Preform and bottle
US11472090B2 · kind B2 · utility
0Cited by
0References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2019 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Aug 20, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided is a method for manufacturing a preform (1). The method includes injecting into a cavity of a mold through the gate: (i) a first colored resin (R1) for a first predetermined time period, and (ii) a second colored resin (R2), having a color different from that of the first colored resin, for a second predetermined time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.