| abstract |
Preform, serving as a semi-finished product, for a container intended for containing products therein that are sensitive to radiation in particular light sensitive and food and dairy products, consisting of at least one base layer ( 1 ) made of a primary plastic base material, with a certain amount of additives ( 5 ) incorporated in it ( 1 ), characterised in that said preform ( 10, 20 ) is opaque over virtually the whole extent thereof, wherein a relatively low percentage of plastic additives ( 5 ) is incorporated to generate sard opaque appearance ( 22 ), so as to protect the inner space ( 9 ) thereof which is delimitated by it against external radiation (V 1 , V 2 ) particularly electromagnetic radiation, more particularly light, under normal pressure condition. |