Name: Polymer Defoamer PD-800
Brand: Coatingsink
SKU: polymer-defoamer-pd800
Availability: InStock

Question 1

Will PD-800 cause fisheye or crawling in acrylic or PU ink systems?

Accepted Answer

No. PD-800 is 100% silicone-free, so it carries zero risk of fisheye, cratering, or intercoat adhesion failure — a common concern when silicone defoamers migrate to the film surface. It is fully compatible with both acrylic and polyurethane binder systems used in waterborne flexo and gravure inks.

Question 2

At what stage should PD-800 be added during ink production?

Accepted Answer

For best performance, add PD-800 during the final letdown stage under moderate agitation (300–600 rpm). Pre-diluting in a small portion of the ink vehicle before addition improves dispersion homogeneity. Avoid high-shear milling after addition, as mechanical degradation can reduce defoaming efficiency.

Question 3

Is PD-800 effective at high press speeds in flexographic printing?

Accepted Answer

Yes. PD-800 is engineered for high-shear environments typical of flexographic printing lines running at 200–400 m/min. Its polymer backbone resists shear degradation, maintaining persistent foam knockdown throughout the press run without requiring top-up dosing.

Active Content	100%
Density (25°C)	0.92 g/ml
Viscosity (25°C)	900–1200 mPa·s
Recommended Dosage	0.1–0.5%
pH (10% dispersion)	7.0–8.5

Polymer Defoamer PD-800

Specifications

FAQ

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