
Material:A. Thermoplastic- Heated melt- Cooled → back to its original kesifatExample: Polyethylene, polypropylene, polystyreneB. Thermosets- Heated melt- Cooled → does not return the original kesifatExample: polyurethane, epoxy, elastomerbut that dipake Polyethylene- Having the flexibility at room temperature and low temperature- In-water- Resistant to chemicals- Can be connected with heated (soldered)- It can be colorfulBottles are generally made...