Syringe including different materials
A syringe includes a syringe body, a syringe cone having a distal opening, and a connection arranged in the region of the syringe cone, wherein the syringe body includes a first material and the connection includes a second material, and wherein the first material is different from the second material and the second material is a softer material than the first material.
1. A method for producing a syringe including a syringe body having a first material and a connection having a second material that is softer than the first material, wherein the second material has an E-module that is 10 to 60% lower than the E-module of the first material, the method comprising:
producing the syringe through multicomponent injection molding, wherein the first material is a cycloolefin-copolymer (COC) or a cycloolefin-polymer (COP) and the second material comprises an elastomer.
2. The method according to claim 1 , wherein the connection comprises a thread.
3. The method of claim 1 , wherein the second material is sprayed onto the first material during the multicomponent injection molding.
4. The method of claim 1 , wherein the second material surrounds a syringe cone of a tip of the produced syringe.
5. The method of claim 1 , wherein the second material is a thermoplastic elastomer (TPE), an elastomer, a polypropylene (PP), a polycarbonate (PC), a polyethylene (PE), a polyamide (PA) or a COC-E.
6. The method of claim 1 , wherein the second material has a higher coefficient of friction than the first material.
7. The method of claim 1 , wherein the E-module of the first material is in the range of >2500 to 3500 MPa and the E-module of the second material in the range of 1200 to 2500 MPa.
8. The method of claim 1 , wherein the E-module of the first material is in the range of 2700 to 3200 MPa and the E-module of the second material in the range of 1500 to 1800 MPa.