Abstract: A process for producing articles of polytetrafluoroethylene (PTFE) is disclosed. The process allows some of the conventional plastic fabrication techniques to be used with PTFE which until now have not been possible. The process comprises the steps of intensively mixing and thermokinetically heating PTFE resin in an enclosed container with a plurality of blades attached to arms rotating about an axis, with a blade tip speed of at least 30 meters/second, to a predetermined discharge temperature of above 370.degree. C., discharging the resin at the discharge temperature, forming the resin into a desired shape at a temperature at or below the discharge temperature, holding the resin in the desired shape above a predetermined forming temperature for a predetermined time, and cooling the resin in the desired shape.

Abstract: A powder blend of rigid polyvinyl chloride resin having higher packing densities than previously known is disclosed. The higher packing densities provide improved physical properties and production rates. There is also disclosed a process for the manufacture of a powder blend of suitable thermoplastic polymer resins having high packing densities for processing into articles. The process includes mixing and thermokinetically heating a batch of powder blend in a high intensity mixer having a plurality of blades attached to arms rotating about an axis with a blade tip speed of at least about 25 meters/second to a predetermined temperature below commencement of agglomeration, and cooling the batch in a high intensity mixer having a plurality of blades attached to arms rotating about an axis with a blade tip speed less than about 16 meters/second but sufficient to attain high packing densities, to a temperature at which the batch can be stored without agglomeration occuring.

Abstract: A process is disclosed for separating bitumen from a bitumen tar deposit. The process is a mechanical separation process which is simple, economical and yet does not require high energy consumption. The bitumen sand deposit includes sand particles with coating of bitumen thereon. The process comprises the steps of feeding the bitumen sand deposit and a dispersing medium into an enclosed container having a plurality of arms therein, adapted to rotate about a central axis, each arm having a blade at the end thereof, rotating the plurality of arms, striking and impelling the sand particles to impact on internal surfaces of the blades and container and with other particles, the blades having sufficient tip speed to cause separation of the bitumen coatings from the particles, discharging the sand particles, bitumen and dispersing medium from the container, and collecting the bitumen separately from the sand particles and dispersing medium.

Abstract: A process for producing articles of ultra high molecular weight high density polyethylene is disclosed which avoids long heating and cooling cycles, and compacting pressures in the order of 3,000 to 4,000 lbs/sq. inch. The resin is intensively mixed and thermokinetically heated in an enclosed container with a plurality of blades attached to arms rotating about an axis with a blade tip speed of at least 18 m/sec. until the resin reaches a desired discharge temperature of at least 135.degree. C. After being discharged from the mixing step, the ultra high molecular weight resin is formed into the desired shape within a time such that degradation does not occur.