Plastic article or earthenware shaping or treating: apparatus – Immersed shaping orifice discharging directly into liquid...
Reexamination Certificate
2011-01-25
2011-01-25
Gupta, Yogendra N (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Immersed shaping orifice discharging directly into liquid...
C425S069000, C425S377000
Reexamination Certificate
active
07874824
ABSTRACT:
Problems with incipiently gelling alginate or low-methoxy pectate sols in a bath of an aqueous solution containing calcium ions are reduced by having in the bath a perforated support surface which can be oscillated. The surface is preferably oscillated horizontally and vertically and preferably these oscillations are synchronised. Transport means to remove the product from the bath can be provided at one end of the bath. It is advantageous to ensure that at the beginning of the vertical oscillation the horizontal oscillation is in the direction of such transport means. Portions of the sol can be formed by extrusion either below or above the surface of the bath. The process is particularly useful for sols which have a sugar content greater than 10%. The invention also provides equipment comprising such a perforated support surface. Although the equipment is particularly useful for preparing alginate and low-methoxy pectate products it can also be used advantageously for other products which are formed in a bath and are susceptible to damage before they solidify adequately.
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USPTO Office Action dated May 27, 2008 in parent U.S. Appl. No. 10/488,329, filed Dec. 10, 2004.
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Barwick Bryan Edwin
Kelly Thomas Reid
Sawant Vijay Arjun
FMC Corporation
Gupta Yogendra N
Leyson Joseph
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