plastic ariadna tania liza mariona
TRANSCRIPT
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• El PVC és el plàstic que es feia servir abans, aquest contaminava l’aigua. Actualment el plàstic es diu PET i aquest no contamina l’aigua.
• El pet ,és un tipus de plàstic fet d’una resina que no contamina gens l’aigua.
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• El pet es comença a fabricar quan es desfà a 300º C.
• Un cop desfet es fan com una mena de tubs de plàstic en el qual se li va un forat al cap de vall.
• Després de tots aquets tràmits s’infla el tub a 100º C .
• Es deixa refredar i es converteix en la teva ampolla ideal.
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