVC layer to the PP layer used in the bottom box is 1:1 to 3:
1.
9. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: The thickness of the plastic film is 0.1-0.3 mm, and the thickness ratio of the PE layer to the PVC layer used in the plastic film is 1:1 to 1:
2.
10. The cavity-type fresh-keeping packaging structure according to claim 1, characterized in that: As a further limitation, the plastic sealing film further has a finishing layer formed on the surface of the PE layer, and the finishing layer is one or a combination of a printing layer, a matte coating, a UV coating, and an anti-counterfeiting mark.