Method and apparatus for manufacturing a cushioning member

Details Method and apparatus for manufacturing a cushioning member Method and apparatus for manufacturing a cushioning member

1986-10-14

1988-05-10

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 1563803, 1563804, 1563807, 156500, 156530, B32B 3118

Patent

active

047433280

ABSTRACT:
A method and an apparatus for wrapping a cushioning member, particularly a sun visor, with a web of wrapping material formed from two blanks, in which one blank is placed on one main surface of the cushioning member and the second blank is placed on its other main surface. Each blank forms a continuously protruding flange in the center plane of the cushioning member. The flanges are clamped between two opposed web electrodes, and the flanges are welded peripherally to each other by high-frequency welding in such a manner than an inward-directed weld bead is formed by the flow of material at the flange edges facing the member. After the termination of the welding process, that is, after the disconnecting of the high-frequency voltage, the flanges remain clamped between the electrodes, possibly with an increase in the clamping pressure. Then the cushioning member is moved, by a punch that is movable perpendicular to the flanges, and is punched out (ejected) from the flanges, by being sheared from the flanges in the immediate vicinity of the flange edges facing the member, the web electrodes serving as auxiliary tools for the punch, one serving as a holder and the other as a die.

REFERENCES:
patent: 4451721 (1984-05-01), Nemeskeri

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