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Narrow-neck glass containers are formed by _______ process.

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Narrow-neck glass containers are formed by _______ process.

(a) blow and press

(b) press and press

(c) press and blow

(d) blow and blow

The question was asked in my homework.

This interesting question is from Manufacture of Glass in portion Glass Packaging Materials of Food Packaging Technology

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The correct choice is (d) blow and blow

To explain: Narrow-neck glass containers (bottles) are formed by blow and blow process. Bottles are made by a two step Blow & Blow process, in which a gob of glass is sent to a cast iron mold. The cast iron mold is externally air cooled and hence changes gob to a perform (also known as a parison or body blank).

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