Method of making glass forming molds of an amorphous fused silic

Details Method of making glass forming molds of an amorphous fused silic Method of making glass forming molds of an amorphous fused silic

1990-08-14

1992-09-22

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

65 181, 249134, 264220, 264333, 264337, B29C 3338

Patent

active

051494744

ABSTRACT:
A mold for the manufacture of non-round glass shapes and method for making such molds. In molds for glass blowing and pressing, especially for producing non-round shapes where molten glass must be in contact with the mold for an extended time, an economical, heat resistant mold adaptable to any shape is produced by mixing defined ratios of water, hydraulic compound and amorphous fused silica to form a pourable composite mixture which is shaped into a mold by placing the mixture on or in a master pattern and curing the mixture at room temperature and then at elevated temperature.

REFERENCES:
patent: 3285873 (1966-11-01), Bailey
patent: 3607325 (1971-09-01), Spangler et al.
patent: 3947550 (1976-03-01), Fitchmum
patent: 3952083 (1976-04-01), Fletcher et al.
patent: 4533394 (1985-08-01), Watts

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