DISPOSABLE WEARING ARTICLES AND A SEAM WELDER USED TO FORM THE SAME

摘要

The present invention is to provide wearing articles adapted to be identified one from another in one and same articles on the basis of a pattern of seam arrays (17) differentiated for every one of the wearing articles belonging to one and same articles and to provide a seam welder used to form the seam arrays. Front side edges (16a) and rear side edges (16b) of a diaper (1) are respectively joined by seam arrays extending in a longitudinal direction Y and thereupon a waist-opening and a pair of leg-openings are formed. The diaper comprises an inner sheet (18), an outer sheet (19) and a liquid-absorbent core (20) sandwiched between these inner and outer sheets. The inner and outer sheets are formed of heat-sealable fibrous nonwoven fabrics containing thermoplastic synthetic resins. Each of the seam arrays of the diaper comprises a plurality of seam-welded regions (21) and a seam-nonwelded region (22) left behind in the seam array. In the seam array, the seam-welded regions arranged so as to be aligned in longitudinal and transverse directions, each substantially shaped in a square, partially lack at a position differentiated for every one of specified patterns.