There are, currently, two primary methods of making a glass container the blow and blow method and the press and blow method. In both cases a stream of molten glass, at its plastic temperature (1050C-1200C), is cut with a shearing blade to form a cylinder of glass, called a gob. Both processes start with the gob falling, by gravity, and guided, through troughs and chutes, into the blank moulds. In the blow and blow process, the glass is first blown from below, into the blank moulds, to create a parison, or pre-container. Theparison is then flipped over into a final mould, where a final blow blows the glass out, in to the mould, to make the final container shape. In the case of press and blow process, theparison is formed with a metal plunger, which pushes the glass out, into the blank mould. The process then continues as before, with the parison being transferred to the mould, and the glass being blown out into the mould.
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B. Neeta Kumari (Oxeeco Technologies Pvt. Ltd)
B-6/4, IDA, Uppal, Hyderabad, Telangana - 500039, India
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