Rider_cj
Industrial
- Oct 10, 2022
- 1
I'm trying to process rPET to see the effects of adding different additives. I'm extruding the rPET on a single screw extruder at 260°C 40rpm under nitrogen after it's been dried in a vac oven for min 6 hours. The pelletised material I'm getting out is transparent and looks good.
I'm now trying to press plates using a hot press and have been having issues. I'm currently pressing 1mm thick sheets at 290°C, 5mins at 50bar then 10mins at 200bar. Followed by 10mins, 200bar at cold water temp. The pressed sheets are coming out opaque and very brittle.
Does anybody know the best conditions and process to press out plaques which would be transparent? and ideally not too brittle?
Cheers
I'm now trying to press plates using a hot press and have been having issues. I'm currently pressing 1mm thick sheets at 290°C, 5mins at 50bar then 10mins at 200bar. Followed by 10mins, 200bar at cold water temp. The pressed sheets are coming out opaque and very brittle.
Does anybody know the best conditions and process to press out plaques which would be transparent? and ideally not too brittle?
Cheers