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Government and market forces are placing new challenges on filter
manufacturers that require innovative materials approaches. The
reduction of phenol and formaldehyde contents has become a critical
issue. Filter producers want "ovenless" manufacturing.
They want to eliminate the curing that adds time and expense to
the production process. And automotive and industrial customers
are demanding longer service intervals between maintenance. Yesterday's
dream of 100,000-kilometer (60,000 mile) air filters and 50,000-kilometer
(30,000 mile) oil filters are today's R&D objectives.
With one of the largest research teams in the industry, H&V
creates the advanced technologies that transform these challenges
into solutions. We produce the world's broadest range of resins
and composites. And we mix and match these materials to develop
media that specifically meet your most difficult applications.
H&V offers a wide range of resin technologies. These include
low-energy, water-based acrylic blends, no-cure vinyl acetate resin,
and fully cured acrylic resins.
In addition, we lead the industry with our development of advanced
cure resins. These include:
- Resoles - our most durable and water resistant resins
- Novolacs
- Resole-Novolac blends - with 50-90% curing
- Epoxy Phenolic - for higher water resistance and good temperature
stability
- 100% Epoxy - for emission-free and oven-free processing, our
most enviro-friendly resin
Composite materials are growing in popularity for engine and industrial
filtration. H&V offers a variety of composite media made exclusively
for the following applications.
- Long service intervals - Meltblown-cellulose and meltblown-nonwoven
composites offer high dirt holding capacity and moisture resistance.
- Common rail - Meltblown-cellulose composites provide high capacity
and moisture resistance
- Gas turbine - Meltblown-cellulose composites impart greater
capacity and high fractional efficiencies
- Cabin Air - Meltblown-spunbond and electrostatic composites
have low flow resistance and good efficiency
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