FAQs about HEATRAY “Warm Stone Pack” are summarized below.
How to use
| Q. | How do I use it? |
| A. | Warm the pack with a warmer (towel warmer, hot-caviar, etc.) or in case of emergency, warm it in a microwave oven and apply it to your belly or waist, which tend to get cold easily, or to your neck or shoulders, which tend to get stiff. The standard temperature for feeling comfortable warmth is around 42℃ for the outer cover surface temperature and 52℃ for the inner bag surface temperature. ※For hygiene and to prevent low-temperature burns, we recommend using a towel.  |
| Q. | How long should I apply it? |
| A. | It depends on the individual, but you will feel a pleasant sensation as soon as you apply it. After 10～15 minutes, you will feel it warming up to the depths. |
| Q. | Is there any possibility of low-temperature burns? |
| A. | Low-temperature burns are burns that may occur when an object of 44℃～50℃ comes in contact with the skin for an extended period of time, and are especially likely to occur with hot water bottles* and other warming devices that cannot be set to a specific temperature.
Therefore, under conditions where the surface temperature of the outer cover is warmed to around 42℃ and used for 10～15 minutes, there is almost no possibility of low-temperature burns, but please be careful (individual differences exist; please refrain from using the product on the same area for a long period of time). We recommend using a towel for hygiene and as a measure against low-temperature burns. When microwaving, be sure not to exceed 2 minutes ～ 2min 30sec at 600W (1 minute for one-point use and 10 to 20 seconds for eye care use). ※The natural ore may become too hot and cause burns. |
| Q. | I want to use it at home. Which size do you recommend? |
| A. | We recommend the size for neck and shoulders, which fits better. It can also be used on other parts of the body, such as the belly area and knees.  |
Effects
| Q. | What kind of effects can be obtained? |
| A. | Since it is not a medical device, we cannot frankly claim its effectiveness, but a general warming effect can be expected if the body is properly heated. |
| Q. | What are the effects of far-infrared radiation? |
| A. | You may often hear phrases such as “far-infrared rays are warm” or “far-infrared rays are good for you. However, it seems that not many people can give a clear answer when asked what far-infrared rays are. Therefore, we would like to explain it again. Light has different names and properties depending on its wavelength. Waves with longer wavelengths than the invisible red, which are outside the visible red wavelengths of visible light, are called infrared rays. Infrared rays are broadly divided into “near infrared rays” and “far infrared rays,” and electromagnetic waves of approximately 3 to 1000 μm are called “far infrared rays. Far-infrared radiation is emitted from all materials, and the higher the temperature of a material, the more strongly it radiates far-infrared radiation. Among the far-infrared ray bands, we use carefully selected natural ores (Onko Stone) that preferentially emit nurturing rays (8-14μm band), which are believed to have a positive effect on the human body. The light rays are in a wavelength band that easily resonates with the water in the cells of the human body, and the heat energy is carried by the blood, warming the entire body. The very limited wavelength range of 8 to 14 micrometers in far-infrared radiation is called “nurturing rays. Since these “nurturing rays” are the wavelengths that resonate most easily with water, heat energy is easily transmitted to the depths of plants and animals that contain a lot of water, and it is said to have the effect of promoting growth. Taking the human body as an example, the heat energy of far-infrared rays (nurturing rays) emitted from heated materials resonates with water molecules inside and outside the cells of the human body, is absorbed, and is efficiently transmitted to a wide area by the blood, resulting in “warming to the core and lasting (raising deep body temperature). This results in “warming to the core of the body and lasting warmth (increasing the deep body temperature). |
Installation
| Q. | Does the installation process require any special skills? |
| A. | No special skills are required for installation. Simply place the Warm Stone Pack in your warmer and heat it up. ※Any type of warmer (towel warmer, hot-caviar, etc.) is acceptable as long as it is equipped with a warming function. Please prepare a warmer of a size appropriate for the size of your facility. |
Setup and Operation
| Q. | How long does it take for the Warm Stone Pack to reach a comfortable temperature after the warmer is turned on? |
| A. | It takes about 2～3 hours for a warmer with an ordinary internal temperature of 70～ 80℃ to warm up to a comfortable temperature.
※The optimum temperature to obtain comfortable warmth is approximately 42℃ for the surface temperature of the outer cover and 52℃ for the surface temperature of the inner bag. ※The time required is only a rough estimate, as it depends on the installation environment, such as season and room temperature. Please note that there will inevitably be a difference in the degree of warming and the time required for warming between the area near the wall of the warmer and the area in the center of the warmer. ※Warming the food to a certain temperature in a microwave oven in advance and then using the warmer to keep the food warm will shorten the warming time and make the operation more efficient. ※If you are considering this for commercial use, we recommend a warmer. Please refer to the photos below for the approximate number of pieces that can be stored.         |
| Q. | Can I use towel warmers currently in use at my facility for warmers? |
| A. | Any type of warmer (towel warmer, hot-caviar, etc.) is acceptable as long as it is equipped with a warming function. Please prepare one of the appropriate size for the size of your facility. Please follow the instruction manual of each device when using it, keeping safety in mind. Please note that we are not responsible for any damage to the warmer. |
| Q. | Can I put a “WSP” and a wet towel (hand towel, etc.) together in the warmer to warm up them? |
| A. | Please do not put the Warm Stone Pack and a wet towel together in the warmer, as this may cause the outer cover to fade or discolor and may also cause sanitary problems. ※Please prepare a special machine for heating the Warm Stone Pack. |
| Q. | Can I use a microwave oven to warm WSP? Is it possible to use only a microwave oven, even if it is used frequently at an facility? |
| A. | Is it possible to use only a microwave oven, even if it is used frequently at an facility? A. Yes, it is possible. As a rule of thumb, it takes about 2 minutes at 600W (about 1 minute for one-point use and 10～20 seconds for eye care use) to reach a comfortable temperature (the surface temperature of the outer cover is around 42℃ (the surface temperature of the inner bag is around 52℃)) ※there are differences depending on the season, installation environment, and microwave oven model. ※For business use where frequent warming up is necessary, such as in various facilities, we recommend using a warmer for basic warming and a microwave oven for supplemental use (to prevent damage due to incorrect warming time settings and because microwave ovens inevitably produce uneven warming). Also, using a combination of warming the food in a microwave oven before warming it in a warmer will shorten the time required for warming and enable more efficient use of the warmer. ※When using a microwave oven, be sure not to exceed 2 minutes at 600W (1 minute for one-point use and 10～20 seconds for eye care use). ※When warming the product additionally after it has not cooled down, warm it for a shorter time (about 10 seconds at a time). ※Be sure to warm the product with the outer cover in place (do not warm the inner bag only). ※When using a turntable type, please store it so that it does not stop rotating. ※Please do not use the auto heating function of a microwave oven to warm up the product. (The natural ore may become too hot and cause burns. (It may also cause damage to the outer cover and inner bag.) ※Wipe the inside of the microwave oven clean of any dirt (oil components from food, etc.) before warming up the microwave oven. (Oil or other oily substances may damage the outer cover and inner pouch.) ※Please note that microwave ovens have different heating power depending on the model (the time it takes to heat up an object varies). |
| Q. | How long does the comfortable warmth of the WSP last? |
| A. | The comfortable warmth will last for about 20～30 minutes. It depends on the environment and temperature of use once warmed up. |
Maintenance
| Q. | Can the pouch be washed? |
| A. | The outer cover can be washed. It is made of two layers: a sealed inner bag containing natural minerals and an outer cover with a zipper (no zipper for Eye Care). When washing, be sure to remove the inner bag before washing the outer cover. ※When warming in a microwave oven, please make sure that the outer cover is completely dry before putting the inner cover in the microwave. |
| Q. | What should I do if the outer cover is damaged? |
| A. | We sell only the outer cover, so you can purchase it as needed in case of damage such as holes, or for replacement. |
