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Structure for cooling

a technology of structure and water retention, applied in the field of structures having water retention members, can solve the problems of no cooling effect, no cooling effect, and uncontrolled cooling efficiency, and achieve the effect of controlling cooling efficiency and eliminating or minimizing fungal contamination

Inactive Publication Date: 2010-05-06
OHSHIN MLP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0017]Embodiments of the present invention relate to structures for cooling. These structures may enable controlled cooling efficiency by using latent heat of water vaporization (or heat of gasification of water). By replenishing water, such a structure for cooling may be used repeatedly for a long time. Specifically, embodiments of the present invention relate to structures for cooling, in which the outer surface of each structure cover is less likely to become damp by the moisture coming from a water-holding substance disposed inside the structures. The present invention also relates to structures for cooling that may eliminate or minimize fungal contamination.

Problems solved by technology

However, after water vaporization ceases, the cooling effect is no longer available.
The latent heat of vaporization of water results in cooling effects.
The first problem is that the cooling efficiency is not controlled, and the second one is that the outer wrapping, which is made of an air-permeable material, e.g., a nonwoven fabric, may become damp by the water vapor coming from the water-absorptive polymers.
However, the control of the cooling efficiency is not considered in this device.
Additionally, the part of the bag made of the air-permeable material may become damp by the water vapor from the water-permeable pouch-like member.
Again, there are problems that need to be solved before human use.
In the case that the outside of the bag does not become damp by the water vapor from the water-permeable pouch-like member, the bag may be saturated by the water vapor, resulting in limited cooling effects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

(1) Preparation of Pads

[0120]The pads shown in FIG. 9 may be prepared, for example, by using the following materials:

[0121]A. Materials Used for Each Layer[0122]A-1. Fibrous layers 1 and 7 of a cover 100: a board made of polyester (65%) and cotton (35%); yarn finenesses of 45 counts×45 counts with density of 100×70.[0123]A-2. Air-permeable sheet layer 3 of a cover 100: porous polyethylene film with thickness of 50 μm.[0124]A-3. Air-impermeable sheet layer 5 of a cover 100: polyethylene film; thickness of 50 μm.[0125]A-4. Nonwoven fabric 9x of a bag P of a water-retentive member 700; a lid portion: spun-bonded nonwoven fabric made of a polyester with thickness of 40 g / m2.[0126]A-5. Nonwoven fabric 9y of a bag P of a water-retentive member 700; a bottom portion and side portions: spun-bonded nonwoven fabric made of a polypropylene with thickness of 40 g / m2.[0127]A-6. Air-impermeable sheet layer 19 of a bag P of a water-retentive member 700: polyethylene film with thickness of 40 μm.[0...

example 2

(1) Preparation of Pads

[0141]Similar to Example 1, three kinds of pads are prepared having a size of 100 cm×200 cm. For the air-permeable side of the cover, composite materials a having moisture-permeability of about 1,000 g / m2·24 hours, about 1,200 g / m2·24 hours, and about 1,500 g / m2·24 hours by the Lyssy method are used. The amount of the water poured into the pads is 7 kg per pad (i.e., 3.5 kg / m2 of the water-retentive member).

(2) Organoleptic Test

[0142]A futon (which is like a mattress) is positioned inside a room, in which the temperature is set at 30 degrees Celsius. The pad is laid on the futon and covered with a sheet made of a cotton. As a control, a futon without the pad is prepared.

[0143]The surface temperatures on the sheet are determined by using a surface thermometer. Each panelist lies on the sheet and judged at appropriate time intervals whether he(she) feels cool or warm at neck, shoulders, loin, hip, legs / feet, and arms. The results from these tests are shown in FI...

example 3

(1) Preparation of Pads Containing Antifungal Agent

[0145]One pad is prepared in the same manner as described in Example 1, except that the cover 100 has a size of 95 cm×185 cm. The water-retentive member 700 has a size of 90 cm×180 cm containing an antifungal agent. The air-permeable side of the cover has a moisture-permeability of about 1,000 g / m2·24 hours.

(2) Preparation of Liquid Containing an Antifungal Agent and Binder

[0146]Table 1 shows the formulation of a solution containing an antifungal agent. The solution is prepared by mixing the raw materials.

TABLE 1AmountsRaw Materials(% by weight)Amorden NBP8 (Triazole Derivative from Yamato2Chemical Industrial Co., Ltd.)Aqueous Binder of Vinyl Acetate Derivative1Water97Total100

(3) Adhesion of Antifungal Agent

[0147]From about 1 meter above the nonwoven fabric 9x of the bag P, the solution shown in Table 1 is uniformly sprayed on the water-retentive member 700. The amount of the solution used is about 500 g. Namely, to the water-retent...

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Abstract

A structure for cooling having a cover and a water-retentive member, wherein the water-retentive member includes a bag and a water-absorptive material disposed inside the bag, wherein the water-retentive member is disposed inside the cover, wherein the first side of the cover having a moisture-permeability of 500 to 3,000 g / m2·24 hours, as determined by the Lyssy Method; a first side of the bag is moisture- or water-permeable; and at least one of a second side of the cover and a second side of the bag is water-impermeable.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This patent application is related to a Japanese patent application: Japanese Patent Early-publication No. 2007-289594, published on Nov. 8, 2007.BACKGROUND OF INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a structure having a water-retentive member for cooling human or animal bodies.[0004]2. Background Art[0005]Absorptive substances that can be used as a disposable diaper and the like usually comprise a liquid-permeable sheet, a liquid-impermeable sheet, and a water-absorptive material, which may be placed between the liquid-permeable sheet and the liquid-impermeable sheet. The water-absorptive material may comprise fibrous base materials such as a nonwoven fabric and water-absorptive resins or highly water-absorptive polymers held to the fibrous base materials. Paper may also be used with the water-absorptive material.[0006]Japanese Patent Early-publication No. 2004-358797 discloses a liner for incontine...

Claims

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Application Information

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IPC IPC(8): F28F7/00F28F19/00
CPCA01K13/006A61F7/02A61F7/10A61F2007/0098A61F2007/0214A61F2007/0258A61F2007/026
Inventor OTA, KEIZOWATANABE, TETSUHIRO
Owner OHSHIN MLP CO LTD
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