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Electrostatic method for forming structures and articles

  • US 3,930,061 A
  • Filed: 04/08/1974
  • Issued: 12/30/1975
  • Est. Priority Date: 04/08/1974
  • Status: Expired due to Term
First Claim
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1. A METHOD OF FORMING A STRUCTURE FROM PLURAL COMPONENT MATERIAL WITH ELECTROSTATIC DEPOSITION COMPRISING FORMING A PROMOTED RESINOUS MATERIAL INTO A SPRAY AT ONE SITE;

  • ESTABLISHING AN ELECTRISTATIC FIELD FROM A CHARGING ELECTRODE ADJACENT THE SITE OF FORMATION OF THE SPRAY OF RESINOUS MATERIAL OT CHARGE THE SPRAY WITH ONE POLARITY;

    SIMULTANEOUSLY FORMING A CATLAYST MATERIAL FOR SAID RESINOUS MATERIAL TO CHARGE THE SPRAY WITH ONE POLARITY;

    CENT THE CHARGING ELECTRODE, AND CHARGING SAID CATALYST SPRAY TO THE OPPOSITE POLARITY FROM SAID PROMOTED RESIN, THE SITE OF FORMATION OF THE SPRAY OF CATALYST MATERIAL ACTING AS A TERMINOUS OF THE ELECTROSTATIC FIELD FROM SAID CHARGING ELECTRODE;

    AND PROJECTING THE SPRAYS FROM SAID SITES OF FORMATION SO THAT THEY CONVERGE AND MIX, THE VOLUME OF SAID SPRAYED RESIN BEING GREATER THAN THAT OF SAID CATALYST MATERIAL WHEREBY SAID SPRAY OF MIXED PROMOTED RESIN AND CATALYST RETAINS A NET CHARGE OF SAID ONE POLARITY, AND ARE DIRECTED FOR ELECTROSTATIC DEPOSITION ON A SURFACE MAINTAINED AT A SPRAY ATTRACTING POTENTIAL ON WHICH THE STRUCTURE IS TO BE FORMED.

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