If you want to minimize the effect, use a high concentration color in a 50-to-1 let down ratio. For coloring TPEs, GLS recommends that you use high screw speeds (100-200 rpm), high back pressure (100psi), and a higher degree of ramping of the temperatures in the barrel. However, high molecular weight polystyrenes may not mix well with the smaller molecular weights of the Kraton polymer end blocks in the TPE.

Gas trapped between polymer fronts High injection pressure and melt temperature Incompatible color concentrate

Gas trapped between polymer fronts High injection pressure and melt temperature Incompatible color concentrate

Whether you’re designing an MRI machine or a handheld imaging device, Avient polymer materials will help you deliver equipment that’s functional, protective, and compliant. High-temperature Healthcare Colorants: Colorant Chromatics™ Transcend™ Avient Design

Polymer vehicle interior delivers ‘wow’ factor, $500,000 in annual savings After a successful trial, the OEM was convinced it could shift from fabric to a polymer interior using the color and additive concentrates.  Further savings came from improved operational efficiency, based on the high consistency and stability offered by the new color and additive concentrate.

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These additive concentrates and pre-compounds enhance hydrophobicity in injection-molded polypropylene components, delivering high-performance water, solvent, and lab solution repellency. Colorant Chromatics™ Transcend™ Premium Healthcare Colorants: These high-temperature formulations are engineered to provide vivid, biocompatible colors for medical devices. The Mevopur product line also includes color and additive concentrates based on polymers with 70%-100% bio-content and pre-tested raw materials which can help to reduce carbon footprint and offer alternatives to fossil-based grades.

Here are a few points to consider when designing part molds for styrene-ethylene/butylenestyrene polymer based TPEs (SEBS TPEs), or styrene-butadiene-styrene polymer based TPEs (SBS TPEs): The gates on these types of molds should have as short a land length as possible to create high stress concentrations. SBS TPEs that are held at high temperature for long times are capable of crosslinking.

Here are a few points to consider when designing part molds for styrene-ethylene/butylenestyrene polymer based TPEs (SEBS TPEs), or styrene-butadiene-styrene polymer based TPEs (SBS TPEs): The gates on these types of molds should have as short a land length as possible to create high stress concentrations. SBS TPEs that are held at high temperature for long times are capable of crosslinking.

So when a particular customer came to Avient wanting to displace non-recyclable dairy packaging, we accepted the challenge. ColorMatrix™ Lactra™ SX Light Blocking Additives for PET provided high-performance light blocking technology and enabled a recyclable alternative to long-life dairy packaging. This additive is particularly suitable in packaging for ultra-high temperature (UHT) liquid dairy products, as these types of products have a longer shelf life, making them more susceptible to light-induced oxidation due to ambient storage conditions.