Abstract: This manufacturing method is a method of manufacturing a compressed strip-shaped electrode plate. The method includes: a preliminary compression step of forming a pre-compressed strip-shaped electrode plate by roll-pressing an uncompressed strip-shaped electrode plate in which an uncompressed active material layer that is not yet compressed is formed on a current collector foil; an attraction and removal step of attracting and removing fine particles of active material particles from near a surface of a pre-compressed active material layer by an attracting magnet that is disposed so as to be separated from the pre-compressed active material layer in a thickness direction; and a main compression step of obtaining the compressed strip-shaped electrode plate by roll-pressing a particle-removed strip-shaped electrode plate from which the fine particles have been removed.

Abstract: This manufacturing method is a method of manufacturing a compressed strip-shaped electrode plate. The method includes: a preliminary compression step of forming a pre-compressed strip-shaped electrode plate by roll-pressing an uncompressed strip-shaped electrode plate in which an uncompressed active material layer that is not yet compressed is formed on a current collector foil; an attraction and removal step of attracting and removing fine particles of active material particles from near a surface of a pre-compressed active material layer by an attracting magnet that is disposed so as to be separated from the pre-compressed active material layer in a thickness direction; and a main compression step of obtaining the compressed strip-shaped electrode plate by roll-pressing a particle-removed strip-shaped electrode plate from which the fine particles have been removed.

Abstract: This manufacturing method is a method of manufacturing a compressed strip-shaped electrode plate. The method includes: a preliminary compression step of forming a pre-compressed strip-shaped electrode plate by roll-pressing an uncompressed strip-shaped electrode plate in which an uncompressed active material layer that is not yet compressed is formed on a current collector foil; an attraction and removal step of attracting and removing fine particles of active material particles from near a surface of a pre-compressed active material layer by an attracting magnet that is disposed so as to be separated from the pre-compressed active material layer in a thickness direction; and a main compression step of obtaining the compressed strip-shaped electrode plate by roll-pressing a particle-removed strip-shaped electrode plate from which the fine particles have been removed.

Abstract: A pressing device for an electrode plate has a free roll, which is in contact with one surface of an electrode plate, and a nipping bar that presses the electrode plate against the free roll when conveyance of the electrode plate is stopped. On a surface of the nipping bar on an electrode plate side, a concave surface is formed, which has a curvature matching a curvature of a curve of an outer surface of the electrode plate on the free roll. A first angle of the concave surface, which is seen from a central axis of the free roll when the nipping bar is in a pressed state, is included in a second angle of a contact region between the electrode plate and the free roll. A size of a first angle region is within a range of 10˜80% of a size of the second angle.

Abstract: A pressing device for an electrode plate has a free roll, which is in contact with one surface of an electrode plate, and a nipping bar that presses the electrode plate against the free roll when conveyance of the electrode plate is stopped. On a surface of the nipping bar on an electrode plate side, a concave surface is formed, which has a curvature matching a curvature of a curve of an outer surface of the electrode plate on the free roll. A first angle of the concave surface, which is seen from a central axis of the free roll when the nipping bar is in a pressed state, is included in a second angle of a contact region between the electrode plate and the free roll. A size of a first angle region is within a range of 10˜80% of a size of the second angle.

Abstract: The invention provides a rust inhibiting technology for zinc-coated and uncoated steel which insures at least the equivalent of results obtainable by the technology using a Cr-containing coating composition.This method comprises coating a zinc-coated or uncoated steel substrate with a water-based resin composition comprising a carboxylated polyolefin resin and 70-0 part by weight of solid matter of at least one member selected from the group consisting of polyurethane resin, polyester resin, acrylic resin, epoxy resin, and alkyd resin as supplemented with 0.01-0.5 part by weight of phosphate ion based on 100 parts by weight of total solid matter of said water-based resin composition and adjusted to a pH value of not less than 7, either followed by heating the coated substrate at 50.degree.-250.degree. C. to dry the coat or preceded by heating said steel substrate at 50.degree.-250.degree. C. to let the then-applied coat dry spontaneously.