Custom made special-shaped flexible polyurethane PU foam sponge   Bathtub toys colored soft foam sponge balls
 
categories: FILTER SPONGE, MEMORY FOAM/HIGH RESILIENCE FOAM, RETICULATED FILTER FOAM 
 
Description 
Has excellent resistance to water and humidity, and is therefore ideal for water and air filtration. The calibrated cell size and homogenous cellular structure allow these materials to be used in biotechnological and environmental applications; the high surface area of the foam supports the growth of microorganisms. These filter foams are resistant to mild acids and alkalis, salt water, fuel, organic chemicals, oils, lubricants, soaps, and detergents.
 
10ppi-60ppi reticulated open-cell polyether-based polyurethane foam
Product Description :
Filter foam also named reticulation foam, blasting foam.
Filter foam is a porous, low-density, reticulated flexible polyester/polyether urethane sponge.
With an open cell structure and three-dimensional skeletal strand structure. Available in pore size grades from 10PPI through 100PPI, in sheets or roll form.
The opening ratio of the filter reaches 90%~98%, it’s very suitable for filtration with permeability, well flexibility, well mechanical strength.
Application :
Industrial wastewater treatment, water pollution control, mechanical filtration, and pre-filtration of air and water. Although ideal for water filtration, polyether filter foams are also suitable for humidifiers, ventilation systems, and acoustic foam for loudspeakers. These foams can be washed and rinsed for re-use many times.
Specifications:
Raw material: (PU Foam) polyether or polyester foam
Porosity:10~60PPI
Other available auxiliary functions: mold preventing, absorbing harmful gases, fire retardant, etc.
Available shapes:sheet,strip,ball,roller,tube,other customized shapes
 
 
Cell Structure:
Reticulated filter foam operates as a depth-loading filter, as opposed to a surface-loading filter, essentially trapping dust particles within its cells.
The cell structure of filter sponge is remarkable in that each cell has a dodecahedron shape (12 sided), the cell’s walls or “struts” are comprised entirely of organic polymers (polyurethane, polyether, polyester) and the empty space or “windows,” between each strut, comprise 95% – 98% of the filter foam’s mass.
The size, shape & distribution of cells within filter foam can be manipulated during manufacture to provide precisely the desired porosity level, measured in PPI(pores per inch).

10PPI – 35PPI pore densities, approximately full scale

Foam Types and Uses:
Conventional PU foam (padding foam) for padding and packaging – the standard foam. These are available in different densities: A low-density foam is suitable for use in making children’s games or leg-rests – one way to look at it is that it is more suitable as backrests than as a seat cushion. The 35/55 grade is THE standard foam for all padding purposes including reclining cushions and seat cushions. Please note that foam with a higher density should be used, for instance, in the food services industry, in particular for seat cushions that must withstand heavy use or for overlay materials (cushions) that will have to endure a lot of punishment.
Our range of PU foams can be subdivided into the following categories:
Cold foam is an especially high-quality and durable PU foam that is particularly elastic. It is often used for making mattresses or extremely comfortable and high-quality seat or bench cushions.
Composite foam is a particularly firm foam. It is easily distinguished from other foams by its mottled appearance. Applications: thin seat cushions, bar stool or motorcycle saddle cushions, acoustic insulation, church kneelers, cushions for ale benches, etc.
Viscoelastic foam has a cotton wool kind of consistency, is extremely soft, and point elastic. It is especially great for making seat cushions for things like wheelchairs where the time spent sitting will be exceedingly long and comfort is a must. Its primary use, however, is as a mattress topper for increased comfort when sleeping.
Convoluted (egg crate) foam has an unusual three-dimensional surface that is ideal for packaging and acoustic applications.
Filter foam, which is endowed with a special permeability during the production process, is, as a result, used for technical purposes (we carry it primarily as a model-making material).
Lighter weight, less firm soft foams tend to be used in greater thicknesses because they are so easy to compress completely, which of course eventually robs them of the padding property. Heavier, firmer foams (for example, composite foam), on the other hand, are usually used in thinner profiles because their greater firmness means you do not need such a thick cushion to achieve comfort. Its greater density, however, means that it will be more expensive.
Subclassification:
Aquatic Filtration, Aquatic Foam, cellular foam, activated carbon filter foam, photocatalyst filter foam, air filter foam, fish tank filters, aquarium filter foam, pond filter foam, pond filter foam, water filter foam, reticulated polyurethane foam, dust filter foam, etc.