Which of the following moulding processes is widely used for the manufacturing of plastic bottles?(a) Compression moulding(b) Injection moulding(c) Jet moulding(d) Blow mouldingI had been asked this question during an online interview.Asked question is from Blow Moulding and Thermoforming in section Moulding with Polymers of Casting-Forming-Welding II

Which of the following moulding processes is widely used for the manuf

1.	Which of the following moulding processes is widely used for the manufacturing of plastic bottles?(a) Compression moulding(b) Injection moulding(c) Jet moulding(d) Blow mouldingI had been asked this question during an online interview.Asked question is from Blow Moulding and Thermoforming in section Moulding with Polymers of Casting-Forming-Welding II
Answer» Right choice is (d) Blow moulding To ELABORATE: In blow moulding process, a heated tube of plastic material is situated between the TWO halves of mould, then the mould is closed and air or inert gas is usually blown at a PRESSURE of 200 – 400 bars, which HELPS in expanding of tube outward to occupy the mould cavity. After that the part cools down to get hardened and then the part is ejected from the mould.

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