JPWO2007026395A1 - Material for underwater suit and underwater suit using it - Google Patents

Abstract

A material for an underwater suit, comprising an elastic foam layer 2 made of an elastic foam and having a plurality of recesses 1 formed on at least one surface thereof. When the elastic foam layer 2 is used as a wet suit with the opening of the recess facing the body side, water accumulates in the recess 1 and a water film is easily formed between the body and the suit. Further, since the concave portion 1 does not penetrate the elastic foam layer 2, warm water is not easily discharged to the outside, and cold water from the outside is also difficult to enter. Therefore, the heat retaining effect is high. Further, when used as a dry suit, air can be retained in the concave portion 1, so that the heat retaining effect and buoyancy are high.

Description

  TECHNICAL FIELD The present invention relates to an underwater suit material and an underwater suit using the same.

  Underwater suits include wet suits and dry suits, each of which has a diving suit, a surfing suit, and a triathlon suit. The wet suit obtains a heat retaining effect by using water in the suit. That is, water is stored between the body and the wet suit, and the water is warmed by the body temperature to exert a heat retaining effect. On the other hand, the dry suit has a structure that does not allow seawater to enter the suit and keeps the inside of the suit in a dry state to obtain a heat retaining effect.

  As a material for these underwater suits, generally, elastic foam such as natural or synthetic rubber having a stretchable cloth such as a jersey cloth attached to the surface thereof is used. For example, in Patent Document 1, a foam material is composed of a cloth material in which a stretchable woven or knitted material is attached to the front and back surfaces, and water enters a gap between the cloth material and the wearer's body due to water immersion. A wetsuit in which the foamable rubber material is provided with holes in a part or the whole of the wetsuit is disclosed.

Since the holes provided in the foamable rubber material have good air permeability, give the wearer an uncomfortable feeling such as heat or drowsiness in the case of competitions such as triathlon that is exercised on the ground while wearing a wetsuit. There is no. Further, when the water moves from the water to the ground, the water infiltrated into the wetsuit by the water is instantaneously discharged to the outside together with the air, so that it can be suitably worn without affecting the motility.
JP-A-6-31692 (see claim 1, paragraph 0017)

  However, the wet suit described in Patent Document 1 has an advantage that it has good air permeability on land because the holes provided in the foamable rubber material penetrate therethrough, but it is warm in the suit in water. Water is discharged through the hole to the outside of the suit, and cold outside water flows into the suit through the hole. Therefore, the heat retaining effect is low.

  Further, the wet suit described in Patent Document 1 is provided with heat retention and buoyancy by the foaming rubber material, but its effect is not sufficient because the foaming rubber material can hold a small amount of air. Even if air is present in the hole, it is discharged and cannot be retained because the hole is formed through the foamable rubber material as described above. Therefore, sufficient heat retention and buoyancy cannot be provided.

  In view of the above problems, an object of the present invention is to provide an underwater suit material having a high heat retaining effect and high buoyancy and an underwater suit using the same.

  In order to achieve the above object, the present invention is a material for underwater suits having an elastic foam layer having a plurality of recesses formed on at least one surface. When used as a wet suit with the recess of the elastic foam layer opening to the body side, a large amount of water can be retained because water accumulates in the recess and a water film is formed between the body and the suit. It is easy to be done. Furthermore, since the recess does not penetrate the elastic foam layer, warm water is not easily discharged to the outside, and cold water from the outside is also unlikely to enter. Therefore, the heat retaining effect is high.

  Further, when the elastic foam layer is used as a dry suit with the concave portion opening to the body side, a large amount of air can be stored in the concave portion. The air is difficult to be discharged to the outside because the recess does not penetrate. Therefore, a sufficient heat retaining property and buoyancy can be exhibited by the synergistic effect of the air accumulated in the recess and the bubbles of the elastic foam.

  The "material for an underwater suit having an elastic foam layer" is a concept including both a single-layer material composed only of an elastic foam layer and a laminated material in which another layer is laminated on the elastic foam layer. .. Further, the recesses may be formed on both sides of the elastic foam layer.

  The size of the opening of the recess is, for example, 2 to 6 mm in diameter, preferably 4 mm in diameter. The depth of the recess is, for example, 0.5 to 5 mm, preferably 1 to 4 mm. If it is out of the above range, good heat retaining effect and buoyancy cannot be obtained.

  The elastic foam layer may be laminated with another layer, may be laminated on the surface on which the concave portion is not formed (hereinafter referred to as the concave portion non-forming surface), or may be laminated on the concave portion forming surface. May be. Examples of the other layer include, but are not limited to, elastic foam, stretchable cloth such as jersey cloth, a layer formed of a coating agent, and a coating layer such as a metal foil.

  When stacking another layer on the recess forming surface, the opening of the recess is closed by the other layer, which is suitable when it is desired to retain air in the recess to enhance the heat retention and buoyancy of the underwater suit. is there. Specifically, a non-air-permeable and water-impermeable closing layer is laminated directly or via another layer on the recess forming surface of the elastic foam layer to close the opening of the recess. At this time, the entire inside of the recess is not filled with the blocking layer or another layer. The recess does not penetrate the elastic foam layer, and its opening is closed by a blocking layer that is impermeable and water impermeable, so that air does not easily leak to the outside of the recess and water enters the recess. Hard to do. Therefore, air can be retained in the recess, and stable buoyancy can be provided. In this case, it is suitable for a suit for triathlon which requires buoyancy in water.

  The material for the blocking layer is not limited as long as it is a material that is impermeable to air and water impermeable, but an elastic foam having closed cells is preferable. If it is an elastic foam, the heat retention and buoyancy can be reinforced by the bubbles contained therein.

  Further, the blocking layer may be directly laminated on the elastic foam layer, or may be laminated with another layer interposed therebetween. That is, it is sufficient that the closing layer can directly or indirectly close the recess opening of the elastic foam layer. Examples of the other layer include stretchable cloth such as jersey cloth, a layer formed of a coating agent, and a coating layer such as a metal foil, but are not limited thereto.

  As the elastic foam constituting the elastic foam layer and the closing layer, neoprene rubber (registered trademark, hereinafter omitted) is preferable, but other natural rubber, chloroprene rubber, isoprene rubber, butyl rubber, styrene butadiene rubber, butadiene rubber, nitrile rubber Synthetic rubber or synthetic resin such as ethylene propylene rubber or chlorosulfonated polyethylene rubber may be used.

  It is preferable to laminate a coating layer containing hollow microcapsules or nanocapsules on at least one surface of the elastic foam layer. Alternatively, in the case of a laminate having an elastic foam layer and/or a closing layer, a coating layer containing hollow microcapsules or nanocapsules on at least one surface of the laminate or between any layers of the laminate. May be present. The material for the coating layer and the microcapsules or nanocapsules is not limited. By containing hollow microcapsules or nanocapsules in the coating layer, bubbles are contained therein, so that heat retention and buoyancy can be enhanced.

  The underwater suit material having the above-described configuration can be applied to various underwater suits, for example, wet suit, semi-dry suit, and dry suit. More specifically, it is suitable for diving, surfing, and triathlon.

  According to the present invention, when the elastic foam layer is used as a wet suit so that the recess is opened toward the body side, a large amount of water can be retained because water accumulates in the recess and water can be retained between the body and the suit. A film is easily formed. Further, since the recess does not penetrate the elastic foam layer, warm water is not easily discharged to the outside, and cold water from the outside does not easily enter. Therefore, an underwater suit with a high heat retaining effect can be obtained.

  Further, when the elastic foam layer is used as a dry suit with the concave portion opening to the body side, a large amount of air is accumulated in the concave portion and the air is difficult to be discharged to the outside because the concave portion does not penetrate. Therefore, a sufficient heat retaining property and buoyancy can be exhibited by the synergistic effect of the air accumulated in the recess and the bubbles of the elastic foam.

  Furthermore, if a closing layer is laminated on the recess forming surface of the elastic foam layer directly or via another layer to close the opening of the recess, it is difficult for air to leak out of the recess and water enters the recess. Hard to do. Therefore, regardless of whether it is used as a wet suit or a dry suit, it is possible to retain air in the concave portion and provide stable buoyancy.

Sectional drawing of the material which comprises the underwater suit of 1st Embodiment Sectional drawing of the raw material which shows the modification of 1st Embodiment. Sectional drawing of the material which comprises the underwater suit of 2nd Embodiment Sectional drawing which shows one Example of the material used for the wet suit for diving Sectional drawing which shows one Example of the material used for the wet suit for surfing Sectional drawing which shows one Example of the material used for the wet suit for triathlon

Explanation of symbols

1 Recess 2 Elastic Foam Layer 3 Stretchable Fabric 4 Coating Layer 5 Closing Layer

    Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a sectional view of a material forming the underwater suit of the first embodiment. As shown in FIG. 1, the material constituting the underwater suit of the present embodiment is laminated on the elastic foam layer 2 having a plurality of recesses 1 formed on one surface and on the surface not having the recesses of the elastic foam layer 2. And the coating layer 4 formed on the recessed surface of the elastic foam layer 2. The lamination of the elastic foam layer 2 and the stretchable fabric 3 is appropriately fixed by an arbitrary adhesive, but may be fixed by other means. Further, when the coating layer 4 itself has an adhesive force such as an adhesive force, the coating layer 4 may be laminated by the adhesive force. An underwater suit is formed by arranging the material for an underwater suit thus formed so that the recess forming surface faces the body side and performing three-dimensional sewing along the body.

  The elastic foam layer 2 is made of an elastic foam having closed cells. Although neoprene rubber is used as the elastic foam, other natural or synthetic rubber or synthetic resin may be used. The elastic foam layer 2 has a thickness of about 1 to 10 mm, preferably 1 to 8 mm, more preferably 4 to 5 mm, but is not limited thereto.

A recess 1 having a plurality of circular cross sections is formed on one surface of the elastic foam layer 2. The recess 1 has an opening diameter of 3 mm and a depth of 1 mm, and the shortest distance between adjacent recess peripheral edges is about 4 mm, but the invention is not limited to this. It is preferable that the recesses 1 are formed in a number of 2 to 3 per cm ² because sufficient heat retention and buoyancy can be provided. The recesses 1 are regularly arranged vertically and horizontally on one surface of the elastic foam layer 2. The elastic foam layer 2 may be integrally formed, or, as shown in FIG. 2, is formed by laminating an elastic foam body 2b having a large number of through holes on a plate-shaped elastic foam body 2a. You may. The portion surrounded by the through hole and the plate-shaped elastic foam body 2a becomes the recess 1.

  As the stretchable cloth 3, a nylon or polyester jersey cloth is used, but in addition, a woven or knitted fabric using synthetic fibers or natural fibers having good air permeability may be used. The jersey cloth 3 is preferable because it can follow the movement of the body due to its elasticity. 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. Due to the air contained in the nanocapsules or microcapsules, the coating layer 4 contains bubbles, and the heat retention effect and the buoyancy are improved. The coating layer 4 coated on the recess forming surface of the elastic foam layer 2 may be laminated only on the portion other than the recess 1 as shown in FIG. 1, or on the inner surface of the recess 1 so as not to completely fill the recess 1. You may coat along.

  Nanocapsules or microcapsules are hollow capsules that do not contain a core substance in the shell, and polyurethane resin is suitable as the material of the shell wall, but in addition, polyamide, polybutadiene, acrylonitrile, methyl methacrylate And a thermoplastic material selected from the group of vinylidene chloride resins, or a mixed thermoplastic material thereof. The content of the nanocapsules or microcapsules is preferably 1 to 10% by weight based on the coating layer.

  Examples of the coating layer 4 include, but are not limited to, a layer formed of a coating agent and a metal foil, and any known layer can be used as long as it can contain nanocapsules or microcapsules. Examples of the coating agent include, but are not limited to, urethane resin-based, fluororesin-based, olefin resin-based, and silicon resin-based coating agents. When the coating layer 4 is provided on the surface of the underwater suit cloth, an amphipathic coating agent having hydrophilicity and hydrophobicity is preferable. An example of such a substance is a coating agent containing a surfactant. The underwater suit can repel water in the air and repel water in water to reduce running resistance.

  In addition, the metal foil is a film made of a metal material. This metal foil may be used by adhering it to another layer with an adhesive or the like. The film-shaped metal foil is an ultrathin film having a thickness of about 70 μm and exhibits effective heat insulation and heat retention. The wearer can reduce fatigue due to heat loss. Titanium is preferable as the material of the metal foil, but other materials such as gold, silver, aluminum and lead may be used. The surface of the metal foil of these materials is coated with a coating agent so that nanocapsules or microcapsules are arranged in a dot shape.

  According to the above configuration, if the elastic foam layer 2 is used as an underwater suit with the recess forming surface facing the body side, water accumulates in the recess 1 so that a large amount of water can be held and the body and suit A film of water is easily formed between and. Further, since the concave portion 1 does not penetrate the elastic foam layer 2, warm water is not easily discharged to the outside, and cold water from the outside is also unlikely to enter. Therefore, the heat retaining effect is high.

  If used as a dry suit, a large amount of air can be stored in the recess 1. Since the recess 1 does not penetrate, the air in the recess 1 is difficult to be discharged to the outside. Therefore, due to the synergistic effect of the air accumulated in the concave portion 1 and the closed cells of the elastic foam layer 2, sufficient heat retention and buoyancy can be exhibited.

<Second Embodiment>
FIG. 3 is a sectional view of a material forming the underwater suit of the second embodiment. As shown in FIG. 3, the present embodiment is characterized in that the closing layer 5 made of an elastic foam is laminated on the surface of the elastic foam layer 2 on the side where the recess is formed to close the opening of the recess 1. However, the other basic configuration is the same as that of the first embodiment. The lamination of the elastic foam layer 2 and the closing layer 5 is appropriately fixed by an arbitrary adhesive, but may be fixed by other means.

  Specifically, the material forming the underwater suit of the second embodiment is made of elastic foam layer 2 having a plurality of recesses 1 formed on one surface, and stretchability laminated on the surface not having the recesses of elastic foam layer 2. The cloth 3 includes a closing layer 5 laminated on the surface of the elastic foam layer 2 on which the concave portion is formed, and a coating layer 4 laminated on the surface of the closing layer 5. As shown in FIG. 3, the coating layer 4 side is arranged so as to be the body side. It should be noted that the elastic foam layer 2 may be inverted and the blocking layer 5 may be positioned outward. That is, the coating layer 4, the elastic foam layer 2, the closing layer 5 laminated on the recess forming surface of the elastic foam layer 2, and the stretchable fabric 3 may be laminated in this order from the body side. The underwater suit is formed by three-dimensionally sewing the underwater suit material thus formed along the human body.

  The blocking layer 5 is made of a plate-shaped elastic foam. Like the elastic foam layer 2, neoprene rubber is used as the elastic foam, but other natural or synthetic rubber or synthetic resin may be used. The elastic foam also has closed cells. The thickness of the blocking layer 5 is about 1 to 10 mm, preferably about 4 to 5 mm, but is not limited to this.

  Since the opening of the recess 1 formed in the elastic foam layer 2 is closed by the closing layer 5, air can be stored in the recess 1. The air in the recess 1 is unlikely to leak. Therefore, it is possible to impart stable heat retention and buoyancy to the underwater suit. This embodiment is suitable for a triathlon suit that requires buoyancy.

  Hereinafter, the present invention will be described in detail with reference to Examples.

<Example 1>
FIG. 4 is a cross-sectional view showing an example of a material used for a wet suit for diving. As shown in the drawing, the material in this embodiment is, from the body side, a coating layer 4a, an elastic foam layer 2, a coating layer 4b laminated on the recessed surface of the elastic foam layer 2 and a plate-shaped second elastic layer. The foam layer 6, the coating layer 4b, and the jersey cloth 3 are laminated in this order. The elastic foam layer 2 has a thickness of 5 mm, the second elastic foam layer 6 has a thickness of 5 mm, and the jersey cloth 3 has a thickness of 0.5 mm. The elastic foam layer 2 may have a thickness of 1 to 10 mm, the second elastic foam layer 6 may have a thickness of 1 to 10 mm, and the jersey cloth 3 may have a thickness of 0.2 to 1.5 mm.

  The second elastic foam layer 6 is made of an elastic foam having closed cells. Although neoprene rubber is used as the elastic foam, other natural or synthetic rubber or synthetic resin may be used.

  The coating layer 4 contains nanocapsules. NC948 manufactured by Nomura Trading Co., Ltd. is used as the nanocapsule, but the nanocapsule is not limited thereto. An amphipathic coating agent is used for the coating layer 4a on the side of the elastic foam layer 2 where the concave portion is formed. The amphipathic coating agent comprises 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicone oil and 2 parts by weight of sodium dodecyl sulfate, the following solvent, 2 parts by weight of acetone, and methyl. 3 parts by weight of isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol were uniformly mixed. The polyurethane polymer is 8 to 18 parts by weight, the polytetrafluoroethylene fine powder is 2 to 12 parts by weight, the silicone oil is 1 to 7 parts by weight, sodium dodecyl sulfate is 1 to 7 parts by weight, and the acetone is 1 to 7 parts by weight. By weight, methyl isobutylene ketone (MIBK) may be varied between 1 to 8 parts by weight, toluene at 50 to 60 parts by weight, butyl acetate at 1 to 10 parts by weight, and diacetone alcohol at 6 to 16 parts by weight. .. Further, titanium metal foil is used for the coating layer 4b between the elastic foam layer 2 and the second elastic foam layer 6 and between the second elastic foam layer 6 and the jersey cloth 3, respectively. ..

  If the elastic foam layer 2 is used as a wet suit with the concave portion forming surface facing the body side, water accumulates in the concave portion 1, so that a water film is easily formed between the body and the suit. Further, since the concave portion 1 does not penetrate the elastic foam layer 2, warm water is not easily discharged to the outside, and cold water from the outside is also difficult to enter. Therefore, the heat retaining effect is high.

  Further, when the elastic foam layer 2 is used as a dry suit so that the recess forming surface faces the body side, a large amount of air can be stored in the recess 1. Since the recess 1 does not penetrate, air is difficult to be discharged to the outside. Therefore, due to the synergistic effect of the air accumulated in the concave portion 1 and the closed cells of the elastic foam layer 2, sufficient heat retention and buoyancy can be exhibited.

<Example 2>
FIG. 5: is sectional drawing which shows one Example of the material used for the wet suit for surfing. As shown in the figure, the material in this embodiment is, from the body side, the coating layer 4a, the elastic foam layer 2, the coating layer 4b laminated on the recessed surface of the elastic foam layer 2, the jersey cloth 3, the coating layer. 4b, the plate-like second elastic foam layer 6, and the coating layer 4a are laminated in this order. Since the jersey cloth 3 is located between the elastic foam layer 2 and the second elastic foam layer 6, it hardly absorbs water. Therefore, the change in weight of the entire material is small. The elastic foam layer 2 has a thickness of 5 mm, the second elastic foam layer 6 has a thickness of 5 mm, and the jersey cloth 3 has a thickness of 0.5 mm. The elastic foam layer 2 may have a thickness of 1 to 10 mm, the second elastic foam layer 6 may have a thickness of 1 to 10 mm, and the jersey cloth 3 may have a thickness of 0.2 to 1.5 mm.

  The coating layer 4b contains nanocapsules. NC948 manufactured by Nomura Trading Co., Ltd. is used as the nanocapsule, but the nanocapsule is not limited thereto. An amphipathic coating agent is used for the recessed surface of the elastic foam layer 2 and the coating layer 4a on the surface of the second elastic foam layer 6. The amphipathic coating agent comprises 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicone oil and 2 parts by weight of sodium dodecyl sulfate, the following solvent, 2 parts by weight of acetone, and methyl. 3 parts by weight of isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol were uniformly mixed. The polyurethane polymer is 8 to 18 parts by weight, the polytetrafluoroethylene fine powder is 2 to 12 parts by weight, the silicone oil is 1 to 7 parts by weight, sodium dodecyl sulfate is 1 to 7 parts by weight, and the acetone is 1 to 7 parts by weight. By weight, methyl isobutylene ketone (MIBK) may be varied between 1 to 8 parts by weight, toluene at 50 to 60 parts by weight, butyl acetate at 1 to 10 parts by weight, and diacetone alcohol at 6 to 16 parts by weight. .. Metallic foils of titanium are used for the coating layers 4b between the elastic foam layer 2 and the jersey cloth 3 and between the jersey cloth 3 and the second elastic foam layer 6, respectively.

  If the elastic foam layer 2 is used as a wet suit with the concave portion forming surface facing the body side, water accumulates in the concave portion 1, so that a water film is easily formed between the body and the suit. Further, since the concave portion 1 does not penetrate the elastic foam layer 2, warm water is not easily discharged to the outside, and cold water from the outside is also unlikely to enter. Therefore, the heat retaining effect is high.

  Further, when the elastic foam layer 2 is used as a dry suit so that the recess forming surface faces the body side, a large amount of air can be stored in the recess 1. Since the recess 1 does not penetrate, air is difficult to be discharged to the outside. Therefore, due to the synergistic effect of the air accumulated in the concave portion 1 and the closed cells of the elastic foam layer 2, sufficient heat retention and buoyancy can be exhibited.

<Example 3>
FIG. 6 is a sectional view showing an embodiment of a material used for a wetsuit for triathlon. As shown in the drawing, the material in this embodiment is laminated in this order from the body side, including the coating layer 4a, the closing layer 5, the jersey cloth 3, the elastic foam layer 2, the second elastic foam layer 6, and the coating layer 4a. .. Since the jersey cloth 3 is located between the elastic foam layer 2 and the second elastic foam layer 6 and the closing layer 5, it is difficult to absorb water. Therefore, the change in weight of the entire material is small. The closing layer 5 has a thickness of 5 mm, the jersey cloth 3 has a thickness of 0.5 mm, the elastic foam layer 2 has a thickness of 5 mm, and the second elastic foam layer 6 has a thickness of 5 mm. The closing layer 5 has a thickness of 1 to 10 mm, the jersey cloth 3 has a thickness of 0.2 to 1.5 mm, the elastic foam layer 2 has a thickness of 1 to 10 mm, and the second elastic foam layer 6 has a thickness of 1 to 10. You may change in the range of 10 mm.

  The coating layer 4a contains nanocapsules. NC948 manufactured by Nomura Trading Co., Ltd. is used as the nanocapsule, but the nanocapsule is not limited thereto. An amphipathic coating agent is used for the coating layer 4a on the surface of the blocking layer 5 and the surface of the second elastic foam layer 6. The amphipathic coating agent comprises 13 parts by weight of a polyurethane polymer, 7 parts by weight of polytetrafluoroethylene fine powder, 2 parts by weight of silicone oil and 2 parts by weight of sodium dodecyl sulfate, the following solvent, 2 parts by weight of acetone, and methyl. 3 parts by weight of isobutylene ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol were uniformly mixed. The polyurethane polymer is 8 to 18 parts by weight, the polytetrafluoroethylene fine powder is 2 to 12 parts by weight, the silicone oil is 1 to 7 parts by weight, sodium dodecyl sulfate is 1 to 7 parts by weight, and the acetone is 1 to 7 parts by weight. By weight, methyl isobutylene ketone (MIBK) may be varied between 1 to 8 parts by weight, toluene at 50 to 60 parts by weight, butyl acetate at 1 to 10 parts by weight, and diacetone alcohol at 6 to 16 parts by weight. ..

  Since the opening of the recess 1 of the elastic foam layer 2 is closed by the closing layer 5, air can be stored in the recess 1. Therefore, it is possible to impart stable heat retention and buoyancy to the underwater suit. In this case, it is suitable for a suit for triathlon which requires buoyancy.

  According to the present invention, when the elastic foam layer is used as a wet suit so that the recess is opened toward the body side, a large amount of water can be retained because water accumulates in the recess and water can be retained between the body and the suit. A film is easily formed. Further, since the recess does not penetrate the elastic foam layer, warm water is not easily discharged to the outside, and cold water from the outside does not easily enter. Therefore, an underwater suit with a high heat retaining effect can be obtained.

  Further, when the elastic foam layer is used as a dry suit with the concave portion opening to the body side, a large amount of air is accumulated in the concave portion and the air is difficult to be discharged to the outside because the concave portion does not penetrate. Therefore, a sufficient heat retaining property and buoyancy can be exhibited by the synergistic effect of the air accumulated in the recess and the bubbles of the elastic foam.

  Furthermore, if a closing layer is laminated on the recess forming surface of the elastic foam layer directly or via another layer to close the opening of the recess, it is difficult for air to leak out of the recess and water enters the recess. Hard to do. Therefore, regardless of whether it is used as a wet suit or a dry suit, it is possible to retain air in the concave portion and provide stable buoyancy.

Claims (7)

  An underwater suit material having an elastic foam layer having a plurality of recesses formed on at least one surface thereof.   The blocking layer having a non-air-permeable property and a water-impermeable layer is laminated on the recess forming surface of the elastic foam layer directly or via another layer to close the opening of the recess. Material for underwater suits.   The material for underwater suits according to claim 1 or 2, wherein a coating layer containing hollow microcapsules or nanocapsules is laminated on at least one surface of the elastic foam layer.   A coating layer containing hollow microcapsules or nanocapsules is present on at least one surface of the laminate having the elastic foam layer and/or the closing layer or between any layers of the laminate. The material for underwater suits according to claim 1 or 2.   An underwater suit using the underwater suit material according to claim 1.   A wet suit comprising the underwater suit material according to claim 1, wherein the recess of the elastic foam layer is arranged so as to face the body side.   A triathlon suit comprising the underwater suit material according to claim 2.

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