201119841 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種管路更生用的管內襯材以及該管內 襯材的製造方法，此管內襯材由含浸有液態硬化性樹脂的 柔軟的管狀樹脂吸收材所形成。 【先前技術】 以往，下水道管等的管路老化時，不將管路從地下控 出而是對其進行加襯來對該管路進行修復之管路內襯方法 已經投入實際使用。在此管路內襯方法中，在外表面披覆 有塑膠薄膜的管狀樹脂吸收材內，含浸未硬化的液態硬化 性樹脂而形成的管內襯材，藉由流體壓力的作用，經過反 轉或牽引而插入到管路內。然後，在管內襯材保持成被按 壓於管路內壁上的狀態，使管內襯材內含浸的硬化性樹脂 硬化，由硬化後的管內襯材將管路內壁加襯。 作爲含浸於管狀樹脂吸收材的硬化性樹脂，使用藉由 光照射而硬化的樹脂或藉由加熱而硬化的樹脂。在使用藉 由光照射而硬化的樹脂之情況時，使光照射裝置（UV燈 ，可見光線光源等）移動在被按壓於管路內壁上而保持成 圓形的管內襯材內，從而使樹脂硬化。在使用藉由加熱而 硬化的樹脂之情況時，使熱水或熱氣等的熱介質作用在管 內襯材上，讓樹脂硬化。 在使用藉由光照射而硬化的樹脂的管內襯材的情況， r 雖然一方面具有硬化速度快，硬化所需時間短的效果，但 -5- 201119841 是另一方面存在有能夠硬化的層之厚度薄，通常只有 1 Omm左右的問題。另外，在使用藉由加熱而硬化的樹脂 的管內襯材的情況，雖然加厚管內襯材，也能使其硬化， 但是硬化速度變慢，硬化所需時間長。 因此，有被提案有使藉由光照射而硬化的樹脂和藉由 加熱而硬化的樹脂兩種樹脂含浸於管狀樹脂吸收材，即便 管內襯材較厚，亦可以在較短時間內達到硬化之技術（專 利文獻1)。這種管內襯材，在被插入於管路內的狀態下 ，藉由光照射而硬化的樹脂會流向內側，因此，首先，內 側的樹脂藉由光照射而硬化，利用該硬化時所產生的熱使 另一方的樹脂硬化。 專利文獻1:日本特開2003-33970號公報 【發明內容】 [發明所欲解決之課題] 但是，在從前述專利文獻1中所獲知的管內襯材的情 況，雖然因藉由光照射而硬化的樹脂所產生的熱爲高溫， 藉由此熱進行加熱，具有可以使另一方的樹脂高速硬化的 優點，但，由於硬化速度的提升，造成硬化後的管內襯材 中會產生空隙（間隙），水密性變差、加襯後地面上仍然 會漏水的問題等存在。此外，也存在著硬化後內襯的完成 度差的問題。 本發明爲解決上述技術問題而開發完成的發明，其目 的在於提供一種使水密性提升的高品質的管內襯材以及該 -6 - 201119841 管內襯材的製造方法。 [用以解決課題之手段] 爲了解決上述技術問題’本發明提供一種管內襯材， 係被插入管路內，用以更生管路的內周面的管內襯材，其 特徵爲：具有外部襯材和內部襯材，外部襯材是由含浸有 液態硬化性樹脂的管狀樹脂吸收材所形成，內部襯材是密 接在上述外部襯材的內周面上，由含浸有液態硬化性樹脂 的管狀樹脂吸收材所形成，內部襯材的樹脂吸收材的密度 比外部襯材的樹脂吸收材的密度更高。 此外，本法明提供一種管內襯材的製造方法，係被插 入管路內，用以對管路的內周面進行更生的管內襯材的製 造方法，其特徵爲：在外部襯材內插入內部襯材，使內部 襯材密接在外部襯材上，藉以製造由外部襯材和內部襯材 所形成的管內襯材，其中，上述外部襯材是由含浸有液態 硬化性樹脂的管狀樹脂吸收材所形成的襯材，上述內部襯 材是在密度比上述外部櫬材的樹脂吸收材的密度更高的管 狀樹脂吸收材中含浸液態硬化性樹脂之襯材。 [發明效果] 在本發明，在由含浸有液態硬化性樹脂的管狀樹脂吸 收材所形成的外部襯材的內部，以層疊方式配置有：以在 密度比上述外部襯材的樹脂吸收材的密度高的管狀樹脂吸 r 收材中，含浸了液態硬化性樹脂所形成的內部襯材。由於t 201119841 內部襯材的樹脂吸收材的密度比外部襯材的樹脂吸收材的 密度更高，因此減少了空隙的產生，表面光滑，氣密性佳 。因此，即使在外部襯材的樹脂吸收材產生空隙，其也會 被內部襯材所披覆，故，不僅提升了管內襯材的水密性， 也提升了管內襯材的完成度，從而可獲得高品質的管內襯 材。 在內部襯材和外部襯材的樹脂吸收材中，分別含浸有 藉由光照射而硬化的樹脂和藉由加熱而硬化的樹脂兩種樹 脂之情況，或內部襯材和外部襯材的樹脂吸收材中只含浸 有藉由光照射而硬化的樹脂或只含浸有藉由加熱而硬化的 樹脂之情況時，又或一方的樹脂吸收材中含浸有藉由光照 射而硬化的樹脂或藉由加熱而硬化的樹脂、而另一方的樹 脂吸收材中含浸有藉由加熱而硬化的樹脂和光照射而硬化 的樹脂兩種樹脂之情況時，若內部襯材的樹脂吸收材的密 度比外部襯材的樹脂吸收材的密度高，則可以獲得相同的 效果。 【實施方式】 以下，參照圖面，說明關於實施本發明的最佳形態的 實施例。在此，針對作爲要更生的管路之下水道的主管路 的加襯進行說明。但是，本發明並不限於此’也適用於上 水道、農業用水管等管路的內襯之情況。 在以下說明的實施例中，以內部襯材和外部襯材兩者 的樹脂吸收材中分別含浸有藉由光照射而硬化的樹脂（以 -8 - 201119841 下，稱第1樹脂）和藉由加熱而硬化的樹脂或常溫下硬化 的樹脂（以下，稱第2樹脂）兩種樹脂爲例進行說明’但 本發明並不限於此，亦可適用於以下情況，即，在內部襯 材和外部襯材的兩樹脂吸收材中只含浸第1樹脂，內部襯 材和外部襯材的兩樹脂吸收材中只含浸第2樹脂。同樣地 ，本發明也適用於內部襯材和外部襯材中的其中一方的樹 脂吸收材中含浸第1樹脂或第2樹脂、而另一方樹脂吸收 材中含浸第1樹脂和第2樹脂兩種樹脂的情況。 [實施例] 圖1〜圖3中，圖示了本發明的管內襯材的一實施例 。管內襯材1是採用外部襯材10和內部襯材（內部襯層 )1 1的雙層構造。 外部襯材10是由利用不織布所構成的柔軟的管狀樹 脂吸收材1 0a所形成，在其外周面，塗佈有氣密性的塑膠 薄膜1 Ob。在樹脂吸收材1 0a，含浸有未硬化狀態的液態 的第1樹脂和第2樹脂。作爲構成樹脂吸收材1 0a的不織 布的材質，可使用聚酯、聚丙烯、尼龍、丙烯酸、維尼綸 等的塑膠纖維或玻璃纖維，而作爲其中含浸的液態的第2 樹脂，可使用添加了熱催化劑的不飽和聚酯樹脂、環氧樹 脂、或乙烯脂樹脂，又，作爲液態的第1樹脂，可使用同 樣的樹脂，只是將熱催化劑換爲光催化劑。此外，作爲氣 密性的塑膠薄膜l〇b的材質，可使用聚乙烯，聚乙烯/尼 Γ 龍共聚合物、聚氯乙烯樹脂 '聚丙烯等。如此，第1樹脂^ -9 - 201119841 和第2樹脂只是催化劑不同，而樹脂是相同的，均爲熱硬 化性樹脂，但，有時也將添加了熱催化劑的第2樹脂稱爲 熱硬化性樹脂，而將添加了光催化劑的第〗樹脂稱爲光硬 化性樹脂。 外部襯材1〇的樹脂吸收材l〇a中，第1樹脂和第2 樹脂以混合的狀態被含浸，但亦可如專利文獻1中所記載 ，採用內周面側含浸第1樹脂、外周面側含浸第2樹脂的 不均勻含浸。又，亦可以使在內周面側形成第1樹脂層、 而在外周面側形成第2樹脂層的方式，分成兩層含浸。 再者，在本發明，內周面側、外周面側的表現方式， 是顯示被插入既設管路內並準備好接受光照射的管內襯材 的內外之關係。因此，在使用反轉方法將襯材插入到既設 管路之情況，插入前的內襯材中，第1樹脂偏在或存在於 外周面側，第2樹脂偏在或存在於內周面側。 外部襯材10的樹脂吸收材10a，是藉由將單面塗佈有 高氣密性的塑膠薄膜l〇b的具有預定寬度、預定長度的帶 狀樹脂吸收材圓化，並將其兩端對接縫製，形成爲如圖2 上部所示的管狀樹脂吸收材1 〇a。樹脂吸收材1 〇a的對接 部l〇c是藉由將聚胺甲酸酯、聚乙烯或聚丙烯製的膠帶14 披覆在樹脂吸收材1 〇a，加以氣密地接合。或，亦可在將 帶狀樹脂吸收材圓化並將其兩端部縫合而作成管狀後，塗 佈氣密性的塑膠薄膜10b。 圖3是示意顯示管內襯材的斷面圖，其中，未圖示樹 脂吸收材1 0a的對接部1 0c '膠帶1 4等。對如此所形成爲 -10- 201119841 管狀的樹脂吸收材1 0 a，藉由真空吸引來含浸第1樹脂和 第2樹脂。 此外，亦可以使帶狀樹脂吸收材先含浸第1樹脂和第 2樹脂然後卷成筒狀，將其兩端部藉由黏接或縫合而結合 ，從而形成管狀。 當在將這種結構的外部襯材1 〇插入到老化的管路內 ，藉由供給壓縮空氣，將其按壓在管路的內壁之狀態下， 使第1樹脂硬化，並利用其硬化熱使第2樹脂硬化，進行 加襯時，則會有因硬化速度快，造成在硬化後的內襯材內 產生空隙，使得水密性變差的問題。因此，在本發明，使 用由管狀的柔軟的樹脂吸收材所形成的內部襯材，將管內 襯材，作成爲由外部襯材和內部襯材所形成的雙層構造。 再者，在本發明，當處於被插入既設管路內並準備好 接受光照射的狀態時，位於內部的稱爲內部襯材，位於較 內部襯材更外部的稱爲外部襯材。 作爲內部襯材11的柔軟的管狀樹脂吸收材11a，可使 用密度比外部襯材10的樹脂吸收材10a的密度高的材料 。例如，在作爲外部襯材1 〇的樹脂吸收材1 0 a，使用由經 過針刺（Needle Punching)加工的聚酯等塑膠纖維所製成 的不織布之情況時’能夠藉由將和樹脂吸收材l〇a相同材 質的樹脂吸收材壓縮後再進行針刺加工，藉以製作出比樹 脂吸收材l〇a密度高的樹脂吸收材11a»或，藉由使用由 經過紡黏（Spun bond)加工的塑膠纖維製成的不織布作爲樹 脂吸收材l〇a，將相同材質但基量較大、具有一定重量的[ -11 - 201119841 經過紡黏加工的不織布用於樹脂吸收材1 1 a，能夠獲得密 度比樹脂吸收材l〇a大的樹脂吸收材11a。 內部襯材11的樹脂吸收材11a，是藉由將如圖4上部 所示的具有預定寬度、預定長度的帶狀樹脂吸收材11 a，圓 化，將其兩端部對接縫製，形成爲如圖4下部所示的管狀 的樹脂吸收材11a。樹脂吸收材11a的對接部lib是藉由 將聚胺甲酸酯、聚乙烯、聚丙烯製的膠帶15披覆於樹脂 吸收材1 1 a上，加以氣密地接合。 在內部襯材11的樹脂吸收材11a，與外部襯材1〇的 樹脂吸收材1 〇a同樣地，含浸有混合狀態的第1樹脂和第 2樹脂。含浸於樹脂吸收材1 1 a的第1樹脂和第2樹脂各 自的特性，是與含浸於樹脂吸收材1 Oa的第1樹脂和第2 樹脂相同。 爲使內部襯材11的樹脂吸收材11a的外周面與外部 襯材1 0的樹脂吸收材1 Oa的內周面密接，分別設定樹脂 吸收材10a和11a的尺寸，以便如圖3所示，當使管內襯 材1膨脹成其斷面成爲圓形時，使內部襯材11的樹脂吸 收材11a的外徑形成爲大致與外部襯材1〇的樹脂吸收材 1 0 a的內徑相同。 此外’樹脂吸收材11a的厚度，是與樹脂吸收材〗0a 的厚度相同，或比其薄。 又，內部襯材11的樹脂吸收材lla中樹脂的含浸、 以及內部襯材11和外部襯材10的雙層化，是以圖5所示 這種的步驟來進行。 -12- 201119841 首先，如圖5(a)所示，將內部襯材n牽引入管狀 的內管12中，使第丨樹脂和第2樹脂含浸到內部襯材n 的樹Ss吸收材11a。然後，如圖5(b)所示，將內部襯材 11和內管12的一端（圖中右端）折返，另一端與繩ι6( 圖5(e))結合。如圖5(c)所示，將折返的內部襯材 1 1和內管1 2的端部裝設到含浸有第1樹脂和第2樹脂的 外部襯材10的左端’對內部襯材11和內管12施加反轉 壓力。內部襯材11和內管12’藉由此反轉壓力而反轉， 被插入到外部襯材10內（圖5(d))。然後，如圖5(e )所示，當內部襯材1 1的前端從外部襯材丨〇的右端伸出 預定長度時，解除反轉壓力’結束內部襯材11對外部襯 材10的插入。如此’可以獲得由外部襯材10和內部襯材 11所構成的雙層化管內襯材1(圖I)。在圖5(e)的狀 態下’當排出壓縮空氣時’管內襯材1洩氣而變成扁平管 狀。 再者，內部襯材11，亦可以不藉由上述反轉來插入外 部襯材10中，而是藉由牽引來插入到外部襯材10。 如此所製作的管內襯材1，插入到既設管管路內對其 更生。圖6是顯示管路的更生。成爲扁平管狀的管內襯材 1，藉由作業車24搬運到更生現場，從人孔20牽引到主 管路22中，其一端導引至人孔21。從管內襯材1的人孔 20側的端部，搬入可發出紫外線及/或可見光的光照射裝 置27，在該端部裝設端部塡塞器（end packer) 26' 28’ r 使管內襯材1的內部呈密閉狀態。從作業車24經由管線1 -13- 201119841 25對管內襯材1內提供壓縮空氣’管內襯材1擴徑至圓形 ，管內襯材1最外周的外部襯材10的氣密性塑膠薄膜l〇b 與主管路的內周面密接。此狀態下’使光照射裝置27從 人孔2 1側的端部向人孔20側移動。 當藉由光照射裝置27，從管內襯材1的內部進行光照 射時，內部襯材11和外部襯材10的第1樹脂11a' l〇a， 會因光照射而硬化，藉由該硬化時所產生的熱，使得內部 襯材11和外部襯材10的第2樹脂硬化。因內部襯材11 的樹脂吸收材的密度比外部襯材1〇的樹脂吸收材的密度 高，所以，第1樹脂和第2樹脂以高密度含浸，空氣量相 應變少，減少了空隙的產生，使第1樹脂和第2樹脂硬化 時的水密性顯著提升。因此，即使在外部襯材1 0的樹脂 吸收材中產生空隙，也因外部襯材1 0被空隙少、完成度 好的內部襯材1 1披覆，所以，管內襯材1的使水密性提 升，同時也提升了管內襯材的完成度。 再者’在各樹脂吸收材l〇a、1 la中分別含浸第1樹 脂和第2樹脂兩種樹脂之情況時，是最能使管內襯材1的 水密性提升。但是’在兩樹脂吸收材10a、11a中只含浸 第1樹脂時、或只含浸第2樹脂之情況時，亦可以獲得同 樣的效果。此外’在內部襯材和外部襯材中的其中一方的 樹脂吸收材含浸第1樹脂或第2樹脂、在另一方的樹脂吸 收材含浸第1樹脂和第2樹脂兩種樹脂之情況時，亦可獲 得同樣的效果。 當管內襯材硬化結束時’卸下端部塡塞器26、28，將 -14- 201119841 光照射裝置26從管路中除去，並且拉引繩16，藉此，將 披覆於在內周面上的可剝離的內管12從管內襯材除去。 再者’亦可將具有強度的紫外線隔離薄膜，例如藉由 熱溶著來披覆於外部襯材11的外周面上。因這種紫外線 隔離薄膜可以隔離紫外線，所以，能夠防止外部襯材和內 部襯材中含浸的第1樹脂因外來光而意外硬化，並且，因 紫外線隔離薄膜具一定強度，所以，能夠防止當將管內襯 材牽引入管路時所產生的外部和內部襯材的伸長。在使此 紫外線隔離薄膜具有氣密性的情況時，亦可省略外部襯材 的氣密性薄膜l〇b。 此外，將管內襯材1插入到管路22內時，亦可不採 用牽引’而是使用反轉插入。在此情況，預先將內部襯材 和外部襯材的內外關作成相反。 【圖式簡單說明】 圖1是顯示管內襯材的斜視圖。 圖2是將管內襯材分解顯示的斜視圖。 圖3是顯示管內襯材的垂直截面的斷面圖。 圖4是說明內部襯材的製造方法的說明圖。 圖5是顯示將內部襯材插入外部襯材的過程的說明圖 〇 圖6是顯示使用管內襯材對管路進行更生的狀態的說 明圖。 -15- 201119841 【主要元件符號說明】 1 :管內襯材 1 0 :外部襯材 10a :樹脂吸收材 l〇b :塑膠薄膜 10c :對接部 1 1 :內部襯材 1 1 a :樹脂吸收材 12 :內管 1 4,1 5 :膠帶 22 :主管路 2 7 :光照射裝置201119841 VI. Description of the Invention: [Technical Field] The present invention relates to a pipe lining material for pipe rejuvenation and a method for manufacturing the pipe lining material, which is impregnated with a liquid curable resin. A soft tubular resin absorbent material is formed. [Prior Art] In the past, when a pipe such as a sewer pipe was aged, a pipe lining method in which the pipe was not controlled from the ground but was lined to repair the pipe was put into practical use. In the pipe lining method, the tubular lining material formed by impregnating the unhardened liquid curable resin in the tubular resin absorbent material having the outer surface coated with the plastic film is reversed by the action of the fluid pressure. Pull and insert into the pipeline. Then, the inner lining material is held in a state of being pressed against the inner wall of the pipe, and the hardenable resin impregnated in the inner lining material is hardened, and the inner wall of the pipe is lined by the hardened inner lining material. As the curable resin impregnated into the tubular resin absorbent material, a resin which is cured by light irradiation or a resin which is cured by heating is used. When a resin hardened by light irradiation is used, a light irradiation device (UV lamp, visible light source, or the like) is moved in a tube inner liner that is pressed against the inner wall of the pipe and held in a circular shape, thereby Harden the resin. In the case of using a resin which is hardened by heating, a heat medium such as hot water or hot air is allowed to act on the inner liner to harden the resin. In the case of using a tube lining material of a resin which is hardened by light irradiation, r has an effect of fast hardening speed and short time required for hardening, but on the other hand, there is a layer capable of hardening on the other hand. The thickness is thin, usually only about 1 Omm. Further, in the case of using a pipe inner lining material of a resin which is hardened by heating, the pipe inner lining material can be hardened, but the curing speed is slow and the time required for hardening is long. Therefore, it has been proposed to impregnate a tubular resin absorbent material with a resin which is cured by light irradiation and a resin which is hardened by heating, and can be hardened in a short time even if the inner lining material is thick. Technology (Patent Document 1). In the state in which the inner lining material is inserted into the pipe, the resin hardened by the light irradiation flows to the inner side. Therefore, first, the inner resin is hardened by light irradiation, and the hardening is generated by the hardening. The heat hardens the other resin. [Problem to be Solved by the Invention] However, in the case of the tube lining material known from the above-mentioned Patent Document 1, although it is irradiated by light The heat generated by the hardened resin is a high temperature, and heating by the heat has an advantage that the other resin can be hardened at a high speed. However, since the hardening speed is increased, voids are generated in the tube lining after hardening ( Gap), watertightness is deteriorated, and there is still a problem of water leakage on the ground after lining. In addition, there is also a problem of poor completion of the inner liner after hardening. The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide a high-quality inner tube lining material which improves watertightness and a method for producing the lining material of the -6 - 201119841. [Means for Solving the Problems] In order to solve the above-mentioned technical problems, the present invention provides a pipe lining material which is inserted into a pipe to regenerate the inner liner surface of the pipe, which is characterized by having The outer lining material and the inner lining material are formed of a tubular resin absorbing material impregnated with a liquid curable resin, and the inner lining material is adhered to the inner peripheral surface of the outer lining material, and is impregnated with the liquid curable resin. The tubular resin absorbent material is formed, and the density of the resin absorbent material of the inner liner is higher than the density of the resin absorbent material of the outer liner. In addition, the present invention provides a method for manufacturing a pipe lining material, which is a method for manufacturing a pipe lining material which is inserted into a pipe for regenerating the inner circumferential surface of the pipe, and is characterized in that: the outer lining material is The inner lining material is inserted into the inner lining material to make the inner lining material adhere to the outer lining material, thereby manufacturing the inner lining material formed by the outer lining material and the inner lining material, wherein the outer lining material is impregnated with the liquid curable resin. A lining material formed of a tubular resin absorbing material, wherein the inner lining material is a lining material impregnated with a liquid curable resin in a tubular resin absorbing material having a density higher than a density of the resin absorbing material of the outer gird material. [Effect of the Invention] In the present invention, the inside of the outer lining material formed of the tubular resin absorbent material impregnated with the liquid curable resin is disposed in a stacked manner at a density of the resin absorbing material having a density ratio of the outer lining material. The high tubular resin absorbing material is impregnated with an internal lining material formed of a liquid curable resin. Since the density of the resin absorbing material of the inner lining material of t 201119841 is higher than that of the resin absorbing material of the outer lining material, the generation of voids is reduced, the surface is smooth, and the airtightness is good. Therefore, even if the resin absorbing material of the outer lining material generates a void, it is covered by the inner lining material, so that not only the watertightness of the inner lining material but also the completion degree of the inner lining material is improved, thereby High quality pipe linings are available. In the resin absorbing material of the inner lining material and the outer lining material, respectively, impregnated with a resin which is hardened by light irradiation and a resin which is hardened by heating, or resin absorption of the inner lining material and the outer lining material When the material is only impregnated with a resin hardened by light irradiation or only a resin hardened by heating, or one of the resin absorbent materials is impregnated with a resin hardened by light irradiation or by heating When the resin is hardened and the other resin absorbent material is impregnated with a resin which is cured by heating and a resin which is cured by light irradiation, the density of the resin absorbent material of the inner lining material is higher than that of the outer lining material. When the density of the resin absorbent material is high, the same effect can be obtained. [Embodiment] Hereinafter, embodiments of the best mode for carrying out the invention will be described with reference to the drawings. Here, the lining of the main line as the water channel under the pipeline to be regenerated will be described. However, the present invention is not limited to this, and is also applicable to the case of a liner of a pipeline such as a sewer or an agricultural water pipe. In the embodiment described below, the resin absorbing material of both the inner lining material and the outer lining material is impregnated with a resin hardened by light irradiation (referred to as a first resin under -8 - 201119841) and by The resin which is heated and hardened or the resin which hardens at normal temperature (it is called a 2nd resin below) is demonstrated as an example. However, this invention is not limited to this, and can also apply to the case where it is an internal lining and exterior. In the two resin absorbent materials of the lining material, only the first resin is impregnated, and the two resin absorbent materials of the inner lining material and the outer lining material are only impregnated with the second resin. Similarly, the present invention is also applicable to impregnation of a first resin or a second resin in one of the inner lining material and the outer lining material, and impregnation of the first resin and the second resin in the other resin absorbing material. The case of resin. [Embodiment] Figs. 1 to 3 illustrate an embodiment of a pipe inner lining material of the present invention. The inner liner 1 is a two-layer structure using an outer lining material 10 and an inner lining material (internal lining) 11. The outer lining material 10 is formed of a soft tubular resin absorbing material 10a made of a non-woven fabric, and is coated with an airtight plastic film 1 Ob on the outer peripheral surface thereof. The resin absorbent 10b is impregnated with a liquid first resin and a second resin in an uncured state. As the material of the nonwoven fabric constituting the resin absorbent material 10a, a plastic fiber or a glass fiber such as polyester, polypropylene, nylon, acrylic, or vinylon can be used, and as the second resin in which the liquid is impregnated, heat can be added. The catalyst is an unsaturated polyester resin, an epoxy resin, or a vinyl ester resin. Further, as the liquid first resin, the same resin can be used, except that the thermal catalyst is replaced with a photocatalyst. Further, as the material of the airtight plastic film 10b, polyethylene, polyethylene/niobium copolymer, polyvinyl chloride resin, polypropylene or the like can be used. As described above, the first resin -9 - 201119841 and the second resin are different catalysts, and the resins are the same, and both are thermosetting resins. However, the second resin to which the thermal catalyst is added may be referred to as thermosetting property. The resin is a resin, and the resin to which the photocatalyst is added is referred to as a photocurable resin. In the resin absorbing material 10a of the outer lining material, the first resin and the second resin are impregnated in a mixed state. However, as described in Patent Document 1, the inner peripheral surface side is impregnated with the first resin and the outer periphery. The surface side is impregnated with the uneven impregnation of the second resin. Further, the first resin layer may be formed on the inner peripheral surface side, and the second resin layer may be formed on the outer peripheral surface side, and may be impregnated into two layers. Further, in the present invention, the expression on the inner peripheral surface side and the outer peripheral surface side is a relationship between the inside and the outside of the inner lining material which is inserted into the existing piping and ready to receive light. Therefore, in the case where the lining material is inserted into the existing piping by the inversion method, the first resin is biased or present on the outer peripheral surface side, and the second resin is biased or present on the inner peripheral surface side. The resin absorbing material 10a of the outer lining material 10 is rounded by a strip-shaped resin absorbing material having a predetermined width and a predetermined length which is coated with a highly airtight plastic film 10b on one side, and has both ends The butt sewing system was formed into a tubular resin absorbent material 1 〇a as shown in the upper part of Fig. 2 . The butting portion 10c of the resin absorbent 1a is a gas-tight joint by coating a tape 14 made of polyurethane, polyethylene or polypropylene on the resin absorbent 1a. Alternatively, the tape-shaped resin absorbent material may be rounded and the both ends thereof may be sewn to form a tubular shape, and then the airtight plastic film 10b may be applied. Fig. 3 is a cross-sectional view schematically showing a lining material for a pipe, in which the butting portion 10c' of the resin absorbing material 10a is not shown. The thus-formed resin absorbent material 10 0 201119841 was impregnated with the first resin and the second resin by vacuum suction. Further, the strip-shaped resin absorbent material may be first impregnated with the first resin and the second resin and then wound into a cylindrical shape, and the both end portions thereof may be bonded by bonding or sewing to form a tubular shape. When the outer lining material 1 这种 of such a structure is inserted into the aging pipe, the first resin is hardened by the supply of compressed air and pressed against the inner wall of the pipe, and the heat of hardening is utilized. When the second resin is cured and lining is performed, there is a problem that the curing rate is high, and voids are formed in the lining material after curing, which deteriorates watertightness. Therefore, in the present invention, the inner lining material formed of the tubular soft resin absorbent material is used to form the inner lining material into a two-layer structure formed of the outer lining material and the inner lining material. Further, in the present invention, when it is placed in a state in which it is inserted into an existing pipe and is ready to receive light, the inner lining material, which is located inside, and the outer lining material, which is located outside the inner lining material, is called an outer lining material. The soft tubular resin absorbent 11a as the inner lining material 11 can be made of a material having a density higher than that of the resin absorbent 10a of the outer lining material 10. For example, when a non-woven fabric made of a plastic fiber such as polyester which has been subjected to needle punching (Needle Punching) is used as the resin absorbing material 10 a as the outer lining material, the resin absorbing material can be L〇a The resin absorbent material of the same material is compressed and then subjected to needling processing, thereby producing a resin absorbent material 11a» having a higher density than the resin absorbent material 10a or by using a spun bond. A non-woven fabric made of plastic fiber is used as a resin absorbent material l〇a, which has the same material but a large amount of base and a certain weight [ -11 - 201119841 Non-woven fabric which is spunbonded for the resin absorbent material 1 1 a, can obtain density The resin absorbent 11a which is larger than the resin absorbent material 10a. The resin absorbing material 11a of the inner lining material 11 is formed by rounding the strip-shaped resin absorbing material 11a having a predetermined width and a predetermined length as shown in the upper part of FIG. The tubular resin absorbent 11a shown in the lower part of Fig. 4. The butting portion lib of the resin absorbent member 11a is adhered to the resin absorbent member 11a by a tape 15 made of polyurethane, polyethylene or polypropylene, and is hermetically joined. The resin absorbing material 11a of the inner lining material 11 is impregnated with the first resin and the second resin in a mixed state in the same manner as the resin absorbing material 1 〇a of the outer lining material 1 . The first resin and the second resin impregnated into the resin absorbent 1 1 a have the same characteristics as the first resin and the second resin impregnated into the resin absorbent 1 Oa. In order to make the outer peripheral surface of the resin absorbing material 11a of the inner lining material 11 in close contact with the inner peripheral surface of the resin absorbing material 10a of the outer lining material 10, the sizes of the resin absorbing materials 10a and 11a are set, respectively, so as shown in FIG. When the inner liner 1 is expanded to have a circular cross section, the outer diameter of the resin absorbent 11a of the inner liner 11 is formed to be substantially the same as the inner diameter of the resin absorbent 10 a of the outer liner 1 . Further, the thickness of the resin absorbent member 11a is the same as or thinner than the thickness of the resin absorbent member 0a. Further, the impregnation of the resin in the resin absorbent member 11a of the inner liner 11 and the double layering of the inner liner 11 and the outer liner 10 are carried out in the same manner as shown in Fig. 5. -12-201119841 First, as shown in Fig. 5(a), the inner lining material n is drawn into the tubular inner tube 12, and the second resin and the second resin are impregnated into the tree Ss absorbing material 11a of the inner lining material n. Then, as shown in Fig. 5 (b), the inner lining material 11 and one end (the right end in the drawing) of the inner tube 12 are folded back, and the other end is combined with the rope ι6 (Fig. 5 (e)). As shown in Fig. 5(c), the folded inner lining material 1 1 and the end portion of the inner tube 1 2 are attached to the left end of the outer lining material 10 impregnated with the first resin and the second resin. The reverse pressure is applied to the inner tube 12. The inner lining material 11 and the inner tube 12' are reversed by the reverse pressure, and are inserted into the outer lining material 10 (Fig. 5(d)). Then, as shown in Fig. 5(e), when the front end of the inner lining material 11 protrudes from the right end of the outer lining material by a predetermined length, the reverse pressure is released to end the insertion of the inner lining material 11 into the outer lining material 10. . Thus, a double-layered tube inner liner 1 composed of the outer lining material 10 and the inner lining material 11 can be obtained (Fig. 1). In the state of Fig. 5(e), when the compressed air is discharged, the tube lining material 1 is deflated to become a flat tube shape. Further, the inner lining material 11 may be inserted into the outer lining material 10 without being reversed, but inserted into the outer lining material 10 by pulling. The tube lining material 1 thus produced is inserted into the existing pipe line to be regenerated. Figure 6 is a diagram showing the rejuvenation of the pipeline. The flattened tubular inner lining material 1 is transported to the rehabilitating site by the work vehicle 24, drawn from the manhole 20 into the main pipe 22, and one end thereof is guided to the manhole 21. From the end of the tube liner 1 on the side of the manhole 20, a light irradiation device 27 that emits ultraviolet light and/or visible light is carried, and an end packer 26' 28' r is attached to the end portion. The inside of the pipe lining material 1 is in a sealed state. The compressed air is supplied from the work vehicle 24 to the inside of the pipe lining material 1 via the line 1 -13-201119841 25. The pipe inner lining material 1 is expanded to a circular shape, and the outer lining material 10 of the outermost circumference of the inner lining material 1 is airtight. The plastic film l〇b is in close contact with the inner peripheral surface of the main pipe. In this state, the light irradiation device 27 is moved from the end on the side of the manhole 2 1 toward the side of the manhole 20 . When the light is irradiated from the inside of the tube lining material 1 by the light irradiation device 27, the first resin 11a'10a of the inner lining material 11 and the outer lining material 10 is hardened by light irradiation. The heat generated at the time of hardening causes the inner lining material 11 and the second resin of the outer lining material 10 to be hardened. Since the density of the resin absorbing material of the inner lining material 11 is higher than the density of the resin absorbing material of the outer lining material 1 ,, the first resin and the second resin are impregnated at a high density, and the amount of air is reduced correspondingly, thereby reducing the occurrence of voids. The watertightness at the time of curing the first resin and the second resin is remarkably improved. Therefore, even if a void is generated in the resin absorbing material of the outer lining material 10, since the outer lining material 10 is covered with the inner lining material 1 having a small void and a good completion degree, the inner lining material 1 is watertight. Sexual improvement, but also improved the completion of the lining of the pipe. In the case where each of the resin absorbents 10a and 1a is impregnated with the first resin and the second resin, the watertightness of the inner liner 1 can be improved. However, the same effect can be obtained when only the first resin is impregnated into the two resin absorbent members 10a and 11a or when only the second resin is impregnated. Further, when the resin absorbing material of one of the inner lining material and the outer lining material is impregnated with the first resin or the second resin, and the other resin absorbing material is impregnated with the first resin and the second resin, The same effect can be obtained. When the end liner is hardened, 'the end plugs 26, 28 are removed, the light irradiation device 26 of -14-198419841 is removed from the pipeline, and the rope 16 is pulled, whereby it will be covered in the inner circumference. The peelable inner tube 12 on the face is removed from the inner liner of the tube. Further, an ultraviolet-ray isolating film having strength may be applied to the outer peripheral surface of the outer lining material 11 by, for example, heat-dissolving. Since the ultraviolet ray barrier film can block ultraviolet rays, it is possible to prevent the first resin impregnated in the outer lining material and the inner lining material from being accidentally hardened by external light, and since the ultraviolet ray barrier film has a certain strength, it can be prevented from being The elongation of the outer and inner linings produced by the lining of the pipe as it is drawn into the pipe. When the ultraviolet ray barrier film is made airtight, the airtight film 〇b of the outer lining material may be omitted. Further, when the inner liner 1 is inserted into the pipe 22, the reverse insertion may be used instead of the traction. In this case, the inner and outer portions of the inner lining material and the outer lining material are reversed in advance. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a lining material of a pipe. Fig. 2 is a perspective view showing the tube lining material in an exploded manner. Figure 3 is a cross-sectional view showing a vertical section of a liner in a pipe. Fig. 4 is an explanatory view for explaining a method of manufacturing an inner lining material. Fig. 5 is an explanatory view showing a process of inserting the inner lining material into the outer lining material. Fig. 6 is an explanatory view showing a state in which the pipe lining material is used to regenerate the pipe. -15- 201119841 [Explanation of main component symbols] 1 : Tube lining material 1 0 : External lining material 10a : Resin absorbing material l 〇 b : Plastic film 10c : Butt joint 1 1 : Internal lining material 1 1 a : Resin absorbing material 12: inner tube 1 4, 1 5 : tape 22: main line 2 7 : light irradiation device