LAMINATE FOR PIPE REGENERATION AND MEMBER FOR PIPE REGENERATION

• Main Authors: FUJIMOTO MITSUNOBU, SHIMOMURA JUN, KITAGAWA TAKESHI, TAKEDA MAKOTO, HIRATA MAKIKO, HAZAMA MASAYA
• Format: Patent
• Language: English; Japanese
• Published: 16.05.2019
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a laminate for pipe regeneration capable of securing an excellent water conduction property by improving thickness uniformity of a member for pipe regeneration, and preventing a strength of a regenerated pipe from being reduced by stress concentration caused by thickness non-uniformity, and the member for pipe regeneration.SOLUTION: The present invention relates to a laminate for pipe regeneration which is a sheet-shaped laminate comprising a first layer consisting of a first material and a second layer consisting of a second material and being laminated on the first layer. A thermosetting resin is impregnated in the laminate beforehand. The laminate includes an exposure region in which the second layer is exposed, in front-face end at one side of the laminate and in a rear-face end at another side opposite to the one side. A layer in the exposure region is thicker than a layer of the laminate in any other region than the exposure region. The present invention also relates to a member for pipe regeneration comprising an inner liner 11 for which the second layers exposed on a front face at the one side of the laminate for pipe regeneration and exposed on a rear face at the other side are connected and made cylindrical.SELECTED DRAWING: Figure 1 【課題】管更生用部材の厚み均一性を向上して、良好な通水特性を確保するとともに、厚み不均一に起因する応力集中によって、更生管の強度が低下するのを防止することができる管更生用積層体および管更生用部材を提供する。【解決手段】第一の素材からなる第一の層と、第二の素材からなり、第一の層に積層された第二の層と、を有するシート状の積層体であって、この積層体には、熱硬化性樹脂が予め含浸されており、この積層体の一辺側の表面端部、および、一辺側と対向する他辺側の裏面端部に、第二の層が露出した露出領域を有し、露出領域における層の厚さが、露出領域以外の領域における積層体の層の厚さよりも薄い管更生用積層体、および、この管更生用積層体の一辺側の表面および他辺側の裏面に露出した第二の層同士を接合して筒状にしたインナーライナー１１を備えた管更生用部材を構成する。【選択図】図１