Method and apparatus for continuously attaching elastic strands

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

128284, 156229, 156289, 156324, 156522, 156549, 156551, A61F 1316, B32B 3108

Patent

active

043537626

ABSTRACT:
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.

REFERENCES:
patent: 3860003 (1975-01-01), Buell
patent: 4050462 (1977-09-01), Woon et al.
patent: 4081301 (1978-03-01), Buell
patent: 4227952 (1980-10-01), Sabee
patent: 4239578 (1980-12-01), Gore
patent: 4240866 (1980-12-01), Rega
patent: 4261782 (1981-04-01), Teed
patent: 4284454 (1981-08-01), Joa
patent: 4285747 (1981-08-01), Rega
patent: 4300967 (1981-11-01), Sigl

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