To provide an industrial sheet material which is excellent in bending resistance and folding resistance and hardly causes a whitening mark, and is excellent in persistence of a water penetration suppression effect (water absorption prevention property) from a cross section of a joined part of a membrane structure.SOLUTION: An industrial sheet material is composed of a flexible laminate in which coating layers composed of a thermoplastic resin composition are provided on a surface and a rear face of a fabric. The fabric is a woven fabric containing one or more yarns selected from a multifilament yarn, a short-fiber spun yarn and a covering yarn, one or more lubrication support substances selected from a cellulose nanofiber, a modified cellulose nanofiber, cellulose nanocrystal and modified cellulose nanocrystal are interposed at least between yarns and at a yarn intersection of the woven fabric, the lubrication support substance is also attached to the surface...

Keywords
SHAPE RESINS STRUCTURE FILLERS
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