Common variety of polyester is
(a) terylene
(b) polymer
(c) viscose
(d) spinneret
Answers
Explanation:
(a) terylene is a common variety of polyester
Explanation:
Liquid polymer under high pressure comes out of a spinning beam (die beam, die block) in the melt blown process (spinning fleece process) and will be blown and spun through high speed hot air and cold air into fine fibres (micro fibres), which will be collected by a takeup mesh and carried away. Nonwoven micro fibre fleece fabrics are produced by this method, which, depending on the application, could be produced in different densities, thicknesses, absorptivity, strengths and merged into several layers. Besides of the well-known fleece shirts and fleece jackets, other typical products are extremely light but high efficient respiratory filters, cabin filters and fuel filters, and also large absorption and isolating stuff, such as diapers, cushion fleece, or isolating mats. Single use clothes or vacuum cleaner bags are also manufactured out of micro fibres fleece.
The cleaning of these spinning beams