Floc having a radiated cooling supercooling feeling
The innovative flock design with radiant refrigeration and heat storage layers addresses the limitations of conventional polyester fiber balls by ensuring consistent radiant refrigeration and heat management through layered structure and particle enhancements.
Patent Information
- Application Number
- JP2025001518U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2025-04-25
- Filing Date
- 2025-05-14
- Publication Date
- 2025-07-10
- Estimated Expiration
- 2035-05-14
AI Technical Summary
Conventional polyester fiber balls used as filling materials in fabrics exhibit a low radiant refrigeration effect due to uniform structure, and existing radiant refrigeration structures face issues with delamination and insufficient heat accumulation, leading to reduced performance over time.
A flock composed of repeating units, including a radiant refrigeration layer, mesh heat storage layer, and solidification heat conduction layer, with specific particle additions and layer thickness ratios, enhances heat transfer and bonding, ensuring consistent radiant refrigeration performance.
The design improves radiant refrigeration efficiency by maintaining high radiant power at high temperatures and heat absorption at low temperatures, with enhanced structural integrity and heat management capabilities.
Smart Images
Figure 0003251940000001_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of filled fabrics, and particularly to flocks having a radiant refrigeration and supercooling feeling.
Background Art
[0002] Radiant refrigeration is to achieve the purpose of cooling by radiating the heat in an object to a cooling source in the form of electromagnetic waves, and its main advantage is that there is no need to input other forms of energy. At normal environmental temperatures, a blackbody radiator emits infrared rays of 8 - 13μm. In order to achieve the purpose of refrigeration, the energy in this part can be radiated to a cold source. For objects on the earth's surface, outer space can be regarded as a natural transparent window of 8 - 13μm. Radiant refrigeration utilizes this window to radiate heat into outer space, which is energy - saving and pollution - free.
[0003] By adding a radiant refrigeration material to fibers to make a fabric, the fabric can be given the ability of radiant refrigeration. Polyester fiber balls are ball - shaped fiber aggregates formed by short fibers being kneaded by a carding machine. Also, the aggregate of polyester fiber balls is used as a filling material and is filled into fabrics such as clothing, household textiles, and toys. As an aggregate of filling materials, polyester fiber balls generally play a role in heat preservation, and have the advantages of being thin, light, and fluffy. When a radiant refrigeration material is added to polyester fiber balls, it has the function of radiant refrigeration when the temperature is high and the function of heat preservation when the temperature is low. However, as a filling material, due to the uniformity of the overall structure, the radiant refrigeration effect of polyester fiber balls is not ideal.
[0004] Chinese Patent CN210602331U discloses a radiation refrigeration structure. In this structure, the radiation refrigeration layer has a first surface with undulations, which is beneficial for increasing the surface area of radiation refrigeration and enhancing the radiation refrigeration effect per unit area. However, this radiation refrigeration structure also has the above problems and cannot accumulate heat sufficiently, so the upper limit of radiation power is low. In addition, in this radiation refrigeration structure, there is a problem that the contact between interfaces of each layer is not firm. After long-term use, delamination between layers may occur, and the radiation refrigeration effect may decrease or disappear.
Summary of the Invention
Problems to be Solved by the Invention
[0005] In view of the problem of the low radiation refrigeration effect of conventional ball cotton, this utility model provides a flock with a radiation refrigeration supercooling feeling. The flock is composed of at least one set of repeating units. The repeating unit consists of a radiation refrigeration layer and a mesh heat storage layer that are respectively connected by a solidification heat conduction layer from top to bottom. The radiation refrigeration layer is formed by overlapping fiber filaments, and the mesh heat storage layer is a network structure woven with fiber filaments.
[0006] Furthermore, the flock with a radiation refrigeration supercooling feeling of this utility model is composed of 1 to 4 sets of repeating units. In the repeating units of each layer, the independent thickness ratio of the radiation refrigeration layer to the mesh heat storage layer is 1:(0.8 - 1.2).
[0007] Specifically, the fiber materials of the radiation refrigeration layer and the mesh heat storage layer are each one of PE, PP, PA6, PA66 or PET. The material of the solidification heat conduction layer is low melting point polyester, EVA, or acrylic emulsion adhesive. In addition, radiation refrigeration particles are added to the fibers of the radiation refrigeration layer, heat conduction particles are added to the solidification heat conduction layer, and heat absorption particles are added to the fibers of the mesh heat storage layer.
[0008] Furthermore, the radiative cooling particles are one or more combinations of SiO2, SiC, TiO2, ZnO, ZnS, BaSO4, AI2O3, and BN; the heat conduction particles are one or more combinations of aluminum powder, copper powder, silver powder, graphite powder, and short carbon fiber; and the endothermic particles are one or more combinations of ATO, GTO, ITO, graphene, carbon nanotube, iron oxide, and polyimide. Also, from the topmost repeating unit downward, the content of the radiative cooling particles in the radiative cooling layer gradually decreases, and the content of the endothermic particles in the mesh heat storage layer gradually increases.
[0009] The beneficial effects of this utility model are as follows. The mesh heat storage layer of the flock with radiative cooling and supercooling sensation enhances the strength of the whole flock and plays a better supporting role as a filling material. Meanwhile, the endothermic particles added to the mesh heat storage layer absorb and store heat, supply sufficient heat to the radiative cooling layer, and ensure a high radiative power at all times, thus realizing the effect of radiative cooling at high temperatures. The solidification heat conduction layer not only increases the bonding force between the radiative cooling layer and the mesh heat storage layer, but also the heat conduction particles added therein can accelerate the heat transfer and further enhance the effect of radiative cooling. Also, when there are multiple sets of repeating units, the design that from the inside to the outside, the content of the radiative cooling particles in the radiative cooling layer gradually increases and the content of the endothermic particles in the mesh heat storage layer gradually decreases can realize the heat transfer driving force from bottom to top, quickly and efficiently collect heat in the outermost radiative cooling layer, and improve the radiative efficiency. When the temperature is low, the radiative cooling layer loses the power to radiate heat to the outside, and through the combined action of the endothermic particles in the mesh heat storage layer and the heat conduction particles in the solidification heat conduction layer, the flock becomes capable of absorbing, storing, and maintaining heat.
[0010] The flock of this utility model can be used in outdoor or sunshade fields, such as the lining on the surface of curtains, tents, and jackets, and can achieve radiative cooling at high temperatures and heat absorption and heat preservation at low temperatures. In addition, the flock of this utility model can also be used in bedding such as the lining of futons. When the temperature inside is high and the temperature difference from the room temperature becomes large, the heat dissipation and refrigeration layer dissipates heat into the room, and a certain cooling effect can be achieved.
Brief Description of the Drawings
[0011]
Figure 1
Figure 2
Modes for Carrying Out the Invention
[0012] Hereinafter, the present utility model will be described using embodiments. However, the embodiments are only used to explain the present utility model and do not limit the scope of the present utility model. Embodiment 1: It is a flock having a radiative refrigeration supercooling sensation. As shown in FIG. 1, the flock consists of two sets of repeating units. Each set of repeating units is, from top to bottom, a radiative refrigeration layer 1 and a mesh heat storage layer 3 respectively, and the two are connected by a solidification heat conduction layer 2. The radiative refrigeration layer 1 is formed by overlapping 40D PE fiber filaments, and the mesh heat storage layer 3 has a network structure woven with 30D PA6 fiber filaments. The solidification heat conduction layer 2 is low-melting polyester, which combines the radiative refrigeration layer 1 and the mesh heat storage layer 3 when melted. Among them, the thickness of the radiative refrigeration layer 1 is 10 mm, and the thickness of the mesh heat storage layer 3 is 8 mm. 2.5 wt% of SiO2 and 2.5 wt% of SiC are added to the outer radiative refrigeration layer 1, and 1.8 wt% of SiO2 and 1.8 wt% of SiC are added to the inner radiative refrigeration layer 1. On the other hand, 2 wt% of ATO, 1.5 wt% of carbon nanotubes, and 1 wt% of iron oxide are added to the outer mesh heat storage layer 3, and 1.5 wt% of ATO, 1.2 wt% of carbon nanotubes, and 0.7 wt% of iron oxide are added to the lower mesh heat storage layer 3. Also, 1 wt% of aluminum powder, 1 wt% of copper powder, and 2 wt% of graphite powder are added to both of the two solidification heat conduction layers 2. Embodiment 2: It is a flock having a radiant refrigeration supercooling feeling. As shown in Figure 2, the flock consists of two sets of repeating units. Each set of repeating units is, from top to bottom, a radiant refrigeration layer 1 and a mesh heat storage layer 3, and the two are connected by a solidification heat conduction layer 2. The radiant refrigeration layer 1 is formed by overlapping 20D PET fiber filaments, and the mesh heat storage layer 3 is a network structure woven with 25D PP fiber filaments. The solidification heat conduction layer 2 is an acrylic emulsion adhesive after solidification, which joins the radiant refrigeration layer 1 and the mesh heat storage layer 3. Among them, the thickness of the radiant refrigeration layer 1 is 5 mm, and the thickness of the mesh heat storage layer 3 is 6 mm. From the topmost to the bottommost, 5 wt% of SiO2, 4 wt% of SiC, 3.2 wt% of TiO2, and 2.6 wt% of ZnO are added to the four layers of the radiant refrigeration layer 1 respectively, and 5.5 wt% of polyimide, 4.6 wt% of GTO, 3.8 wt% of graphene, and 3.2 wt% of iron oxide are added to the four layers of the mesh heat storage layer 3 respectively. Also, 1.5 wt% of aluminum powder, 1 wt% of silver powder, and 1 wt% of 0.05 mm carbon fiber short fibers are added to the four layers of the solidification heat conduction layer 2 respectively.
[0013] The above is only a preferred embodiment of the present utility model and does not limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made under the spirit and principle of the present utility model are all included in the protection scope of the present utility model.
Description of Reference Numerals
[0014] 1. Radiant refrigeration layer; 2. Solidification heat conduction layer; 3. Mesh heat storage layer.
Claims
1. A flock having a radiative refrigeration supercooling sensation, wherein the flock having the radiative refrigeration supercooling sensation is composed of at least one set of repeating units, and the repeating unit includes a radiative refrigeration layer (1) formed by overlapping fiber filaments from top to bottom and a mesh heat storage layer (3) which is a network structure woven with fiber filaments, and the two are connected by a solidification heat conduction layer (2). A flock having a radiative refrigeration supercooling sensation is characterized in that.
2. The flock having a radiative refrigeration supercooling sensation according to Claim 1, wherein the number of sets of the repeating units is 1 to 4.
3. The flock having a radiative refrigeration supercooling sensation according to Claim 2, wherein the thickness ratio of the radiative refrigeration layer (1) to the mesh heat storage layer (3) is 1:(0.8 - 1.2).
4. The flock having a radiative refrigeration supercooling sensation according to any one of Claims 1 to 3, wherein the fiber materials of the radiative refrigeration layer (1) and the mesh heat storage layer (3) are independent of each other and are each one of PE, PP, PA6, PA66 or PET, and the material of the solidification heat conduction layer (2) is a low melting point polyester, EVA or an acrylic emulsion adhesive.
5. The flock having a radiative refrigeration supercooling sensation according to Claim 4, wherein radiative refrigeration particles are added to the fibers of the radiative refrigeration layer (1), heat conduction particles are added to the solidification heat conduction layer (2), and endothermic particles are added to the fibers of the mesh heat storage layer (3).
6. The flock having a radiative refrigeration supercooling sensation according to Claim 5, wherein the content of the radiative refrigeration particles in the radiative refrigeration layer (1) decreases sequentially and the content of the endothermic particles in the mesh heat storage layer (3) increases sequentially from the topmost repeating unit downward.