Abstract: To provide an active energy ray-curable varnish composition that can increase the content of raw materials derived from biomass and maintain its basic properties, such as compatibility. The varnish composition contains a compound having one or more ethylenically unsaturated bonds, wherein the varnish composition satisfies the following Conditions. Condition (A): the varnish composition contains a specific ingredient that has no ethylenically unsaturated bonds, has an sp value of 9.0 (cal/cm3)1/2 to less than 11.0 (cal/cm3)1/2, and comprises a compound having a structure derived from animal or vegetable ingredients in a content of 0.1 mass % to 50 mass % in the entire composition; and Condition (B): the varnish composition contains oil or fat that is derived from animals or vegetables and has an sp value of less than 9.0 (cal/cm3)1/2 or 11.0 (cal/cm3)1/2 or more in a content of less than 15 mass % in the entire composition.

Abstract: With a split-type vulcanizing mold, a proper clamping force of the mold is obtained without carrying out shim adjustment. A lower washer (16), disc springs (17), and an upper washer (18) are inserted into each of a plurality of cylindrical holes (15) defined on the circumference of a spacer ring (14). A spacer ring (14) provides an outer ring (8) with a pre-load so as to be tightened up by a bolt (12), so that the outer ring (8) can be smoothly moved without backlash in the axial direction thereof all the time. Selection is made on the disc springs (17) having a load such that a proper clamping force is obtained when a deflection of the disc springs (17) is equivalent to half a deflection at the time of the maximum load of the disc springs (17), and regardless of whether variation in dimensions, at the time of fabricating the mold, is on the plus side or minus side, the variation in dimensions is absorbed to thereby clamp the respective sector molds (6) with a proper clamping force.

Abstract: With a split-type vulcanizing mold, a proper clamping force of the mold is obtained without carrying out shim adjustment. A lower washer (16), disc springs (17), and an upper washer (18) are inserted into each of a plurality of cylindrical holes (15) defined on the circumference of a spacer ring (14). A spacer ring (14) provides an outer ring (8) with a pre-load so as to be tightened up by a bolt (12), so that the outer ring (8) can be smoothly moved without backlash in the axial direction thereof all the time. Selection is made on the disc springs (17) having a load such that a proper clamping force is obtained when a deflection of the disc springs (17) is equivalent to half a deflection at the time of the maximum load of the disc springs (17), and regardless of whether variation in dimensions, at the time of fabricating the mold, is on the plus side or minus side, the variation in dimensions is absorbed to thereby clamp the respective sector molds (6) with a proper clamping force.