MATERIALS, ADHESIVES AND COATINGS
Bulpren and Filtren — reticulated open-cell polyurethane foams for filtration, dust protection and carriers
Country: · Model: Bulpren, Filtren
Reticulated polyurethane foams with a fully open cell that hardly obstruct the flow of air or liquid and retain particles. Bulpren is made on polyester polyurethane, Filtren on polyether, and it is resistant to hydrolysis in a humid environment.
- Bulpren (grades H, P, R, S)
- reticulated polyester-based polyurethane foam, fully open cell structure without closed cells
- Filtren
- reticulated polyether-based polyurethane foam, hydrolysis resistant, for humid environments
- Structure
- especially high cell uniformity; different cell diameters
- Functions
- filtration of air, dust and liquids; protection of equipment from water, dust, sand at low pressure drop; carrier (polishing wheels, rollers, stamp pads)
Technical specifications
| Bulpren (grades H, P, R, S) | reticulated polyester-based polyurethane foam, fully open cell structure without closed cells |
|---|---|
| Filtren | reticulated polyether-based polyurethane foam, hydrolysis resistant, for humid environments |
| Structure | especially high cell uniformity; different cell diameters |
| Functions | filtration of air, dust and liquids; protection of equipment from water, dust, sand at low pressure drop; carrier (polishing wheels, rollers, stamp pads) |
| Supply form | rolls, sheets, die-cut parts, with and without adhesive layer |
| Processing | cutting, profiling, bonding; Bulpren — also flame lamination |
| Production | Duderstadt and Leverkusen (Germany), Wetteren (Belgium), Wolfhausen (Switzerland), Changzhou (China) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Reticulation removes the membranes between the cells and leaves only a three-dimensional skeleton of struts, so there are no closed cells and uniformity is high. The characteristics are set by the cell size. Bulpren is produced in grades H, P, R and S, and its main purpose is a filter that keeps water, dust, sand and other particles out of equipment at a low pressure drop. Certain grades are suitable as a carrier for polishing wheels, paint rollers, stamp pads and cosmetic applicators, and also for windshields of microphones. Filtren on polyethers has the same open structure but is hydrolysis resistant, so it is taken for humid environments. The foams come in rolls, sheets and die-cut parts, with and without an adhesive layer. They are cut, profiled and bonded, and Bulpren also allows flame lamination with other materials. Flame-retardant, antistatic and conductive versions are made to order. They are used in ventilation air filters, dust protection of electronics enclosures and motors, in liquid filters and separators.
How to choose
The choice is simple. For dry air and dust, and also for carriers, Bulpren is taken, and for a humid environment Filtren. The cell size determines the filtration fineness, and the smaller the cell, the higher the flow resistance. For sealing joints there is RegiSeal, for ceramic molten metal filters RegiCell at 7–50 ppi, and for acoustics Fireseal.
Request a price and lead time
Bulpren and Filtren — reticulated open-cell polyurethane foams for filtration, dust protection and carriers. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How does Bulpren differ from Filtren?
Bulpren is made on polyester, Filtren on polyether, and it is hydrolysis resistant, so it suits humid environments.
What does reticulated foam mean?
It is a foam from which the membranes between the cells have been removed, so a fully open skeleton without closed cells remains.
Can foam with an adhesive layer be ordered?
Yes, rolls, sheets and die-cut parts are supplied with and without an adhesive layer.
In which grades is Bulpren produced?
In grades H, P, R and S.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.