DISPOSABLE PULL-UP DIAPER AND METHOD FOR DISPOSABLE PULL-UP DIAPER MANUFACTURE Russian patent published in 2018 - IPC A61F13/496 

FIELD: human vital needs satisfaction.

SUBSTANCE: thickness (4W) of the side seam (4) is greater than the thickness of the section of each of the front portion (F) and the rear portion (R) that form the side seam, except the side seam (4). Each of the front portion (F) and the rear portion (R) forming the side seam has a multi-layer structure of a plurality of sheet-like elements, and the melting point of the constituent fiber of the at least one sheet-like element of the plurality of sheet-like elements is different from the melting point of the constituent fiber of the other sheet-like element. Each multilayer structure of the front portion (F) and the rear portion (R) includes a multilayer structure (41) having the innermost layer with a low melting point, the innermost layer of which is formed from the low melting element sheet (37), the melting point of which is the lowest of the plurality of sheet-like elements. The side seam (4) is formed by laser welding.

EFFECT: increased reliability and convenience.

28 cl, 6 dwg