03.06.25
Toyoshi Umebayashi, Osaka, Japan; and Hideki Fujita, Osaka, Japan.
Assigned to Zuiko Corporation, Osaka, Japan.
Filed: 6/4/21
Issued: 1/28/25
A method for manufacturing a cuff of a worn article, the method comprising: a step of conveying a first sheet in a longitudinal direction; a step of conveying a second sheet in the longitudinal direction; a step of sandwiching at least two continuous elastic members between the first sheet and the second sheet with the first sheet and the second sheet facing each other and with the at least two continuous elastic members spaced apart from each other and stretched; a step of thermally-bonding together the first sheet and the second sheet intermittently in the longitudinal direction to form thermally-bonded portions, thereby fixing the at least two continuous elastic members to the first and the second sheets, thus forming a laminate; a slit step of slitting the laminate along the longitudinal direction between the at least two continuous elastic members, thereby obtaining a pair of cuff members, each of the pair of cuff members having at least one continuous elastic member of the elastic members sandwiched between the first sheet, which has been split in two, and the second sheet, which has been split in two; a step of conveying the pair of cuff members so that one edge of one of the cuff members and another edge of another of the cuff members are spaced apart from each other, the one edge and the other edge having been produced by the slit step; and a step of arranging the cuff members on respective opposite edge portions of a crotch portion of the worn article, thereby forming the cuff on each of the opposite edge portions, wherein: a width of the first sheet is larger than a width of the second sheet, in the sandwiching step, the second sheet is laid over a central portion of the first sheet in a width direction, in the slit step, the slitting is performed so that the one edge and the other edge of the cuff members are corrugated, the one edge and the other edge each alternatingly includes valley portions closer to the continuous elastic member and mountain portions farther away from the continuous elastic member; and in the slit step, the slitting is performed so that, in a direction perpendicular to the longitudinal direction, the thermally-bonded portions extend from an outer edge side of the second sheet up to the valley portion of an inner edge but does not extend up to the mountain portion.
Assigned to Zuiko Corporation, Osaka, Japan.
Filed: 6/4/21
Issued: 1/28/25
A method for manufacturing a cuff of a worn article, the method comprising: a step of conveying a first sheet in a longitudinal direction; a step of conveying a second sheet in the longitudinal direction; a step of sandwiching at least two continuous elastic members between the first sheet and the second sheet with the first sheet and the second sheet facing each other and with the at least two continuous elastic members spaced apart from each other and stretched; a step of thermally-bonding together the first sheet and the second sheet intermittently in the longitudinal direction to form thermally-bonded portions, thereby fixing the at least two continuous elastic members to the first and the second sheets, thus forming a laminate; a slit step of slitting the laminate along the longitudinal direction between the at least two continuous elastic members, thereby obtaining a pair of cuff members, each of the pair of cuff members having at least one continuous elastic member of the elastic members sandwiched between the first sheet, which has been split in two, and the second sheet, which has been split in two; a step of conveying the pair of cuff members so that one edge of one of the cuff members and another edge of another of the cuff members are spaced apart from each other, the one edge and the other edge having been produced by the slit step; and a step of arranging the cuff members on respective opposite edge portions of a crotch portion of the worn article, thereby forming the cuff on each of the opposite edge portions, wherein: a width of the first sheet is larger than a width of the second sheet, in the sandwiching step, the second sheet is laid over a central portion of the first sheet in a width direction, in the slit step, the slitting is performed so that the one edge and the other edge of the cuff members are corrugated, the one edge and the other edge each alternatingly includes valley portions closer to the continuous elastic member and mountain portions farther away from the continuous elastic member; and in the slit step, the slitting is performed so that, in a direction perpendicular to the longitudinal direction, the thermally-bonded portions extend from an outer edge side of the second sheet up to the valley portion of an inner edge but does not extend up to the mountain portion.
