A heat and steam generator for eye application includes a heat and steam generating member making use of oxidative reaction of an oxidizable metal and is adapted to supply steam to eyes and surroundings. The heat and steam generator is adapted to release steam from its side brought into contact with
A heat and steam generator for eye application includes a heat and steam generating member making use of oxidative reaction of an oxidizable metal and is adapted to supply steam to eyes and surroundings. The heat and steam generator is adapted to release steam from its side brought into contact with eyes and surroundings for a period of 1 to 30 minutes to maintain the skin surface temperature to which it is applied at 34° C. to 43° C. over a period of 1 to 120 minutes. The heat and steam generator has a stiffness of 0.01 to 10 N/7 cm-width. The heat and steam generator is effective in improving near triad causing reduction in vision.
대표청구항▼
1. A heat and steam generator for eye application comprising: a holder holding a heat and steam generating member containing an oxidizable metal which generates heat and steam by making use of an oxidative reaction of the oxidizable metal, the heat and steam generator being designed to supply steam
1. A heat and steam generator for eye application comprising: a holder holding a heat and steam generating member containing an oxidizable metal which generates heat and steam by making use of an oxidative reaction of the oxidizable metal, the heat and steam generator being designed to supply steam to eyes and its surroundings,wherein the heat and steam generator releases steam from its side adapted to face the eyes and its surroundings for a period of 1 to 30 minutes to maintain the surface temperature of the skin which it faces at 34° C. to 43° C. over a period of 1 to 120 minutes,wherein the holder and the heat and steam generating member form a structure having a stiffness of 0.01 to 10 N/7cm-width, as measured by supporting a portion of the holder, which holds the heat and steam generating member, at opposing ends of the portion of the holder which extend in a vertical direction of the holder, and measuring a maximum resistance encountered by a platy penetrator blade which contacts a central the portion of the holder, andwherein a span of a specimen of the holder used for measuring the stiffness is 80 mm, the platy penetrator blade has a width of 50 mm and a tip radius of 5 mm, a crosshead speed of the platy penetrator blade is 20 mm/min, and, for measuring, the width of the platy penetrator blade coincides with the vertical direction of the holder. 2. The heat and steam generator for eye application according to claim 1, wherein the holder is a flat holder in which the heat and steam generating member is held, the holder having a first air permeable side and a second air permeable side opposite to the first air permeable side and being designed to release steam from at least one of the first and second air permeable sides that faces the eyes and its surroundings. 3. The heat and steam generator for eye application according to claim 2, wherein the second side has an air permeance (JIS P8117) equal to or higher than that of the first side, and wherein the heat and steam generator is designed to release steam through the first side. 4. The heat and steam generator for eye application according to claim 3, wherein the first side has an air permeance of 0.01 to 15000 seconds, and the second side has an air permeance of 100 to 60000 seconds. 5. The heat and steam generator for eye application according to claim 1, wherein the first side has a water vapor transmission rate of 100 g/(m2·24 hr) or more. 6. The heat and steam generator for eye application according to claim 1, wherein the holder is a flat holder in which the heat and steam generating member is held, the holder having an air permeable side and an air impermeable side opposite to the air permeable side and being designed to release steam from the air permeable side. 7. The heat and steam generator for eye application according to claim 6, wherein the air permeable side has a water vapor transmission rate of 100 to 20000 g/(m2·24 hr). 8. The heat and steam generator for eye application according to claim 1, wherein the heat and steam generating member comprises a heat generating sheet capable of generating heat on contact with air, the heat generating sheet comprising a molded sheet containing an oxidizable metal, a reaction accelerator, and a fibrous material and an aqueous electrolyte solution incorporated into the molded sheet. 9. The heat and steam generator for eye application according to claim 1, further comprising an ear loop on both ends thereof. 10. The heat and steam generator for eye application according to claim 1, which is used in combination with an eye mask as inserted between the eye mask and wearer's eyes. 11. The heat and steam generator for eye application according to claim 1, which has a label indicating that it relieves eyestrain and/or dry eye or which is put in a package having the label. 12. The heat and steam generator for eye application according to claim 1, wherein the holder has a stiffness of 0.03 to 8 N/7cm-width. 13. The heat and steam generator for eye application according to claim 1, wherein the holder has a stiffness of 0.05 to 5 N/7cm-width. 14. The heat and steam generator for eye application according to claim 1, whereinthe holder has a first side that is to face the skin and a second side which faces an opposing direction, andthe first and second sides are joined at a peripheral seal and at two annular seals which are located within the peripheral seal. 15. The heat and steam generator for eye application according to claim 14, wherein the two annular seals provide respective spaces in which heat and steam generating members are held so as to be separated by the two annular seals. 16. The heat and steam generator for eye application according to claim 1, whereinthe holder has spaces in which a pair of heat and steam generating members are contained, andthe spaces of the holder are connected to each other to form a single space via a connecting space located in a lateral middle portion of the heat and steam generator so that the single space contains the pair of heat and steam generating members. 17. The heat and steam generator for eye application according to claim 1, further comprising: ear loops at both ends of the heat and steam generator which are attached by ear loop joints, wherein each ear loop joint extends at an inclination across the heat and steam generator inboard of a lateral end of the heat and steam generator with an upper end thereof positioned outboard of a lower end thereof. 18. The heat and steam generator for eye application according to claim 1, wherein a surface of the heat and steam generator to which the eyes and its surroundings are brought into contact include a non-woven fabric which contains three-dimensionally crimped fibers.
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