JP2012143967A - Cooling material - Google Patents

Abstract

[PROBLEMS] To provide a cooling material excellent in cooling sensation and sustainability of a cooling effect.
A cooling material for applying a coolant having a laminated structure of two or more layers using a material having a double Russell structure as an outermost layer. And a coolant set in which the coolant and the cooling spray are combined. Further, the coolant set is a gel-type aerosol spray containing the menthyl lactate.
[Selection figure] None

Description

  The present invention relates to a cooling material and a cooling material set in which the cooling material and a cooling spray agent are combined.

  In recent years, the average temperature of the atmosphere tends to increase due to global warming, and it has become more and more difficult to surpass the heat every year, and the number of patients with heat stroke is also increasing. Heat stroke is a dysfunction in which the function of regulating body temperature loses control and the body temperature rises. On the other hand, Cool Biz is encouraged to suppress global warming, but it may not be lightly dressed.

  As products for surpassing such heat, there are known cooling sprays, cooling cosmetics, and the like for locally giving a cooling sensation and temporarily relieving the heat (Patent Documents 1 to 4). . Moreover, the cooling sensation imparting agent for clothing by applying to clothing and making it contact with a body is developed (patent document 5).

JP 2000-239142 A JP 2007-131539 A JP 2002-80335 A Japanese Patent Laid-Open No. 04-103526 JP 2010-84269 A

  However, according to the techniques disclosed in Patent Documents 1 to 4, since it is directly applied to the skin, there are problems such as stickiness and rough skin. Further, there is a problem that when the cooling component flows down due to sweat, or when a volatile cooling component is used, the cooling component is always volatilized at body temperature, and the cooling sensation is not sustained.

  Further, according to the technique disclosed in Patent Document 5, although a cooling sensation effect can be obtained for a certain period of time, it has been difficult to maintain the cooling sensation and cooling effect for a long time.

  Therefore, an object of the present invention is to provide a cooling material excellent in cooling sensation and sustainability of a cooling effect.

  As a result of various intensive studies in view of the above problems, the present inventors have applied a coolant to a cooling material having a laminated structure of two or more layers using a material having a double-Russell structure as the outermost layer. And it discovered that the sustainability of the cooling effect was excellent, and came to complete this invention.

That is, the present invention is as follows.
1. A cooling material for applying a coolant having a laminated structure of two or more layers using a material having a double Russell structure as an outermost layer.
2. 2. The cooling material according to item 1, wherein the cooling agent is a cooling spray agent.
3. 3. The cooling material according to item 2, wherein the cooling spray contains menthyl lactate.
4). 4. The cooling material according to 3 above, wherein the cooling spray is a gel aerosol spray.
5. A coolant set comprising the cooling material according to item 1 and a cooling spray containing lactic acid menthyl.
6). 6. The coolant set according to 5 above, wherein the cooling spray is a gel aerosol spray.

  The cooling material of the present invention can improve the air permeability and elasticity of the cooling material by having a laminated structure of two or more layers using a material having a double Russell structure as the outermost layer. At the same time, the cooling component sprayed from the cooling spray agent can be retained in a large amount in the double raschel structure of the cooling material, and further, the amount of release to the use site is large, so that a high cooling effect is maintained. be able to.

It is a figure which shows the temperature change of the cooling material at the time of applying the cooling spray agent 1 or 2 to the cooling material. It is a figure which shows the temperature change of the cooling material at the time of applying the cooling spray agent 1 to a cooling material. It is a figure which shows the temperature change of the cooling material at the time of applying the cooling spray agent 2 to the cooling material.

  In the present specification, the “cooling sensation effect” of the cooling material of the present invention refers to feeling a cool and cool feeling when the cooling material of the present invention is brought into contact with the body. In addition, the “cooling effect” of the cooling material of the present invention refers to lowering the temperature of the part in contact with the cooling material.

(Cooling material)
The cooling material of the present invention is a material for which a cooling agent is applied in advance and then fixed to the intended use site to provide a cooling effect. The cooling material of the present invention has a laminated structure of two or more layers using a material having a double Russell structure as the outermost layer.

1) Layer having a double Russell structure As a surface to which the cooling spray agent is applied in the cooling material of the present invention, a material having a double Russell structure is used from the viewpoint of sustainability of cooling effect and air permeability. In this specification, the double raschel structure refers to a three-dimensional knitted fabric having a large number of holes, which is composed of two layers of knitted fabric on the front and back surfaces and a connecting yarn that connects the two layers of knitted fabric.

  By spraying the cooling spray agent on the surface having the double Russell structure, the cooling component can be temporarily held in a large number of holes of the double Russell structure, and a long cooling effect can be obtained. The breathability and elasticity of the can also be improved.

  In addition, by processing the cooling material having a double Russell structure into a bag shape and the like and adding a cooling agent, it is possible to obtain an effect that an appropriate cooling feeling can be obtained without being overcooled.

Examples of the structure of the surface of the material having a double Russell structure include a mesh and a smooth structure. Area of the holes in the structure of the surface is preferably 1～80Mm ^2, more preferably 3 to 10 mm ^2. The inner diameter of the hole in the surface structure is preferably 0.5 to 10 mm, more preferably 1 to 5 mm. By setting the area and inner diameter of the pores within this range, a large amount of the cooling component sprayed from the cooling spray agent can be retained, and the amount released to the site of use is also large, so the cooling sensation effect lasts for a long time. be able to. Moreover, since the cooling component sprayed from the cooling spray agent does not drip onto the body, there is no uncomfortable feeling during use.

  Examples of the material constituting the surface include polyester. In addition, you may mix | blend synthetic fiber, a chemical fiber, and a natural fiber suitably.

  As the structure of the back surface of the material having a double Russell structure, a mesh structure and a smooth structure can be cited as with the surface. Examples of the material constituting the back surface include polyester. In addition, you may mix | blend synthetic fiber, a chemical fiber, and a natural fiber suitably.

  Examples of the structure of the connecting portion between the front surface and the back surface include a strut structure, a cross structure, and a truss structure. A monofilament is preferable as the yarn used for the connecting portion. Moreover, as a material which comprises a connection part, polyester is mentioned, for example. In addition, you may mix | blend synthetic fiber, a chemical fiber, and a natural fiber suitably.

  The thickness of the material having a double Russell structure is preferably 1 to 10 mm, more preferably 2 to 5 mm, from the viewpoint of flexibility.

The air permeability of the material having a double Russell structure is preferably 50 to 500 cc / cm ² / second, and more preferably 100 to 300 cc / cm ² / second, from the viewpoint of usability.

The basis weight of the material having a double Russell structure is preferably 100 to 300 g / m ² and more preferably 200 to 250 g / m ² from the viewpoint of usability.

  As the material having a double Russell structure, commercially available materials can be used, and examples thereof include Fusion (manufactured by Asahi Kasei Co., Ltd.) and Tetron (manufactured by Toray Industries, Inc.).

2) Heat insulation layer It is preferable that the cooling material of the present invention includes a heat insulation layer. In the present invention, the “heat insulating layer” refers to a layer made of a heat insulating material containing air, which is difficult to transfer heat from the outside and has an effect of not letting the inside coolness escape.

  As a heat insulating material which comprises a heat insulation layer, a fiber type heat insulating material and a plastic type heat insulating material are mentioned, for example. Among these, a fiber type heat insulating material is preferable from the viewpoint of flexibility.

  The fiber-based heat insulating material can secure a heat insulating effect by holding air in the gaps between fine fibers. Examples of the fiber heat insulating material include polyester nonwoven fabric, glass wool, rock wool, wool heat insulating material, cellulose fiber, and carbonized cork. Among these, a polyester nonwoven fabric is preferable from the viewpoint of cost and repeated use.

  The plastic heat insulating material can exhibit a heat insulating effect due to the heat insulating performance of air confined in the bubble film. Examples of the synthetic resin that is the main component of the plastic heat insulating material include thermosetting resins such as polyester foam, phenolic resin, melamine resin, isocyanurate, urea resin, polyurethane and thermosetting polyimide, and polyethylene, polypropylene, and ethylene. -Thermosetting resins such as vinyl acetate copolymer, polyvinyl chloride, polystyrene, and acrylic resin.

Differs by the material used is basis weight of the heat-insulating material is preferably 30~300g / ^{m 2,} and more preferably 50 to 100 g / ^{m 2.} By setting it as this range, the heat insulation effect and air permeability are favorable.

  The thickness of the heat insulating material is preferably 1 to 10 mm, and more preferably 4 to 6 mm. By setting it within this range, the flexibility is good.

  As the heat insulating material constituting the heat insulating layer, commercially available materials can be used. For example, Biworm (manufactured by Vilene Co., Ltd.), Cranbon (manufactured by Kurashiki Fiber Processing Co., Ltd.), base tap (manufactured by Iwasaki Sangyo Co., Ltd.), etc. Is mentioned.

3) Other layers Examples of materials constituting the other layers include chemical fibers, knits, non-woven fabrics, and woven fabrics. Among these, knit is preferable from the viewpoint of water absorption and quick drying.

  The order of lamination in the cooling material of the present invention is not particularly limited as long as the effects of the present invention are not affected. For example, when the surface that contacts the body is the first layer, the first layer is a layer having a double Russell structure. It is preferable that the second layer is a layer including a heat insulating layer, and the third layer (outside) is a layer having sweat-absorbing quick-drying performance.

  By adopting the configuration exemplified above, when the cooling spray agent is applied to the cooling material, a large amount of cooling components are held in the double Russell structure, and with the heat insulating effect by the heat insulating layer, Sustainability can be obtained. Moreover, when a cold-retaining agent is applied to a cooling material, the effect that it does not become too cold can also be acquired.

  In the cooling material of the present invention, examples of the method of laminating the materials include a method of bonding the materials using an adhesive or a pressure-sensitive adhesive, and a method of sewing after laminating the materials.

  The cooling material of the present invention can be used throughout the body. Examples of the use site include the neck, hand, wrist, arm, forehead, foot, leg, ankle, head, armpit and trunk. Examples of the shape of the cooling material include an ice pillow, a hat, a neck wrap, a sun visor, a wrist band, an ankle band, a head band, an arm cover, and a shirt collar.

  When applying a cooling agent to the cooling material of the present invention, it is preferable to hold the cooling agent between a layer having a double Russell structure and a heat insulating layer. In that case, the cooling material is sewn into a bag shape, It is preferable to attach an open / close slide fastener or the like so that the sealing effect can be maintained for a long time.

(Coolant set)
The cooling material and the cooling spray agent of the present invention can be combined to form a cooling material set. By making the cooling spray used for the coolant set into a cooling spray containing lactic acid menthyl, more preferably a gel aerosol spray, the sustainability of the excellent cooling effect can be improved. Moreover, it is preferable that the cooling material used for the coolant set is made of a material having a double Russell structure as the outermost layer and further includes a heat insulating layer from the viewpoint of maintaining the cooling effect for a long time.

(Cooling agent)
In the present invention, a material having a cooling or cooling function is referred to as a “cooling agent”. The cooling material of the present invention is for applying a coolant. Examples of the cooling agent used in the present invention include a cooling spray agent and a cooling agent, but a cooling spray agent is preferable from the viewpoint of simplicity during use.

1) Cooling spray agent The cooling spray agent used in the present invention is applied to the cooling material by spraying. The cooling spray of the present invention preferably contains menthyl lactate and further contains menthol, ethanol, water and a thickener.

  Lactic acid menthyl is blended in the cooling spray to give a cooling sensation. The content of menthyl lactate in the cooling spray is preferably 0.2 to 1.0% by mass and more preferably 0.5 to 0.8% by mass from the viewpoint of sustainability of the cooling sensation effect. preferable.

  Menthol is blended into the cooling spray to give a cooling sensation. The content of menthol in the cooling spray is preferably from 0.1 to 2.0% by mass, more preferably from 0.5 to 1.0% by mass, from the viewpoint of immediate effect of the cooling sensation effect. .

  Examples of menthol include isolated 1-menthol, d-menthol, and dl menthol. Among these, l-menthol is preferable.

  The blending ratio of menthol lactyl and menthol is, for example, preferably 0.1 to 2.0 parts by weight, and 0.5 to 1.0 parts by weight of menthol with respect to 1 part by weight of lactate menthyl. Is more preferable.

  Ethanol is blended in the cooling spray as a solvent. The content of ethanol in the cooling spray is preferably 5.0 to 46.0% by mass and more preferably 15.0 to 25.0% by mass from the viewpoints of stability and cooling effect. . It is preferable to use ethanol having a purity of 95% or more.

  Water is blended in the cooling spray as a solvent. From the viewpoint of stability, the content of water in the cooling spray is preferably 50.0 to 91.0% by mass, and more preferably 70.0 to 80.0% by mass.

  Examples of the thickener include carboxyvinyl polymer, acrylate copolymer, hydroxyethyl cellulose and xanthan gum. The content of the thickener in the cooling spray is preferably 0.1 to 1.0% by mass, and preferably 0.25 to 0.65% by mass from the viewpoint of cooling effect and discharge property sustainability. It is more preferable.

  In addition to the above components, the cooling spray agent can be appropriately mixed with components that do not adversely affect the body. Other ingredients to be blended into the cooling spray include humectants, surfactants, viscosity modifiers, preservatives, chelating agents, oily ingredients, higher alcohols, natural and synthetic polymers, UV absorbers, various extracts, inorganic And organic pigments, inorganic and organic clay minerals, inorganic and organic pigments treated with metal soaps or silicones, colorants such as organic dyes, preservatives, antioxidants, pigments, pH adjusters, fragrances, cooling agents Antiperspirants, bactericides, cationic metal ions, deodorizers and disinfectants.

  The cooling spray is obtained by mixing a predetermined amount of each of the above components. The mixing method is not particularly limited, and a conventionally known method can be employed.

  Although the kind of cooling spray agent will not be specifically limited if it is a dosage form which can be spray-applied to the cooling material of this invention, From a viewpoint of a cooling effect, it is preferable that it is an aerosol spray. Further, aerosol sprays are classified into liquid, ice and gel types depending on the discharge properties of the contents. Gel aerosol sprays are most preferred for application to the cooling material of the present invention. By using a gel aerosol spray, the amount of cooling component retained in the double raschel structure is increased when applied to the surface having the double raschel structure as compared to liquid and ice-like ones. And the sustainability of the excellent cooling effect can be obtained.

  The gel aerosol spray can be obtained by sealing and filling a gel-like stock solution containing menthyl lactate and a propellant in a pressure resistant container. As the propellant, dimethyl ether is preferable. Dimethyl ether may be used alone, or dimethyl ether may be used in combination with other propellants such as liquefied natural gas, carbon dioxide gas and Freon gas.

  The mixing and filling ratio of the gel stock solution and the propellant is preferably stock solution / propellant = 90/10 to 10/90 (mass ratio), more preferably 80/20 to 50/50, 60 / 40 is particularly preferable.

  The viscosity of the gel stock solution is preferably 5000 to 45000 cp (centipoise), more preferably 10,000 to 30000 cp. By setting the viscosity of the gel stock solution within the above range, a large amount is retained in the double raschel structure of the cooling material of the present invention, and the cooling effect is maintained for a long time.

  The cooling spray agent can impart a cooling sensation by spraying an appropriate amount onto the surface in contact with the body of the cooling material of the present invention so that the cooling component is maintained on the surface for a certain period of time and contacting the body. Is. As a specific spray amount, for example, 2.0 to 17.0 g / 5 seconds is preferable, and 3.5 to 11.5 g / 5 seconds is more preferable.

2) Coolant The cooler used in the present invention includes water, antifreeze, gelling agent, preservative and the like, which are filled in a container or a bag and frozen in a freezer before use. The present invention is applied to the cooling material of the present invention and used for cold storage. Here, examples of the antifreeze include propylene glycol, glycerin, and ethanol. Examples of the gelling agent include sodium polyacrylate, carboxymethyl cellulose, gelatin and the like. Examples of the preservative include sodium benzoate, chlorine dioxide, and sodium dehydroacetate. In addition, as a cryogen, what is marketed can be used as it is or processed.

<Production Example 1: Production of Cooling Material (Double Russell / Knit)>
Two layers of cooling made of polyester double russell (* 1, trade name: Tetoron FT7200, manufactured by Toray Industries, Inc.) and polyester knit (trade name: SOFREC Mr. Caregiver MR-888, manufactured by Asahi Kasei Co., Ltd.) A material (7 cm × 25 cm) was prepared.

<Production Example 2: Production of cooling material (double raschel / heat insulation / knit)>
Double raschel made of polyester (* 1, trade name: Tetoron FT7200, manufactured by Toray Industries, Inc.), non-woven fabric made of polyester (trade name: Biworm YNE-80, manufactured by Vileen Co., Ltd.) and polyester knit (trade name: SOFREC) A three-layer cooling material (7 cm × 25 cm) superposed in the order of Mr. Caregiver MR-888, manufactured by Asahi Kasei Co., Ltd. was prepared.

* 1 ... The following standards are used. Inner diameter of use hole: 2 mm, thickness: 1.5 mm, basis weight: 230 g / m ²

<Production Example 3: Production of cooling material (knit / knit)>
Two layers of a knit made of polyester (trade name: SOFREC Mr. Caregiver MR-888, manufactured by Asahi Kasei Co., Ltd.) were overlapped to create a two-layer cooling material (7 cm × 25 cm).

<Production Example 4: Production of cooling spray 1>
After preparing a stock solution having the formulation shown in Table 1, a gel-type cooling spray 1 was produced by filling the pressure-resistant container with 60% by mass of the stock solution and 40% by mass of dimethyl ether (propellant).

<Test Example 1>
About the cooling material obtained in Production Examples 1 and 3, the gel-type cooling spray agent 1 obtained in Production Example 4 and the commercially available ice-like cooling spray agent 2 (trade name: Everywhere Ice Non EX Sherbet Spray, Component: LPG, Using water, PPG-8 ceteth-20, talc, phenoxyethanol, hydroxyethyl cellulose, manufactured by Shiramoto Co., Ltd.), the amount of cooling component released from each cooling material was measured by the following method.

  After spraying the cooling spray 1 to each cooling material (the cooling material in Production Example 1 is the double Russell side) for about 1 second, the sprayed portion is pressed against an electronic balance (model: BJ610, manufactured by Sartorius Co., Ltd.) for about 3 seconds. The amount attached to the electronic balance was measured. The results are shown in Table 2.

  Similarly, after spraying the cooling spray agent 2 to each cooling material (the cooling material in Production Example 1 is a double raschel side) for about 2 seconds, the sprayed portion is applied to an electronic balance (model: BJ610, manufactured by Sartorius Co., Ltd.). The amount adhered to the electronic balance by pressing for 10 seconds was measured. The results are shown in Table 3.

  From the results shown in Tables 2 and 3, it was found that the cooling material of Production Example 1 having a double Russell structure can release more cooling components than the cooling material of Production Example 3 using a knit material. It was also found that the gel-type cooling spray was retained in the cooling material more than the ice-type cooling spray.

<Test Example 2>
About the cooling material obtained by manufacture example 1 and 3, the usability | use_condition during mounting | wearing was evaluated. The results are shown in Table 4.

Evaluation criteria when cooling spray is applied:
Feels a cool feeling ... 5 points Feels a cool feeling ... 4 points Feels a little cool ... 3 points Almost does not feel a cool feeling ... 2 points Does not feel a cool feeling at all ... Evaluation criteria when one-point cryogen is applied:
I feel a pleasant sensation of cold ... 1 point No sensation of cold at all ... 0 points I feel too cold ... -1 point

  As shown in Table 4, when the cooling spray agent is applied, the cooling material of Production Example 1 including the double Russell layer is more durable than the cooling material of Production Example 3 including no double Russell layer. It turned out to be expensive. Further, it was found that the cooling spray agent 1 containing lactic acid menthyl has higher cooling effect sustainability than the cooling spray agent 2 not containing lactic acid menthyl. In addition, it was also found that when the cold insulator was applied, the cooling material of Production Example 1 including a double Russell layer was not too cold compared to the cooling material of Production Example 3 not including a double Russell layer.

<Test Example 3>
About the cooling material obtained by manufacture example 1 and 2, the sustainability of the cooling effect was confirmed with the following method.

i) When a cooling spray is applied to the cooling material The knit surface of the cooling material obtained in Production Examples 1 and 2 is attached to one side of a vertically fixed cardboard, and the cooling material obtained in Production Example 4 on the double raschel surface. Gel type cooling spray agent 1 and commercially available ice-like cooling spray agent 2 (trade name: Ice Non EX Sherbet Spray, manufactured by Hakugen Co., Ltd.) were sprayed for about 1 second.

  After that, using a tabletop ceramic fan heater (manufactured by Nichiei Denki Sangyo Co., Ltd.) from a position 50 cm away from the opposite side where the cooling material is adhered, hot air of 50 ° C. is continuously blown to reduce the temperature rise on the double Russell surface. It measured using the thermal image sensor (made by Chino Co., Ltd.). The results are shown in FIGS.

  As shown in FIG. 1, the cooling material having a double Russell structure is more suitable when the cooling spray agent 1 containing menthyl lactate is applied than when the cooling spray agent 2 not containing menthyl lactate is applied. It was found that the cooling effect is highly durable.

Further, as shown in FIGS. 2 and 3, it was found that the durability of the cooling effect is increased by laminating a heat insulating layer in addition to the double Russell structure.

Claims (6)

  A cooling material for applying a coolant having a laminated structure of two or more layers using a material having a double Russell structure as an outermost layer.   The cooling material according to claim 1, wherein the cooling agent is a cooling spray agent.   The cooling material according to claim 2, wherein the cooling spray contains menthyl lactate.   The cooling material according to claim 3, wherein the cooling spray is a gel aerosol spray.   The coolant set which combined the cooling material of Claim 1, and the cooling spray agent containing lactate menthyl. The coolant set according to claim 5, wherein the cooling spray is a gel aerosol spray.

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