Abstract
The use of the Gelometer described previously has been extended to the measurements of rayon flock. By taking load-versus-compression readings in a precise and simple manner with the new Compressometer, the resist ance of materials in bulk form to compression can be de termined directly. Also, the elastic recovery and the work consumed in the total compression and decompression cycle can be found. In addition to evaluating constants of material, such as the influence of the length of the indi vidual filament and the variations resulting from changes in diameter or denier, this method also permits the investi gation of auxiliaries attached to the flock. This becomes of significance in sizing treatments of flock, and in the influence of chemical processes upon its resiliency. By following the manufacture of flock through with the aid of the "Compressometer," cutting and grinding methods may be investigated as they relate to the quality of the output desired and improvements may be made in the man ufacturing procedure, resulting in a product of increased value to the consumer as well as a lower production cost. Going beyond the industrial requirements, the compres sion tests described open up new vistas by furnishing a method whereby all types of small materials as such may be investigated in bulk form, and also the influence of the materials that fills the space between the particles.
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