Resin syringe, prefilled syringe, and method for producing resin syringe
US12383679B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2023 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Aug 17, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2423/28
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for producing a resin syringe includes: a preparation step including: preparing a syringe body made of polyolefin, and preparing an ink comprising components including a volatile solvent that contains a dissolving component for dissolving the polyolefin, chlorinated polypropylene having a degree of chlorination in a range of 15 to 30%, a colorant, and a filler; an application step including applying the ink to at least a part of an outer surface of the syringe body, such that at least a part of the outer surface of the syringe body is dissolved by the dissolving component to form a plurality of recessed portions in the outer surface, each of the plurality of recessed portions is filled with at least one of the components of the ink; and a drying step including drying the applied ink to form a printing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.