PANORAMA IN TOUCH
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Photo credit: Holland Colours
wood and PVC foam. Weight reduction is also a key issue in wind blade design. Extending blade length to increase the amount of captured energy adds significant weight to the blade. SABIC’s LNP COLORCOMP WQ117945 compound can significantly reduce foam cell size (as much as three-fold) compared to standard nucleating agents such as talc, while decreasing cell size disparity by a factor of up to five. These factors help to reduce resin uptake by the foam during composite manufacture, resulting in a lighter-weight blade. In terms of strength and other mechanical properties, high-density PET foams can potentially compete with balsa wood, while avoiding wood’s natural variations. Further, as thermoformable polymers, PET foams offer greater freedom in the design and shaping of wind blades as compared to balsa. They also offer stable supply, cost-effectiveness, consistent material properties and much less resin uptake. Beyond PET Besides being used as an effective nucleating agent for foaming processes such as extrusion foaming, injection foaming and bead foaming, SABIC’s new nanotechnology solution can also act as a rheological modifier for improving melt strength and thermoformability. The nanotechnology SABIC is using can be adapted for other resins besides PET, making it a good candidate for use in a wide range of different industries.
AA scavenger Holland Colours: Colorants for PET with built-in TasteGuard
Holland Colours | Apeldoorn | Netherlands
no longer be valid per legal reviews of rules provided by the European Patent Office and the US Patent and Trademark Office. Therefore, Holland Colours’ TasteGuard will be available freely across all regions. TasteGuard is currently available in a solid 50% loaded format while a liquid format prototype is nearing launch. Next, a new solid 75% loaded version will soon be introduced, which creates less contamination in the recycling stream, causing less yellowing in rPET. The company’s AA blockers are not considered as active substances according to EU 450/2009. In fact, TasteGuard prevents AA from entering packaged water.
Taste consistency can be an issue with PET packaging, which is why Holland Colours offers PET colorants that include TasteGuard. During PET preform production, the molecule acetaldehyde (AA) is formed as a byproduct of PET. Although AA is a naturally occurring substance, it has a sweet taste and can cause an “off” flavor in applications such as bottled water. To prevent this from happening, an AA scavenger like Holland Colours’ TasteGuard can be used to prevent migration of AA into the bottle content. For 20 years, there were strict patents in place around the globe concerning this type of packaging additive and who could supply and produce it. In February 2021, these restrictions will
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