Methods for cleaning dies
AssigneeCorning Incorporated
InventorsDana Craig Bookbinder, Yuk Fung Chan, Lung-Ming Wu
Life of this patent
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Abstract
A method for cleaning batch material from an extrusion die includes introducing at least one gel composition into the die in a manner sufficient to purge the batch material from the die. After the batch material is purged from the die, the die can be treated further so that the gel composition is liquefied and flows from the die.
Claims16
A method for cleaning a ceramic batch material from an extrusion die comprising:
- introducing at least one gel composition that consists essentially of a gelling agent and a solvent wherein the gelling agent is selected from the group consisting of gelatin, agar, pectin, carrageenan, gellan gum, and xanthan gum into the die;
- purging the ceramic batch material from the die;
- rinsing the die with water to melt the gel composition;
- and
- flushing the melted gel composition from the die.
A method for cleaning ceramic batch material from an extrusion die comprising introducing at least one water soluble gel composition into the die in a manner sufficient to purge the ceramic batch material from the die, heating the die, and simultaneously or subsequently rinsing the die with water to melt the gel composition, wherein the ratio of the viscosity of the at least one gel composition to that of the ceramic batch material ranges from 0.02 to 100, wherein the gel composition consists essentially of a gelling agent and a solvent and the gelling agent is selected from the group consisting of gelatin, agar, pectin, carrageenan, gellan gum, and xanthan gum.
Dependencies are inferred from the claim text.