Ratio controlled mixing of liquids

Details Ratio controlled mixing of liquids Ratio controlled mixing of liquids

1975-06-13

1976-10-05

Kucia, Richard R.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264329, B29G 300

Patent

active

039845109

ABSTRACT:
Method for the controlled mixing of liquids in a predetermined ratio and is especially suitable for the dispensing of predetermined ratios of polyol and polyisocyanate liquids in the liquid injection molding of polyurethane articles. The ratio control is achieved by a master-slave relationship between at least two metering pumps of the plunger or piston type which are position coupled and inject on a common programmed velocity profile (in the master system), but with each system controlled by an automatic velocity feedback control loop (a closed loop system) wherein the reference signal into the slave automatic control system (typically the polyol system) is obtained in a suitable ratio from the master automatic control system (typically the polyisocyanate system). The method includes continuing to drive the metering pumps past the time that mixing is cut off.

REFERENCES:
patent: 2885268 (1959-05-01), Breer
patent: 3386623 (1968-06-01), Berrill
patent: 3390813 (1968-07-01), Alderfer
patent: 3409174 (1968-11-01), Radcliffe
patent: 3693946 (1972-09-01), Meritt
patent: 3726334 (1973-04-01), Sallberg

Affiliated with

Also associated with

Rating

Ratio controlled mixing of liquids does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ratio controlled mixing of liquids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ratio controlled mixing of liquids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-655503