NOVELTY - The multilayer sheet (10) has a surface layer (3a) consisting of a composite material layer (2) which consists of a fluororesin (2a), a heat resistant fiber woven fabric (2b), and polyimide-type resin. The surface layer is formed by carrying out surface-activation process with respect to the composite material layer. The surface-activation process is one of inorganic particle adhesion baking processing, a metallic sodium etching process, a plasma electro-discharge treatment, or corona discharge treatment.    USE - Multilayer sheet used in manufacture of endless belt, and for use in hot platen protection sheet and conveyance sheet of lamination apparatus (all claimed) used in manufacture of solar cell module.    ADVANTAGE - The multilayer sheet having outstanding heat resistance, non-adhesiveness, abrasion resistance and grip property can be obtained, according to the desired use, required performance, etc. The endless belt of desired width, length, and laminated constitution according to a use can be manufactured easily. Two or more endless belts with same length can be manufactured simultaneously. The width at the time of cutting the broad endless belt to separately produce the endless belt in which the width differs can be adjusted suitably. The multilayer sheet and endless belt which were excellent in intensity and durability can be obtained. The manufacture of multilayer sheet or endless belt can be performed easily and efficiently. The platen protection sheet is not damaged, and the abrasion resistance of hot platen protection sheet and conveyance sheet can be improved. Since the lifetime of the hot platen protection sheet and conveyance sheet is improved, the exchange operation can be reduced, and productivity of a solar cell module is improved. The thickness of hot platen protection sheet and conveyance sheet is reduced. The heating time of the to-be-processed object is reduced. The productive efficiency of lamination can be improved. Thermal conductivity of the sheets is made favorable. The lamination defect of the solar cell module produced with the lack of temperature rise of lamination is decreased, and the yield of the product is improved.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) manufacturing method of endless belt, that involves cutting the two edge portions where the belt-shaped thing of the multilayer sheet opposes are joined, along the belt shape, and joining the two edge portions which oppose about the other sheet of the belt-shaped thing, to obtain an annular structure;    (2) hot platen protection sheet for lamination apparatus, that comprises a surface layer which becomes the surface of the side which contacts a conveyance sheet from the polyimide-type resin; and    (3) conveyance sheet for lamination apparatus, that comprises a surface layer which becomes the surface of the side which contacts a hot platen protection sheet from the polyimide-type resin.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the multilayer sheet.    Composite material layer (2)    Fluororesin (2a)    Heat resistant fiber woven fabric (2b)    Surface layer (3a)    Process surface (4)    Multilayer sheet (10)