Patent ID: 7658876
Filing Date: 2010-02-09
Classification: B29C,B29K,B29L

Abstract:
1. A process for making a seamless tube from a liquid, comprising: providing a mandrel having a longitudinal axis, an outer surface and a length; providing a liquid material; providing one or more doctor blades, wherein said one or more doctor blades are spaced from said mandrel outer surface and are inclined at an angle α with respect to said mandrel longitudinal axis; applying said liquid to said outer surface and moving said one or more doctor blades along said longitudinal axis of said mandrel while rotating said mandrel around its longitudinal axis; providing one or more fingers overlying said mandrel and positioned upstream of said one or more of blades, relative to the direction of movement of said blades along the longitudinal axis of said mandrel, and moving the fingers with the one or more doctor blades to assist feeding of said liquid thereto; and converting said liquid material to form a seamless tube.