Patent ID: 8071001
Filing Date: 2011-12-06
Classification: A61M,B29C,B29L

Abstract:
1. Method for manufacturing plungers for medical syringes, said plunger comprising at least two parts including a longitudinal plunger body made of plastic and a piston body provided at a front end of the plunger body, which piston body comprises a plastic which is softer than the plastic of the plunger body, wherein said plunger, or at least a part of the plunger, is formed by first manufacturing the piston body and then the plunger body, or at least a part of the plunger body, by means of injection moulding, and wherein the plunger body, or said part of the plunger body, is injected against the piston body, said piston body having a front side and a side wall and being formed such that the front side and side wall thereof are free of any flash lines and/or gate points for the plastic.