초록 ▼

In this invention, a continuous elastic ribbon is fed to a diaper assembly station in a stretched condition while, at the same time, an adhesive is continuously applied to the elastic ribbon. Simultaneously, absorbent batts, as well as webs of moisture-impervious backsheet material and moisture-perv

In this invention, a continuous elastic ribbon is fed to a diaper assembly station in a stretched condition while, at the same time, an adhesive is continuously applied to the elastic ribbon. Simultaneously, absorbent batts, as well as webs of moisture-impervious backsheet material and moisture-pervious top-sheet material are fed to the diaper assembly station. Further, and simultaneously, while the webs are traveling to the assembly station, a release medium is applied to one of the said webs in selected areas thereof in a manner so as to overlie pre-determined, isolated portions of said stretched, elastic ribbon. At the assembly station, the stretched elastic ribbon is adhered to the moisture-impervious backsheet web along portions of the elastic ribbon which intervene the selected areas of the web where the release medium is located. After the adhesive has set up, the stretched elastic ribbon adheres to the moisture impervious backsheet between the release medium, and the elastic is severed in its unadhered areas, whereupon the unadhered portions become relaxed and inactive without affecting the functionality of the adhered portions in the ultimate assemblage.

대표청구항 ▼

A method for continuously attaching selected lengths of elastic ribbon to isolated portions of a moving, substantially inelastic web of inter-connected articles to impart an elasticized character to pre-determined isolated portions of said articles, while preserving the substantially inelastic chara

A method for continuously attaching selected lengths of elastic ribbon to isolated portions of a moving, substantially inelastic web of inter-connected articles to impart an elasticized character to pre-determined isolated portions of said articles, while preserving the substantially inelastic character of said articles in areas where said ribbon is unattached to said web, said method comprising the steps of: feeding an elastic ribbon to an assembly station in a stretched condition; continuously applying an adhesive to said stretched elastic ribbon along the length of said ribbon while said stretched elastic ribbon is being fed to said assembly station; feeding a web of inter-connected articles made with webs of substantially inelastic materials to said assembly station; applying a release medium to spaced, intermittent portions of one of said substantially inelastic webs; adhering the stretched, elastic strand to pre-determined, isolated portions of one of said webs in areas which do not have the release medium applied thereto; maintaining said elastic ribbon in a stretched condition at least until said adhesive sets up; cutting said elastic ribbon transversely in an area which is not adhered to said web, thereby forming severed, unadhered ends of elastic at both ends of each length of stretched, elastic ribbon adhered to said web; and allowing the severed, unadhered ends of said elastic ribbon to relax and contract to their unstretched state, whereby said unadhered ends do not impart an elasticized character to said web, nor do they interfere with the functioning of the elasticized portion of the web to which the selected lengths of elastic ribbon are adhered.