Long-lasting cooling cotton

Abstract

To provide a continuous cool feeling cotton that can maintain a cool feeling for a long time by arranging it under a surface fabric. [Solution] The sustained cooling cotton 1, which is placed on the underside of the outer fabric 2 and provides a continuous cooling sensation, consists of a base material 3 which is a soft, sheet-like cotton material. A cooling gel applied to the entire surface of the base material 3 penetrates into the interior of the base material 3, forming a cooling gel layer 4. The cooling gel contains a urethane elastomer composite material, a phase change material, and a cooling material to provide a sustained cooling effect. Body heat is transferred from the outer fabric 2 to the sustained cooling cotton 1 on the underside. The heat absorption of the phase change material and the cooling material in the cooling gel suppresses the temperature rise of the upper outer fabric 2, allowing the cooling sensation to be sustained for a long period of time.

Description

[Technical Field]

[0001] This invention relates to a cooling cotton that provides a sustained cooling sensation. [Background technology]

[0002] Patent Document 1 describes a cooling fabric in which a cooling material layer is applied to one or both sides of a woven or nonwoven fabric. The cooling material layer contains microcapsules containing a phase transition substance, a contact cooling material, and an organic binder. When the body comes into contact with the cooling fabric, heat is absorbed by the dissolution of the phase transition substance and by the contact cooling material. Furthermore, since the heat absorbed by the dissolution of the phase transition substance also directly acts on the contact cooling material, the temperature rise of the contact cooling material can be suppressed, and the duration of the cooling sensation can be extended.

[0003] Such cooling fabrics are used as the outer fabric for textile products such as bedding covers, sheets, futons, mattress pads, pillows, rugs, and cushions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6804070 Summary of the Invention [Problem to be solved by the invention]

[0005] Simply forming a cooling material layer on the surface of a nonwoven fabric outer layer is insufficient to sustain the cooling effect over a long period of time. Therefore, the present invention aims to provide a long-lasting cooling cotton that can maintain a cooling effect for an extended period of time by being placed beneath the outer layer containing the cooling fabric. [Means for solving the problem]

[0006] The sustained cooling cotton, which is placed under the outer fabric of the present invention and provides a sustained cooling sensation, is made of a base material made of cotton material formed into a soft sheet, and a cooling gel applied to the entire surface of the base material penetrates into the interior of the base material, forming a cooling gel layer. The sustained cooling cotton is also made of a base material made of solid cotton formed into a hard sheet, and the cooling gel is applied to the entire surface of the base material. The cooling gel contains a urethane elastomer composite material, a phase change material, and a cooling material to provide a sustained cooling effect.

[0007] In the case of rugs, mattress pads, pillow pads, pillows, sofa covers, mats, cushions, comforters, mattresses and other coverings, the surface fabric, cushioning material and lining material are layered in this order, with the cooling fabric being used for the surface fabric and the sustained cooling cotton being used for the cushioning material.

[0008] When the body is placed on the rug, body heat is transferred through the outer fabric to the continuous cooling cotton inside. When the heat is transferred to the cooling gel that permeates the base material, the phase change material and the cooling material absorb heat, providing a cooling sensation and suppressing the temperature rise of the cooling fabric, so that the cooling sensation can be maintained for a long time.

[0009] Base material basis weight: 20-1000 g / m² 2 The cooling gel is applied or sprayed onto the surface of the substrate, and when applying the cooling gel, the amount of application is 5 to 1000 g / m 2 When spraying cooling gel, the spray amount is 5 to 1000 g / m 2 The amount of application or spray can be adjusted according to the level of the effect of sustained cooling sensation, so that the amount of application or spray can be increased when the effect of sustained cooling sensation is to be enhanced. This allows the effect of sustained cooling sensation to be set according to the purpose of use. [Effects of the Invention]

[0010] According to this invention, by permeating the cooling gel into a base material such as cotton or solid cotton, the effect of sustained cooling can be increased compared to when the cooling gel is applied to the surface. By placing this sustained cooling cotton underneath the cooling fabric, the cooling sensation can be sustained for a long time. [Brief explanation of the drawings]

[0011] [Figure 1] Cross-sectional view of a continuous cooling cotton pad made of a small-weight cotton material according to an embodiment of the present invention [Figure 2] Cross-sectional view of a continuous cooling cotton pad made of a large-weight cotton material according to an embodiment of the present invention [Figure 3] Cross-section of a rug made with long-lasting cooling cotton. [Figure 4] Cross-sectional view of a continuous cooling cotton pad using solid cotton of another embodiment DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of the sustained cooling cotton according to the present invention will be described with reference to the drawings. As shown in FIG. 1, sustained cooling cotton 1 is placed under outer fabric 2. Sustained cooling cotton 1 is formed by applying a cooling gel to the entire surface of substrate 3, which is a soft, sheet-like cotton material. The cooling gel penetrates into substrate 3, forming a cooling gel layer 4. The cotton material is made of synthetic fibers such as polyester, nylon, or acrylic, or natural cotton, and is formed into a sheet. In the drawing, reference numeral 5 denotes the lining fabric.

[0013] The cooling gel contains a phase-change material, a cooling material, and a urethane elastomer composite material or polyurethane to provide a sustained cooling effect. The gel is mixed with microcapsules encapsulating the phase-change material and the cooling material. Xanthan gum, agar, pectin, mannan, etc. are used as the gel. The component ratio of the phase-change material and cooling material in the cooling gel is 28% phase-change material and 72% cooling material. The phase-change material can be adjusted between 2 and 98%, and the cooling material is 98 to 2%.

[0014] A phase change material is a substance that changes between a liquid phase and a solid phase depending on the temperature; it is a so-called PCM (Phase Change Material) and a cooling medium. The phase change material cools the object by absorbing heat from the object as latent heat of fusion, changing from a solid phase to a liquid phase. Here, the phase change material solidifies at room temperature. Specifically, the solidification point of the phase change material is set to -15°C to 35°C. Preferably, the solidification point of the phase change material is set to 0°C to 30°C.

[0015] For example, the phase change material includes paraffin or aliphatic hydrocarbon (or aliphatic saturated hydrocarbon). The paraffin or aliphatic hydrocarbon may be tetradecane (C 14 H 30 ), hexadecane (C 16 H 34 ), and octadecane (C 18 H 38 ) The phase change material contains at least one of tetradecane (C 14 H 30 ), hexadecane (C 16 H 34 ), and octadecane (C 18 H 38 The phase change material may include all of the following: In addition, the phase change material may further include, in addition to paraffin or aliphatic hydrocarbons, super absorbent polymer (SAP), water, aroma or graphite, etc. As an example, the phase change material may include paraffin, aliphatic compounds, organic matter and minerals.

[0016] The cooling material is made up of water-absorbing resins such as sodium polyacrylate, menthol, PCM, camphor, etc., and provides a cooling sensation when in contact with the long-lasting cooling cotton.

[0017] The urethane elastomer composite material is a material made by polymerizing polyurethane and diphenylmethane diisocyanate (MDI). It acts as a microencapsulating agent that forms a microcapsule coating of the phase-change material, and by microencapsulating the phase-change material, it exerts a lasting cooling effect.

[0018] The weight of the cotton material as the base material 3 is 10 to 1000 g / m 2 Preferably 60-200 g / m 2 The thickness of the cotton material is set to 1 to 50 mm, and the denier of the cotton material is set to 0.1 to 200 denier.

[0019] The cooling gel is applied to the entire surface of the substrate 3. The method of applying the cooling gel to the entire surface is by coating or spraying. When applying the cooling gel with a roller, the amount of application is 5 to 1000 g / m 2 , preferably 15 to 300 g / m 2 When spraying cooling gel with a spray gun, the amount sprayed should be 5 to 1000 g / m 2 Preferably 15-300 g / m 2 It is said that...

[0020] As shown in Figure 1, when the cotton material has a small basis weight (the base material 3 is thin), the cooling gel applied from the surface of the base material 3 penetrates to the back surface, forming a cooling gel layer 4 over the entire base material. As shown in Figure 2, when the cotton material has a large basis weight (the base material 3 is thick), the cooling gel applied from the surface penetrates to the middle of the base material 3 in the thickness direction, forming a cooling gel layer 4 from the surface to the middle of the base material 3.

[0021] As the cooling gel penetrates, the base material 3 becomes colored. When the gel penetrates to the back, both the front and back surfaces are colored, allowing the sustained cooling cotton 1 to be used regardless of which side is facing up. When the gel has penetrated halfway, the front surface is colored, but the back surface remains the color of the base material 3, making the front surface easily recognizable. Furthermore, the front surface can be recognized by touch, and a sustained cooling sensation is obtained on the front surface. A slight cooling sensation is obtained on the back surface, but the sustained cooling effect is not very noticeable.

[0022] Here, the amount applied or sprayed can be adjusted according to the desired level of sustained cooling effect. Even with the same base weight, if a normal sustained cooling effect is sufficient, for example, 120 g / m² can be used. 2 To enhance the effect of sustained cooling, for example, 150 g / m 2 The amount applied or sprayed is adjusted to be larger. This allows for setting the duration of the cooling effect by adjusting the amount applied or sprayed according to the intended use.

[0023] As shown in Figure 3, the sustained cooling cotton 1 is used as a cushioning material for floor coverings such as rugs 10. The floor covering consists of a surface fabric 2, the sustained cooling cotton 1, and a backing fabric 5. The backing fabric 5 can be a woven or knitted fabric such as a synthetic fiber, natural fiber, or nonwoven fabric. The surface fabric 2 is a cooling fabric and may consist of a fabric with high thermal conductivity such as nylon, rayon, polyethylene, or linen, or it may be a woven or knitted fabric such as a synthetic fiber, natural fiber, or nonwoven fabric that has been treated with a cooling component such as xylitol or menthol.

[0024] The outer edge of the rug 10 is piped 12 and further quilted 13. Bonding may be used instead of quilting 13. Also, the outer edge of the rug 10 is not limited to piping 12; it may be hemmed or bonded and cut without a hem.

[0025] When a person stands on a rug 10, which has a cooling outer fabric 2 with a sustained cooling cotton 1 placed underneath, their body heat is transferred to the outer fabric 2 when their skin touches it. This creates an immediate cooling sensation upon contact. However, with this type of contact cooling alone, the cooling sensation diminishes once the skin and fabric temperatures equalize.

[0026] However, heat is transferred from the upper outer fabric 2 to the sustained cooling pad 1, and the cooling component of the cooling gel absorbs the heat transferred from above. As the cooling gel warms, the phase change material melts and absorbs heat, and the cooling material also absorbs the heat, providing a cooling sensation. The sustained cooling pad 1 diffuses the transferred heat, efficiently suppressing the temperature rise of the cooling gel and maintaining the cooling sensation for a long period of time. In this way, the outer fabric 2 provides instantaneous coolness, while the sustained cooling pad 1 continuously absorbs and dissipates heat, making it difficult for the temperature of the entire rug to rise, making it easier to maintain the cooling sensation and allowing the comfortable cool sensation to last longer.

[0027] Figure 4 shows another embodiment of the sustained cooling cotton 1. The sustained cooling cotton 1, which is placed on the underside of the outer fabric 2, is formed by applying a cooling gel to the entire surface of a base material 3, which is a hard, sheet-like solid cotton. A cooling gel layer 4 is formed on the surface of the base material 3, and the cooling gel penetrates slightly into the interior of the base material 3.

[0028] Solid cotton is made by entangling short fibers, such as polyester, through airflow or mechanical processes to form a random, three-dimensional sheet with no specific orientation. The formed sheet is then either heated to fuse the fibers together (thermal fusion) or sprayed with a binder resin. This fixes the fibers in place, forming a firm, plate-like solid cotton. Solid cotton is dense and stiff, so the body does not sink too much even when weight is applied. The numerous gaps between the fibers provide relatively good breathability. The randomly arranged fibers distribute force evenly in response to loads in a certain direction, making it durable and resistant to sagging. Sustained cooling cotton 1, which uses solid cotton, can be used as cushioning for rugs 10 and other rugs with a surface fabric 2, similar to the sustained cooling cotton 1 described above, resulting in rugs with excellent body pressure distribution.

[0029] The basis weight of the solid cotton used as the base material 3 is 5-1000g / m². 2 Preferably 60-300 g / m 2It is said that the thickness of the solid cotton is 2 to 1000 mm, and the denier of the solid cotton is 3 to 200 denier.

[0030] The cooling gel is applied to the entire surface of the substrate 3. The method of applying the cooling gel to the entire surface is by coating or spraying. When applying the cooling gel with a roller, the amount of application is 5 to 1000 g / m 2 Preferably 15-300 g / m 2 When spraying cooling gel with a spray gun, the amount sprayed should be 5 to 1000 g / m 2 Preferably 15-300 g / m 2 It is said that...

[0031] Furthermore, if the weight of the cotton is small (the thickness of the base material 3 is thin), the cooling gel 4 applied to the surface of the base material 3 will penetrate only slightly. If the weight of the cotton is large (the thickness of the base material 3 is thick), the cooling gel applied to the surface will penetrate only slightly in the thickness direction of the base material 3. The base material 3 will be colored as the cooling gel penetrates.

[0032] By arranging the sustained cooling cotton 1 on the outer fabric 2, particularly on the underside of the cooling fabric, it is possible to exert the effect of maintaining the cooling sensation for a long period of time, similar to the sustained cooling cotton 1 made of cotton material.

[0033] It should be noted that this invention is not limited to the above embodiments, and many modifications and changes can be made to the above embodiments within the scope of this invention. The surface fabric using the sustained cooling cotton 1 is suitable for various types of mats on which the body can rest, such as cushions, mattresses, multi-covers (a single piece of cloth sewn on all four sides), comforters, futons, mattress pads, pillow pads, pillows, and sofa covers. The surface fabric 2 may be an ordinary fabric without cooling properties. Furthermore, the surface fabric 2, which includes a cooling fabric placed on top of the sustained cooling cotton 1, may be a cover, and the sustained cooling cotton 1 is used by covering it with the surface fabric 2. The surface fabric 2 may also be bonded to the surface of the sustained cooling cotton 1 to integrate them. [Explanation of symbols]

[0034] 1. Long-lasting cooling cotton 2. Outer fabric 3 Base material 4. Cooling gel layer 5. Lining 10 rags

Claims

1. The sustained cooling cotton is arranged under the outer fabric and provides a sustained cooling sensation, and is characterized in that it comprises a base material that is a cotton material formed into a soft sheet shape, and the inside of the base material is permeated with a cooling gel that is applied to the entire surface of the base material.

2. 2. The sustained cooling cotton according to claim 1, wherein the outer fabric is a cooling fabric.

3. 3. The sustained cooling cotton according to claim 2, wherein the thickness of the cotton material is 1 to 50 mm and the denier of the cotton material is 0.1 to 200 denier.

4. The sustained cooling cotton is arranged under the outer fabric and provides a sustained cooling sensation, and is characterized in that it is made of a substrate that is solid cotton formed into a hard sheet, and a cooling gel is applied to the entire surface of the substrate.

5. 5. The sustained cooling cotton according to claim 4, wherein the outer fabric is a cooling fabric.

6. 6. The sustained cooling cotton according to claim 5, wherein the thickness of the solid cotton is 2 to 1000 mm and the denier of the solid cotton is 3 to 200 denier.

7. The cooling gel contains a urethane elastomer composite material, a phase change material, and a cooling material to provide a sustained cooling effect, and the weight of the substrate is 10 to 1000 g / m ２ It is said that, The cooling gel is applied or sprayed onto the surface of the substrate. When the cooling gel is applied, the amount of application is 5 to 1000 g / m. ２ When spraying cooling gel, the spray amount is 5 to 1000 g / m ２ The sustained cooling sensation cotton according to any one of claims 1 to 6, characterized in that the amount of application or spraying can be adjusted according to the level of the sustained cooling sensation effect, so that the amount of application or spraying can be increased when the sustained cooling sensation effect is to be enhanced.

8. The sustained cooling cotton according to claim 7, characterized in that the outer fabric is the outer fabric of one of the following rugs: rug, mattress pad, pillow pad, pillow, sofa cover, mat, cushion, comforter, and mattress pad.

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