Resin syringe, prefilled syringe, and method for producing resin syringe
US11975178B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2023 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | May 16, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2423/28
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A resin syringe includes: a syringe body made of polyolefin, and a printing layer having a shape that extends in a band around an outer surface of the syringe body. The printing layer comprises components including chlorinated polypropylene having a degree of chlorination in a range of 15 to 30%, a colorant, and a filler. A plurality of recessed portions is formed in the outer surface of the syringe body on which the printing layer is printed and the recessed portions form a shape that extends in a band around the outer surface of the syringe body and that is entirely covered by the printing layer. Each of the recessed portions has a depth of 50 nm or more and less than 1 μm and a width of 50 nm or more and less than 1 μm and is filled with at least one of the components of the printing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.