Method for the separation of a mixture of polyvinyl chloride and

Details Method for the separation of a mixture of polyvinyl chloride and Method for the separation of a mixture of polyvinyl chloride and

1985-07-26

1986-10-14

Reeves, Robert B.

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Selective differentiation

209 2, 209167, 209173, 521 465, B03B 100

Patent

active

046171118

ABSTRACT:
A method for the separation of a mixture of polyvinyl chloride particles and polyethylene terephtalate particles comprising the steps of applying a solution composed of a low density solvent of polyvinyl chloride, water and sodium hydroxide to flakes of polyvinyl chloride and polyethylene terephtalate whereby the polyvinyl chloride absorbs the solvent contained in the solution, which changes the density of the polyvinyl chloride so that it is less than the density of the polyethylene terephtalate. The plastics may then be differential density separated by flotation or centrifugation and recovered.

REFERENCES:
patent: 3925200 (1975-12-01), Izumi et al.
patent: 4031039 (1977-06-01), Mizumoto et al.
patent: 4071479 (1978-01-01), Broyde et al.
patent: 4078916 (1978-03-01), Gerber et al.
patent: 4132633 (1979-01-01), Saitoh et al.
patent: 4578184 (1986-03-01), Rasmussen

Affiliated with

Also associated with

Rating

Method for the separation of a mixture of polyvinyl chloride and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the separation of a mixture of polyvinyl chloride and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the separation of a mixture of polyvinyl chloride and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1339168