Method for molding nonwoven web into molded form

Details Method for molding nonwoven web into molded form Method for molding nonwoven web into molded form

1995-02-21

1996-02-06

Knable, Geoffrey L.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

191611, 156245, 156285, 156264, 264112, 264258, 264511, 264553, B29C 3104, B68G 700

Patent

active

054893518

ABSTRACT:
A molded cushioning article is made by stuffing a bulky, tape-form nonwoven web such as sliver in a mold cavity and thereafter heat-treating the thus-formed molded form to fusion-bond intersecting points of fibers. Stuffing of the tape-form nonwoven web is effected by laying and superposing it in to-and-fro movements on a molding surface of a mold permeable to air with a space on a backside of the molding surface being kept under reduced pressure. The apparatus used has (a) means for feeding the tape-form nonwoven web into the mold, (b) a mold permeable to air, (c) a mold-supporting frame, (d) suction means for keeping the backside space under reduced pressure, (e) means for successively changing a positional correlation between means (a) and the molding surface, and (f) heat-treating means for fibers to be fusion-bonded.

REFERENCES:
patent: 1003114 (1911-09-01), Kirchhoff
patent: 2325265 (1943-07-01), Millar
patent: 3351992 (1967-11-01), Carter
patent: 3645814 (1972-02-01), Knoepfler et al.
patent: 4696707 (1987-09-01), Lewis et al.
patent: 5169580 (1992-12-01), Marcus
patent: 5183708 (1993-02-01), Yoshida et al.
patent: 5294392 (1994-03-01), Marcus
Derwent Abstract of JP 1-321903 (Kuraray KK) (Dec. 27, 1989).

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