Claims
- 1. A weak, but coherent dust-free agglomerate having a minimum size of about 1/8 inch comprising loose particles of a normally dusty material and fibers of fibrillated polytetrafluoroethylene resin distributed throughout said loose particles effective to provide coherence to the agglomerate, the fibers of the resin comprising less than 1 percent by weight of the agglomerate, the physical properties of the particles in the agglomerate remaining unchanged, said agglomerate characterized by an absence of particle to particle adhesion.
- 2. The agglomerate of claim 1 wherein the fibers of polytetrafluoroethylene resin comprise between about 0.02 percent and 0.75 percent by weight of the agglomerate.
- 3. The agglomerate of claim 1 wherein the particles of material are smaller than about 2,000 microns in size.
- 4. A weak but coherent dust-free agglomerate at least about 1/8 inch in size formed by mixing fibrillatable polytetrafluoroethylene resin in an amount up to 1% by weight, with a normally dusty particulate material to yield an intimate mixture and working said mixture at a temperature of at least 20.degree. C. but below the sintering temperature of said resin or the degradation temperature of said material, whichever is lower, to form a sufficient number of fibers from said resin to provide coherence to the agglomerate said agglomerate characterized by an absence of particle to particle adhesion and wherein the physical properties of said particulate material remain unchanged.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part application of our copending application Ser. No. 316,872 filed Dec. 20, 1972, now U.S. Pat. No. 3,838,092.
US Referenced Citations (3)
Foreign Referenced Citations (2)
Number |
Date |
Country |
891,537 |
Jan 1962 |
UK |
930,093 |
Jan 1963 |
UK |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
316872 |
Dec 1972 |
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