Polyurethane
adhesives and sealants provide strong bonding and tight
seals in a variety of applications. Polyurethane adhesives
provide the advantage of a rapid development of "green
strength," where the adhesive provides an initial
bond before fully curing. This reduces the need for
clamping and holding materials, thereby cutting costs
and increasing manufacturing and construction flexibility.
Since polyurethane chemistry is so versatile, custom
adhesives and sealants displaying a wide variety of
chemical and physical properties can be manufactured.
Polyurethane adhesives are used in the assembly of shoes,
automotive interiors, windshield bonding and as textile
laminates. Conveyor belts are usually closed using polyurethane
adhesives, and polyurethane binders are mixed with wood
chips or saw dust to form fiberboard. Polyurethane sealants
are used in road repair, plumbing, construction and
anywhere else a high-strength, water-resistant seal
is needed.
Polyurethane sealants provide excellent stress recovery
to retain shape after being bent or pulled, fast curing
rates and even adherence to non-primed concrete. And
unlike most other bonding agents, polyurethane adhesives
and sealants can be painted to match the surrounding
surfaces. |