Abstract: A sheet type discrimination device includes: a first light source unit that irradiates a sheet with light having a first wavelength and light having a second wavelength; a detection unit that detects light from the sheet and acquires a detection value based on the light; and a control unit that derives a determination result of a type of the sheet, wherein the first light source unit and the detection unit are located on a same side with respect to the sheet, the detection value includes: a first detection value; and a second detection value, and the control unit discriminates first-type recycled paper by first processing using the first detection value, and discriminates second-type recycled paper different from the first-type recycled paper by second processing using the second detection value.

Abstract: A rubber tape for making up a rubber component of a tire has a specific shape wherein a fin is provided on each side of a central part, the central part has a thickness of 0.3 to 1.5 mm, the fin has a thickness less than the thickness and a width of from 0.5 to 5.0 mm. A method of manufacturing a tire comprises a step of making at least one of rubber components by winding the rubber tape. An apparatus for making the rubber tape comprises an extruder and a pair of calendar rollers, wherein the extruder includes a die having an extruding hole from which compounded rubber is extruded into a rectangular cross sectional shape, the extruding hole has an opening width WA1 of from 0.6 to 0.9 times the whole width W0 of the rubber tape and an opening thickness HA1 of from 1.5 to 7.