Production of a hollow product by inflation of a tube or parison is called the _______________ process?
Correct answer: D. Blow moulding
- A. Injection
- B. Calendaring
- C. Extrusion
- D. Blow moulding
Explanation
Blow moulding forms hollow plastic articles by inflating a heated tube or parison against the walls of a mould. Calendaring makes sheets, while injection moulding normally fills a mould with injected melt.
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