Environment-friendly plastic-free paper cup

Abstract

The utility model relates to a no -plastic paper cup technical field especially relates to a kind of environment-friendly no -plastic paper cup, and the environment-friendly no -plastic paper cup includes inner cup body and outer cup body, the inner cup body is set in outer cup body inside, the inner cup body is compatible with outer cup body cup mouth, first heat-insulating cavity is formed between the inner cup body and outer cup body;The outer cup body outside is equipped with heat-insulating sleeve, second heat-insulating cavity is formed between the heat-insulating sleeve and outer cup body. By naturally forming first heat-insulating cavity between inner cup body and outer cup body, the air in this cavity can effectively slow down the speed of heat transfer from inner cup body to outside, preliminary realization heat insulation, the outer cup body is also equipped with heat-insulating sleeve, second heat-insulating cavity is formed between the heat-insulating sleeve and outer cup body, constitute double air heat-insulating barrier, significantly improve user experience and application scene adaptability.

Description

Technical Field

[0001] This utility model relates to the field of plastic-free paper cup technology, and in particular to an environmentally friendly plastic-free paper cup. Background Technology

[0002] Plastic-free paper cups, a combination of environmental protection and technological advancement, refer to a new type of paper cup that uses a water-based coating instead of the traditional polyethylene coating. This innovative design makes them fully biodegradable, enabling them to degrade on their own. With continuous social development, technological advancements, and increasing environmental awareness, the environmental transformation of commonly used paper cups has become a trend, leading to the emergence of biodegradable paper cups. They not only prevent environmental pollution at its source but also decompose naturally in the soil within a few months, without causing secondary pollution.

[0003] In the field of plastic-free paper cup technology development, the patent application CN214608557U, titled "An Oil-proof and Water-proof Plastic-free Paper Cup," demonstrates significant technical advantages. This paper cup consists of a body and a bottom, which together form an inner cavity. The side of the body closest to the inner cavity is the inner surface of the body, and its second side heat-sealing area and the heat-sealing area at the bottom connection end are fully coated with a polyurethane coating. This polyurethane coating exhibits good film density after curing, and the film itself is highly resistant to water and oil. Furthermore, after drying and film formation, it can be ground and pulped together with the paper for reuse as a raw material, making it more environmentally friendly.

[0004] However, current plastic-free paper cups have certain limitations in their structural design. Since most plastic-free paper cups use a single paper base material, they lack low thermal conductivity materials that can effectively block heat transfer, resulting in poor heat insulation performance. When the cup contains hot liquids, heat can easily be transferred quickly through the paper cup to the user's hands, causing burns; conversely, when containing cold liquids, it can cause cold hands. This not only affects the user experience but also limits the application scenarios of plastic-free paper cups to some extent. Utility Model Content

[0005] The purpose of this invention is to solve the problem of poor heat preservation and insulation performance in existing plastic-free paper cup technology, and to provide an environmentally friendly plastic-free paper cup that significantly improves user experience and application scenario adaptability through a double air insulation barrier.

[0006] To achieve the above objectives, this utility model provides an environmentally friendly plastic-free paper cup, including an inner cup body and an outer cup body. The inner cup body is disposed inside the outer cup body, and the inner cup body is adapted to the cup mouth of the outer cup body. A first heat-insulating cavity is formed between the inner cup body and the outer cup body.

[0007] The outer cup body is fitted with a heat insulation sleeve, and a second heat insulation cavity is formed between the heat insulation sleeve and the outer cup body.

[0008] As a further description of the above technical solution: the bottom of the outer cup body is connected to a cup bottom, and the bottom of the cup bottom is provided with anti-slip texture.

[0009] As a further description of the above technical solution: the connecting ends of the inner cup body and the outer cup body away from the bottom of the cup extend outward to form a cup rim flange.

[0010] As a further description of the above technical solution: the middle part of the outer bottom surface of the inner cup body is concave inward to form a third heat-insulating cavity with the middle part of the inner bottom surface of the outer cup body.

[0011] As a further description of the above technical solution: the heat insulation sleeve includes a plate sleeve, the two ends of which are glued to the outer cup body, a second heat insulation cavity is formed between the plate sleeve and the outer cup body, and protrusions are provided on the outer side of the plate sleeve.

[0012] As a further description of the above technical solution: an identification paper ring is provided on the outside of the heat insulation sleeve, the upper part of the identification paper ring is glued to the heat insulation sleeve, and multiple slits are equally spaced on the lower part of the identification paper ring.

[0013] As a further description of the above technical solution: the heat insulation sleeve includes a corrugated sleeve, which is bonded to the outer cup body through a protrusion, and a second heat insulation cavity is formed between the protrusion and the outer cup body.

[0014] As a further description of the above technical solution: the inner cup body includes a biodegradable layer and a base paper layer, and the outer cup body has the same structure as the inner cup body.

[0015] As a further description of the above technical solution: the heat insulation sleeve is disposed in the upper part of the outer cup body.

[0016] As a further description of the above technical solution: the inner diameter of both the inner and outer cups gradually decreases from top to bottom.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] This invention achieves initial heat insulation by naturally forming a first heat-insulating cavity between the inner and outer cup bodies. The air in this cavity can effectively slow down the rate at which heat is transferred from the inner cup body to the outside. Furthermore, a heat-insulating sleeve is fitted over the outer cup body, forming a second heat-insulating cavity between the sleeve and the outer cup body. This constitutes a double air heat insulation barrier, significantly improving the user experience and adaptability to various application scenarios. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of an environmentally friendly plastic-free paper cup in one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of an environmentally friendly plastic-free paper cup in one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure for identifying the paper ring in one embodiment of the present invention;

[0022] Figure 4 for Figure 3 A diagram illustrating the folding of a paper ring;

[0023] Figure 5 for Figure 1 Schematic diagram of the inner cup body;

[0024] Figure 6 This is a schematic diagram of the structure of the heat insulation sleeve in another embodiment of the present invention;

[0025] Figure 7 for Figure 6 A schematic diagram of the operation of the corrugated sleeve.

[0026] Legend:

[0027] 1. Inner cup body; 2. Outer cup body; 3. First insulation cavity; 4. Insulation sleeve; 5. Second insulation cavity; 6. Cup bottom; 7. Anti-slip texture; 8. Cup rim flare; 9. Third insulation cavity; 10. Identification paper ring; 11. Slit; 12. Folded paper; 101. Biodegradable layer; 102. Base paper layer; 41. Board sleeve; 42. Raised dots; 43. Corrugated sleeve; 44. Protrusion. Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Example 1:

[0031] like Figure 1-3 As shown, the present invention provides an environmentally friendly plastic-free paper cup, comprising an inner cup body 1 and an outer cup body 2. The inner cup body 1 is disposed inside the outer cup body 2, and the inner cup body 1 and the outer cup body 2 are adapted to each other. A first heat-insulating cavity 3 is formed between the inner cup body 1 and the outer cup body 2. A heat-insulating sleeve 4 is sleeved on the outside of the outer cup body 2, and a second heat-insulating cavity 5 is formed between the heat-insulating sleeve 4 and the outer cup body 2.

[0032] In the technical solution of this utility model, a first heat insulation cavity 3 is naturally formed between the inner cup 1 and the outer cup 2. The air in this cavity can effectively slow down the speed at which heat is transferred from the inner cup 1 to the outside, thus initially achieving heat insulation. A heat insulation sleeve 4 is also fitted on the outside of the outer cup 2, and a second heat insulation cavity 5 is formed between the heat insulation sleeve 4 and the outer cup 2, thus forming a double air heat insulation barrier, which significantly improves the user experience and application scenario adaptability.

[0033] Specifically, the heat insulation sleeve 4 includes a plate sleeve 41, the two ends of which are glued to the outer cup body 2. A second heat insulation cavity 5 is formed between the plate sleeve 41 and the outer cup body 2. The outer side of the plate sleeve 41 is provided with protrusions 42. The heat insulation sleeve 4 is composed of a plate sleeve 41, and the protrusions 42 are evenly distributed on the outer side, which increases the friction when the hand is holding it and reduces the contact area between the palm and the cup body, thereby indirectly reducing the heat transfer efficiency.

[0034] The heat insulation sleeve 4 is located in the upper part of the outer cup body 2. The inner diameters of both the inner cup body 1 and the outer cup body 2 gradually decrease from top to bottom. The gradual decrease in the inner diameters of both the inner cup body 1 and the outer cup body 2 conforms to ergonomic design and makes it easy to hold.

[0035] like Figure 1 and Figure 2 As shown, the bottom of the outer cup body 2 is connected to the cup bottom 6, and the bottom of the cup bottom 6 is provided with anti-slip texture 7. The connecting ends of the inner cup body 1 and the outer cup body 2 away from the cup bottom 6 extend outward to form the cup mouth flange 8. The anti-slip texture 7 at the bottom of the cup bottom 6 can prevent the paper cup from slipping when placed. The cup mouth flange 8 formed by the outward extension of the end of the inner cup body 1 and the outer cup body 2 away from the cup bottom not only enhances the structural stability of the cup mouth, but also makes it easier for users to hold.

[0036] like Figure 1 and Figure 2 As shown, the middle of the outer bottom surface of the inner cup 1 is concave inward to form a third heat-insulating cavity 9 with the middle of the inner bottom surface of the outer cup 2. By the concave inward of the middle of the outer bottom surface of the inner cup 1 and the middle of the inner bottom surface of the outer cup 2 to form a third heat-insulating cavity 9, the heat insulation of the cup bottom 6 is optimized. This cavity effectively blocks heat from being directly conducted downward through the center of the cup bottom, further reducing the heat conduction of the cup bottom.

[0037] like Figure 3 and Figure 4As shown, an identification paper ring 10 is provided on the outside of the heat insulation sleeve 4. The upper part of the identification paper ring 10 is glued to the heat insulation sleeve 4, and multiple slits 11 are equally spaced on the lower part of the identification paper ring 10. Folded paper 12 is formed between adjacent slits 11. With the identification paper ring 10 on the outside of the heat insulation sleeve 4 and the folded paper 12 formed between adjacent slits 11, users can mark these paper sheets by folding them, which makes it easy to distinguish different paper cups and avoids confusion. The structure is simple.

[0038] like Figure 1 and Figure 2 As shown, the inner cup body 1 includes a biodegradable layer 101 and a base paper layer 102, and the outer cup body 2 has the same structure as the inner cup body 1. Both the inner cup body 1 and the outer cup body 2 adopt a composite structure of biodegradable layer 101 and base paper layer 102. The outer cup body 2 has the same structure as the inner cup body 1, which ensures biodegradability and improves the strength of the cup body.

[0039] Example 2:

[0040] like Figure 6 and Figure 7 As shown, the heat insulation sleeve 4 includes a corrugated sleeve 43, which is bonded to the outer cup body 2 via a protrusion 44. A second heat insulation cavity 5 is formed between the protrusion 44 and the outer cup body 2. By using a corrugated sleeve 43, the corrugated structure of the heat insulation sleeve 4 not only increases the elasticity and cushioning of the heat insulation sleeve 4, but also creates more air retention areas in the cavity. The low thermal conductivity of air blocks heat transfer, and the pleated structure increases the friction when the hand is holding the cup, while maintaining the paper cup's lightweight and environmental friendliness.

[0041] Specifically, the protrusions 44 on the corrugated sleeve 43 can be pressed to flatten them. Users can mark the number of these protrusions 44 by pressing them flat, making it easier to distinguish different paper cups and avoid confusion.

[0042] Working principle: A first heat insulation cavity 3 is naturally formed between the inner cup 1 and the outer cup 2. The air in this cavity can effectively slow down the speed at which heat is transferred from the inner cup 1 to the outside, thus initially achieving heat insulation. A heat insulation sleeve 4 is also fitted on the outside of the outer cup 2, and a second heat insulation cavity 5 is formed between the heat insulation sleeve 4 and the outer cup 2, forming a double air heat insulation barrier, which significantly improves the user experience and application scenario adaptability.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An environmentally friendly, plastic-free paper cup, characterized in that, It includes an inner cup body (1) and an outer cup body (2), wherein the inner cup body (1) is disposed inside the outer cup body (2), the inner cup body (1) and the outer cup body (2) are adapted to each other, and a first heat-insulating cavity (3) is formed between the inner cup body (1) and the outer cup body (2); The outer cup body (2) is covered with a heat insulation sleeve (4), and a second heat insulation cavity (5) is formed between the heat insulation sleeve (4) and the outer cup body (2).

2. The environmentally friendly plastic-free paper cup according to claim 1, characterized in that: The bottom of the outer cup body (2) is connected to the cup bottom (6), and the bottom of the cup bottom (6) is provided with anti-slip texture (7).

3. The environmentally friendly plastic-free paper cup according to claim 2, characterized in that: The connecting ends of the inner cup body (1) and the outer cup body (2) that are far from the bottom of the cup (6) extend outward to form a cup rim flange (8).

4. The environmentally friendly plastic-free paper cup according to claim 1, characterized in that: The inner cup (1) is concave in the middle of its outer bottom surface, forming a third heat-insulating cavity (9) with the middle of the inner bottom surface of the outer cup (2).

5. The environmentally friendly plastic-free paper cup according to claim 1, characterized in that: The heat insulation sleeve (4) includes a plate sleeve (41), the two ends of which are glued to the outer cup body (2), a second heat insulation cavity (5) is formed between the plate sleeve (41) and the outer cup body (2), and protrusions (42) are provided on the outer side of the plate sleeve (41).

6. The environmentally friendly plastic-free paper cup according to claim 5, characterized in that: The heat insulation sleeve (4) is provided with an identification paper ring (10) on the outside. The upper part of the identification paper ring (10) is glued to the heat insulation sleeve (4). The lower part of the identification paper ring (10) is provided with multiple slits (11) at equal intervals, and folded paper (12) is formed between adjacent slits (11).

7. The environmentally friendly plastic-free paper cup according to claim 1, characterized in that: The heat insulation sleeve (4) includes a corrugated sleeve (43), which is bonded to the outer cup body (2) by a protrusion (44), and a second heat insulation cavity (5) is formed between the protrusion (44) and the outer cup body (2).

8. The environmentally friendly plastic-free paper cup according to claim 1, characterized in that: The inner cup body (1) includes a biodegradable layer (101) and a base paper layer (102), and the outer cup body (2) has the same structure as the inner cup body (1).

9. The environmentally friendly plastic-free paper cup according to claim 1, characterized in that: The heat insulation sleeve (4) is located in the upper part of the outer cup body (2).

10. The environmentally friendly plastic-free paper cup according to claim 1, characterized in that: The inner diameters of both the inner cup (1) and the outer cup (2) gradually decrease from top to bottom.

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