Colors
| Single Screw Alone | Single Screw + Tek-MixTM |
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Why settle for this? |
When you can have this?
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Single Screw Processing: HDPE with 25% D&C Red #9 (Lake Red C), Organic Pigment
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Single Screw Alone: Extruder Only; single-screw extrusion, let down into PE at 2%, shown on a compression molded sheet; shown at 10X magnification.
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Single Screw Feeding a Tek-Mix™ Treater: Same product as at left, but processed instead using a Tek-MixTM Treater added, let down into PE at 2%, shown on a compression-molded sheet; shown at 10X magnification.
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| Twin-screw Alone | Twin-screw + Tek-MixTM |
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Why settle for this?
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When you can have this?
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Twin-screw Processing: The Same HDPE with 25% D&C Red #9 (Lake Red C), Organic Pigment Letdown at 2%, as Above
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Twin-screw Alone: Masterbatch by twin-screw, produced 59 to 108 μm diameter random particles; shown at 40X magnification.
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Twin-screw Feeding a Tek-Mix™ Mixer: Particle sizes have decreased to18 to 24 μm diameter; shown at 40X magnification.
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Example: Compounding Green from Blue Masterbatch, Yellow Oxide Powder, and Titaniam Oxide Powder
| Background: This example illustrates the blending of a blue masterbatch with a yellow inorganic pigment in order to create a homogenous green color. The blue masterbatch (0.48 MFI) with 50% colorant loading (the blue colorant is an organic and inorganic mixture), and thermally sensitive iron oxide yellow powder, were preblended with TiO2 powder. This preblend was then mixed with a MFI =1 resin (Petrothene NA 960-000 LDPE) and compounded into pellets. The yellow powder is extremely shear sensitive and degrades above 180°C, producing red iron oxide, which turns the mixture a dark brown in color. |
| The top-left pellets show improved dispersion with the Tek-Mix™ mixer. Without the Tek-Mix™ mixer, a single-screw extruder with a state-of-the-art dynamic mixer attached (lower right picture), could not, under any conditions, achieve a uniform mixture. |
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Twin-Screw Alone
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Twin-screw + Tek-MixTM
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Why settle for this?
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When you can have this?
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100 x magnification, blue + yellow, made from compression molded sheet
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Twin-screw Alone: The multi-colored mix above was produced using only a Twin-screw extruder. The mixture contains the original blue + yellow materials (see below), and after mixing, the resulting product was compression molded into a sheet; shown at 100X magnification.
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Twin-screw Feeding a Tek-Mix™ Mixer: The homogeneous mixture above was made from the same set-up as at left, but in this case, the Twin-screw extruder fed a Tek-MixTM Mixer. Again, the resulting pellets were compression molded into a sheet; shown a 100X magnification.
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Compare the following compression molded Press-Out results:
(A) Standard Single Screw
(B) Single Screw with Dynamic Mixer (C) Twin-screw Extruder (D) Single Screw Feeding a Tek-MixTM Mixer |
| (A) Single Screw Alone | (B) Single Screw + Dynamic Shear Mixer |
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Why settle for this?
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Or this?
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Single Screw Alone: Extruder only using a general purpose conveying screw.
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Single Screw Equipped with a Dynamic Mixer Same product as at left, but processed instead with the addition of a Dynamic Mixer.
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| (C) Twin-screw Alone | (D) Twin-screw + Tek-MixTM |
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Or even this?
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When you can have this?
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Twin-Screw Alone: Extruder Only; single screw extrusion.
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Twin-screw Feeding a Tek-Mix™ Mixer: Same product as at left, but processed instead adding a Tek-Mix™ Mixer.
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For an overview of Tek-MixTM Low Temperature processing temperatures click here.
For specific technical data covering the above examples, including processing temperatures, throughput rates, residence times, etc., please contact us.
Tek-MixTM - Extensional / Elongational Flow Mixing
The Next Step in Mixing & Blending
The Next Step in Mixing & Blending
