Patent ID: 6299718
Filing Date: 2001-10-09
Classification: B29C,Y10S,Y10T

Abstract:
A method of manufacturing a cylindrically-shaped article, comprising:(a) winding a first fiber reinforced plastics material having a first elastic modulus onto a mandrel to form at least one layer of the first fiber reinforced plastics material;(b) winding a second fiber reinforced plastics material having a second elastic modulus less than the first elastic modulus onto the at least one layer of the first fiber reinforced plastics material to form at least one layer of the second fiber reinforced plastics material, such that a number of layers of the first fiber reinforced plastics material is equal to or greater than a number of layers of the second fiber reinforced plastics material; and(c) repeating steps (a) and (b) at least once to thereby form subsequent layers of the first and second fiber reinforced plastics materials,wherein the first and second fiber reinforced plastics materials are wound at an angle of approximately .+-.17.degree. with respect to an axial direction of the mandrel for forming the internal diameter of the cylindrical part with at least 40 mm thickness.