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US 6,146,560 AGranted
Process for forming an article from recycled ceramic molding compound
OwnerMohammad Behi, Anthony Fanelli +1inventors
InventorsMohammad Behi, Anthony Fanelli, Joan V. Burlew
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Abstract
Recycled, reground ceramic powder is mixed with a liquid carrier, a binder and processing additives to form a material useful for molding complex-shaped parts at relatively low pressures in conventional injection molding equipment.
Claims13
A process for forming an article comprising the steps of:
- a) formulating a molding compound from a mixture comprising
- i) recycled ceramic powder from a ceramic object,
- ii) a dispersant,
- iii) a pH control substance,
- iv) a biocide,
- v) a gel-forming material selected from the group of polysaccharides consisting of agaroids,
- vi) a gel-forming material solvent, and
- vii) a carrier,
- said mixture being formulated in a blender that provides shearing action thereto and the blender being heated to raise the temperature of the mixture to about 80 to 95.degree. C. to form the molding compound;
- b) supplying the molding compound at a temperature above the gel point of the gel-forming material into an injection molding machine;
- and
- c) molding the compound under conditions of temperature and pressure to produce a self-supporting article.
9 more elements
Dependencies are inferred from the claim text.