Antimicrobial Polymers

Antimocrobial Polymers

SteriTouch® antimicrobial masterbatch is available for most polymers. At low addition rates, it offers excellent protection against bacteria, biofilm, fungi and mould, has no adverse effect on physical properties and will remain effective for the lifetime of the product it is incorporated into.

Uniquely, our extensive laboratory, moulding and testing facilities allow us to create solutions for almost any material. We operate small-scale extrusion too, allowing us to refine performance, utilise alternative carriers and quickly produce bespoke antimicrobial masterbatches for customer trials.

The components used in our masterbatches, as with our other products, are safe for food contact.

The active components are all EFSA and FDA approved, while all non-actives are either food contact approved or GRAS (Generally Regarded as Safe), so they can be used in applications where safety is paramount.

By tailoring the refractive index of the antimicrobial additive to that of the polymer, our transparent masterbatches minimise the haze associated with other antimicrobials.

Our proprietary manufacturing techniques eliminate the discolouration sometimes caused by antimicrobial masterbatches in optically transparent polymers.

We have over 75 years’ of expertise in polymer engineering, injection moulding and the manufacturing of plastic components, so we understand the processes and intricacies of moulding plastics.

Using a sample of your polymer, we mould plaques incorporating our masterbatch at a variety of addition rates. The plaques are submitted to an independent laboratory for antimicrobial testing and we provide you with a recommendation based on the results, along with a detailed test report.

Additives are available for all moulding processes, including cost-effective solutions for rotomoulding.

Our powder additive is specifically designed for rotational moulding and can be blended with standard polymer powders at very low dosing rates. The additive is designed to preferentially migrate, during the moulding process, towards the inner and outer surfaces of the moulding. This ensures that when the moulding cools the additive is fixed in place where it is needed most: on or near the surface.

Did you know?

It is recognised that the performance of some antimicrobial additives in PVC can be problematic due to its varied and complex chemistry; the same additive can provide excellent performance in some grades, but poor performance in others, even if the grades appear to be very similar. SteriTouch® has overcome this problem through the development of additive grades specifically for PVC. These grades are currently used in a diverse range of applications, from industrial matting to refrigerator seals.

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