Method of recovery of printing ink wastes

Details Method of recovery of printing ink wastes Method of recovery of printing ink wastes

1993-03-19

1994-09-06

Drodge, Joseph W.

Liquid purification or separation

Processes

Separating

101491, 106 20A, 210774, 210808, B01D 114, B41F 3120

Patent

active

053445732

ABSTRACT:
A method for recovery of printing ink wastes is provided which greatly minimizes pollution problems attendant to the disposal of ink wastes, while permitting formulation of usable ink products from the wastes. The method involves first creating a flowable stream of material including the ink wastes, and directing this stream to a hydroheater (16) along with incoming steam. In the hydroheater (16), the ink wastes are subjected to elevated temperatures and pressures, and intense shear, creating a homogeneous, flowable output. This output may then be dried and powdered, and the powder may be reconstituted as a black ink suitable for commercial printing operations. If desired, the hydroheater (16) output may be treated in a filter press (252) to obtain a filter cake (258), and this cake (258) may be subsequently subdivided and treated with ink carriers to form a processing ink. In a preferred embodiment, dilute printer washup material containing up to 5% by weight residual ink therein may be directly processed in the hydroheater (16); this eliminates the need for preliminary chemical treatment and sludge formation.

REFERENCES:
patent: 74878 (1868-02-01), Baker
patent: 181597 (1876-08-01), Robertson
patent: 4391638 (1983-07-01), Fusce et al.
patent: 4563638 (1986-01-01), Zucker
patent: 4738785 (1988-04-01), Langston et al.
patent: 4747882 (1988-05-01), Schwartz et al.
patent: 4874515 (1989-10-01), McKelvey
patent: 4959661 (1990-09-01), Buxton et al.
patent: 5200094 (1993-04-01), Hill et al.

Affiliated with

Also associated with

Rating

Method of recovery of printing ink wastes 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 of recovery of printing ink wastes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of recovery of printing ink wastes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1327727