EP1974619A1 - Material for underwater suit and underwater suit making use of the same - Google Patents
Material for underwater suit and underwater suit making use of the same Download PDFInfo
- Publication number
- EP1974619A1 EP1974619A1 EP05781509A EP05781509A EP1974619A1 EP 1974619 A1 EP1974619 A1 EP 1974619A1 EP 05781509 A EP05781509 A EP 05781509A EP 05781509 A EP05781509 A EP 05781509A EP 1974619 A1 EP1974619 A1 EP 1974619A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elastic foam
- foam layer
- suit
- recess portions
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 63
- 239000006260 foam Substances 0.000 claims abstract description 119
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000010410 layer Substances 0.000 claims description 142
- 239000011247 coating layer Substances 0.000 claims description 37
- 239000002088 nanocapsule Substances 0.000 claims description 17
- 239000003094 microcapsule Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 14
- 230000000717 retained effect Effects 0.000 abstract description 8
- 239000004744 fabric Substances 0.000 description 30
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 239000011248 coating agent Substances 0.000 description 14
- -1 fluororesin Polymers 0.000 description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 12
- 239000011888 foil Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229920001971 elastomer Polymers 0.000 description 8
- 239000005060 rubber Substances 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- 238000005187 foaming Methods 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 6
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000002195 synergetic effect Effects 0.000 description 6
- 229920003052 natural elastomer Polymers 0.000 description 5
- 229920001194 natural rubber Polymers 0.000 description 5
- 229920001084 poly(chloroprene) Polymers 0.000 description 5
- 229920003051 synthetic elastomer Polymers 0.000 description 5
- 239000005061 synthetic rubber Substances 0.000 description 5
- 230000009189 diving Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000005062 Polybutadiene Substances 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002648 laminated material Substances 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/012—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches for aquatic activities, e.g. with buoyancy aids
- A41D13/0125—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches for aquatic activities, e.g. with buoyancy aids with buoyancy aids
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/06—Thermally protective, e.g. insulating
- A41D31/065—Thermally protective, e.g. insulating using layered materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/04—Resilient suits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/04—Resilient suits
- B63C2011/046—Wet suits, or diving vests; Equipment therefor
Definitions
- the present invention relates to a material for underwater suits and an underwater suit using the same.
- Underwater suits can be divided into wet and dry suits, each of which includes suits for diving, surfing, and triathlon.
- the wet suit is intended to be used by placing water in the suit to provide a heat-retaining effect.
- the heat-retaining effect is exerted by water being filled between the body and wet suit and warmed by body temperature.
- the dry suit is intended to have a structure preventing the influx of sea water into the suit to keep the inside thereof in a dry state to provide a heat-retaining effect.
- Patent Document 1 discloses a wet suit composed of a cloth material in which a woven or knitted fabric having elasticity is laminated to both sides of a foaming rubber material, wherein the space between the cloth material and the body of a wearer is wetted with water by its exposure, in which holes are provided in part or whole of the foaming rubber material.
- Patent Document 1 Japanese Patent Laid-Open No. 6-312692 (See Claim 1 and paragraph no. 0017)
- the wet suit described in Patent Document 1 has the advantage of having a good air permeability on land because the holes provided in the foaming rubber material pierce through.
- the holes provided in the foaming rubber material pierce through.
- the heat-retaining effect thereof is low.
- the wet suit described in Patent Document 1 is provided with heat-retaining properties and buoyancy by using the foaming rubber material, but the effects of thereof is not sufficient because the amount of air retained by the foaming rubber material is small. Even if air is present in the holes, it is discharged and can not be retained because the holes are formed by piercing the foaming rubber material. Thus, the suit can not be sufficiently provided with heat-retaining properties and buoyancy.
- an object of the present invention is to provide a material for underwater suits, having high heat-retaining effect and buoyancy, and an underwater suit using the same.
- the present invention provides a material for underwater suits, characterized by comprising an elastic foam layer having plural recess portions formed on at least one side thereof.
- the material when used as a wet suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, it can retain a large amount of water because of the accumulation of water in the recess portions, which makes a film of water prone to be formed between the body and the suit.
- the warmed water is hardly discharged to the outside, but also external cold water less easily penetrates, because the recess portions do not pierce through the elastic foam layer.
- a wet suit having a high heat-retaining effect is obtained.
- “Material for underwater suits, having an elastic foam layer” is a concept including a monolayer material consisting of only an elastic foam layer and a laminated material consisting of other layers laminated to the elastic foam layer.
- the recess portions may be also formed on both sides of the elastic foam layer.
- the opening of the recess portion has a diameter of, for example, 2 to 6 mm, preferably 4 mm.
- the depth of the recess portion is, for example, 0.5 to 5 mm, preferably 1 to 4 mm. A deviation from the above-described range cannot provide favorable heat-retaining effect and buoyancy.
- a different layer may be laminated to the elastic foam layer; it may be laminated to the surface of the side where recess portions are not formed (hereinafter referred to as "recess non-formed surface") or may be laminated to the recessed surface.
- the different layer include an elastic foam, a stretchable fabric such as jersey, a layer using a coating agent, and a coating layer such as metal foil.
- the lamination of a different layer to the recessed surface will lead to the closing of the openings of the recess portions by the different layer, and therefore is suitable when air is desired to be retained in the recess portions to enhance the heat-retaining properties and buoyancy of an underwater suit.
- a closing layer impermeable to both air and water is laminated to the recessed surface of the elastic foam layer directly or via another layer to close the openings of the recess portions. Under this situation, the whole insides of the recess portions are prevented from being filled by the closing layer or another layer.
- Air is less susceptible to leakage to the outside of the recess and water less easily penetrates into the recess, because the recess does not pierce through the elastic foam layer and has the opening closed by a closing layer impermeable to both air and water.
- air can be retained in the recess, which imparts stable buoyancy to the laminated material.
- the material is suitable for suits for triathlon, requiring buoyancy under water.
- the material for the closing layer is not limited, provided that it is a material impermeable to both air and water, but preferably an elastic foam having closed cells.
- An elastic foam can strengthen the heat-retaining properties and buoyancy through the cells contained therein.
- the closing layer may be laminated to the elastic foam layer directly or by inserting another layer in between.
- the closing layer just has to be able to close the openings of the recess portions of the elastic foam layer directly or indirectly.
- another layer include a stretchable fabric such as jersey, a layer using a coating agent, and a coating layer such as metal foil.
- the elastic foam comprising the elastic foam layer or closing layer is preferably Neoprene Rubber (registered trademark; hereinafter omitted), but may be natural rubber, a synthetic rubber such as chloroprene rubber, isoprene rubber, butyl rubber, styrene-butadiene rubber, butadiene rubber, nitrile rubber, ethylenepropylene rubber, or chlorosulfonated polyethylene rubber, or a synthetic resin.
- Neoprene Rubber registered trademark; hereinafter omitted
- a synthetic rubber such as chloroprene rubber, isoprene rubber, butyl rubber, styrene-butadiene rubber, butadiene rubber, nitrile rubber, ethylenepropylene rubber, or chlorosulfonated polyethylene rubber, or a synthetic resin.
- a coating layer containing hollow microcapsules or nanocapsules is laminated to at least one side of the elastic foam layer.
- the coating layer containing hollow microcapsules or nanocapsules may be also present on at least one surface of the laminated body or between arbitrary layers of the laminated body.
- the material for the coating layer or microcapsules or nanocapsules is not limited.
- the containment of hollow microcapsules or nanocapsules in the coating layer can enhance the heat-retaining properties and buoyancy because the laminate contains air cells.
- the material for underwater suits constituted as mentioned above can be applied to various under water suits, including, for example, a wet suit, a semidry suit, and a dry suit. More specifically, it is suitable for diving, surfing, or triathlon.
- the material when the material is used as a wet suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of water can be retained and a film of water is prone to be formed between the body and the suit, because water is accumulated in the recess portions.
- a wet suit having a high heat-retaining effect can be made.
- the material when used as a dry suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of air remains in the recess portions, and the air is hardly discharged to the outside, because the recess portions do not pierce through.
- the synergistic effect of the air remaining in the recess portions and the air cells which the elastic foam has enables the sufficient exertion of the heat-retaining properties and buoyancy.
- the closing layer when the closing layer is laminated to the recessed surface of the elastic foam layer directly or via another layer to close the openings of the recess portions, air is less susceptible to leakage to the outside of the recess portions and water less easily penetrates into the recess portions.
- the use thereof in both of the wet suit and dry suit enables the retaining of air in the recess portions, and can impart stable buoyancy to these suits.
- Figure 1 is a cross-sectional view of a material comprising an underwater suit of a first embodiment.
- the material composing an underwater suit of this embodiment is composed of an elastic foam layer 2 having plural recess portions 1 formed on one side thereof, a stretchable fabric 3 laminated to the recess non-formed surface of the elastic foam layer 2, and a coating layer 4 formed on the recessed surface of elastic foam layer 2.
- the lamination between the elastic foam layer 2 and the stretchable fabric 3 is properly fixed using any adhesive, but may be fixed by another means.
- the coating layer 4 itself has adhesiveness such as tackiness, it may be laminated using the adhesiveness.
- the material for underwater suits thus formed is arranged so that the recessed surface faces the side of the body, and subjected to sewing or the like in a three-dimensional manner so as to fit the body to form an underwater suit.
- the elastic foam layer 2 consists of an elastic foam having closed cells.
- As the elastic foam neoprene rubber is used, but another natural or synthetic rubber or a synthetic resin may be employed.
- the elastic foam layer 2 has a thickness of, but not limited to, about 1 to 10 mm, preferably 1 to 8 mm, more preferably 4 to 5 mm.
- a plurality of recess portions 1 having circular cross sections are formed on one side of the elastic foam layer 2.
- the recess portion 1 has an opening diameter of 3 mm, a depth of 1 mm, and a minimal distance to the circumference of an adjacent recess portion of about 4 mm.
- Two to three recess portions 1 per cm 2 are preferable because sufficient heat-retaining properties and buoyancy can be imparted.
- the recess portions 1 are regularly arranged lengthwise and crosswise on one side of the elastic foam layer 2.
- the elastic foam layer 2 may be formed in a unified manner, or may be formed by laminating an elastic foam 2b having a multiplicity of through-holes to an elastic foam 2a having a sheet form as shown in Figure 2 .
- the portion surrounded by the through-hole and the elastic foam 2a having a sheet form forms the recess portion 1.
- stretchable fabric 3 nylon or polyester jersey fabric is used, but another woven fabric or knit employing a synthetic or natural fiber having a good air permeability may be used.
- the stretchable fabric 3 is preferable because it can follow body movement owing to the stretchability thereof.
- the stretchable fabric 3 has a thickness of 0.2 to 1.5 mm, preferably about 0.5 mm.
- the coating layer 4 contains hollow nanocapsules or microcapsules.
- the inclusion of air in nanocapsules or microcapsules results in the containment of air cells in the coating layer 4, which enhances the heat-retaining properties and buoyancy.
- the coating layer 4 coated on the recessed surface of the elastic foam layer 2 may be laminated to only the region excluding the recess portions 1 as shown in Figure 1 , or may be coated along the interior surface of the recess portions 1 so that the recess portions 1 are not wholly filled therewith.
- the nanocapsule or microcapsule is a hollow capsule containing no core substance in the shell;
- the material for the shell is suitably polyurethane resin, but may be composed of a thermoplastic substance selected from the group consisting of polyamide, polybutadiene, acrylonitril, methyl methacrylate and vinylidene chloride resins, or a mixture thereof.
- the blending amount of the nanocapsule or microcapsule is preferably 1 to 10% by weight based on the coating layer.
- Non-limiting examples of the coating layer 4 include a layer using a coating agent, or metal foil; a well-known material may be employed if it can contain nanocapsules or microcapsules.
- Coating agents include, but not limited to, urethane resin, fluororesin, olefin resin and silicon resin coating agents.
- the coating layer 4 is preferably an amphipathic coating agent having hydrophilicity and hydrophobicity. Examples thereof include a coating agent containing a surfactant.
- An underwater suit capable of repelling water in the air and having affinity with water in water to reduce flow resistance can be made.
- the metal foil is a metal material made in the form of a film. This metal foil may be used by sticking to another layer using an adhesive or the like.
- the film-like metal foil is an ultra-thin film having a thickness of about 70 microns and effectively exerts heat-insulating and heat-retaining properties. The fatigue of a wearer due to heat loss can be reduced.
- a material for the metal foil is preferably titanium, but gold, silver, aluminium, lead, or the like may be also used. Nanocapusules or microcapsules are coated on the surface of a metal foil of any of the above materials using a coating agent so that these capsules are disposed in dots.
- the material of this embodiment when used as an underwater suit, in which case the recessed surface of the elastic foam layer 2 faces the side of the body, a large amount of water can be retained and a film of water is prone to be formed between the body and the suit, because water is accumulated in the recess portions 1.
- the underwater suit will have a high heat-retaining effect.
- the material when used as a dry suit, a large amount of air can remain in the recess portions 1.
- the air in the recess portions 1 is hardly discharged to the outside because the recess portions 1 do not pierce through.
- the synergistic effect of the air remaining in recess portions 1 and the closed cells present in the elastic foam layer 2 enables the sufficient exertion of the heat-retaining properties and buoyancy.
- Figure 3 is a cross-sectional view of a material comprising an underwater suit of a second embodiment.
- this embodiment is characterized in that a closing layer 5 consisting of an elastic foam is laminated to the recessed surface of the elastic foam layer 2 to close the openings of the recess portions 1, and has other basic constitutions similar to those of the above-described first embodiment.
- the lamination between the elastic foam layer 2 and the closing layer 5 is properly fixed using any adhesive, but may be fixed by another means.
- the material composing an underwater suit of the second embodiment is composed of the elastic foam layer 2 having the plural recess portions 1 formed on one side thereof, a stretchable fabric 3 laminated to the recess non-formed surface of the elastic foam layer 2, a closing layer 5 laminated to the recessed surface of the elastic foam layer 2, and coating layer 4 laminated to the surface of closing layer 5.
- the coating layer 4 is arranged so as to face the side of the body.
- elastic foam layer 2 may be reversed with closing layer 5 positioned in the outer side direction.
- the coating layer 4, the elastic foam layer 2, the closing layer 5 laminated to the recessed surface of the elastic foam layer 2, and the stretchable fabric 3 may be laminated in that order from the side of the body.
- the material for underwater suits thus formed is subjected to sewing or the like in a three-dimensional manner so as to fit the body to form an underwater suit.
- the closing layer 5 consists of an elastic sheet foam.
- the elastic foam Neoprene Rubber is used as is the case with the elastic foam layer 2, but another natural or synthetic rubber or a synthetic resin may be employed.
- the elastic foam has closed cells.
- the closing layer 5 has a thickness of, but not limited to, about 1 to 10 mm, preferably about 4 to 5 mm.
- Air can be stored in the recess portions 1 because the openings of the recess portions 1 formed on elastic foam layer 2 are closed by the closing layer 5.
- the air in the recess portions 1 is less susceptible to leakage.
- stable heat-retaining properties and buoyancy can be imparted to the underwater suit.
- This embodiment is suitable for a suit for triathlon requiring buoyancy.
- Figure 4 is a cross-sectional view showing one example of a material used for wet suits for diving.
- a coating layer 4a, an elastic foam layer 2, a coating layer 4b laminated to the recess non-formed surface of the elastic foam layer 2, a second elastic foam layer 6 having a sheet form, the coating layer 4b, and a stretchable fabric 3 are laminated in that order from the side of the body.
- the thicknesses of the elastic foam layer 2, the second elastic foam layer 6, and the stretchable fabric 3 are 5 mm, 5 mm, and 0.5 mm, respectively.
- the thicknesses of the elastic foam layer 2, the second elastic foam layer 6, and the stretchable fabric 3 may be varied in the ranges of 1 to 10 mm, 1 to 10 mm, and 0.2 to 1.5 mm, respectively.
- the second elastic foam layer 6 consisted of an elastic foam having closed cells.
- the elastic foam Neoprene Rubber is used, but another natural or synthetic rubber or a synthetic resin may be employed.
- the coating layer 4 contains nanocapsules.
- the nanocapsule used is NC948 from Nomura Trading Co., Ltd., but not limited thereto.
- An amphipathic coating agent is used for the coating layer 4a on the side of the recessed surface of elastic foam layer 2.
- the amphipathic coating agent is obtained by uniformly mixing 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicon oil, and 2 parts by weight of sodium dodecyl sulfate in the following solvents: 2 parts by weight of acetone, 3 parts by weight of methyl isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol.
- MIBK methyl isobutylene ketone
- the amount of the polyurethane polymer may be varied in the range of 8 to 18 parts by weight; that of the polytetrafluoroethylene fine powder, 2 to 12 parts by weight; that of silicon oil, 1 to 7 parts by weight; that of sodium dodecyl sulfate, 1 to 7 parts by weight; that of acetone, 1 to 7 parts by weight; that of methyl isobutylene ketone (MIBK), 1 to 8 parts by weight; that of toluene, 50 to 60 parts by weight; that of butyl acetate, 1 to 10 parts by weight; and that of diacetone alcohol, 6 to 16 parts by weight.
- metal foils of titanium are used in the coating layers 4b between the elastic foam layer 2 and the second foam layer 6 and between the second foam layer 6 and the stretchable fabric 3.
- the material When the material is used as a wet suit, in which case the recessed surface of the elastic foam layer 2 faces the side of the body, a film of water is prone to be formed between the body and the suit because water is accumulated in the recess portions 1.
- the wet suit will have a high heat-retaining effect.
- Figure 5 is a cross-sectional view showing one example of a material used for wet suits for surfing.
- a coating layer 4a, an elastic foam layer 2, a coating layer 4b laminated to the recess non-formed surface of the elastic foam layer 2, a stretchable fabric 3, a coating layer 4b, a second elastic foam layer 6 having a sheet form, and the coating layer 4a are laminated in that order from the side of the body.
- the stretchable fabric 3 hardly absorbs water because it positions between the elastic foam layer 2 and the second elastic foam layer 6. Thus, this reduces a change in weight of the whole material.
- the thicknesses of the elastic foam layer 2, the second elastic foam layer 6, and the stretchable fabric 3 are 5 mm, 5 mm, and 0.5 mm, respectively.
- the thicknesses of elastic foam layer 2, second elastic foam layer 6, and jersey fabric 3 may be varied in the ranges of 1 to 10 mm, 1 to 10 mm, and 0.2 to 1.5 mm, respectively.
- the coating layer 4b contains nanocapsules.
- the nanocapsule used is NC948 from Nomura Trading Co., Ltd., but not limited thereto.
- An amphipathic coating agent is used for the coating layers 4a on the recessed surface of the elastic foam layer 2 and the surface of the second elastic foam layer 6.
- the amphipathic coating agent is obtained by uniformly mixing 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicon oil, and 2 parts by weight of sodium dodecyl sulfate in the following solvents: 2 parts by weight of acetone, 3 parts by weight of methyl isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol.
- MIBK methyl isobutylene ketone
- the amount of the polyurethane polymer may be varied in the range of 8 to 18 parts by weight; that of the polytetrafluoroethylene fine powder, 2 to 12 parts by weight; that of silicon oil, 1 to 7 parts by weight; that of sodium dodecyl sulfate, 1 to 7 parts by weight; that of acetone, 1 to 7 parts by weight; that of methyl isobutylene ketone (MIBK), 1 to 8 parts by weight; that of toluene, 50 to 60 parts by weight; that of butyl acetate, 1 to 10 parts by weight; and that of diacetone alcohol, 6 to 16 parts by weight.
- metal foils of titanium are used for the coating layers 4b between the elastic foam layer 2 and the stretchable fabric 3 and between the stretchable fabric 3 and the second elastic foam layer 6.
- the material of this embodiment is used as a wet suit, in which case the recessed surface of the elastic foam layer 2 faces the side of the body, a film of water is prone to be formed between the body and the suit because water is accumulated in the recess portions 1.
- the wet suit will have a high heat-retaining effect.
- Figure 6 is a cross-sectional view showing one example of a material used for wet suits for triathlon.
- a coating layer 4a, a closing layer 5, a stretchable fabric 3, an elastic foam layer 2, a second elastic foam layer 6, and coating layer 4a are laminated in that order from the side of the body.
- the stretchable fabric 3 hardly absorbs water because it is positioned between the elastic foam layer 2 (and second elastic foam layer 6) and the closing layer 5. Thus, this reduces a change in weight of the whole material.
- the thicknesses of the closing layer 5, the stretchable fabric 3, the elastic foam layer 2, and the second elastic foam layer 6 are 5 mm, 0.5 mm, 5 mm, and 5 mm, respectively.
- the thicknesses of closing layer 5, jersey fabric 3, elastic foam layer 2, and second elastic foam layer 6 may be varied in the ranges of 1 to 10 mm, 0.2 to 1.5 mm, 1 to 10 mm, and 1 to 10 mm, respectively.
- the coating layer 4a contains nanocapsules.
- the nanocapsule used is NC948 from Nomura Trading Co., Ltd., but not limited thereto.
- An amphipathic coating agent is used for the coating layers 4a on the surface of the closing layer 5 and the surface of the second elastic foam layer 6.
- the amphipathic coating agent is obtained by uniformly mixing 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicon oil, and 2 parts by weight of sodium dodecyl sulfate in the following solvents: 2 parts by weight of acetone, 3 parts by weight of methyl isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol.
- MIBK methyl isobutylene ketone
- the amount of the polyurethane polymer may be varied in the range of 8 to 18 parts by weight; that of the polytetrafluoroethylene fine powder, 2 to 12 parts by weight; that of silicon oil, 1 to 7 parts by weight; that of sodium dodecyl sulfate, 1 to 7 parts by weight; that of acetone, 1 to 7 parts by weight; that of methyl isobutylene ketone (MIBK), 1 to 8 parts by weight; that of toluene, 50 to 60 parts by weight; that of butyl acetate, 1 to 10 parts by weight; and that of diacetone alcohol, 6 to 16 parts by weight.
- MIBK methyl isobutylene ketone
- Air can be stored in the recess portions 1 because the openings of the recess portions 1 on the elastic foam layer 2 are closed by the closing layer 5.
- This embodiment is suitable for a suit for triathlon requiring buoyancy.
- the material when the material is used as a wet suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of water can be retained and a film of water is prone to be formed between the body and the suit, because water is accumulated in the recess portions.
- a wet suit having a high heat-retaining effect can be made.
Abstract
Description
- The present invention relates to a material for underwater suits and an underwater suit using the same.
- Underwater suits can be divided into wet and dry suits, each of which includes suits for diving, surfing, and triathlon. The wet suit is intended to be used by placing water in the suit to provide a heat-retaining effect. Thus, the heat-retaining effect is exerted by water being filled between the body and wet suit and warmed by body temperature. Conversely, the dry suit is intended to have a structure preventing the influx of sea water into the suit to keep the inside thereof in a dry state to provide a heat-retaining effect.
- As a material for these underwater suits, an elastic foam such as natural or synthetic rubber is generally used which has a stretchable fabric such as jersey laminated to its surface. For example,
Patent Document 1 discloses a wet suit composed of a cloth material in which a woven or knitted fabric having elasticity is laminated to both sides of a foaming rubber material, wherein the space between the cloth material and the body of a wearer is wetted with water by its exposure, in which holes are provided in part or whole of the foaming rubber material. - This wet suit does not give unpleasant feelings such as swelter and squalor to the wearer in the case of competitive sports such as triathlon where exercises are performed on land while wearing a wet suit because the holes provided in the foaming rubber material give a good air permeability. It has been also described that the wet suit can be suitably worn without impairing mobility when the wearer moves from underwater to land because the water infiltrating in the suit is instantaneously discharged with air to the outside.
Patent Document 1: Japanese Patent Laid-Open No.6-312692 Claim 1 and paragraph no. 0017) - The wet suit described in
Patent Document 1 has the advantage of having a good air permeability on land because the holes provided in the foaming rubber material pierce through. However, in water, not only the water specially warmed in the suit is discharged thereoutside through the holes, but also external cold water flows into the suit through the holes. Thus, the heat-retaining effect thereof is low. - In addition, the wet suit described in
Patent Document 1 is provided with heat-retaining properties and buoyancy by using the foaming rubber material, but the effects of thereof is not sufficient because the amount of air retained by the foaming rubber material is small. Even if air is present in the holes, it is discharged and can not be retained because the holes are formed by piercing the foaming rubber material. Thus, the suit can not be sufficiently provided with heat-retaining properties and buoyancy. - In view of the above-described problems, an object of the present invention is to provide a material for underwater suits, having high heat-retaining effect and buoyancy, and an underwater suit using the same.
- For solving the above-described problems, the present invention provides a material for underwater suits, characterized by comprising an elastic foam layer having plural recess portions formed on at least one side thereof. When the material is used as a wet suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, it can retain a large amount of water because of the accumulation of water in the recess portions, which makes a film of water prone to be formed between the body and the suit. In addition, not only the warmed water is hardly discharged to the outside, but also external cold water less easily penetrates, because the recess portions do not pierce through the elastic foam layer. Thus, a wet suit having a high heat-retaining effect is obtained.
- Further, when the material is used as a dry suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of air can remain in the recess portions. The air is hardly discharged to the outside because the recess portions do not pierce through. Thus, the synergistic effect of the air remaining in the recess portions and the air cells which the elastic foam has enables the sufficient exertion of the heat-retaining properties and buoyancy.
- "Material for underwater suits, having an elastic foam layer" is a concept including a monolayer material consisting of only an elastic foam layer and a laminated material consisting of other layers laminated to the elastic foam layer. The recess portions may be also formed on both sides of the elastic foam layer.
- The opening of the recess portion has a diameter of, for example, 2 to 6 mm, preferably 4 mm. The depth of the recess portion is, for example, 0.5 to 5 mm, preferably 1 to 4 mm. A deviation from the above-described range cannot provide favorable heat-retaining effect and buoyancy.
- A different layer may be laminated to the elastic foam layer; it may be laminated to the surface of the side where recess portions are not formed (hereinafter referred to as "recess non-formed surface") or may be laminated to the recessed surface. Non-limiting examples of the different layer include an elastic foam, a stretchable fabric such as jersey, a layer using a coating agent, and a coating layer such as metal foil.
- The lamination of a different layer to the recessed surface will lead to the closing of the openings of the recess portions by the different layer, and therefore is suitable when air is desired to be retained in the recess portions to enhance the heat-retaining properties and buoyancy of an underwater suit. Specifically, a closing layer impermeable to both air and water is laminated to the recessed surface of the elastic foam layer directly or via another layer to close the openings of the recess portions. Under this situation, the whole insides of the recess portions are prevented from being filled by the closing layer or another layer. Air is less susceptible to leakage to the outside of the recess and water less easily penetrates into the recess, because the recess does not pierce through the elastic foam layer and has the opening closed by a closing layer impermeable to both air and water. Thus, air can be retained in the recess, which imparts stable buoyancy to the laminated material. Here, the material is suitable for suits for triathlon, requiring buoyancy under water.
- The material for the closing layer is not limited, provided that it is a material impermeable to both air and water, but preferably an elastic foam having closed cells. An elastic foam can strengthen the heat-retaining properties and buoyancy through the cells contained therein.
- In addition, the closing layer may be laminated to the elastic foam layer directly or by inserting another layer in between. In other words, the closing layer just has to be able to close the openings of the recess portions of the elastic foam layer directly or indirectly. Non-limiting examples of another layer include a stretchable fabric such as jersey, a layer using a coating agent, and a coating layer such as metal foil.
- The elastic foam comprising the elastic foam layer or closing layer is preferably Neoprene Rubber (registered trademark; hereinafter omitted), but may be natural rubber, a synthetic rubber such as chloroprene rubber, isoprene rubber, butyl rubber, styrene-butadiene rubber, butadiene rubber, nitrile rubber, ethylenepropylene rubber, or chlorosulfonated polyethylene rubber, or a synthetic resin.
- Preferably, a coating layer containing hollow microcapsules or nanocapsules is laminated to at least one side of the elastic foam layer. Alternatively, in the case of a laminated body having the elastic foam layer and/or the closing layer, the coating layer containing hollow microcapsules or nanocapsules may be also present on at least one surface of the laminated body or between arbitrary layers of the laminated body. The material for the coating layer or microcapsules or nanocapsules is not limited. The containment of hollow microcapsules or nanocapsules in the coating layer can enhance the heat-retaining properties and buoyancy because the laminate contains air cells.
- The material for underwater suits, constituted as mentioned above can be applied to various under water suits, including, for example, a wet suit, a semidry suit, and a dry suit. More specifically, it is suitable for diving, surfing, or triathlon.
- According to the present invention, when the material is used as a wet suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of water can be retained and a film of water is prone to be formed between the body and the suit, because water is accumulated in the recess portions. In addition, not only warmed water is hardly discharged to the outside, but also external cold water less easily penetrates, because the recess portions do not pierce through the elastic foam layer. Thus, a wet suit having a high heat-retaining effect can be made.
- Further, when the material is used as a dry suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of air remains in the recess portions, and the air is hardly discharged to the outside, because the recess portions do not pierce through. Thus, the synergistic effect of the air remaining in the recess portions and the air cells which the elastic foam has enables the sufficient exertion of the heat-retaining properties and buoyancy.
- Further, when the closing layer is laminated to the recessed surface of the elastic foam layer directly or via another layer to close the openings of the recess portions, air is less susceptible to leakage to the outside of the recess portions and water less easily penetrates into the recess portions. Thus, the use thereof in both of the wet suit and dry suit enables the retaining of air in the recess portions, and can impart stable buoyancy to these suits.
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Figure 1 is a cross-sectional view of a material comprising an underwater suit of a first embodiment; -
Figure 2 is a cross-sectional view of a modification of a first embodiment; -
Figure 3 is a cross-sectional view of a material comprising an underwater suit of a second embodiment; -
Figure 4 is a cross-sectional view showing one example of a material used for wet suits for diving; -
Figure 5 is a cross-sectional view showing one example of a material used for wet suits for surfing; and -
Figure 6 is a cross-sectional view showing one example of a material used for wet suits for triathlon. -
- 1
- Recess portion
- 2
- Elastic foam layer
- 3
- Stretchable fabric
- 4
- Coating layer
- 5
- Closing layer
- The embodiments of the present invention are described below with reference to the drawings.
-
Figure 1 is a cross-sectional view of a material comprising an underwater suit of a first embodiment. As shown inFigure 1 , the material composing an underwater suit of this embodiment is composed of anelastic foam layer 2 havingplural recess portions 1 formed on one side thereof, astretchable fabric 3 laminated to the recess non-formed surface of theelastic foam layer 2, and acoating layer 4 formed on the recessed surface ofelastic foam layer 2. The lamination between theelastic foam layer 2 and thestretchable fabric 3 is properly fixed using any adhesive, but may be fixed by another means. In addition, when thecoating layer 4 itself has adhesiveness such as tackiness, it may be laminated using the adhesiveness. The material for underwater suits thus formed is arranged so that the recessed surface faces the side of the body, and subjected to sewing or the like in a three-dimensional manner so as to fit the body to form an underwater suit. - The
elastic foam layer 2 consists of an elastic foam having closed cells. As the elastic foam, neoprene rubber is used, but another natural or synthetic rubber or a synthetic resin may be employed. Theelastic foam layer 2 has a thickness of, but not limited to, about 1 to 10 mm, preferably 1 to 8 mm, more preferably 4 to 5 mm. - A plurality of
recess portions 1 having circular cross sections are formed on one side of theelastic foam layer 2. By way of non-limiting example, therecess portion 1 has an opening diameter of 3 mm, a depth of 1 mm, and a minimal distance to the circumference of an adjacent recess portion of about 4 mm. Two to threerecess portions 1 per cm2 are preferable because sufficient heat-retaining properties and buoyancy can be imparted. Therecess portions 1 are regularly arranged lengthwise and crosswise on one side of theelastic foam layer 2. In this respect, theelastic foam layer 2 may be formed in a unified manner, or may be formed by laminating anelastic foam 2b having a multiplicity of through-holes to anelastic foam 2a having a sheet form as shown inFigure 2 . The portion surrounded by the through-hole and theelastic foam 2a having a sheet form forms therecess portion 1. - As the
stretchable fabric 3, nylon or polyester jersey fabric is used, but another woven fabric or knit employing a synthetic or natural fiber having a good air permeability may be used. Thestretchable fabric 3 is preferable because it can follow body movement owing to the stretchability thereof. Thestretchable fabric 3 has a thickness of 0.2 to 1.5 mm, preferably about 0.5 mm. - The
coating layer 4 contains hollow nanocapsules or microcapsules. The inclusion of air in nanocapsules or microcapsules results in the containment of air cells in thecoating layer 4, which enhances the heat-retaining properties and buoyancy. Thecoating layer 4 coated on the recessed surface of theelastic foam layer 2 may be laminated to only the region excluding therecess portions 1 as shown inFigure 1 , or may be coated along the interior surface of therecess portions 1 so that therecess portions 1 are not wholly filled therewith. - The nanocapsule or microcapsule is a hollow capsule containing no core substance in the shell; the material for the shell is suitably polyurethane resin, but may be composed of a thermoplastic substance selected from the group consisting of polyamide, polybutadiene, acrylonitril, methyl methacrylate and vinylidene chloride resins, or a mixture thereof. The blending amount of the nanocapsule or microcapsule is preferably 1 to 10% by weight based on the coating layer.
- Non-limiting examples of the
coating layer 4 include a layer using a coating agent, or metal foil; a well-known material may be employed if it can contain nanocapsules or microcapsules. Coating agents include, but not limited to, urethane resin, fluororesin, olefin resin and silicon resin coating agents. When provided on the surface of the underwater suit cloth, thecoating layer 4 is preferably an amphipathic coating agent having hydrophilicity and hydrophobicity. Examples thereof include a coating agent containing a surfactant. An underwater suit capable of repelling water in the air and having affinity with water in water to reduce flow resistance can be made. - The metal foil is a metal material made in the form of a film. This metal foil may be used by sticking to another layer using an adhesive or the like. The film-like metal foil is an ultra-thin film having a thickness of about 70 microns and effectively exerts heat-insulating and heat-retaining properties. The fatigue of a wearer due to heat loss can be reduced. A material for the metal foil is preferably titanium, but gold, silver, aluminium, lead, or the like may be also used. Nanocapusules or microcapsules are coated on the surface of a metal foil of any of the above materials using a coating agent so that these capsules are disposed in dots.
- According to the above-described constitution, when the material of this embodiment is used as an underwater suit, in which case the recessed surface of the
elastic foam layer 2 faces the side of the body, a large amount of water can be retained and a film of water is prone to be formed between the body and the suit, because water is accumulated in therecess portions 1. In addition, not only warmed water is hardly discharged to the outside, but also external cold water less easily penetrates because therecess portions 1 do not pierce through theelastic foam layer 2. Thus, the underwater suit will have a high heat-retaining effect. - Further, when the material is used as a dry suit, a large amount of air can remain in the
recess portions 1. The air in therecess portions 1 is hardly discharged to the outside because therecess portions 1 do not pierce through. Thus, the synergistic effect of the air remaining inrecess portions 1 and the closed cells present in theelastic foam layer 2 enables the sufficient exertion of the heat-retaining properties and buoyancy. -
Figure 3 is a cross-sectional view of a material comprising an underwater suit of a second embodiment. As shown inFigure 3 , this embodiment is characterized in that aclosing layer 5 consisting of an elastic foam is laminated to the recessed surface of theelastic foam layer 2 to close the openings of therecess portions 1, and has other basic constitutions similar to those of the above-described first embodiment. The lamination between theelastic foam layer 2 and theclosing layer 5 is properly fixed using any adhesive, but may be fixed by another means. - Specifically, the material composing an underwater suit of the second embodiment is composed of the
elastic foam layer 2 having theplural recess portions 1 formed on one side thereof, astretchable fabric 3 laminated to the recess non-formed surface of theelastic foam layer 2, aclosing layer 5 laminated to the recessed surface of theelastic foam layer 2, andcoating layer 4 laminated to the surface ofclosing layer 5. As shown inFigure 3 , thecoating layer 4 is arranged so as to face the side of the body. In this respect,elastic foam layer 2 may be reversed withclosing layer 5 positioned in the outer side direction. Thus, thecoating layer 4, theelastic foam layer 2, theclosing layer 5 laminated to the recessed surface of theelastic foam layer 2, and thestretchable fabric 3 may be laminated in that order from the side of the body. The material for underwater suits thus formed is subjected to sewing or the like in a three-dimensional manner so as to fit the body to form an underwater suit. - The
closing layer 5 consists of an elastic sheet foam. As the elastic foam, Neoprene Rubber is used as is the case with theelastic foam layer 2, but another natural or synthetic rubber or a synthetic resin may be employed. In addition, the elastic foam has closed cells. Theclosing layer 5 has a thickness of, but not limited to, about 1 to 10 mm, preferably about 4 to 5 mm. - Air can be stored in the
recess portions 1 because the openings of therecess portions 1 formed onelastic foam layer 2 are closed by theclosing layer 5. The air in therecess portions 1 is less susceptible to leakage. Thus, stable heat-retaining properties and buoyancy can be imparted to the underwater suit. This embodiment is suitable for a suit for triathlon requiring buoyancy. - The invention is described below in detail, based on
-
Figure 4 is a cross-sectional view showing one example of a material used for wet suits for diving. As shown, according to the material in this example, acoating layer 4a, anelastic foam layer 2, acoating layer 4b laminated to the recess non-formed surface of theelastic foam layer 2, a secondelastic foam layer 6 having a sheet form, thecoating layer 4b, and astretchable fabric 3 are laminated in that order from the side of the body. The thicknesses of theelastic foam layer 2, the secondelastic foam layer 6, and thestretchable fabric 3 are 5 mm, 5 mm, and 0.5 mm, respectively. In this respect, the thicknesses of theelastic foam layer 2, the secondelastic foam layer 6, and thestretchable fabric 3 may be varied in the ranges of 1 to 10 mm, 1 to 10 mm, and 0.2 to 1.5 mm, respectively. - The second
elastic foam layer 6 consisted of an elastic foam having closed cells. As the elastic foam, Neoprene Rubber is used, but another natural or synthetic rubber or a synthetic resin may be employed. - The
coating layer 4 contains nanocapsules. The nanocapsule used is NC948 from Nomura Trading Co., Ltd., but not limited thereto. An amphipathic coating agent is used for thecoating layer 4a on the side of the recessed surface ofelastic foam layer 2. The amphipathic coating agent is obtained by uniformly mixing 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicon oil, and 2 parts by weight of sodium dodecyl sulfate in the following solvents: 2 parts by weight of acetone, 3 parts by weight of methyl isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol. In this respect, the amount of the polyurethane polymer may be varied in the range of 8 to 18 parts by weight; that of the polytetrafluoroethylene fine powder, 2 to 12 parts by weight; that of silicon oil, 1 to 7 parts by weight; that of sodium dodecyl sulfate, 1 to 7 parts by weight; that of acetone, 1 to 7 parts by weight; that of methyl isobutylene ketone (MIBK), 1 to 8 parts by weight; that of toluene, 50 to 60 parts by weight; that of butyl acetate, 1 to 10 parts by weight; and that of diacetone alcohol, 6 to 16 parts by weight. In addition, metal foils of titanium are used in the coating layers 4b between theelastic foam layer 2 and thesecond foam layer 6 and between thesecond foam layer 6 and thestretchable fabric 3. - When the material is used as a wet suit, in which case the recessed surface of the
elastic foam layer 2 faces the side of the body, a film of water is prone to be formed between the body and the suit because water is accumulated in therecess portions 1. In addition, not only warmed water is hardly discharged to the outside, but also external cold water less easily penetrates, because therecess portions 1 do not pierce through theelastic foam layer 2. Thus, the wet suit will have a high heat-retaining effect. - In addition, when it is used as a dry suit, in which case the recessed surface of the
elastic foam layer 2 faces the side of the body, a large amount of air can be remain in therecess portions 1. The air is hardly discharged to the outside because therecess portions 1 do not pierce through. Thus, the synergistic effect of the air remaining in therecess portions 1 and the closed cells which theelastic foam layer 2 has enables the sufficient exertion of the heat-retaining properties and buoyancy. -
Figure 5 is a cross-sectional view showing one example of a material used for wet suits for surfing. As shown, according to the material in this example, acoating layer 4a, anelastic foam layer 2, acoating layer 4b laminated to the recess non-formed surface of theelastic foam layer 2, astretchable fabric 3, acoating layer 4b, a secondelastic foam layer 6 having a sheet form, and thecoating layer 4a are laminated in that order from the side of the body. Thestretchable fabric 3 hardly absorbs water because it positions between theelastic foam layer 2 and the secondelastic foam layer 6. Thus, this reduces a change in weight of the whole material. The thicknesses of theelastic foam layer 2, the secondelastic foam layer 6, and thestretchable fabric 3 are 5 mm, 5 mm, and 0.5 mm, respectively. In this respect, the thicknesses ofelastic foam layer 2, secondelastic foam layer 6, andjersey fabric 3 may be varied in the ranges of 1 to 10 mm, 1 to 10 mm, and 0.2 to 1.5 mm, respectively. - The
coating layer 4b contains nanocapsules. The nanocapsule used is NC948 from Nomura Trading Co., Ltd., but not limited thereto. An amphipathic coating agent is used for the coating layers 4a on the recessed surface of theelastic foam layer 2 and the surface of the secondelastic foam layer 6. The amphipathic coating agent is obtained by uniformly mixing 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicon oil, and 2 parts by weight of sodium dodecyl sulfate in the following solvents: 2 parts by weight of acetone, 3 parts by weight of methyl isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol. In this respect, the amount of the polyurethane polymer may be varied in the range of 8 to 18 parts by weight; that of the polytetrafluoroethylene fine powder, 2 to 12 parts by weight; that of silicon oil, 1 to 7 parts by weight; that of sodium dodecyl sulfate, 1 to 7 parts by weight; that of acetone, 1 to 7 parts by weight; that of methyl isobutylene ketone (MIBK), 1 to 8 parts by weight; that of toluene, 50 to 60 parts by weight; that of butyl acetate, 1 to 10 parts by weight; and that of diacetone alcohol, 6 to 16 parts by weight. In addition, metal foils of titanium are used for the coating layers 4b between theelastic foam layer 2 and thestretchable fabric 3 and between thestretchable fabric 3 and the secondelastic foam layer 6. - When the material of this embodiment is used as a wet suit, in which case the recessed surface of the
elastic foam layer 2 faces the side of the body, a film of water is prone to be formed between the body and the suit because water is accumulated in therecess portions 1. In addition, not only warmed water is hardly discharged to the outside, but also external cold water less easily penetrates, becauserecess portions 1 do not pierce through theelastic foam layer 2. Thus, the wet suit will have a high heat-retaining effect. - In addition, when it is used as a dry suit, in which case the recessed surface of the
elastic foam layer 2 faces the side of the body, a large amount of air can remain in therecess portions 1. The air is hardly discharged to the outside becauserecess portions 1 do not pierce through. Thus, the synergistic effect of the air remaining inrecess portions 1 and the closed cells which theelastic foam layer 2 has enables the sufficient exertion of the heat-retaining properties and buoyancy. -
Figure 6 is a cross-sectional view showing one example of a material used for wet suits for triathlon. As shown, according to the material in this example, acoating layer 4a, aclosing layer 5, astretchable fabric 3, anelastic foam layer 2, a secondelastic foam layer 6, andcoating layer 4a are laminated in that order from the side of the body. Thestretchable fabric 3 hardly absorbs water because it is positioned between the elastic foam layer 2 (and second elastic foam layer 6) and theclosing layer 5. Thus, this reduces a change in weight of the whole material. The thicknesses of theclosing layer 5, thestretchable fabric 3, theelastic foam layer 2, and the secondelastic foam layer 6 are 5 mm, 0.5 mm, 5 mm, and 5 mm, respectively. In this respect, the thicknesses ofclosing layer 5,jersey fabric 3,elastic foam layer 2, and secondelastic foam layer 6 may be varied in the ranges of 1 to 10 mm, 0.2 to 1.5 mm, 1 to 10 mm, and 1 to 10 mm, respectively. - The
coating layer 4a contains nanocapsules. The nanocapsule used is NC948 from Nomura Trading Co., Ltd., but not limited thereto. An amphipathic coating agent is used for the coating layers 4a on the surface of theclosing layer 5 and the surface of the secondelastic foam layer 6. The amphipathic coating agent is obtained by uniformly mixing 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicon oil, and 2 parts by weight of sodium dodecyl sulfate in the following solvents: 2 parts by weight of acetone, 3 parts by weight of methyl isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol. In this respect, the amount of the polyurethane polymer may be varied in the range of 8 to 18 parts by weight; that of the polytetrafluoroethylene fine powder, 2 to 12 parts by weight; that of silicon oil, 1 to 7 parts by weight; that of sodium dodecyl sulfate, 1 to 7 parts by weight; that of acetone, 1 to 7 parts by weight; that of methyl isobutylene ketone (MIBK), 1 to 8 parts by weight; that of toluene, 50 to 60 parts by weight; that of butyl acetate, 1 to 10 parts by weight; and that of diacetone alcohol, 6 to 16 parts by weight. - Air can be stored in the
recess portions 1 because the openings of therecess portions 1 on theelastic foam layer 2 are closed by theclosing layer 5. Thus, stable heat-retaining properties and buoyancy can be imparted to the underwater suit. This embodiment is suitable for a suit for triathlon requiring buoyancy. - According to the invention, when the material is used as a wet suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of water can be retained and a film of water is prone to be formed between the body and the suit, because water is accumulated in the recess portions. In addition, not only warmed water is hardly discharged to the outside, but also external cold water less easily penetrates because the recess portions do not pierce through the elastic foam layer. Thus, a wet suit having a high heat-retaining effect can be made.
- Further, when it is used as a dry suit, in which case the recess portions of the elastic foam layer are opened toward the side of the body, a large amount of air remains in the recess portions, and the air is hardly discharged to the outside, because the recess portions do not pierce through. Thus, the synergistic effect of the air remaining in the recess portions and the air cells which the elastic foam has enables the sufficient exertion of the heat-retaining properties and buoyancy.
- Further, when a closing layer is laminated to the recessed surface of the elastic foam layer directly or via another layer to close the openings of the recess portions, air is less susceptible to leakage to the outside of the recess portions and water less easily penetrates into the recess portions. Thus, the use thereof in both of the wet suit and dry suit enables the retaining of air in the recess portions, and can impart stable buoyancy to these suits.
Claims (7)
- A material for underwater suits comprising an elastic foam layer having plural recess portions formed on at least one side thereof.
- The material for underwater suits according to claim 1, wherein a closing layer impermeable both air and water is laminated to the recessed surface of said elastic foam layer directly or via another layer to close the openings of the recess portions.
- The material for underwater suits according to claim 1 or 2, wherein a coating layer containing hollow microcapsules or nanocapsules is laminated to at least one side of said elastic foam layer.
- The material for underwater suits according to claim 1 or 2, wherein a coating layer containing hollow microcapsules or nanocapsules is present on at least one surface of a laminated body having said elastic foam layer and/or said closing layer or between arbitrary layers of the laminated body.
- An underwater suit characterized by comprising the material for underwater suits according to any of claims 1 to 4.
- A wet suit comprising the material for underwater suits according to claim 1, wherein the recess portions of said elastic foam layer are arranged so as to face the side of the body.
- A suit for triathlon comprising the material for underwater suits according to claim 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/015749 WO2007026395A1 (en) | 2005-08-30 | 2005-08-30 | Material for underwater suit and underwater suit making use of the same |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1974619A1 true EP1974619A1 (en) | 2008-10-01 |
EP1974619A4 EP1974619A4 (en) | 2011-12-21 |
EP1974619B1 EP1974619B1 (en) | 2019-06-12 |
Family
ID=37808501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05781509.4A Active EP1974619B1 (en) | 2005-08-30 | 2005-08-30 | Material for underwater suit and underwater suit making use of the same |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1974619B1 (en) |
JP (1) | JP5324097B2 (en) |
KR (1) | KR101039303B1 (en) |
CN (1) | CN100571554C (en) |
HK (1) | HK1122197A1 (en) |
TW (1) | TW200724043A (en) |
WO (1) | WO2007026395A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2359706A1 (en) * | 2010-02-23 | 2011-08-24 | Furio Orologio | Thermally insulated personal articles |
US8221871B2 (en) | 2006-04-19 | 2012-07-17 | Furio Orologio | Metallized polymeric film reflective insulation material |
US8327601B2 (en) | 2006-04-19 | 2012-12-11 | Furio Orologio | Metallized polymeric film reflective insulation material |
CN103974641A (en) * | 2011-08-19 | 2014-08-06 | 赫雷国际有限责任公司 | Grooved wetsuit |
WO2014167295A1 (en) * | 2013-04-11 | 2014-10-16 | John Gordon | Improvements to diving suit and method of manufacture of the same |
US10112364B2 (en) | 2014-09-19 | 2018-10-30 | Furio Orologio | Thermally insulated personal article and sleeping bag liners |
US10828863B2 (en) | 2014-09-19 | 2020-11-10 | Furio Orologio | Thermally insulated sheet |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190183189A1 (en) * | 2016-08-18 | 2019-06-20 | Pommello Inc. | Fabric having heat retaining properties |
KR102383942B1 (en) * | 2019-12-19 | 2022-04-08 | 김종훈 | Rash guard with multiple air cells |
CN111806004A (en) * | 2020-07-15 | 2020-10-23 | 曾静 | Cloth for multifunctional diving suit and manufacturing method thereof |
KR20220046797A (en) | 2020-10-08 | 2022-04-15 | 장예원 | Wet suit to block water ingress |
Citations (3)
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GB2268440A (en) * | 1992-07-03 | 1994-01-12 | Nigel John Middleton | Thermal insulative fabric |
GB2270829A (en) * | 1992-09-09 | 1994-03-30 | Nigel John Middleton | Thermoinsulative protective clothing system |
US5359735A (en) * | 1991-03-18 | 1994-11-01 | Stockwell Gregg M | Surface coating process |
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JPS60176997U (en) * | 1984-04-19 | 1985-11-25 | シンギー株式会社 | Structure of bending and contraction part of wetsuit |
JPS62100296U (en) * | 1985-12-17 | 1987-06-26 | ||
JPH03125694U (en) * | 1990-04-02 | 1991-12-18 | ||
JP3072358B2 (en) * | 1993-04-30 | 2000-07-31 | 株式会社タンク | wetsuit |
JP3603533B2 (en) * | 1997-04-23 | 2004-12-22 | 東レ株式会社 | Knitted fabric for swimsuits and swimwear |
JP3049430U (en) * | 1997-12-02 | 1998-06-09 | 帝人株式会社 | Thermal insulation underwater clothes |
CN2382248Y (en) * | 1999-05-29 | 2000-06-14 | 李明悦 | Buoyang swimming suit |
JP2004300598A (en) * | 2003-03-31 | 2004-10-28 | Toray Ind Inc | Fiber structure |
JP3114295U (en) * | 2005-05-18 | 2005-10-27 | ヌーベルバーグ・インターナショナル株式会社 | wetsuit |
-
2005
- 2005-08-30 CN CNB2005800513482A patent/CN100571554C/en active Active
- 2005-08-30 WO PCT/JP2005/015749 patent/WO2007026395A1/en active Application Filing
- 2005-08-30 JP JP2007533068A patent/JP5324097B2/en active Active
- 2005-08-30 EP EP05781509.4A patent/EP1974619B1/en active Active
- 2005-08-30 KR KR1020087000559A patent/KR101039303B1/en active IP Right Grant
-
2006
- 2006-08-15 TW TW095129929A patent/TW200724043A/en unknown
-
2008
- 2008-12-18 HK HK08113739.1A patent/HK1122197A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5359735A (en) * | 1991-03-18 | 1994-11-01 | Stockwell Gregg M | Surface coating process |
GB2268440A (en) * | 1992-07-03 | 1994-01-12 | Nigel John Middleton | Thermal insulative fabric |
GB2270829A (en) * | 1992-09-09 | 1994-03-30 | Nigel John Middleton | Thermoinsulative protective clothing system |
Non-Patent Citations (1)
Title |
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See also references of WO2007026395A1 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8221871B2 (en) | 2006-04-19 | 2012-07-17 | Furio Orologio | Metallized polymeric film reflective insulation material |
US8327601B2 (en) | 2006-04-19 | 2012-12-11 | Furio Orologio | Metallized polymeric film reflective insulation material |
US8343614B2 (en) | 2006-04-19 | 2013-01-01 | Furio Orologio | Metallized polymeric film reflective insulation material |
US8936847B2 (en) | 2006-04-19 | 2015-01-20 | Promethean Insulation Technology Llc | Metallized polymeric film reflective insulation material |
EP2359706A1 (en) * | 2010-02-23 | 2011-08-24 | Furio Orologio | Thermally insulated personal articles |
CN103974641A (en) * | 2011-08-19 | 2014-08-06 | 赫雷国际有限责任公司 | Grooved wetsuit |
WO2014167295A1 (en) * | 2013-04-11 | 2014-10-16 | John Gordon | Improvements to diving suit and method of manufacture of the same |
US10112364B2 (en) | 2014-09-19 | 2018-10-30 | Furio Orologio | Thermally insulated personal article and sleeping bag liners |
US10828863B2 (en) | 2014-09-19 | 2020-11-10 | Furio Orologio | Thermally insulated sheet |
Also Published As
Publication number | Publication date |
---|---|
JP5324097B2 (en) | 2013-10-23 |
HK1122197A1 (en) | 2009-05-15 |
EP1974619B1 (en) | 2019-06-12 |
CN101237786A (en) | 2008-08-06 |
WO2007026395A1 (en) | 2007-03-08 |
JPWO2007026395A1 (en) | 2009-03-05 |
KR101039303B1 (en) | 2011-06-08 |
TWI378779B (en) | 2012-12-11 |
KR20080051126A (en) | 2008-06-10 |
TW200724043A (en) | 2007-07-01 |
EP1974619A4 (en) | 2011-12-21 |
CN100571554C (en) | 2009-12-23 |
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