A slipper
By adopting a three-dimensional structure for the slipper sole and upper, the problem of disinfection during repeated use of slippers has been solved, achieving easy disinfection and improved comfort, extending service life and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI VANDRA-USHINE REFRIGERATION TECH CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-06-23
AI Technical Summary
Existing slippers are difficult to disinfect thoroughly when used repeatedly, making them prone to bacterial growth, and they have a short lifespan and high maintenance costs.
The sole and upper are constructed using a three-dimensional structure, formed by bonding strip-shaped fibers made from thermoplastic polymer elastomer. There are interconnected gaps between the sole and upper, which is suitable for disinfection and improves comfort and strength.
This enables slippers to be easily disinfected and recycled, improving comfort and lifespan while reducing maintenance costs.
Smart Images

Figure CN224386853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slipper technology, and more specifically, to a slipper. Background Technology
[0002] Slippers are a common type of footwear in daily life. In hotels, tourist resorts, and public bathhouses, slippers are indispensable guest equipment, and their functionality and hygiene safety are always a major concern for users. To meet hygiene needs, disposable slippers are the primary choice. While disposable slippers eliminate the risk of cross-infection, their high consumption per use and questionable environmental performance are issues. On the other hand, if reusable ordinary cloth slippers or soft plastic slippers are used, the absorbent inner layer of the fabric is difficult to thoroughly disinfect and dry during washing. The damp environment easily breeds bacteria and fungi, and repeated washing and disinfection can easily cause deformation and aging, resulting in a short actual lifespan and high maintenance costs. Utility Model Content
[0003] This invention provides a slipper that is easy to disinfect and clean, and can be recycled.
[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:
[0005] A slipper includes a sole and an upper, the upper being connected to the sole, and having an accommodating space between the sole and the upper;
[0006] The sole is a three-dimensional structural layer, which is a layer of a certain thickness formed by extruding strip-shaped fiber filaments made from thermoplastic polymer elastomer and then curling and bonding them together.
[0007] As a further improvement, both the sole and the upper are three-dimensional structural layers. The three-dimensional structural layer of the upper is made of strip-shaped fiber filaments extruded from thermoplastic polymer elastomer, which are curled and bonded to form a layer of a certain thickness.
[0008] The cross-sectional diameter of the strip fiber filaments in the three-dimensional structural layer of the sole is greater than or equal to the cross-sectional diameter of the strip fiber filaments in the three-dimensional structural layer of the upper.
[0009] As a further improvement, the three-dimensional structural layers of the sole and upper have interconnected irregular voids, allowing gas or liquid to flow in from one side of the three-dimensional structural layer and out from the other side.
[0010] As a further improvement, the strip-shaped fiber filaments in the sole are hollow or solid.
[0011] As a further improvement, the cross-sectional diameter of the strip fiber filaments in the sole is 0.1-3.0 mm, and the cross-sectional diameter of the strip fiber filaments in the upper is 0.1-3.0 mm.
[0012] As a further improvement, the thickness of the three-dimensional structure layer on the front side of the sole is less than or equal to the thickness of the three-dimensional structure layer on the rear side of the sole.
[0013] As a further improvement, the thickness of the three-dimensional structural layer of the sole is 3-40 mm.
[0014] As a further improvement, the thickness of the three-dimensional structural layer of the shoe upper is 1-20mm.
[0015] As a further improvement, the edges of the three-dimensional structural layer of the shoe upper are sealed.
[0016] As a further improvement, the gaps in the three-dimensional structural layer of the sole can be filled with foam filler.
[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:
[0018] (1) The slippers of this utility model have a three-dimensional structure in the sole, which is a layer formed by curling and bonding strip-shaped fiber filaments extruded from thermoplastic polymer elastomer as raw material. This makes the sole more flexible and provides better support. The layer formed by curling and bonding strip-shaped fiber filaments has a large number of gaps, which facilitates disinfection and allows for recycling.
[0019] (2) The slippers of this invention have irregularly shaped, interconnected gaps in the three-dimensional structural layers of the sole and upper, allowing gas or liquid to flow in from one side of the three-dimensional structural layer and out from the other. When the slippers are disinfected after use, the slippers have good airflow properties inside and out, and all parts of the slippers can come into contact with the disinfectant, thereby achieving comprehensive disinfection of the slippers.
[0020] (3) The thickness of the three-dimensional structure layer on the front side of the sole of the slippers of this utility model is less than or equal to the thickness of the three-dimensional structure layer on the back side of the sole, thereby improving the comfort of wearing.
[0021] (4) The porosity of the three-dimensional structure layer on the front side of the sole of this utility model is less than that on the back side of the sole. When walking, the sole near the front side will be repeatedly bent, which reduces the porosity on the front side of the sole, improves the structural strength of the front side of the sole, and extends the service life of the slippers. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a slipper;
[0023] Figure 2 This is a three-dimensional structural diagram of a slipper from another angle.
[0024] Label Explanation:
[0025] 1. Shoe sole; 2. Shoe upper. Detailed Implementation
[0026] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.
[0027] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0028] Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.
[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.
[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a slipper, including a sole 1 and an upper 2. The upper 2 is connected to the sole 1, and there is an accommodating space between the sole 1 and the upper 2 for wearing.
[0031] In this embodiment, both the sole 1 and the upper 2 are three-dimensional structural layers. These three-dimensional structural layers are formed by extruding strip-shaped fibers from a thermoplastic polymer elastomer, which are then coiled and bonded to form a layer of a certain thickness. The strip-shaped fibers are extruded using a spinneret and can be made from materials such as POE, PE, TPU, EVA, TPEE, PP, PET, or recycled materials. After extrusion, the strip-shaped fibers are drawn out in water and come into contact with each other, winding and bonding. Finally, they are molded in a mold to obtain the three-dimensional structural layer.
[0032] In other embodiments, the raw materials of the thermoplastic polymer elastomer can be modified, for example by adding bactericides such as cuprous oxide, to achieve a bactericidal effect, such as killing Staphylococcus aureus and Escherichia coli. Aromatherapy materials and traditional Chinese medicine can also be added to create various functional slippers.
[0033] In this embodiment, the thickness of the three-dimensional structure layer of the sole 1 is greater than the thickness of the three-dimensional structure layer of the upper 2, and the cross-sectional diameter of the strip fiber filament in the sole 1 is greater than the cross-sectional diameter of the strip fiber filament in the upper 2.
[0034] In this design, the slippers feature a three-dimensional structural layer formed by curling and bonding strip-shaped fiber filaments extruded from a thermoplastic polymer elastomer. The thickness of the three-dimensional structural layer in the sole 1 is greater than that in the upper 2, and the cross-sectional diameter of the strip-shaped fiber filaments in the sole 1 is larger than that in the upper 2. This results in greater flexibility for the upper 2 and better support for the sole 1. The layered structure formed by curling and bonding the strip-shaped fiber filaments also contains numerous voids, facilitating disinfection and enabling recycling.
[0035] Regarding the gaps in the layered structure, both the sole 1 and the upper 2 have interconnected irregular gaps in their three-dimensional structural layers, allowing gas or liquid to flow in from one side and out from the other. When the slippers are disinfected after use, the good airflow between the inside and outside of the slippers ensures that all parts of the slippers come into contact with the disinfectant, thus achieving thorough disinfection.
[0036] In addition, due to the presence of gaps, the sole 1 has a certain degree of elasticity, making it more comfortable to wear.
[0037] In this embodiment, the strip-shaped fibers in the sole 1 and the upper 2 are solid, resulting in better structural strength of the sole 1. However, in some other embodiments, the strip-shaped fibers in the sole 1 can also be hollow, thereby saving raw materials, reducing raw material costs, and improving the support of the sole 1.
[0038] The edges of the sole 1 can be sealed. For soles 1 with solid strip fibers, sealing the edges makes the edges of sole 1 smoother and avoids burrs. For soles 1 with hollow strip fibers, sealing the edges also seals the strip fibers at the edges, preventing dirt from entering the hollow fibers.
[0039] Preferably, the cross-sectional diameter of the strip-shaped fiber filaments in the sole 1 is 0.1-3.0 mm. More preferably, the cross-sectional diameter of the strip-shaped fiber filaments in the sole 1 is 0.5-2.0 mm. Even more preferably, the cross-sectional diameter of the strip-shaped fiber filaments in the sole 1 is 1-1.5 mm.
[0040] Preferably, the cross-sectional diameter of the strip-shaped fiber filaments in the shoe upper 2 is 0.1-3.0 mm. More preferably, the cross-sectional diameter of the strip-shaped fiber filaments in the shoe upper 2 is 0.5-1.0 mm.
[0041] When slippers are worn, the side in front of the wearer is the front side, and the side behind the wearer is the back side. The thickness of the three-dimensional structural layer on the front side of sole 1 is less than or equal to the thickness of the three-dimensional structural layer on the back side of sole 1, improving wearing comfort. Regarding the method of achieving a thickness that is less than that on the back side of sole 1, one approach is to form it during the process of curling and bonding strip-shaped fiber filaments. Another approach is to form it by extrusion molding after sole 1 is molded. This molding process also makes the porosity of the three-dimensional structural layer on the front side of sole 1 less than that on the back side. Since slippers are repeatedly bent near the front during walking, a lower porosity on the front side of sole 1 increases its structural strength and extends the lifespan of the slippers.
[0042] However, in other cases, the relationship between the porosity of the forefoot three-dimensional structural layer and the rearfoot three-dimensional structural layer of sole 1 is not limited. In some cases, the porosity of the forefoot three-dimensional structural layer of sole 1 can be equal to that of the rearfoot three-dimensional structural layer. In other cases, the porosity of the forefoot three-dimensional structural layer of sole 1 can be greater than that of the rearfoot three-dimensional structural layer.
[0043] In this embodiment, preferably, the porosity of the sole 1 is 70-80%. More preferably, the porosity of the front side of the sole 1 is 60-70% (excluding 70%).
[0044] Furthermore, the thickness of the three-dimensional structural layer of the sole 1 is 3-40 mm. Preferably, the thickness of the three-dimensional structural layer of the sole 1 is 5-20 mm. More preferably, the thickness of the three-dimensional structural layer of the sole 1 is 7-15 mm. More preferably, the thickness of the three-dimensional structural layer of the sole 1 is 8-12 mm.
[0045] It should be noted that when the sole thickness is 30-40mm, the thicker sole provides better breathability, making it suitable for occasions where breathability is a high priority.
[0046] Furthermore, the thickness of the three-dimensional structural layer of the upper 2 is 1-20 mm. Preferably, the thickness of the three-dimensional structural layer of the upper 2 is 5-15 mm.
[0047] As one implementation method, the gaps in the three-dimensional structural layer of the sole 1 can be filled with foam filler. For example, foamed sponge can be used to fill the gaps in the three-dimensional structural layer of the sole 1, allowing the sole 1 to be used in more applications.
[0048] Regarding the edge sealing process of the sole 1, it can be done by hot melting, or by foaming or applying existing adhesive.
[0049] In this solution, the three-dimensional structural layer of the sole 1 and the upper 2 is a layered material formed by curling and bonding strip-shaped fiber filaments extruded from thermoplastic polymer elastomer. The layered material achieves its structural strength through the strip-shaped fiber filaments themselves, while the curling and bonding of the strip-shaped fiber filaments forms a large number of gaps, enabling the slippers to be thoroughly disinfected during the disinfection process.
[0050] It should be noted that in other embodiments, only the three-dimensional structural layer of the sole 1 may be used. The three-dimensional structural layer is a layer formed by curling and bonding strip-shaped fiber filaments extruded from thermoplastic polymer elastomer as raw material.
[0051] The terms “installation,” “setup,” “equipped with,” and “connection” used herein should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0052] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A slipper, characterized by: It includes a sole (1) and an upper (2), the upper (2) being connected to the sole (1), and having an accommodating space between the sole (1) and the upper (2); The sole (1) is a three-dimensional structure layer, which is a strip of fiber filaments extruded from thermoplastic polymer elastomer as raw material, which is curled and bonded to form a layer of a certain thickness.
2. The slipper according to claim 1, characterized in that: The sole (1) and the upper (2) are both three-dimensional structural layers. The three-dimensional structural layer of the upper (2) is a strip of fiber filament extruded from thermoplastic polymer elastomer, which is curled and bonded to form a layer of a certain thickness. The cross-sectional diameter of the strip fiber filaments in the three-dimensional structural layer of the sole (1) is greater than or equal to the cross-sectional diameter of the strip fiber filaments in the three-dimensional structural layer of the upper (2).
3. The slipper according to claim 2, characterized in that: The three-dimensional structural layers of the sole (1) and upper (2) have irregularly interconnected voids, allowing gas or liquid to flow in from one side of the three-dimensional structural layer and out from the other side.
4. The slipper according to claim 3, characterized in that: The strip-shaped fiber filaments in the sole (1) are hollow or solid.
5. The slipper according to claim 3, wherein: The diameter of the cross-section of the strip fiber filament in the sole (1) is 0.1-3.0 mm, and the diameter of the cross-section of the strip fiber filament in the upper (2) is 0.1-3.0 mm.
6. The slipper according to claim 3, wherein: The thickness of the front three-dimensional structure layer of the sole (1) is less than or equal to the thickness of the rear three-dimensional structure layer of the sole (1).
7. The slipper according to claim 3, wherein: The thickness of the three-dimensional structure layer of the sole (1) is 3-40 mm.
8. The slipper according to claim 3, characterized in that: The thickness of the three-dimensional structural layer of the shoe upper (2) is 1-20mm.
9. The slipper according to any one of claims 1 to 8, characterized in that: The edges of the three-dimensional structural layer of the shoe upper (2) are sealed.
10. The slipper according to claim 9, characterized in that: The gaps in the three-dimensional structural layer of the sole (1) can be filled with foam filler.