Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores
Patent
1995-01-27
1997-05-27
Kuhns, Allan R.
Plastic article or earthenware shaping or treating: apparatus
With mechanical means forming or expanding pores
425150, 425259, 425453, 249160, B28B 150
Patent
active
056330170
ABSTRACT:
This invention relates to a process for manufacturing cushion and mattress elements made of supple, open-cell cellular matter, by casting into a mould, from a head ensuring mixture of at least two basic components, of the product thus formed; said mould is transferred from a preparation station where a demoulding agent is projected, to be presented beneath said head; the latter is displaced along a continuous path covering at least all the surface of the mould and at a speed ensuring, on the one hand, a uniform distribution of the product and, on the other hand, a total time of passage less than the maximum expansion time of the product projected at the beginning of this path; a cover is closed on said mould, and the latter is transferred towards standby stations where it remains thus for a time longer than that of maturing of the cellular matter obtained; the cushion element thus constituted is removed and the mould is transferred back towards the preparation station.
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patent: 4215730 (1980-08-01), Oswald
patent: 4532093 (1985-07-01), O'Malley
patent: 4720253 (1988-01-01), Koentges
patent: 5244610 (1993-09-01), Kitzmiller
patent: 5348458 (1994-09-01), Pontiff
patent: 5460497 (1995-10-01), Vismara
Benguigui Paul
Sebag Albert
Askle
Kuhns Allan R.
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