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Process for the preparation of a liquid-absorbing and shock-absorbing material

  • US 4,374,794 A
  • Filed: 03/26/1981
  • Issued: 02/22/1983
  • Est. Priority Date: 05/02/1980
  • Status: Expired due to Term
First Claim
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1. A process for the preparation of liquid absorbing and shock absorbing pellets comprising the steps of:

  • obtaining an aqueous suspension of fibers derived from waste sludge and consisting substantially of cellulose;

    adding an inorganic filler to said aqueous suspension in an amount sufficient to adjust the composition of said aqueous suspension to have 60 through 80 percent weight of fibers and 40 through 20 percent weight of filler calculated on a dry basis;

    partially dewatering said aqueous suspension to form a semi-dry mass having a water content of 40 to 80 percent by weight;

    extruding said semi-dry mass through a die sized to form said mass into plural pellets; and

    drying said plural pellets to adjust the composition of said plural pellets to have the bulk density of 150 to 400 Kg/M 3 and a water content of 0.5 to 10 percent by weight.

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