Discussion
Container glass is formed by
Answer: B
Correct answer: press and blow, or blow and blow
A gob of molten glass is delivered to a blank mould and formed into a parison - by a plunger in press and blow, or by air in blow and blow - and the parison is then transferred to the finish mould and blown to shape. Press and blow gives better wall thickness control and so lighter bottles; blow and blow is used for narrow necks.
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