Manufacturing method of resin tubes used in curtain and curtains made of the same

摘要

A method for manufacturing resin tubes used in curtains is enclosed. The method comprising the steps of: adding polypropylene and foaming agent to an extruder for melting and blending as a mixing material, feeding the mixing material to a mould; shaping the mixing material by passing the mixing material out of a ring-shape outlet of the mould so as to form with a tube; solidifying the tube in a cooling tank; and cutting the tube into a plurality of resin tubes each having a predetermined length. Also a resin tube for weaving curtains is related. The resin tube is made of foamed polypropylene resin.