UV stability plays a very important role, where paling (yellowing) is detrimental to the product quality, outlook and life
The paling is a natural process caused due to oxidation which is a result of combined action of oxygen and light, specially UV light.
It has a high stability to light, obtained by means of special additives and meets RoHS and REACH standards.
The most critical aspects of UV Stable Foam are Hydrolysis Test and Sun Test (Colour fading). Resistance to light is evaluated on a Weather-o-meter and is expressed in terms of number of hours of exposure under xenon lamp that is considered necessary to reach a certain degradation or colour fading and is measured on Grey Scale index of 1 to 5 depending upon the product and customer requirements.
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