Foamed plastics continued types

Flexibility in operation because it is designed for more than one type of additive component it can easily be converted to process fillers or fibres or chopped scrap foam. Its range of application includes continuous reinforcing fibres, natural fillers (mineral or organic), pulverised plastics, etc. 

This is in contrast to the behavior of other types of plastics discussed above. It is likely to result from progressive removal of the embrittled layer of polystyrene foam by seawater continuously exposing fresh material to sunlight. Such a process would indeed accelerate the photodegradation but would not be operative for stationary samples exposed in air. This interpretation is consistent with changes... 

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