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METHOD OF DISPENSING A MIXTURE OF RESIN AND EXPANDED THERMOPLASTIC SPHERES

  • US 3,780,942 A
  • Filed: 10/02/1972
  • Issued: 12/25/1973
  • Est. Priority Date: 10/02/1972
  • Status: Expired due to Term
First Claim
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1. A method for dispensing an admixture including a resin and expanded spheres having a particle size of up to about 200 microns, the method including the steps of providing a reservoir with the admixture including the resin and the expanded spheres, withdrawing the admixture from the reservoir at a pressure sufficient to displace the admixture from the reservoir, the admixture withdrawn from the reservoir being subjected to the withdrawal and movement pressure for a period of time insufficient to cause harmful rupturing of expanded spheres and insufficient to generate the amount of heat necessary to cause harmful curing of the resin, prior to being sprayed, and dispensing the admixture from a dispensing apparatus as converging streams that intersect prior to impinging upon a deposition surface.

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