SOSSNA SS FILTRATION SANDS
Metallic sand as medium filtration should have the following characteristics:
- large active surface area, to give a good cleaning effect
- high porosity, to minimize the required pressure
- maintain a high porosity level during the filtration to minimize the pressure increase during the filtration
- be inert to the hot polymers, to avoid the degradation of the polymers
- not form fine particles even at high pressures to avoid downstream nozzles clogging
The metallic sand as filter pack for the filaments should contain one or two layers of different powder grain sizes. The best combination of the powder grain sizes depends mainly on the type of polymer used in the spinning process, its viscosity, its purity, its ability to polymerize, its melt temperature and its extrusion velocity.
Type DES is a Cr-Ni-alloy with in average 18% Cr and 6% Ni, similar to SUS 304.
Type DEE is based on SUS 201 with average 17% Cr and less than 2% Ni.
Both types are inert and corrosion resistant stainless steel alloys.
Delivery: In colored steels barrels of 50 kg. Color code according mesh size.
