Plastic cups can be made up of a number of materials, polypropylene, polyethylene, polycarbonate. Depending on the detail required there are also a few manufacturing process that would be appropriate. Injection moulding is good for high levels of detail but is expensive. Rotational moulding is not as precise but alot cheaper.
Polystyrene. the opaque white cups that you can make fingernails impressions in, are foamed polystyrene. Clear sups that you get on an airplane are general-purpose polystyrene.
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If it is made of glass, yes. If it is made of wood, metal, plastic, or stone then no, it is opaque.
Opaque simply means you can't see through it. Depending on the blend of plastic it may or not be opaque.
Plastic in itself is a polymer. So plastic cups are simply made of fragus plastic.!
not necessarily.
look it up in a dictionary
Clear plastic is transparent.
I think strofoam is made out of some hard plastic.
We use it for plastic molds :) e.g. plastic cups, toys or things made of plastic.
The paper in dixie cups is made from wood
cups,pens,pates,silverware,plastic bags,sandwich tubs,ext.