An adjustable strand threading and lubricating device for prefabricated box girders includes an underframe. Multiple first spline shafts are rotatably installed between left and right side walls of the strand threading boxes. The first openings are respectively located above the first spline shafts, first sliding blocks are respectively provided and configured to slide up and down in the first openings, multiple second spline shafts is rotatably installed between two first sliding blocks, and axes of the second spline shafts are parallel to the first spline shafts. The first spline shafts and the second spline shafts are slidably provided with multiple strand threading units for threading steel strands, a lubricating unit is arranged on a front side of the strand threading units, and a bundling unit is arranged on a rear side of the strand threading units.

An adjustable strand threading and lubricating device for prefabricated box girders includes an underframe. Multiple first spline shafts are rotatably installed between left and right side walls of the strand threading boxes. The first openings are respectively located above the first spline shafts, first sliding blocks are respectively provided and configured to slide up and down in the first openings, multiple second spline shafts is rotatably installed between two first sliding blocks, and axes of the second spline shafts are parallel to the first spline shafts. The first spline shafts and the second spline shafts are slidably provided with multiple strand threading units for threading steel strands, a lubricating unit is arranged on a front side of the strand threading units, and a bundling unit is arranged on a rear side of the strand threading units.

An apparatus and method for manufacturing an elastic composite structure for an absorbent sanitary product includes at least one structure that guides web layers in a machine direction, an elastic thread combiner that combines a plurality of elastic threads to form a combined elastic thread assembly, and a bonding unit. The bonding unit bonds the web layers together via a bond pattern that includes bond lines that each have at least one pair of adjacent bonds, which anchor the combined elastic thread assembly within a passage defined by a pair of adjacent bonds in each of the plurality of bond lines. The passage is narrower than the combined elastic thread assembly in a non-tensioned state and wider than one of the plurality of elastic threads in a non-tensioned state.

An apparatus and method for manufacturing an elastic composite structure for an absorbent sanitary product includes at least one structure that guides web layers in a machine direction, an elastic thread combiner that combines a plurality of elastic threads to form a combined elastic thread assembly, and a bonding unit. The bonding unit bonds the web layers together via a bond pattern that includes bond lines that each have at least one pair of adjacent bonds, which anchor the combined elastic thread assembly within a passage defined by a pair of adjacent bonds in each of the plurality of bond lines. The passage is narrower than the combined elastic thread assembly in a non-tensioned state and wider than one of the plurality of elastic threads in a non-tensioned state.