Automated spreading has been demonstrated as a key parameter for improving repeatability and reproducibility of the In Vitro UV tests compared to manual spreading.
The HD-SPREADMASTER from HelioScreen is a robot which carries out the automatic spreading of the sunscreen on the substrate. It allows a total control of the product spreading and ensures the reproducibility of the In Vitro UV testing with a very low variability range.
The specifications of this appliance are (i) robot with 6 independent motors, (ii) spreading step using 3 circular strokes (three 90° rotations) and 3 linear strokes (three 90° rotations) within 1 minute, (iii) silicone finger tool’s hardness between 20-25 shores, (iv) a spring and (v) a pressure level approximately 6 Newtons.
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