Granulating device for thermoplastic resin
US5747077A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Nov 13, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2793/009
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A granulating device, and a granulating method for thermoplastic resin material, in which a screw type kneading and extruding machine for kneading, extruding and melting the thermoplastic resin material, a die holder connected to a front end portion of the screw type kneading and extruding machine, the die holder including a passage through which the melted resin material flows, a change-over valve and at least two outlets, the passage selectively connected to the outlets with the change-over valve, a first and a second dies, for forming the melted resin material into a plurality of pieces of string, connected respectively to the outlets to adapt to different ranges of viscosity of the melted resin material, and a first and a second cutter units including cutters moved respectively along extruding planes of the first and second dies to cut the string-shaped resin material into small pieces, and cooling and solidifying sections for cooling and solidifying the small pieces of thermoplastic resin material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.