发明授权
- 专利标题: Method and apparatus for producing glass beads
- 专利标题(中): 生产玻璃珠的方法和装置
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申请号: US35697173申请日: 1973-05-03
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公开(公告)号: US3843340A公开(公告)日: 1974-10-22
- 发明人: CONE E
- 申请人: PPG INDUSTRIES INC
- 专利权人: Ppg Industries Inc
- 当前专利权人: Ppg Industries Inc
- 优先权: US35697173 1973-05-03
- 主分类号: C03B5/033
- IPC分类号: C03B5/033 ; C03B5/12 ; C03B19/10
摘要:
1. A METHOD OF FORMING GLASS BEADS COMPRISING (A) MELTING A GLASS BATCH IN A FURNACE TO FORM A GLASS MELT HAVING A VISCOSITY LESS THAN 100 POISES, (B) CONDUCTING THE GLASS MELT TO A NOZZLE AREA IN SAID FURNACE, (C) FORCIBLY DISCHARGING THE GLASS MELT THROUGH A SMALLDIAMETER ORFICE HAVING A DIAMETER OF 0.002 TO 0.125 INCH IN SAID NOZZLE UNDER A PRESSURE OF 1 TO 20 POUNDS PER SQUARE INCH TO FORM A GLASS JET, (D) DIRECTING THE GLASS JET OUTWARDLY FROM SAID ORIFICE WHEREBY THE GLASS JET BREAKS APART INTO PARTICLES DUE SOLELY TO FLOW INSTABILITIES OF THE GLASS JET, AND SAID PARTICLES, UNDER THE INFLUENCE OF SURFACE TENSION, FORM GLASS BEADS HAVING A DIAMETER OF APPROXIMATELY TWICE THAT OF SAID ORIFICE, AND (E) COOLING SAID GLASS BEADS TO ROOM TEMPERATURE.
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