JP2004267665A - Heat insulating sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating sheet allowing a user to safely use the sheet by keeping warmth not to let the heat dissipate from the user's body without using a medicament causing a skin trouble, and to prevent the sheet from coming-off or slippage when applied to an affected part without requiring a special fixing means. <P>SOLUTION: A surface cloth 2 structured so that hydrophobic synthetic fibers 2a with low heat conductivity appear on the front and ultrafine fibers 2b appear on the rear and a foam body sheet 3 are partially bonded together with an adhesive 5. A lining cloth 4 made of ultrafine fibers is partially bonded to the lower surface of the foam body sheet 3 with the adhesive 5. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat retention sheet used for relieving and treating stiff shoulders, lower back pain, knee and elbow joint pain, muscle pain, coldness, etc. by storing body temperature and keeping it warm. The present invention relates to a heat insulating sheet that is effective for maintaining health by effectively mitigating and treating an affected part by a safe heating effect without a risk of causing heat.
[0002]
[Prior art]
For the treatment of stiff shoulders, lower back pain, joint pain, muscle pain and the like, hyperthermia is generally used to warm the affected area and dilate blood vessels to improve blood flow. One of the long-standing methods of hyperthermia is steaming a towel with steam and applying the steamed towel to an affected area. This is the simplest treatment, but it was difficult to steam the towels to a suitable temperature, and there was a risk of burns due to overheating.
[0003]
Alternatively, a bag (a so-called disposable body warmer) filled with a powdered exothermic agent that generates heat by chemically reacting with air in an air-permeable bag body, and is applied to an affected part by placing it in an outer storage bag. There is. Since it is necessary to constantly supply oxygen during use, there is an annoyance that care must be taken so that the bag body is not sealed by clothes or the like.
[0004]
Further, there is a poultice containing a warming stimulant. The cataplasm is generally composed of a water-soluble polymer compound such as gelatin, polyvinyl alcohol and sodium polyacrylate, a moisturizing component such as glycerin and propylene glycol, an excipient such as kaolin and titanium white, and water. A hot stimulant such as pepper extract, pepper powder, nonylate vanillylamide and the like are blended in a base material, and spread on a support such as a nonwoven fabric.
[0005]
In the case of this poultice, since the base material contains a large amount of water, the application site is cooled by the evaporation of water, which inhibits the blood circulation promoting effect and is not suitable as an effect of warming and treating. . In addition, since this haptic has a weak adhesive force to the skin and is easily rolled up or detached, an auxiliary tape for fixing or the like is required.
[0006]
Therefore, a hot compress having a heat generating agent layer that generates heat by chemically reacting with air or oxygen and a compress layer containing an adhesive has been proposed. (For example, see Patent Documents 1 to 3)
[0007]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 1-297059 [Patent Document 2]
JP-A-2-149772 [Patent Document 3]
JP-A-3-173815
[Problems to be solved by the invention]
However, the above Patent Documents 1 to 3 are composed of a heating agent layer and a compress layer containing an adhesive, and have a large individual difference in sensitivity to the warming stimulant compounded in the compress, Some people are too irritating and do not fit the skin, causing skin damage such as rash, redness, itching, and rash, and may cause low-temperature burns when used for a long time. In particular, the skin of an elderly person is dry, and the same adhesive is used to exert a stronger adhesive force than that of a younger person. As a result, pain may be felt strongly when peeled. In addition, when they are stuck, they often emit odors peculiar to chemical agents and are often avoided.
[0009]
The present invention has been developed with the object of solving the above problems, and can be used with peace of mind simply by keeping the body temperature from escaping without using drugs that cause skin disorders, It is an object of the present invention to provide a heat retaining sheet which has an advantage that it does not require any fixing means and does not come off or move when it is applied to an affected part.
[0010]
[Means for Solving the Problems]
As a means for solving the above problems and achieving the object, in the present invention, a synthetic fabric having a low thermal conductivity in a hydrophobic surface and a cloth and a foam sheet configured so that ultrafine fibers appear on the back surface are provided. And a backing sheet composed of a microfiber backing material partially adhered to the lower surface of the foam sheet with an adhesive was developed and adopted.
[0011]
Further, in the present invention, in the heat insulating sheet configured as described above, the foam sheet is a heat insulating sheet made of a thermoplastic resin foam such as polyethylene, polypropylene, and polystyrene, and the foam sheet is mixed with Bincho charcoal powder. Developed and adopted a heat retaining sheet.
[0012]
Embodiment
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIGS. 1 and 2 show a first embodiment of the present invention, and a heat retaining sheet 1 shown in this embodiment includes: It has a three-layer structure in which the front fabric 2, the foam sheet 3, and the back fabric 4 are joined with an adhesive 5.
[0013]
The above-mentioned surface cloth 2 is a cloth made of a knitted or woven fabric in which synthetic fibers and ultrafine fibers that are hydrophobic and have low thermal conductivity are aligned and knitted. The microfibers 2b are arranged on the back of the synthetic fiber 2a having a low thickness.
[0014]
As the hydrophobic synthetic fiber 2a having a low thermal conductivity, polypropylene having a thermal conductivity of 6.1 and an official moisture content of 0 or polyvinyl chloride having a thermal conductivity of 6.3 and an official moisture content of 0 is preferable. is there. As the ultrafine fiber 2b, a polyester ultrafine fiber or a polyamide ultrafine fiber may be used alone, and it is suitable that both fibers 2a and 2b are aligned and knitted together. Mixed use such as may be used.
[0015]
The surface of the synthetic fiber 2a, which is hydrophobic and has low thermal conductivity, is placed on the skin contact side because when the heat retaining sheet 1 is applied to the affected area, the skin temperature rises and a sweating action occurs. Since the fibers 2a do not absorb sweat, the sweat is absorbed and moved by the extra fine fibers 2b on the back, and the skin contact surface is prevented from being reversely cooled by the sweat.
[0016]
As the foam sheet 3 of the intermediate layer, a material having a heat insulating effect is used, but a synthetic resin foam sheet having a foam structure including an air layer capable of obtaining a higher heat storage and heat retaining effect is preferable. Considering the effects, thermoplastic polyethylene foam sheets and polypropylene foam sheets are suitable. In this case, it is more preferable to use a mixture of Bincho charcoal powder because odors such as sweat can be adsorbed. The mixing amount of the Bincho charcoal powder is optimally about 20% by weight. is there.
[0017]
If the thickness of the foam sheet 3 is too large, it becomes bulky and rough, and it is not suitable because it is poorly familiar when applied to an affected part. Conversely, if the thickness is thin, the skin contact becomes worse and the effect of heat storage and heat retention is good. Therefore, it is in the range of 0.5 to 2.0 mm, preferably 0.8 to 1.5 mm.
[0018]
The back cloth 4 arranged on the lower surface of the foam sheet 3 mainly comes into contact with the undergarment when the outer cloth 2 is applied to the affected part, and is knitted with ultrafine fibers or ultrafine fibers having a high friction coefficient so as not to slip. The ground is suitable, but a woven fabric may be used. Ultra-fine fibers and ultra-fine fibers have different cross-sections, such as a combination of acute cross-sections, unlike ordinary round shapes, and have irregularities on the fiber surface, which increases the coefficient of friction and prevents slippage. .
[0019]
The heat retaining sheet 1 configured as described above is superposed and joined in the order of the front fabric 2, the foam sheet 3, and the back fabric 4. The front fabric 2 and the foam sheet 3, and the foam sheet 3 and the back fabric 4 are joined. Are bonded and integrated with an adhesive 5 partially applied to both sides of the foam sheet 3, and the front fabric 2 and the back fabric 4 are point-bonded to the foam sheet 3, An air layer is formed, and a heat storage and heat retaining effect can be obtained by the air layer.
[0020]
As shown in FIGS. 3 and 4, for example, as shown in FIGS. 3 and 4, the heat retaining sheet 1 configured as described above forms four corners of the front fabric 2, the foam sheet 3, and the back fabric 4 in a round shape. As shown, it is joined with the adhesive 5 and sewn with the edging tape 6, and can be used as a small-sized shoulder pad 7 in which the three members are integrated. In addition, as shown in FIG. 5, a curved portion 8 is formed in the lower central portion of the heat retaining sheet 1 so that the curved portion 8 can be used as a curved surface application pad 9 that follows the curved surface portion of the body. Further, as shown in FIG. 6, narrow elastic belts 10, 10 are attached to both sides of the heat retaining sheet 1, and hook-and-loop pads 12 formed by sewing surface fasteners 11, 11 to respective ends. Can be used as
[0021]
Also, as shown in FIG. 7, a rubber-like band 12 having elasticity is attached to the four corners of the back surface of the long rectangular shape-retaining sheet 1, and the band 12 is placed on a mattress. The band 12 can be used as a pad 13 to be attached to a mattress. Further, as shown in FIG. 8, the heat retaining sheet 1 can be formed in a tubular shape and used as a supporter 14 to be fitted to a knee or an elbow. Further, as shown in FIG. 9, it can be used as a shoulder cover 15 composed of a front cloth 15a and a rear cloth 15b.
[0022]
The use example of the present invention configured as described above will be described together with the function and effect. When used as the shoulder pad 7 for alleviating stiff shoulders and treating the skin, the synthetic fiber 2a side of the hydrophobic, low thermal conductivity surface cloth 2 is exposed to the skin. Hit on the side. When time elapses, the foam sheet 3 prevents the body temperature from being released into the air, stores and keeps the heat in the air layer, raises the temperature of the skin, expands the blood vessels, and further promotes circulation to promote metabolism. It can be expected to reduce muscle tone, and can alleviate and treat stiff shoulders.
[0023]
At this time, since the foam sheet 3 is formed as thin as 0.8 to 1.5 mm, even if the shoulder is moved by moving the hand or the arm, the foam sheet 3 becomes familiar according to the movement and has a good contact feeling. It becomes. Furthermore, even if the skin temperature rises and sweating occurs, the surface that is in contact with the skin is formed of the fiber 2a that is hydrophobic and has low thermal conductivity, so that sweat is not absorbed and the silky state is maintained. The phenomenon of absorption and movement by the ultrafine fiber yarn 2b and the reverse of the skin contact surface being cooled does not occur.
[0024]
The shoulder pad 7 applied to the shoulder does not slip when coming into contact with the cloth of the underwear because the backing cloth 4 is made of an ultrafine fiber having a high coefficient of friction. Nothing.
[0025]
(Example 1)
Further, specific examples of the present invention will be described. Three 120 denier polyvinyl chloride fibers 2a (registered trademark Tevilon manufactured by Teijin Limited) and three polyester ultrafine fibers 2b obtained by tying two 75 deniers are aligned and the polyvinyl chloride fiber 2a is listed in the table. The surface cloth 2 having a size of 1 m × 25 m was knitted by ply yarn so that the polyester microfibers 2 b appeared on the back.
[0026]
On the other hand, a polyethylene foam sheet 3 having a thickness of 0.8 mm is formed in the same size of 1 m × 25 m as the surface cloth 2, and a synthetic rubber adhesive 5 is partially applied on the upper surface of the polyethylene foam sheet 3. Then, it was joined to the surface cloth 2.
[0027]
The backing cloth 4 is formed by tack-knitting three polyester microfibers obtained by twining two 75 denier yarns into a backing cloth, and partially applying a synthetic rubber adhesive 5 to the upper surface of the polyethylene foam sheet 3. Table cloth 2 was joined. The front fabric 1 and the back fabric 4 are spot-bonded to the polyethylene foam sheet 3 at ^{two to} three places per cm ² , and the amount of the adhesive applied at that time is about 0.1 g at one place. .
[0028]
Using the heat retaining sheet 1 obtained in the above embodiment, a shoulder cover 15 as shown in FIG. 9 was formed, and the body temperature around the affected part when wearing it and when not wearing it was measured with an infrared imaging apparatus (Nippon Avionics, Inc.). The measurement was carried out using a thermal video system TVS-500 manufactured by Co., Ltd. At a room temperature of 25 ° C., the points before and after removing the shoulder cover 14 after 5 minutes of wearing were measured.
[0029]
In FIG. 10A of the test result, a portion at 33 ° C. or higher immediately after removal after 5 minutes of wearing is shown by hatching. On the other hand, FIG. 10B shows the portion of 30 ° C. or higher before wearing by hatching, and it can be seen that when the shoulder cover 15 is used, the temperature rise range is expanded.
[0030]
The main embodiments of the present invention have been described above. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Design changes are possible and all are included within the scope of the present invention.
[0031]
【The invention's effect】
As described above, the present invention does not use a drug, and therefore does not cause skin disorders such as rough skin. In addition, since there is no heating element, there is no need to worry about burns, and the temperature is moderate enough to prevent body temperature from escaping. In addition to maintaining good health, even if sweating, the surface cloth on the skin contact surface does not absorb water, so that the reverse cooling phenomenon can be prevented and heat storage and heat retention can be effectively maintained. Further, no special fixing means is required, and the irregularities of the ultrafine fibers do not slip on the undergarment even if they are directly applied to the affected part, so that they do not slip or slip off.
[Brief description of the drawings]
FIG. 1 is a perspective view of a heat retaining sheet of the present invention.
FIG. 2 is an enlarged sectional view taken along line AA of FIG.
FIG. 3 is a front view of a shoulder pad.
FIG. 4 is a sectional view taken along line BB of FIG. 3;
FIG. 5 is a front view of a music piece pad.
FIG. 6 is a front view of a waist pad.
FIG. 7 is a rear view of the spreading pad.
FIG. 8 is a side view of the supporter.
FIG. 9 is a front view of the shoulder cover.
FIG. 10 is a test result diagram of a comparative example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insulation sheet 2 Front fabric 2a Synthetic fiber having hydrophobicity and low thermal conductivity 2b Microfiber 3 Foam sheet 4 Back fabric 5 Adhesive

Claims (3)

Synthetic fibers with hydrophobicity and low thermal conductivity are attached to the surface and the foam sheet, which is configured so that the fine fibers appear on the front and the ultrafine fibers on the back, with an adhesive, and the ultrafine fibers are attached to the lower surface of the foam sheet. Thermal insulation sheet made by partially bonding the backing fabric made of fiber with an adhesive. The heat retaining sheet according to claim 1, wherein the foam sheet is a thermoplastic resin foam such as polyethylene, polypropylene, and polystyrene. The heat retention sheet according to claim 2, wherein a bincho charcoal powder is mixed in the foam sheet.

Images