Manufacturing apparatus for manufacturing different color pellets
US6149419A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Feb 5, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/002
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A first granulating unit A for molding molten resin of one color into pellets and a second granulating unit B for molding molten resin of the other color into pellets are provided in one screw type kneading extruder 1. The first granulating unit A is made to communicate with a discharge port 2a while the second granulating unit B is blocked. After the pellets of one color are molded in this state, the discharge port 2a is made open to the outside of the apparatus, and a thermoplastic resin material of the other color is kneaded and melted by means of the screw type kneading extruder 1, and discharged to the outside of the apparatus to thereby perform cleaning operation. Next, the second granulating unit B is made to communicate with the discharge port 2a while the first granulating unit A is blocked. In this state, the pellets of the other color are molded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.