Improvements in methods and machines for moulding composite upholstery

摘要

Device for moulding composite cushioning (14) consisting of foamed plastic parts (14a, 14b) of different flexibilities consists of a mould (2, 3) with generally horizontal mould cavity and hinged cover (3) that define the cavity when closed. A generally rigid and smooth separating wall (6, 7) is movable w.r.t. the mould lower half (2). In the moulding position it is generally horizontal within the mould cavity; not touching either lower or upper surfaces of the cavity. The separator is supported at the back of the mould cavity or a hinge system. The separator can be raised sufficiently high after moulding when the cover is opened to clear the mould walls and allow forward withdraw of the cushioning from its support. The separation wall (6, 7) has a longitudinally curved profile consisting of three generally parallel longitudinal parts, the central part being relatively large compared to the outer parts. Also claimed is the prodn. process of (a) injecting foam (12) into base of mould; (b) injecting second foam (13) onto each part of the separating wall; (c) closing the mould cover and allowing foaming; (d) opening cover; (e) tilting separation wall out of the mould cavity; and (f) removing cushioning from separation wall by pulling forward. <IMAGE>