JP2011078506A - Cool feeling mat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cool feeling mat which maintains the effect of cooling the body forever, is light in weight, is easy to handle and easy to wash, and is usable without feeling stuffiness. <P>SOLUTION: A cooling sheet 4 is formed by laminating nonwoven fabrics 2 and 3 on both surfaces of a heat conductive rubber sheet 1, Then, the cool feeling mat A is formed by covering the cooling sheet 4 with a fabric 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cooling mat used by laying on a mattress, laying on a pillow, or laying on a car seat.

  In summer and the like, a cold sensation mat that cools the body in order to have a comfortable sleep is provided. This cooling sensation mat is made by filling a resin film pack with a gel prepared by absorbing water in a highly water-absorbent resin, and linking the gel-containing pack into a sheet and covering with a cloth cover. Yes (see, for example, Patent Document 1 and Patent Document 2).

  Gel has a large heat capacity because it contains a lot of water. For this reason, for example, when the above-mentioned cooling sensation mat is laid on a mattress, and the body is laid on the bed, the body temperature is absorbed by the gel of the cooling sensation mat, and the body can be cooled. You can sleep comfortably even on hot nights.

JP-A-2005-144036 JP 2009-148455 A

  However, as described above, the gel absorbs body temperature because of its large heat capacity, but it absorbs heat because of its low heat dissipation, and after a predetermined time has passed, the temperature of the gel approaches the body temperature. For this reason, the cooling sensation mat using the gel has a problem that the effect of cooling the body does not last long.

  Further, since the gel contains a lot of water as described above, the specific gravity is high, and the cooling sensation mat using the gel becomes heavy and has a problem in handling when storing and taking out.

  In addition, the pack that fills the gel needs to be formed of a resin film so that water does not leak, so the cooling sensation mat has poor air permeability, and if you sleep on the cooling sensation mat, you may feel stuffiness. There was also a problem.

  In addition, since the cooling mat has a pack filled with gel in a cloth cover, it cannot be washed as it is and cannot be used cleanly.

  The present invention has been made in view of the above points, can maintain the effect of cooling the body forever, is lightweight and easy to handle and can be easily washed, and further used without feeling stuffy An object of the present invention is to provide a cooling sensation mat that can be used.

  The cooling sensation mat according to the present invention is characterized in that a cooling sheet 4 is formed by laminating non-woven fabrics 2 and 3 on both sides of a heat conductive rubber sheet 1, and the cooling sheet 4 is covered with a cloth 5. It is.

  According to this invention, when the body is laid on the cooling sensation mat, the body heat is deprived by the heat conduction of the body to the heat conductive rubber sheet 1 of the cooling sheet 4, and the body can be cooled. is there. The temperature of the heat conductive rubber sheet 1 in the part lying on the body rises with body temperature. However, when the body moves on the cooling mat due to turning over, the heat conductive rubber sheet 1 is moved in the part where the body has moved. Since the body heat is conducted to the heat conductive rubber sheet 1 of this part and the body can be cooled again, the temperature of the heat conductive rubber sheet 1 of the above-mentioned part whose temperature has risen due to the body temperature is low. The heat is released and the temperature drops in a short time. The body can move on the cooling mat, such as turning over, and the effect of cooling the body can be maintained forever.

  The cooling sheet 4 that cools the body is formed by laminating non-woven fabrics 2 and 3 on both sides of the heat conductive rubber sheet 1, and is much lighter than a gel containing a large amount of moisture. Yes, it is easy to handle and can be washed without any problem. Furthermore, the sweat is absorbed by the non-woven fabrics 2 and 3 laminated on the heat conductive rubber sheet 1, so that it can be used without feeling stuffy. Is something that can be done.

  Moreover, in this invention, said heat conductive rubber sheet 1 is what shape | molded the heat conductive rubber composition containing at least one among rubber | gum and a thermoplastic elastomer, and an inorganic filler in the sheet form. It is a feature.

  According to this invention, the heat conductive rubber sheet 1 can be formed as a sheet having high heat conductivity.

  According to the present invention, the body heat is conducted to the heat conductive rubber sheet 1 of the cooling sheet 4 by laying the body on the cooling sensation mat, and the body temperature is taken away from the body and can be cooled. And if you roll over and move your body on the cooling sensation mat, heat will be released from the heat conductive rubber sheet 1 in the part where the temperature has risen, the temperature will drop in a short time, and the effect of cooling the body will be maintained forever Is something that can be done. Further, the cooling sheet 4 formed by laminating the nonwoven fabrics 2 and 3 on both surfaces of the heat conductive rubber sheet 1 is lightweight and easy to handle, and can be easily washed. Since the sweat is absorbed by the No. 3, it can be used without feeling stuffy.

BRIEF DESCRIPTION OF THE DRAWINGS It shows an example of embodiment of this invention, (a) is a perspective view, (b) is the expanded sectional view of the II line part, (c) is the expanded sectional view in which the cooling sheet was partly fractured It is. The fabric of a three-dimensional solid knitted fabric is shown, (a) is the expansion perspective view which fractured | ruptured one part, (b) is one part expanded sectional view.

  Embodiments of the present invention will be described below.

  The cooling sensation mat A according to the present invention is formed by covering both surfaces of a cooling sheet 4 with a cloth 5, and this cooling sheet 4 is formed by laminating nonwoven fabrics 2 and 3 on both surfaces of a heat conductive rubber sheet 1. Is formed.

  The thermally conductive rubber sheet 1 can be prepared by molding a sheet of a thermally conductive rubber composition prepared by blending rubber with an inorganic filler having a high thermal conductivity. It is desirable to have a thermal conductivity of 0.5 W / mK or higher, more preferably 0.7 W / mK or higher, and still more preferably 1.0 W / mK or higher.

  The heat conductive rubber sheet 1 is not particularly limited as long as the heat conductive rubber sheet 1 has such a high heat conductivity. For example, JP-A-10-330575 and JP-A-2001-2001 are not particularly limited. The rubber compositions disclosed in Japanese Patent No. 310984, Japanese Patent Application Laid-Open No. 2006-52273, and Japanese Patent Application Laid-Open No. 2008-266659 can be used.

  That is, acrylic rubber, butyl rubber, ethylene propylene rubber, and thermoplastic elastomer can be used as the rubber as the main component of the rubber composition. As the inorganic filler, aluminum hydroxide, alumina, magnesium oxide, magnesium hydroxide, aluminum nitride, boron nitride, or the like can be used. And by mixing and kneading the inorganic filler in a mass ratio of 50 to 80% by mass with rubber, a rubber composition can be prepared, and by molding this rubber composition into a sheet, The heat conductive rubber sheet 1 used in the present invention can be obtained. If the inorganic filler is less than 50% by mass, it is difficult to obtain a high thermal conductivity. Conversely, if the inorganic filler exceeds 80% by mass, the workability deteriorates and the sheet can be formed into a sheet shape. It becomes difficult.

  Here, when ethylene propylene rubber is used as the rubber, it is necessary to vulcanize when molding the sheet. When a thermoplastic polymer is used as the rubber, the sheet is melt extruded by high temperature heating. It is necessary to form it into a shape. On the other hand, when acrylic rubber is used as the rubber, it can be easily formed into a sheet by calendering, and it is not particularly necessary to vulcanize. Therefore, in the present invention, heat conduction made using acrylic rubber is used. It is preferable to use the conductive rubber sheet 1.

  Although the thickness of the heat conductive rubber sheet 1 is not specifically limited, The range of about 0.15-0.4 mm is preferable. If the thickness is smaller than this range, the heat capacity of the heat conductive rubber sheet 1 becomes small, and the effect of cooling the body may be insufficient. On the other hand, if the thickness exceeds this range, the handling property of the cooling sensation mat A may be deteriorated due to an increase in weight.

  Although it does not specifically limit as the nonwoven fabrics 2 and 3 laminated | stacked on each upper and lower surface of the heat conductive rubber sheet 1, A rayon type nonwoven fabric is preferable. For example, a non-woven fabric of 100% rayon in a ratio of 50 to 100% by mass of rayon and 0 to 50% by mass of polyester, or a non-woven fabric in which rayon and polyester are mixed can be used. The thickness of the nonwoven fabrics 2 and 3 is not particularly limited, but is preferably in the range of 0.1 to 0.3 mm, and is formed by laminating the nonwoven fabrics 2 and 3 on the heat conductive rubber sheet 1. The total thickness of the cooling sheet 4 is preferably in the range of 0.35 to 1.0 mm.

  Thus, by laminating the nonwoven fabrics 2 and 3 on the upper and lower surfaces of the heat conductive rubber sheet 1, the cooling sheet 4 as shown in FIG. 1 (c) can be produced. When the non-woven fabrics 2 and 3 are laminated and bonded to each other, for example, when the heat conductive rubber sheet 1 is formed by calendering the rubber composition as described above, the non-woven fabrics 2 and 2 are formed on both surfaces of the heat conductive rubber sheet 1. If 3 is passed through a roll, the heat conductive rubber sheet 1 can be formed simultaneously.

  The fabric 5 is superimposed on the upper and lower sides of the cooling sheet 4 formed as described above, and the periphery of the fabric 5 is sewn with the sewing thread 11 while being wrapped with the piping cloth 10, and the cooling sheet 4 and the upper and lower fabrics 5 are sewn at the same time. Thus, the cooling sensation mat A having the structure as shown in FIGS. 1A and 1B in which the cooling sheet 4 is covered with the cloth 5 can be produced.

  The fabric 5 covering the cooling sheet 4 is not particularly limited, but the upper fabric 5a is made of cotton so as not to prevent heat conduction to the cooling sheet 4 and heat radiation from the cooling sheet 4. A thin fabric such as a woven fabric is preferable. In particular, xylitol-treated cotton cloth is more preferable because it can give a cool and cool feeling. The lower fabric 5b is preferably formed of a thick three-dimensional solid knitted fabric to give the cooling mat A cushioning and breathability. For example, as shown in FIG. 2, the three-dimensional solid knitted fabric is formed by connecting the upper knitted fabric 12 and the lower knitted fabric 13 of a honeycomb mesh with a monofilament connecting yarn 14. For example, the upper knitted fabric 12 and the lower knitted fabric 13 can be made of polyester or cotton, and the connecting yarn 14 can be made of polyester or nylon. The three-dimensional solid knitted fabric having such a configuration has been proposed in Japanese Patent No. 2847651 and Japanese Patent No. 4001890, and those commercially available as “Fusion” from Asahi Kasei Kogyo Co., Ltd. can be used.

  The cooling sensation mat A of the present invention formed as described above is used to give a cold sensation to the body in summer, for example, laid on a mattress and sleeps on it or on a pillow. It can be used by laying on it and putting its head on it, or laying it on a car seat and sitting on it.

  For example, when the cooling sensation mat A is laid on the mattress as described above and the body is laid down on the bed, the body comes into contact with the cooling sheet 4 of the cooling sensation mat A through the cloth 5. Since the heat conductive sheet 1 of the sheet 4 has high heat conductivity, body heat is deprived by heat conduction of the body to the heat conductive rubber sheet 1, and the body can be cooled. The temperature of the portion of the heat conductive rubber sheet 1 that lies on the body rises due to the absorption of the body temperature, but when turning over on the cooling mat A, the body contacts the heat conductive rubber sheet 1. Since the temperature of the heat conductive rubber sheet 1 is low in the part where the body has moved, the heat of the body conducts heat to the heat conductive rubber sheet 1 at a portion where the temperature is low. This body can cool the body. At the same time, in the portion of the thermally conductive rubber sheet 1 where the body temperature has been absorbed as described above, the body has moved to another location. Heat is dissipated. Since the heat conductive rubber sheet 1 has high heat conductivity, heat dissipation is also good, and the temperature that has risen by absorbing the body temperature decreases in a short time. For this reason, even if the body is turned over again and the body returns to this part, the temperature of this part has already decreased, so that the body can be cooled again. In this way, the effect of cooling the body can be maintained forever by moving on the cooling sensation mat A, for example, in the summer, from nighttime to morning, it is difficult to sleep. It makes it possible to go to bed without feeling the need.

  Further, the cooling sheet 4 that absorbs and cools the body temperature of the body is formed by laminating the nonwoven fabrics 2 and 3 on both sides of the heat conductive rubber sheet 1, so that the body is placed on the cooling sensation mat A. In addition, sweat is absorbed by the non-woven fabrics 2 and 3, and therefore, comfortable use is possible, such as being able to sleep comfortably without feeling stuffy.

  Since the cooling sheet 4 is made of the heat conductive rubber sheet 1 as described above, the cooling sheet 4 does not contain a large amount of water and does not increase in weight unlike the gel forming the conventional cooling mat. A can be formed to be lightweight and thin. For example, when A is folded and stored in a closet or taken out and laid on a mattress, the handling becomes easy and the usability is improved. Further, since the heat conductive rubber sheet 1 constituting the cooling sheet 4 has water resistance, it is not necessary to take out the cooling sheet 4 from the cooling mat A, and the cooling mat A can be washed and washed as it is. It can be done.

  Next, the present invention will be specifically described with reference to examples.

(Example)
Furakawa Electric Co., Ltd. "TM sheet TP-SS" (acrylic rubber, aluminum hydroxide 60 mass% containing) heat conductive rubber sheet 1 having a thickness of 0.2 mm on both sides, rayon 90 mass%, polyester 10 mass % Nonwoven fabrics 2 and 3 were laminated to produce a cooling sheet 4 having a thickness of 0.5 mm (see FIG. 1C).

  A cloth 5a made of cotton cloth processed with shikiritol is laminated on the cooling sheet 4, and a cloth 5b made of a three-dimensional solid knitted fabric (“Fusion AKE64030” manufactured by Asahi Kasei Co., Ltd.) is stacked under the cooling sheet 4, and the surroundings are wrapped with piping cloth 10. Then, a cold sensation mat A having dimensions of 1 m × 1 m and a thickness of 6 mm was produced (see FIGS. 1A and 1B).

(Comparative example)
In the examples, instead of the cooling sheet, a film bag filled with gel was used. The gel is a polyacrylic acid-based superabsorbent resin (“Himo Sub HS-960” manufactured by Hymo Co., Ltd.) having water absorbed in an amount of 99.0% by mass, and 10 cm so that the thickness is about 7 mm. The film was sealed in a x12 cm film bag, and six of the film bags were connected as one sheet, and six sheets were arranged in parallel.

  The weights of the cooling sensation mats of the example and the comparative example were measured. The weight of the example was about 1 kg, whereas the weight of the comparative example was about 4 kg. The weight could be reduced to about / 4.

  Next, a test for placing the cooling sensation mats of Examples and Comparative Examples on a mattress and laying the body on the mat was performed in a room maintained at a room temperature of 28 ° C. and a humidity of 60% RH.

  In the example, when I lay in the same place for 30 minutes, I did not feel the cold feeling I felt at first, but after changing the place to lie down, I turned over again after 5 minutes When I returned to the original position, I felt the same coldness as at the beginning. Even if this rollover was performed several tens of times every 30 minutes, the same coldness as at the beginning could be felt each time the rollover was performed.

  On the other hand, in the comparative example, when lying at the same location for 30 minutes, the coldness felt first was not felt so much. Next, after turning over and changing the place where he lay down, he turned over again and returned to the original position 30 minutes later, and he could hardly feel the coldness at the beginning. No matter how many times you roll over, you never feel the coldness of the first time.

  In addition, in the beginning of August, 10 panelists were asked to go to bed in the homes in Osaka Prefecture by placing the cold feeling mats of the examples and comparative examples on the mattress. As a result, when the cooling sensation mat of the example was used, it was reported that 8 out of 10 people could sleep comfortably, but the cooling sensation mat of the comparative example was used. In some cases, only 3 out of 10 people could report that they were able to sleep comfortably.

  Thus, in the comparative example, once the body temperature was absorbed and the temperature rose, it was no longer possible to cool the body, but in the example, the coldness could be recovered by turning over, so in the summer It has been confirmed that it can cool the body from night to morning and is useful for comfortable sleeping.

DESCRIPTION OF SYMBOLS 1 Thermal conductive rubber sheet 2 Nonwoven fabric 3 Nonwoven fabric 4 Cooling sheet 5 Fabric

Claims (2)

  A cooling sensation mat comprising a non-woven fabric laminated on both sides of a thermally conductive rubber sheet to form a cooling sheet, and the cooling sheet is covered with a cloth.   The heat conductive rubber sheet is a sheet obtained by molding a heat conductive rubber composition containing at least one of rubber and a thermoplastic elastomer and an inorganic filler into a sheet shape. Cold feeling mat.

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