Roll press apparatus for manufacturing compressed strip-shaped electrode plates

A roll press apparatus configured to form a compressed strip-shaped electrode plate formed with a compressed active material layer, which is formed in a manner that a strip-shaped electrode plate is conveyed in a longitudinal direction to be roll-pressed so that an active material layer is compressed,

• the strip-shaped electrode plate comprising:
• an active material portion including a strip-shaped current collecting foil and the active material layer of a strip shape extending over the current collecting foil in the longitudinal direction of the current collecting foil, the active material portion of a strip shape extending in the longitudinal direction and including the active material layer in a thickness direction of the current collecting foil, and
• an active material absent portion of a strip shape extending in the longitudinal direction and being arranged on a side of the active material portion in a width direction of the current collecting foil, the active material absent portion having no active material layer in the thickness direction and having a smaller thickness than the active material portion, wherein
• the roll press apparatus includes:
• a pair of press rolls placed in parallel with a roll gap formed therebetween;
• and
• a tensile-force-ratio adjustment mechanism configured to adjust a tensile force ratio τd/τu of an upstream active material absent portion tensile force τu and a downstream active material absent portion tensile force τd to be within a range greater than or equal to 0.3 and less than or equal to 2.0, wherein the tensile-force-ratio adjustment mechanism includes one or more of an upstream-direction tensile roll or a downstream-direction tensile roll, in an inter-roll active material absent portion held with no compression by the pair of press rolls of the active material absent portion of the strip-shaped electrode plate.