Sponge Filter Cartridges

Sponge cartridges are a new generation of micro-porous filter elements. The continuous dendritic pore structure gives fine pores, high flow, high filtration ratings, low flow resistance and no fibre shedding, with porosity above 90%. Because the pore diameter can be adjusted in production, the filtration rating can be tuned to the application.

Typical industries: petroleum, chemical, metallurgy, machinery, coatings and inks, water treatment, food and beverage, automotive, marine, electronic photo-sensitive materials and precision instruments.

Key specifications

Material	PVF (polyvinyl formal) / PVA / PU
Process	Micro-pore forming, continuous dendritic pore structure
Filtration rating	Adjustable via pore diameter; porosity above 90%
Size range	Pore size adjustable to duty
Applications	Petroleum, chemical, metallurgy, machinery, coatings and inks, water treatment, food, automotive, marine, electronics, precision instruments
Customization	Custom production from customer drawing or sample; sample quantities for validation

Product shapes & size range

Product shape Product shape	Rods Rods		Tubes Tubes			Standard sheets Standard sheets		Others Others
Product size range Product size range Unit: mm	Outer dia. / side length Outer diameter / Side length	Height High	Outer dia. Outer diameter	Internal dia. internal diameter	Height High	Outer dia. / side length Outer diameter / Side length	Thickness Thick	All kinds of special-shaped products All kinds of special-shaped products
	Φ1.0~Φ80	1.0~80	Φ2.0~Φ50	Φ1.0~Φ46	2.0~70	Φ1.0~80	1.0~75
Filtration rating Filtration accuracy	0.5 μ~50 μ			Working temperature Operating temperature		-200℃~+90℃

Material grades & core parameters

Material	Filtration rating	Porosity	Operating temperature	Max pressure
PVF (polyvinyl formal)	0.5-50 um (per series table)	Above 90%	-200 to +90 C	Per specification
PVA	0.5-50 um (per series table)	Above 90%	-200 to +90 C	Per specification
PU (polyurethane)	0.5-50 um (per series table)	Above 90%	-200 to +90 C	Per specification

Typical product forms

Product form	Material	Size / rating / notes
Sponge rod	PVF / PVA / PU	Outer dia. 1.0-80 mm; height 1.0-80 mm; rating 0.5-50 um; -200 to +90 C
Sponge tube	PVF / PVA / PU	Outer dia. 2.0-50 mm; internal dia. 1.0-46 mm; height 2.0-70 mm; rating 0.5-50 um
Sponge sheet	PVF / PVA / PU	Outer dia. / side length 1.0-80 mm; thickness 1.0-75 mm; rating 0.5-50 um
Sponge flow-control element	PVF / PVA / PU	Continuous dendritic pore structure; no fibre shedding; pore size adjustable to duty