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01-17-2017

Millad NX 8000E Clarifier

Yields Glass-Like Optical Properties

Milliken & Co., Ghent, Belgium, has developed a new variant of its well-established Millad NX 8000 clarifying additive for polypropylene that it has tailored for use in the extrusion blow molding (EBM) process. This new additive performs significantly better in higher melt-flow-rate (MFR) grades of PP, and yields excellent results in both optics and productivity.

The new Millad NX 8000E clarifier yields glass-like optical properties (© Milliken)

According to the manufacturer, with the introduction of Millad NX 8000E, transparency in extrusion blow molding is no longer limited to PVC or PET. Millad NX 8000E has been designed specifically to provide a step change in optical properties with standard Ziegler-Natta polypropylene EBM resins. The additive enables PP to replace more expensive, less functional, or difficult to process materials. It yields polypropylene bottles with improved optical properties, specifically better clarity, superb gloss both inside and outside, lower haze, a low yellowness index, and an overall fresher look.

The optical properties of Millad NX 8000E resins also are less dependent on processing. Therefore, standard mold surface finishes (such as a glass-blasted finish) and processing temperatures for PP can be used without compromising quality. “With high MFR grades (MFR around 3),” Milliken Senior Development Engineer Bart Gabriels said, “this clarifier delivers a complementary effect that results in excellent optics and productivity.”

In tests conducted using two clear bottles of the identical size and design -- one made of PET, and the other of Millad NX 8000E-clarified PP -- the additive also revealed another key advantage: it empties its contents much faster, and more completely. The PP bottle contained 3 g less of leftover product, which translates into 30 t less waste (based on annual usage of 10 million such bottles) (see YouTube video about this study).

Company profile

Milliken Europe BVBA Milliken Chemikal

Ham 18-24
BE 9000 GENT
Tel.: +32 9 265-1084

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