METHOD OF FORMING SLIDABILE FILM ON SYRINGE GASKET, SYRINGE GASKET ON WHICH SLIDABLE FILM IS FORMED, AND PREFILLED SYRINGE

摘要

PROBLEM TO BE SOLVED: To provide a syringe gasket provided with high slidability and reduced in variation in the slidability by forming a slidable film without defects and uneven application in the sliding portion of the gasket abutting on the inner wall surface of an outer cylinder for a syringe.;SOLUTION: In a medical syringe provided with the outer cylinder for the syringe and a plunger to be inserted slidably into the outer cylinder for the syringe, this method forms the slidable film in the sliding portion of the syringe gasket to be mounted at the tip of the plunger. The syringe gasket includes an annular outer wall, where an annular rib for sealing a fluid housed in the outer cylinder for the syringe by abutting on the inner wall surface of the outer cylinder for the syringe is formed. The method is provided with: an application process of applying a hardening resin fluid for forming the slidable film so as to coat the annular rib while rotating with the annular center of the annular outer wall as the rotation axis; and a hardening process of hardening the applied hardening resin fluid.;COPYRIGHT: (C)2011,JPO&INPIT