Apparatus for molding nonwoven web into molded form

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing

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Details

156353, 156361, 4253051, 4254051, B32B 3100

Patent

active

055058159

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) leans 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:
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patent: 2325265 (1943-07-01), Millar
patent: 3351992 (1967-11-01), Carter
patent: 3382643 (1968-05-01), Hullhorst et al.
patent: 3546846 (1970-12-01), Sens
patent: 3645814 (1972-02-01), Knoepfler et al.
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patent: 4910064 (1990-03-01), Sabee
patent: 5169580 (1992-12-01), Marcus
patent: 5183708 (1993-02-01), Yoshida et al.
patent: 5294392 (1994-03-01), Marcus
Derwent Abstract of JP 1 321 903 (Kuraray KK) (27 Dec. 1989).

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