Plastic particle coated with processing aid and method of coating
US5006368A · kind A · utility
13Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1990 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Apr 18, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2077/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Plastic particles showing improved behavior upon extrusion, comprising coating the particles with a fused layer of certain waxes or polymeric materials; and a method of preparation, comprising heating the plastic particles to a temperature just below the softening or fusing temperature of the additive while blending the particle in a high intensity blender, introducing the additive and maintaining intense blending until the temperature is above the fusing temperature of the additive, and discharging the coated particles from the blender.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.