METHOD FOR PRODUCING POLYMER TUBE CONTAINING LIQUID AND BEING SEALED AT CONSTANT INTERVALS AND APPARATUS FOR PRODUCING POLYMER TUBE

摘要

Provided are a method and an apparatus for extruding into a tube and filling the tube at a high speed and simultaneously sealing the tube. Specifically provided is a method for producing a polymer tube, containing a liquid (L) therein and being sealed at constant intervals, the method including an extrusion step of continuously melt-extruding a polymer material through a die (12) into at least one tube, while feeding a liquid (L) into the tube to obtain at least one liquid-containing tube; and sealing step of discontinuously pressing the at least one liquid-containing tube between a pair of pressurizing members (17a, 18a) at constant intervals to cause pressure-bonding before the tube solidifies, while continuously taking up the extruded tube.