1378779 (1) 九、發明說明 【發明所屬之技術領域】 本發明係關於一種水中衣物用素材及使用該素材的水 中衣物。 【先前技術】 水中衣物有濕衣（wet suit)及乾衣（dry suit)，其 各別有潛水用衣物、衝浪用衣物、鐵人三項運動 (triathlon )用衣物。濕衣係藉由將水放入衣物內來使 用’以獲得保溫效果者。亦即，使水貯存在身體與濕衣之 間，藉由體溫將該水加溫，藉此發揮保溫效果。相反地， 乾衣係形成不使海水滲入衣物內的構造，藉由使衣物內保 持乾燥狀態，以獲得保溫效果者。 該等水中衣物的素材一般係使用將平紋布（jersey ) 等伸縮性布帛貼附在天然或合成橡膠等彈性發泡體之表面 者。例如，在專利文獻1中已揭示一種濕衣係由在發泡性 橡膠材料的表背面貼附有具伸縮性之織編物的質地材料所 構成，因滲水而使水在該質地材料與穿用者之身體間的間 隙潤濕而成的濕衣中，在發泡性橡膠材料的一部分或所有 部分設有孔部。 由於設在發泡性橡膠材料之孔部而使透氣性佳，因此 直接穿用濕衣在陸上運動之鐵人三項運動（triathlon)等 競賽時，不會對穿用者帶來悶熱或骯髒等不舒服的感覺。 而且，當由水中移至地上時，因滲水而在濕衣內部浸濕的 -4 - (2) 1378779 水與空氣同時在瞬時排出至外部，因此並不會對運動性造 成不便，而適合穿用。 專利文獻1 :日本專利特開平6-3 1 2692號公報（參考 申請專利範圍第1項、段落0017) 【發明內容】 (發明所欲解決之課題） φ 然而，專利文獻1記載之濕衣中，由於設在發泡性橡 膠材料之孔部係呈貫穿狀態，因此具有於陸上透氣性佳的 優點，但在水中，在衣物內好不容易加溫後的水會通過孔 部而排出至衣物外，同時外部之較冷的水會通過孔部而流 .入至衣物內。因此，保溫效果低。 此外，專利文獻1記載之濕衣中，雖藉由發泡性橡膠 材料保有保溫性及浮力，但可藉由發泡性橡膠材料保持的 空氣較爲少量，因此，其效果並不足夠。即使空氣存在於 φ 孔部內，如上所述，孔部係貫穿發泡性橡膠材料而形成， 因此會排出而無法保持。因此，無法保有充分的保溫性及 • 浮力。 本發明係鑑於上述課題，目的在提供一種保溫效果及 浮力較高之水中衣物用素材及使用該素材之水中衣物。 (解決課題之手段） 爲達成上述目的，本發明係一種水中衣物用素材，其 特徵爲：具有至少在一面形成有複數個凹部的彈性發泡體 -5- (3) (3)1378779 層。若使彈性發泡體層之凹部在身體側形成開口’而作爲 濕衣使用，由於水會貯存在凹部內，因此可保持大量水 分，且易於在身體與衣物之間形成水膜。此外，由於凹部 並未貫穿彈性發泡體層，因此經加溫的水難以排出至外 部，同時來自外部之較冷的水亦難以滲入。是故，保溫效 果較高。 此外，若使彈性發泡體層之凹部在身體側形成開口， 而作爲乾衣使用，可在凹部內貯存大量空氣。由於凹部並 未貫穿，因此空氣難以排出至外部。是故，藉由貯存在凹 部內的空氣與彈性發泡體層所具有之氣泡的相乘效果，可 發揮充分的保溫性及浮力。 其中，所謂「具有彈性發泡體層之水中衣物用素材」 係爲包含僅由彈性發泡體層而成之單層素材、以及將其他 層疊層在彈性發泡體層之疊層素材之雙方的槪念。此外， 凹部亦可形成在彈性發泡體層之兩面。 關於凹部之開口大小，例如爲直徑2至6mm，較佳爲 直徑4mm。此外，關於凹部之深度，例如爲〇.5至5mm， 較佳爲1至4mm。若爲上述範圍之外，即無法獲得良好之 保溫效果及浮力。 在彈性發泡體層可疊層其他層，亦可疊層在未形成有 凹部之側的面（以下設爲凹部非形成面），亦可疊層在凹 部形成面。以其他層而言，可例示彈性發泡體、平紋布等 伸縮性布帛’或由塗佈劑形成的層或金屬箔等塗佈層，但 並非限定於此。 -6- 1378779 ⑷ 當使其他疊層在凹部形成面時，係藉由其他層將凹部 開口部予以閉塞，因此適於使空氣保持在凹部內而欲提高 水中衣物之保溫性及浮力之情形。具體而言，在彈性發泡 體層的凹部形成面，具有非透氣性及非透水性之閉塞層直 接或隔介其他層予以疊層，而將凹部開口部閉塞。此時， 設定凹部內部之整體未被閉塞層或其他層塡埋。凹部並未 貫穿彈性發泡體層，同時其開口由具非透氣性及非透水性 之閉塞層予以閉塞，因此空氣難以漏洩至凹部外，而且水 分難以滲入凹部內。因此，可在凹部內保持空氣，且可保 有穩定的浮力。此時，適於在水中時需要浮力的鐵人三項 運動。 閉塞層之素材若爲具非透氣性及非透水性之素材，則 非爲所限定者，惟以具有獨立氣泡之彈性發泡體爲佳。若 爲彈性發泡體，則可藉由在內部含有的氣泡，來補強保溫 性及浮力。 此外，閉塞層可直接疊層在彈性發泡體層，亦可使其 他層介於其間而予以疊層。亦即，閉塞層若可直接或間接 將彈性發泡體層之凹部開口部予以閉塞即可。以其他層而 言，雖可例示平紋布等伸縮性布帛，或由塗佈劑形成的層 或金屬箔等塗佈層，但並非限定於此。 彈性發泡體層‘及構成閉塞層之彈性發泡體以氯丁橡膠 (neoprene rubber)(註冊商標，以下省略）爲佳，但亦 可使用其他天然橡膠、氯丁橡膠（chloroprene rubber)、 異戊二烯橡膠、丁基橡膠、苯乙烯-丁二烯橡膠、丁二烯 (5) (5)1378779 橡膠、丁腈橡膠、乙烯-丙烯橡膠、氯磺化聚乙烯橡膠等 合成橡膠、合成樹脂。 最好在彈性發泡體層的至少一面，疊層含中空狀微膠 囊或奈米膠囊的塗佈層。或者’若爲彈性發泡體層及/或 具有閉塞層之疊層體時，亦可在疊層體之至少一方的表面 或疊層體的任意層間，存有含中空狀微膠囊或奈米膠囊的 塗佈層。塗佈層、微膠囊或奈米膠囊的素材並非爲所限定 者。藉由在塗佈層含有中空狀微膠囊或奈米膠囊，而形成 含有氣泡，因此可提高保溫性及浮力。 上述構成之水中衣物用素材係適用於各種水中衣物。 例如，可適用於濕衣、半乾衣、乾衣。更詳而言之，係適 於潛水用、衝浪用、鐵人三項運動用。 (發明之效果） 根據本發明，若使彈性發泡體層之凹部在身體側形成 開口，而作爲濕衣使用，由於水會貯存在凹部內，因此可 保持大量水分，而變得易於在身體與衣物之間形成水膜。 此外，由於凹部並未貫穿彈性發泡體層，因此經加溫的水 難以排出至外部，同時來自外部之較冷的水亦難以滲入。 因此，可形成保溫效果高的水中衣物。 此外，若使彈性發泡體層之凹部在身體側形成開口， 而作爲乾衣使用，可在凹部內貯存大量空氣，由於凹部並 未貫穿，因此該空氣難以排出至外部。是故，藉由貯存在 凹部內的空氣與彈性發泡體層所具有之氣泡的相乘效果， -8 - 1378779 ⑹ 可發揮充分的保溫性及浮力》 再者，將閉塞層直接或者隔介其他層疊層在彈性發泡 體層之凹部形成面而將凹部開口部予以閉塞，則空氣難以 漏洩至凹部外，而且水分難以滲入凹部內。因此，即使用 於濕衣、乾衣之任一者，均可在凹部內保持空氣，且可保 有穩定的浮力。 【實施方式】 以下根據圖示說明本發明之實施形態。 <第1實施形態> 第1圖係構成第1實施形態之水中衣物之素材的剖面 圖。如第1圖所示，構成第1實施形態之水中衣物之素材 係由：在一面形成有複數個凹部1的彈性發泡體層2;疊 層在彈性發泡體層2之凹部非形成面的伸縮性布帛3;以 及形成在彈性發泡體層2之凹部形成面的塗佈層4所構 成。彈性發泡體層2與伸縮性布帛3的疊層係藉由適當任 意的接著劑加以固定，但亦可藉由其他手段加以固定。此 外，塗佈層4的疊層係在當塗佈層4本身具有黏著力等接 著力時，可藉由其接著力使其疊層。將如上所述所形成的 水中衣物用素材以使凹部形成面面向身體側的方式配置， 且以沿著身體的方式，立體式施行縫製等，藉此形成水中 衣物。 彈性發泡體層2係由具有獨立氣泡的彈性發泡體所構 -9- (7) 1378779 成。以該彈性發泡體而言，係使用氯丁橡膠（neoprene rubber)，但亦可使用其他天然或合成橡膠、合成樹脂。 彈性發泡體層2的厚度約1至i〇mm，較佳爲1至8mm， 更佳爲4至5mm，惟並非限定於此。 在彈性發泡體層2之一面係形成有具有複數個圓形剖 面的凹部1。凹部1係形成開口直徑3mm、深度1mm，相 鄰接之凹部周緣的最短距離設爲約4mm，惟並非限定於 ^ 此。凹部1若形成2至3個/cm2，即可使其保有充分的 保溫性、浮力，故較爲理想》凹部1係將彈性發泡體層2 的一面上形成縱橫規則性的排列。其中，彈性發泡體層2 可一體形成，亦可如第2圖所示，使具有複數個貫穿孔的 彈性發泡體2b疊層在板狀彈性發泡體2a而形成。以貫穿 孔及板狀彈性發泡體2a包圍的部分係形成凹部1。 伸縮性布帛 3係使用尼龍或聚酯製的平紋布 (jersey )，但亦可使用其他透氣性佳之使用合成纖維或 φ 天然纖維之紡織物或編織物。平紋布3可藉由其伸縮性而 隨從身體的動作，故較爲理想。伸縮性布帛3的厚度設爲 0.2至1.5mm，較佳爲約0.5mm。 塗佈層4係含有中空狀奈米膠囊（nano capsule)或 微膠囊（micro capsule)。藉由奈米膠囊或微膠囊所包含 的空氣，使塗佈層4含有氣泡，而可提升保溫效果及浮 力。如第1圖所示，覆蓋於彈性發泡體層2之凹部形成面 的塗佈層4可僅疊層於凹部1以外的部分，亦可以不完全 塡埋凹部1的方式沿著凹部1內面予以塗佈》 -10- (8) (8)1378779 奈米膠囊或微膠囊爲在殻內不包含芯物質的中空狀膠 囊，其殼壁的素材以聚胺酯樹脂（poiyurethane resin)較 爲合適，但其他亦可由選自聚醯胺、聚丁二烯、丙烯腈、 甲基丙燃酸甲醋及二氯亞乙烯（vinyl i dene chloride )之 組群中之熱可塑性物質或者將該等混合而成之熱可塑性物 質所構成。奈米膠囊或微膠囊之調配量以相對於塗佈層含 有1至1 0重量％爲宜。 塗佈層4列舉有由塗佈劑構成之層或金屬箔，但並非 限定於此，若爲可含有奈米膠囊或微膠囊，即可採用眾所 週知者。塗佈劑列舉如：酯樹脂系、氟樹脂系、烯烴樹脂 系、矽樹脂系等塗佈劑，但並非限定於此。其中，當將塗 佈層4設在水中衣物質地的表面時，以具有親水性及疏水 性之兩親媒性之塗佈劑爲佳。該類物品可例示含有界面活 性劑之塗佈劑。可作成在空氣中彈開水、在水中適於水而 使流水阻力降低之水中衣物。 此外，金屬箔係將金屬素材作成薄膜狀者。亦可以接 著劑等將該金屬箔貼附在其他層來使用。薄膜狀金屬箔係 厚約70微米之超薄薄膜，用以有效發揮隔熱性、保溫 性。穿用者可減輕因熱損失（heat loss)所造成的疲勞。 其中，金屬箔的素材以鈦爲宜，但其他亦可使用金、銀、 鋁、鉛等。在該等素材之金屬箔的表面，以使奈米膠囊或 微膠囊配置成點（dot)狀的方式使用塗佈劑來進行塗 佈。 當構成如上時，若使彈性發泡體層2之凹部形成面面 -11 - (9) (9)1378779 向身體側，而作爲水中衣物使用’由於水會貯存在凹部1 內，因此可保持大量水分，同時容易在身體與衣物之間形 成水膜。此外，凹部1並未貫穿彈性發泡體層2，因此經 加溫的水難以排出至外部，同時來自外部之較冷的水亦難 以滲入。因此，保溫效果較高。 此外，若作爲乾衣（dry suit)使用，可在凹部1內 貯存大量空氣。由於未貫穿凹部1，因此凹部1內的空氣 難以排出至外部。因此，藉由貯存在凹部1內的空氣與彈 性發泡體層2所具有之獨立氣泡的相乘效果，可發揮充分 的保溫性及浮力。 <第2實施形態> 第3圖係構成第2實施形態之水中衣物之素材的剖面 圖。如第3圖所示，本實施形態中係以：將由彈性發泡體 構成的閉塞層5疊層在彈性發泡體層2之凹部形成側的 面，以閉塞凹部1之開口爲特徵，關於其他基本構成則與 第1實施形態相同。彈性發泡體層2與閉塞層5之疊層係 藉由適當任意的接著劑加以固定，但亦可藉由其他手段加 以固定。 更詳而言之’構成第2實施形態之水中衣物之素材係 由：在一面形成有複數個凹部1的彈性發泡體層2;疊層 在彈性發泡體層2之凹部非形成面的伸縮性布帛3;疊層 在彈性發泡體層2之凹部形成面的閉塞層5;以及疊層在 閉塞層5之表面的塗佈層4所構成。如第3圖所示，係以 -12- (10) (10)1378779 使塗佈層4側成爲身體側的方式配置。其中，亦可使彈性 發泡體層2反轉而使閉塞層5位在外側方向。亦即，亦可 自身體側依序疊層：塗佈層4、彈性發泡體層2、疊層在 彈性發泡體層2之凹部形成面的閉塞層5、伸縮性布帛 3。將如上述形成之水中衣物用素材沿著人體的方式立體 式施行縫製等，藉此形成水中衣物。 閉塞層5係由板狀彈性發泡體構成。彈性發泡體與彈 性發泡體層2相同係使用氯丁橡膠，但亦可使用其他天然 或合成橡膠、合成樹脂。此外，彈性發泡體具有獨立氣 泡。閉塞層5的厚度約1至10mm，較佳爲4至5mm，惟 並非限定於此。 利用閉塞層5將形成在彈性發泡體層2之凹部1的開 口予以閉塞，因此可將空氣貯存在凹部1內。凹部1內的 空氣難以漏洩。因此，可在水中衣物保有穩定的保溫性及 浮力。該實施形態係適於需要浮力的鐵人三項運動用衣 物。 (實施例） 以下藉由實施例詳加說明本發明。 <實施例1 > 第4圖係顯示用於潛水用濕衣之素材之一實施例的剖 面圖。如圖所示，本實施例之素材係自身體側依序疊層： 塗佈層4a、彈性發泡體層2、疊層在彈性發泡體層2之凹 -13- (11) 1378779 部非形成面之塗佈層4b、板狀之第二彈性發泡體層6、逢 佈層4b、平紋布3。彈性發泡體層2之厚度設爲5mm，第 二彈性發泡體層6之厚度設爲5mm，平紋布3之厚度設爲 0_5mm。其中，亦可在以下範圍內變更：彈性發泡體層2 之厚度爲1至l〇mm’第二彈性發泡體層6之厚度爲1至 10mm，平紋布3之厚度爲0.2至1.5mm。 第二彈性發泡體層6係由具有獨立氣泡之彈性發泡體 φ 所構成。該彈性發泡體係使用氯丁橡膠，但亦可使用其他 天然或合成橡膠、合成樹脂。 塗佈層4係含有奈米膠囊。奈米膠囊係使用野村貿易 公司製之NC948，惟並非限定於此。對於彈性發泡體層2 .之凹部形成面側之塗佈層4a係使用兩親媒性之塗佈劑。 兩親媒性之塗佈劑係將聚胺酯系聚合物13重量份、聚四 氟乙烯微粉末7重量份、矽油2重量份及十二基硫酸鈉2 重量份均勻地混合在以下溶劑：丙酮2重量份、甲基異丁 φ 酮（MIBK) 3重量份、甲苯55重量份、乙酸丁酯5重量 份、二丙酮醇11重量份。其中，亦可在以下範圍內變 更：聚胺酯系聚合物爲8至18重量份、聚四氟乙烯微粉 末爲2至12重量份、矽油爲1至7重量份及十二基硫酸 鈉爲1至7重量份、丙酮爲1至7重量份、甲基異丁酮 (MIBK)爲1至8重量份、甲苯爲50至60重量份、乙 酸丁酯爲1至10重量份、二丙酮醇爲6至16重量份。此 外，彈性發泡體層2與第二彈性發泡體層6之間、以及第 二彈性發泡體層6與平紋布3之間的塗佈層4b係分別使 -14 - (12) (12)1378779 用鈦之金屬箔。 若使彈性發泡體層2之凹部形成面面向身體側，而作 爲濕衣使用，由於水會貯存在凹部1內，因此易於在身體 與衣物之間形成水膜。此外，凹部1並未貫穿彈性發泡體 層2，因此經加溫的水難以排出至外部，同時來自外部之 較冷的水亦難以滲入。因此，保溫效果較高。 此外，若使彈性發泡體層2之凹部形成面面向身體 側，而作爲乾衣使用，可在凹部1內貯存大量空氣。由於 凹部1並未貫穿，因此空氣難以排出至外部。是故，藉由 貯存在凹部1內的空氣與彈性發泡體層2所具有之獨立氣 泡的相乘效果，可發揮充分的保溫性及浮力。 <實施例2 > 第5圖係顯示用於衝浪用濕衣之素材之一實施例的剖 面圖。如圖所示，本實施例之素材係自身體側依序疊層： 塗佈層4a、彈性發泡體層2、疊層在彈性發泡體層2之凹 部非形成面之塗佈層4b、平紋布3、塗佈層4b、板狀之第 二彈性發泡體層6、塗佈層4a。由於平紋布3位於彈性發 泡體層2及第二彈性發泡體層6之間，故難以吸水。因 此，以素材整體而言的重量變化會較少。彈性發泡體層2 之厚度設爲5mm，第二彈性發泡體層6之厚度設爲5mm’ 平紋布3之厚度設爲〇.5mm。其中，亦可在以下範圍內變 更：彈性發泡體層2之厚度爲1至10mm ’第二彈性發泡 體層6之厚度爲1至l〇mm’平紋布3之厚度爲0.2至 -15- (13) (13)1378779 1.5mm。 塗佈層4b係含有奈米膠囊。奈米膠囊係使用野村貿 易公司製之NC948，惟並非限定於此。對於彈性發泡體層 2之凹部形成面及第二彈性發泡體層6之表面的塗佈層4a 係使用兩親媒性之塗佈劑。兩親媒性之塗佈劑係將聚胺酯 系聚合物13重量份、聚四氟乙烯微粉末7重量份、矽油2 重量份及十二基硫酸鈉2重量份均勻地混合在以下溶劑： 丙酮2重量份、甲基異丁酮（MIBK) 3重量份、甲苯55 重量份、乙酸丁酯5重量份、二丙酮醇11重量份。其 中，亦可在以下範圍內變更：聚胺酯系聚合物爲8至18 重量份、聚四氟乙烯微粉末爲2至12重量份、矽油爲1 至7重量份及十二基硫酸鈉爲1至7重量份、丙嗣爲1至 7重量份 '甲基異丁酮（MIBK)爲1至8重量份、甲苯爲 50至60重量份、乙酸丁酯爲1至10重量份、二丙酮醇爲 6至16重量份。此外，彈性發泡體層2與平紋布3之間、 以及平紋布3與第二彈性發泡體層6之間的塗佈層4b係 分別使用鈦之金屬箔。 若使彈性發泡體層2之凹部形成面面向身體側’而作 爲濕衣使用，由於水會貯存在凹部1內，因此易於在身體 與衣物之間形成水膜。此外，凹部1並未貫穿彈性發泡體 層2，因此經加溫的水難以排出至外部，同時來自&部之 較冷的水亦難以滲入。因此，保溫效果較高。 此外，若使彈性發泡體層2之凹部形成面面向身體 側，而作爲乾衣使用，可在凹部1內貯存大量空氣。由於 -16 - (14) 1378779 凹部1並未貫穿，因此空氣難以排出至外部。 貯存在凹部1內的空氣與彈性發泡體層2所具 泡的相乘效果，可發揮充分的保溫性及浮力。 <實施例3 > 第6圖係顯示用於鐵人三項運動用濕衣之 施例的剖面圖。如圖所示’本實施例之素材係 ^ 序疊層：塗佈層4a、閉塞層5、平紋布3、彈 2、第二彈性發泡體層6、塗佈層4a。由於平) 彈性發泡體層2及第二彈性發泡體層6及閉塞 故難以吸水。因此，以素材整體而言的重量變 閉塞層5之厚度設爲5 mm，平紋布3之厚度設 彈性發泡體層2之厚度設爲5mm，第二彈性發 厚度設爲5mm。其中，亦可在以下範圍內變更 之厚度爲1至l〇mm，平紋布3之厚度爲0.2 φ 彈性發泡體層2之厚度爲1至l〇mm，第二彈 6之厚度爲1至10mm。 塗佈層4a係含有奈米膠囊。奈米膠囊係 易公司製之NC948，惟並非限定於此。對於閉 面及第二彈性發泡體層6之表面的塗佈層4a 媒性之塗佈劑β兩親媒性之塗佈劑係將聚胺醋 重量份、聚四氟乙烯微粉末7重量份、矽油2 二基硫酸鈉2重量份均勻地混合在以下溶劑： 份、甲基異丁酮（ΜΙΒΚ) 3重量份、甲苯55 是故，藉由 有之獨立氣 素材之一實 自身體側依 性發泡體層 纹布3位於 層5之間， 化會較少。 爲 0.5 mm， 泡體層6之 :閉塞層5 至 1.5mm > 性發泡體層 使用野村貿 塞層5之表 係使用兩親 系聚合物13 重量份及十 丙酮2重量 重量份、乙 -17- (15) (15)1378779 酸丁酯5重量份、二丙酮醇11重量份。其中，亦可在以 下範圍內變更：聚胺醋系聚合物爲8至18重量份、聚四 氟乙嫌微粉末爲2至12重量份、砂油爲1至7重量份及 十二基硫酸鈉爲1至7重量份、丙酮爲丨至7重量份、甲 基異丁酮（MIBK)爲1至8重量份、甲苯爲50至60重 量份、乙酸丁酯爲1至10重量份、二丙酮醇爲6至16重 量份。 由於利用閉塞層5將彈性發泡體層2所形成之凹部1 的開口予以閉塞’因此可將空氣貯存在凹部1內。因此， 可在水中衣物保有穩定的保溫性及浮力。此時，適於需要 浮力的鐵人三項運動用衣物。 (產業利用可能性） 根據本發明，若使彈性發泡體層之凹部在身體側形成 開口，而作爲濕衣使用，由於水會貯存在凹部內，因此可 保持大量水分，而變得易於在身體與衣物之間形成水膜。 此外，凹部並未貫穿彈性發泡體層，因此經加溫的水難以 排出至外部，同時來自外部之較冷的水亦難以滲入。因 此，可形成保溫效果高的水中衣物。 此外，若使彈性發泡體層之凹部在身體側形成開口， 而作爲乾衣使用，可在凹部內貯存大量空氣’由於凹部並 未貫穿，因此該空氣難以排出至外部。是故，藉由貯存在 凹部內的空氣與彈性發泡體層所具有之氣泡的相乘效果’ 可發揮充分的保溫性及浮力。 -18 - (16) 1378779 再者’將閉塞層直接或者隔介其他層疊層在彈性發泡 體層之凹部形成面而將凹部開口部予以閉塞，則空氣難以 漏洩至凹部外，而且水難以滲入凹部內。因此，即使用於 濕衣、乾衣之任一者’均可在凹部內保持空氣，且可保有 穩定的浮力。 【圖式簡單說明】1378779 (1) Description of the Invention [Technical Field] The present invention relates to a material for laundry in water and a laundry in water using the material. [Prior Art] There are wet suits and dry suits in the water, and there are clothes for diving, clothing for surfing, and clothing for triathlon. Wet clothes are used by putting water into the clothes to obtain a heat retaining effect. That is, the water is stored between the body and the wet coat, and the water is warmed by the body temperature, thereby exerting a heat insulating effect. On the contrary, the clothes system forms a structure in which seawater does not permeate into the clothes, and the clothes are kept in a dry state to obtain a heat insulating effect. The material of the water in the water is generally attached to a surface of an elastic foam such as natural or synthetic rubber by using a stretchable fabric such as jersey. For example, Patent Document 1 discloses that a wet garment is composed of a texture material in which a stretchable woven fabric is attached to the front and back surfaces of a foamable rubber material, and water is applied to the texture material due to water seepage. In the wet garment in which the gap between the bodies is wetted, a hole portion is provided in a part or all of the foamable rubber material. Since it is provided in the hole portion of the foamable rubber material to make it breathable, it is not sultry or dirty to the wearer when it is directly used in the triathlon such as the triathlon. Waiting for an uncomfortable feeling. Moreover, when moving from the water to the ground, the -4 (1) 1378779 water soaked inside the wetsuit due to water seepage is instantaneously discharged to the outside at the same time, so that it does not cause inconvenience to the movement, and is suitable for wearing. use. [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei 6-3 1 2692 (refer to Japanese Patent Application Laid-Open No. Hei No. Hei. No. Hei. Since the hole portion of the foamable rubber material is in a penetrating state, it has an advantage of good air permeability on the land. However, in the water, water that is easily heated in the clothes is discharged to the outside of the clothes through the hole portion. At the same time, the colder water from the outside will flow through the hole and enter the clothes. Therefore, the heat preservation effect is low. Further, in the wet garment described in Patent Document 1, although the foaming rubber material retains heat retaining property and buoyancy, the amount of air held by the foamable rubber material is small, and therefore the effect is not sufficient. Even if air is present in the φ hole portion, as described above, the hole portion is formed through the foamable rubber material, so that it is discharged and cannot be held. Therefore, sufficient insulation and buoyancy cannot be maintained. The present invention has been made in view of the above problems, and an object of the invention is to provide a material for underwater clothing having a high heat retention effect and a high buoyancy, and an underwater garment using the material. (Means for Solving the Problems) In order to achieve the above object, the present invention provides a material for underwater laundry characterized by having an elastic foam -5-(3) (3) 1378779 layer having a plurality of concave portions formed on at least one surface thereof. If the concave portion of the elastic foam layer is formed as an opening on the body side as a wet coat, since water is stored in the concave portion, a large amount of water can be retained, and a water film can be easily formed between the body and the laundry. Further, since the concave portion does not penetrate the elastic foam layer, it is difficult to discharge the heated water to the outside, and it is difficult to infiltrate the cold water from the outside. Therefore, the insulation effect is high. Further, if the concave portion of the elastic foam layer is formed with an opening on the body side and used as a dry clothes, a large amount of air can be stored in the concave portion. Since the recess is not penetrated, it is difficult to discharge air to the outside. Therefore, sufficient heat retention and buoyancy can be exhibited by the effect of the air stored in the concave portion and the bubble of the elastic foam layer. Here, the "material for underwater laundry having an elastic foam layer" is a commemoration of both the single layer material including only the elastic foam layer and the laminated material of the other laminated layer on the elastic foam layer. . Further, the concave portion 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. Further, the depth of the concave portion is, for example, 〇5 to 5 mm, preferably 1 to 4 mm. If it is outside the above range, good thermal insulation and buoyancy cannot be obtained. The elastic foam layer may be laminated with another layer, or may be laminated on a surface on which the concave portion is not formed (hereinafter, a concave portion non-formed surface), or may be laminated on the concave portion forming surface. The other layer may, for example, be a stretchable fabric such as an elastic foam or a plain cloth or a coating layer formed of a coating agent or a metal foil, but is not limited thereto. -6- 1378779 (4) When the other laminated layers are formed on the concave portion, the recessed portion is closed by the other layers. Therefore, it is suitable to hold the air in the concave portion to improve the heat retention and buoyancy of the laundry in the water. Specifically, in the concave portion forming surface of the elastic foam layer, the non-breathable and water-impermeable occlusive layer is laminated directly or via another layer, and the concave opening portion is closed. At this time, the entirety of the inside of the recessed portion is not buried in the occlusion layer or other layers. The recess does not penetrate the elastic foam layer, and the opening is closed by the non-breathable and non-permeable occlusive layer, so that it is difficult for air to leak out of the recess and it is difficult for water to penetrate into the recess. Therefore, air can be held in the recess and stable buoyancy can be maintained. At this time, it is suitable for triathlons that require buoyancy in water. If the material of the occlusive layer is a material that is non-breathable and non-permeable, it is not limited, but an elastic foam having independent bubbles is preferred. In the case of an elastic foam, the heat retention and buoyancy can be enhanced by the bubbles contained inside. Further, the occlusive layer may be laminated directly on the elastic foam layer or may be laminated with other layers interposed therebetween. That is, the occlusive layer may directly or indirectly occlude the opening of the concave portion of the elastic foam layer. In other layers, a stretchable fabric such as plain weave or a coating layer such as a layer or a metal foil formed of a coating agent may be exemplified, but the invention is not limited thereto. The elastic foam layer 'and the elastic foam constituting the occlusive layer are preferably neoprene rubber (registered trademark, hereinafter omitted), but other natural rubber, chloroprene rubber, and isoflavone may be used. Diene rubber, butyl rubber, styrene-butadiene rubber, butadiene (5) (5) 1378779 rubber, nitrile rubber, ethylene-propylene rubber, chlorosulfonated polyethylene rubber and other synthetic rubber, synthetic resin. Preferably, a coating layer containing a hollow microcapsule or a nanocapsule is laminated on at least one side of the elastic foam layer. Alternatively, in the case of an elastic foam layer and/or a laminate having a closed layer, a hollow microcapsule or a nanocapsule may be present on at least one surface of the laminate or between any layers of the laminate. Coating layer. The material of the coating layer, microcapsule or nanocapsule is not limited. By containing hollow microcapsules or nanocapsules in the coating layer, bubbles are formed, so that heat retention and buoyancy can be improved. The material for underwater clothing having the above configuration is suitable for use in various underwater clothing. For example, it can be applied to wet clothes, semi-dry clothes, and dry clothes. More specifically, it is suitable for diving, surfing, and triathlon. (Effect of the Invention) According to the present invention, when the concave portion of the elastic foam layer is formed with an opening on the body side and used as a wet garment, since water is stored in the concave portion, a large amount of moisture can be maintained, and it becomes easy to be in the body and A water film is formed between the clothes. Further, since the concave portion does not penetrate the elastic foam layer, the heated water is hard to be discharged to the outside, and the cold water from the outside is hard to penetrate. Therefore, it is possible to form underwater clothing having a high heat insulating effect. Further, if the concave portion of the elastic foam layer is formed with an opening on the body side and used as a dry clothes, a large amount of air can be stored in the concave portion, and since the concave portion is not penetrated, the air is hard to be discharged to the outside. Therefore, by the effect of the air stored in the concave portion and the bubble of the elastic foam layer, -8 - 1378779 (6) can exhibit sufficient heat retention and buoyancy. Further, the occlusion layer is directly or separately interposed. When the laminated layer forms a surface on the concave portion of the elastic foam layer and closes the opening of the concave portion, it is difficult for air to leak outside the concave portion, and it is difficult for moisture to penetrate into the concave portion. Therefore, even if it is used for either a wet coat or a dry coat, air can be held in the recess and stable buoyancy can be maintained. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. <First Embodiment> Fig. 1 is a cross-sectional view showing the material of the underwater laundry of the first embodiment. As shown in Fig. 1, the material of the underwater garment according to the first embodiment is composed of an elastic foam layer 2 having a plurality of concave portions 1 formed on one surface thereof, and a stretched surface of a concave portion non-formed surface of the elastic foam layer 2 The fabric 3 is formed of a coating layer 4 formed on the concave portion forming surface of the elastic foam layer 2. The lamination of the elastic foam layer 2 and the stretchable fabric 3 is fixed by any suitable adhesive, but may be fixed by other means. Further, the coating layer 4 is laminated so that when the coating layer 4 itself has an adhesive force or the like, it can be laminated by its adhesive force. The material for underwater laundry formed as described above is disposed so that the concave portion forming surface faces the body side, and sewn in a three-dimensional manner along the body, thereby forming underwater laundry. The elastic foam layer 2 is composed of an elastic foam having closed cells, -9-(7) 1378779. In the case of the elastic foam, neoprene rubber is used, but other natural or synthetic rubber or synthetic resin may be used. The thickness of the elastic foam layer 2 is about 1 to i mm, preferably 1 to 8 mm, more preferably 4 to 5 mm, but is not limited thereto. A concave portion 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 the adjacent peripheral edges of the recesses is set to be about 4 mm, but is not limited thereto. When the concave portion 1 is formed to have 2 to 3/cm2, it is possible to maintain sufficient heat retaining property and buoyancy. Therefore, it is preferable that the concave portion 1 has a vertical and horizontal regular arrangement on one surface of the elastic foam layer 2. Here, the elastic foam layer 2 may be integrally formed, or as shown in Fig. 2, an elastic foam 2b having a plurality of through holes may be laminated on the plate-like elastic foam 2a. The concave portion 1 is formed in a portion surrounded by the through hole and the plate-like elastic foam 2a. The stretch fabric 3 is made of nylon or polyester jersey, but other textiles or woven fabrics using synthetic fibers or φ natural fibers are also available. The plain cloth 3 is preferably carried out by the movement of the body by its stretchability. The thickness of the stretchable fabric 3 is set to 0.2 to 1.5 mm, preferably about 0.5 mm. The coating layer 4 contains a hollow nanocapsule or a microcapsule. The coating layer 4 contains air bubbles by the air contained in the nanocapsules or microcapsules, and the heat retention effect and buoyancy can be improved. As shown in Fig. 1, the coating layer 4 covering the concave portion forming surface of the elastic foam layer 2 may be laminated only on a portion other than the concave portion 1, or may be formed along the inner surface of the concave portion 1 so as not to completely bury the concave portion 1. Coating -10- (8) (8) 1378779 Nano capsules or microcapsules are hollow capsules containing no core material in the shell. The material of the shell wall is suitable for poiyurethane resin, but Others may be selected from a thermoplastic material selected from the group consisting of polyamine, polybutadiene, acrylonitrile, methyl acetoacetate, and vinyl i dene chloride. It consists of a thermoplastic material. The amount of the nanocapsules or microcapsules is preferably from 1 to 10% by weight based on the coating layer. The coating layer 4 is exemplified by a layer composed of a coating agent or a metal foil. However, the coating layer 4 is not limited thereto, and any of a nanocapsule or a microcapsule may be used. The coating agent is, for example, a coating agent such as an ester resin, a fluororesin, an olefin resin or an anthracene resin, but is not limited thereto. Among them, when the coating layer 4 is provided on the surface of the aqueous substance, it is preferred to use a hydrophilic or hydrophobic two-agent coating agent. Such articles may be exemplified by a coating agent containing an interface active agent. It can be made into underwater clothing that boils in the air and is suitable for water in the water to reduce the flow resistance. Further, the metal foil is formed by forming a metal material into a film. The metal foil may be attached to other layers by an adhesive or the like. The film-like metal foil is an ultra-thin film having a thickness of about 70 μm for effective heat insulation and heat retention. The wearer can reduce fatigue caused by heat loss. Among them, the material of the metal foil is preferably titanium, but other materials such as gold, silver, aluminum, and lead may be used. The surface of the metal foil of the materials is coated with a coating agent so that the nanocapsules or the microcapsules are arranged in a dot shape. When the configuration is as described above, if the concave portion of the elastic foam layer 2 is formed to face -11 - (9) (9) 1378779 toward the body side, and it is used as a clothing in the water 'because water is stored in the concave portion 1, it can be kept large Moisture, while easily forming a water film between the body and clothing. Further, since the concave portion 1 does not penetrate the elastic foam layer 2, it is difficult to discharge the warmed water to the outside, and it is difficult to infiltrate the cold water from the outside. Therefore, the heat preservation effect is high. Further, if used as a dry suit, a large amount of air can be stored in the recess 1. Since the recess 1 is not penetrated, it is difficult for the air in the recess 1 to be discharged to the outside. Therefore, sufficient heat retention and buoyancy can be exhibited by the synergistic effect of the air stored in the concave portion 1 and the closed cells of the elastic foam layer 2. <Second Embodiment> Fig. 3 is a cross-sectional view showing the material of the underwater laundry of the second embodiment. As shown in Fig. 3, in the present embodiment, the occlusive layer 5 made of an elastic foam is laminated on the surface on the side where the concave portion of the elastic foam layer 2 is formed, and the opening of the concave portion 1 is closed. The basic configuration is the same as that of the first embodiment. The laminate of the elastic foam layer 2 and the occlusive layer 5 is fixed by a suitable optional adhesive, but may be fixed by other means. More specifically, the material constituting the underwater garment of the second embodiment is composed of an elastic foam layer 2 in which a plurality of concave portions 1 are formed on one surface, and a stretchable surface of a non-formed surface of the concave portion of the elastic foam layer 2 The cloth 3 is composed of an occlusive layer 5 laminated on the concave portion forming surface of the elastic foam layer 2, and a coating layer 4 laminated on the surface of the occlusive layer 5. As shown in Fig. 3, the coating layer 4 side is placed on the body side by -12-(10) (10) 1378779. However, the elastic foam layer 2 may be reversed so that the occlusive layer 5 is positioned in the outer direction. In other words, the coating layer 4, the elastic foam layer 2, the occlusive layer 5 laminated on the concave portion 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 laundry material formed as described above is three-dimensionally sewn along the human body to form a water laundry. The occlusive layer 5 is composed of a plate-like elastic foam. The elastic foam is made of the same chloroprene rubber as the elastic foam layer 2, but other natural or synthetic rubber or synthetic resin may be used. Further, the elastic foam has independent bubbles. The thickness of the occlusive layer 5 is about 1 to 10 mm, preferably 4 to 5 mm, but is not limited thereto. The opening formed in the recess 1 of the elastic foam layer 2 is closed by the occlusive layer 5, so that air can be stored in the recess 1. The air in the recess 1 is hard to leak. Therefore, the clothing can maintain stable heat preservation and buoyancy in the water. This embodiment is suitable for a triathlon sportswear that requires buoyancy. (Embodiment) Hereinafter, the present invention will be described in detail by way of examples. <Example 1> Fig. 4 is a cross-sectional view showing an embodiment of a material for a wetsuit for diving. As shown in the figure, the material of the present embodiment is sequentially laminated on its own body side: the coating layer 4a, the elastic foam layer 2, and the concave 13-(11) 1378779 laminated on the elastic foam layer 2 are not formed. The coating layer 4b on the surface, the second elastic foam layer 6 in the form of a plate, the woven layer 4b, and the plain cloth 3. The thickness of the elastic foam layer 2 was set to 5 mm, the thickness of the second elastic foam layer 6 was set to 5 mm, and the thickness of the plain cloth 3 was set to 0_5 mm. Further, it may be changed within the following range: the thickness of the elastic foam layer 2 is 1 to 10 mm. The thickness of the second elastic foam layer 6 is 1 to 10 mm, and the thickness of the plain cloth 3 is 0.2 to 1.5 mm. The second elastic foam layer 6 is composed of an elastic foam φ having closed cells. The elastic foaming system uses neoprene, but other natural or synthetic rubbers and synthetic resins can also be used. The coating layer 4 contains a nanocapsule. The nanocapsules are NC948 manufactured by Nomura Trading Co., Ltd., but are not limited thereto. For the coating layer 4a on the side of the concave portion forming surface of the elastic foam layer 2, a two-agent coating agent is used. The amphiphilic coating agent uniformly mixes 13 parts by weight of the polyurethane polymer, 7 parts by weight of the fine powder of polytetrafluoroethylene, 2 parts by weight of eucalyptus oil, and 2 parts by weight of sodium lauryl sulfate in the following solvent: acetone 2 Parts by weight, 3 parts by weight of methyl isobutyl φ ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol. It can also be changed within the following range: 8 to 18 parts by weight of the polyurethane-based polymer, 2 to 12 parts by weight of the polytetrafluoroethylene fine powder, 1 to 7 parts by weight of the eucalyptus oil, and 1 to 10% of sodium dodecyl sulfate. 7 parts by weight, acetone is 1 to 7 parts by weight, methyl isobutyl ketone (MIBK) is 1 to 8 parts by weight, toluene is 50 to 60 parts by weight, butyl acetate is 1 to 10 parts by weight, and diacetone alcohol is 6 Up to 16 parts by weight. Further, 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 plain cloth 3 is respectively -14 - (12) (12) 1378779 Use a metal foil of titanium. If the concave forming surface of the elastic foam layer 2 faces the body side, and is used as a wet coat, since water is stored in the concave portion 1, it is easy to form a water film between the body and the laundry. Further, since the concave portion 1 does not penetrate the elastic foam layer 2, it is difficult to discharge the warmed water to the outside, and it is difficult to infiltrate the cold water from the outside. Therefore, the heat preservation effect is high. Further, if the concave portion forming surface of the elastic foam layer 2 faces the body side and is used as a dry clothes, a large amount of air can be stored in the concave portion 1. Since the recess 1 is not penetrated, it is difficult to discharge air to the outside. Therefore, sufficient heat retention and buoyancy can be exhibited by the effect of the air stored in the concave portion 1 and the independent bubble of the elastic foam layer 2. <Example 2> Fig. 5 is a cross-sectional view showing an embodiment of a material for a wetsuit for surfing. As shown in the figure, the material of the present embodiment is sequentially laminated on its own body side: a coating layer 4a, an elastic foam layer 2, a coating layer 4b laminated on the non-formed surface of the concave portion of the elastic foam layer 2, and plain weave The cloth 3, the coating layer 4b, the plate-shaped second elastic foam layer 6, and the coating layer 4a. Since the plain cloth 3 is located between the elastic foam layer 2 and the second elastic foam layer 6, it is difficult to absorb water. Therefore, the weight change as a whole of the material will be less. The thickness of the elastic foam layer 2 was set to 5 mm, and the thickness of the second elastic foam layer 6 was set to 5 mm. The thickness of the plain cloth 3 was set to 〇5 mm. However, it can also be changed within the following range: the thickness of the elastic foam layer 2 is 1 to 10 mm. The thickness of the second elastic foam layer 6 is 1 to 10 mm. The thickness of the plain cloth 3 is 0.2 to -15- ( 13) (13) 1378779 1.5mm. The coating layer 4b contains a nanocapsule. The nanocapsules are NC948 manufactured by Nomura Trading Co., Ltd., but are not limited thereto. For the coating layer 4a of the concave portion forming surface of the elastic foam layer 2 and the surface of the second elastic foam layer 6, a bi-philophilic coating agent is used. The amphiphilic coating agent uniformly mixes 13 parts by weight of the polyurethane-based polymer, 7 parts by weight of the polytetrafluoroethylene fine powder, 2 parts by weight of the eucalyptus oil, and 2 parts by weight of sodium lauryl sulfate in the following solvent: Acetone 2 Parts by weight, 3 parts by weight of methyl isobutyl ketone (MIBK), 55 parts by weight of toluene, 5 parts by weight of butyl acetate, and 11 parts by weight of diacetone alcohol. In addition, it may be changed within the following range: 8 to 18 parts by weight of the polyurethane-based polymer, 2 to 12 parts by weight of the polytetrafluoroethylene fine powder, 1 to 7 parts by weight of the eucalyptus oil, and 1 to 10% of sodium dodecyl sulfate. 7 parts by weight, propylene is 1 to 7 parts by weight of 'methyl isobutyl ketone (MIBK) is 1 to 8 parts by weight, toluene is 50 to 60 parts by weight, butyl acetate is 1 to 10 parts by weight, and diacetone alcohol is 6 to 16 parts by weight. Further, a metal foil of titanium is used between the elastic foam layer 2 and the plain cloth 3, and between the plain cloth 3 and the second elastic foam layer 6, respectively. If the recessed portion forming surface of the elastic foam layer 2 is faced to the body side as a wet garment, since water is stored in the concave portion 1, it is easy to form a water film between the body and the laundry. Further, since the concave portion 1 does not penetrate the elastic foam layer 2, it is difficult to discharge the warmed water to the outside, and it is difficult to infiltrate the cold water from the & portion. Therefore, the heat preservation effect is high. Further, if the concave portion forming surface of the elastic foam layer 2 faces the body side and is used as a dry clothes, a large amount of air can be stored in the concave portion 1. Since -16 - (14) 1378779 does not penetrate the recess 1, air is difficult to discharge to the outside. The synergistic effect of the air stored in the concave portion 1 and the bubble of the elastic foam layer 2 can exhibit sufficient heat retention and buoyancy. <Example 3> Fig. 6 is a cross-sectional view showing an example of a wet garment for a triathlete. As shown in the figure, the material stack of the present embodiment is a coating layer 4a, an occluding layer 5, a plain cloth 3, a spring 2, a second elastic foam layer 6, and a coating layer 4a. It is difficult to absorb water due to the flat elastic elastic layer 2 and the second elastic foam layer 6 and the occlusion. Therefore, the thickness of the occlusive layer 5 is 5 mm, and the thickness of the plain woven fabric 3 is set to 5 mm, and the second elastic thickness is set to 5 mm. In addition, the thickness may be changed from 1 to 10 mm in the following range, the thickness of the plain cloth 3 is 0.2 φ, the thickness of the elastic foam layer 2 is 1 to 10 mm, and the thickness of the second elastic 6 is 1 to 10 mm. . The coating layer 4a contains a nanocapsule. The nanocapsule is NC948 manufactured by Easy Company, but is not limited thereto. The coating layer 4a on the surface of the closed surface and the second elastic foam layer 6 is a coating agent of the mediation agent. The amphiphilic coating agent is a polyamine vinegar portion by weight and a polytetrafluoroethylene fine powder of 7 parts by weight. 2 parts by weight of eucalyptus oil 2 sodium disulfate is uniformly mixed in the following solvent: part, methyl isobutyl ketone (ΜΙΒΚ) 3 parts by weight, toluene 55, so that one of the independent gas materials is The foam layer 3 is located between the layers 5 and is less likely to be formed. 0.5 mm, the bubble layer 6: occlusive layer 5 to 1.5 mm > The foam layer uses the Nomura Trading layer 5 table using the amphiphilic polymer 13 parts by weight and the ten acetone weight 2 parts by weight, B-17 - (15) (15) 1378779 5 parts by weight of butyl acrylate and 11 parts by weight of diacetone alcohol. Among them, it can be changed within the following range: 8 to 18 parts by weight of the polyamine vinegar polymer, 2 to 12 parts by weight of the polytetrafluoroethylene micropowder, 1 to 7 parts by weight of the sand oil, and dodecyl sulphuric acid. 1 to 7 parts by weight of sodium, 丨 to 7 parts by weight of acetone, 1 to 8 parts by weight of methyl isobutyl ketone (MIBK), 50 to 60 parts by weight of toluene, and 1 to 10 parts by weight of butyl acetate. The acetol is 6 to 16 parts by weight. Since the opening of the recess 1 formed by the elastic foam layer 2 is closed by the occlusive layer 5, air can be stored in the recess 1. Therefore, the clothing can maintain stable heat preservation and buoyancy in the water. At this time, it is suitable for triathlon sports clothes that require buoyancy. (Industrial Applicability) According to the present invention, when the concave portion of the elastic foam layer is formed on the body side and used as a wet garment, since water is stored in the concave portion, a large amount of moisture can be maintained, and it becomes easy to be in the body. A water film is formed between the clothes and the clothes. Further, since the concave portion does not penetrate the elastic foam layer, it is difficult to discharge the heated water to the outside, and it is difficult to infiltrate the cold water from the outside. Therefore, it is possible to form underwater clothing having a high heat insulating effect. Further, if the concave portion of the elastic foam layer is formed with an opening on the body side and used as a dry clothes, a large amount of air can be stored in the concave portion. Since the concave portion is not penetrated, the air is hard to be discharged to the outside. Therefore, sufficient heat retention and buoyancy can be exhibited by the effect of the air stored in the concave portion and the bubble of the elastic foam layer. -18 - (16) 1378779 In addition, when the occlusion layer is formed directly on the concave portion of the elastic foam layer and the opening portion of the concave portion is closed, the air is hard to leak outside the concave portion, and water is difficult to penetrate into the concave portion. Inside. Therefore, even if it is used for any of wet clothes and clothes dryers, air can be held in the recesses, and stable buoyancy can be maintained. [Simple description of the map]
第1圖係構成第1實施形態之水中衣物之素材的剖面 圖。 第2圖係顯示第1實施形態之變形例之素材的剖面 圖。 第3圖係構成第2實施形態之水中衣物之素材的剖面 圖。 第4圖係顯示用於潛水用濕衣之素材之一實施例的剖 面圖。 第5圖係顯示用於衝浪用濕衣之素材之一實施例的剖 面圖。 第6圖係顯示用於鐵人三項運動用濕衣之素材之一實 施例的剖面圖^ 【主要元件符號說明】 1 :凹部 2:彈性發泡體層 2a、2b :彈性發泡體 -19- (17) (17)1378779 3:伸縮性布帛（平紋布） 4、4a、4b:塗佈層 5 :閉塞層 6:第二彈性發泡體層 -20Fig. 1 is a cross-sectional view showing the material of the underwater laundry of the first embodiment. Fig. 2 is a cross-sectional view showing a material of a modification of the first embodiment. Fig. 3 is a cross-sectional view showing the material of the underwater laundry of the second embodiment. Fig. 4 is a cross-sectional view showing an embodiment of a material for a wetsuit for diving. Fig. 5 is a cross-sectional view showing an embodiment of a material for a wetsuit for surfing. Fig. 6 is a cross-sectional view showing an embodiment of a material for a triathlon wet garment. ^ [Explanation of main components] 1 : recess 2: elastic foam layer 2a, 2b: elastic foam -19- (17) (17) 1378779 3: stretchable fabric (plain) 4, 4a, 4b: coating layer 5: occlusive layer 6: second elastic foam layer -20