Method of producing a filled plastic syringe body for medical purposes
AssigneeSchott Glaswerke
InventorsMichael Reinhard, Ralf Bouffleur, Michael Spallek
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a filled syringe body within a single continuous manufacturing line in a self-contained environment with controlled conditions. The method includes the steps of injection molding the syringe body, sealing the one end of the syringe body, siliconizing the barrel of the syringe body, filling it, sealing the other end of the syringe, and sterilizing it. With this new "injection mold-fill-seal" method, a syringe body can be manufactured as a mass-produced article in one manufacturing line in an inexpensive manner.
Claims31
A method of manufacturing a filled plastic syringe body for medical purposes, the syringe body comprising a barrel having a rear end which is open and an outlet end with a head molded thereon and designed to accommodate an injection element, a plunger stopper for insertion into the rear end of the barrel to seal it, and an element for sealing the head, the method of manufacturing the syringe body including the steps of:
- a. forming the syringe body by injection molding a material into a core in a cavity of an injection mold, the mold having shape and preset inside dimensions;
- b. opening and mold and removing the formed syringe body, said body having an initial temperature;
- c. sealing one end of the barrel of the plastic syringe body;
- d. siliconizing an inside wall surface of the barrel of the plastic syringe body immediately after the body is formed and while the body remains substantially at said initial temperature;
- e. filling the plastic syringe body through the other end of the barrel of the plastic syringe body;
- and
- f. sealing the other end of the barrel of the plastic syringe body,
- wherein the method is carried out in a controlled environment within a single continuous manufacturing line.
A method of manufacturing a filled plastic syringe body for medical purposes, the syringe body comprising a barrel having a rear end which is open and an outlet end with a head molded thereon and designed to accommodate an injection element, a plunger stopper for insertion into the rear end of the barrel to seal it, and an element for sealing the head, the method of manufacturing the syringe body including the steps of:
- a. forming the syringe body by injection molding a material into a core in a cavity of an injection mold, the mold having a shape and preset inside dimensions;
- c. sealing the open rear end of the barrel of the plastic syringe body;
- d. siliconizing an inside wall surface of the barrel of the plastic syringe body immediately after the body is formed and while the body remains substantially at said initial temperature;
- e. filling the plastic syringe body through the outlet end of the barrel of the plastic syringe body;
- and
- f. sealing the outlet end of the barrel of the plastic syringe body, wherein the method is carried out in a controlled environment within a single continuous manufacturing line.
Dependencies are inferred from the claim text.