UV stabilisation protects your product made
of plastic resin from sunlight.
Polymers can be destroyed by the high energetic
UV rays of the sunlight. A chain reaction follows, breaking
further polymeric bonds by radicals.
The accelerated ageing processes will cause
a reduction of the mechanical properties such as impact strength,
elongation at break and tensile strength.
Eventually there will be several visual damages like discolouration,
reduction of transparency and gloss, blooming effect and finally
cracks on the surface.
An effective UV protection is the application of so called
HALS stabilizers (hindered-amine light stabilizer). These
stabilizers stop the chain reaction and prevent polymers from
further damage. The advantage of HALS stabilizers is the high
efficiency even at low dosage levels.
UV absorbers become effective by filtering the UV part of
The efficiency of the UV absorption depends on the dosage
level and on the thickness of the final product. UV absorbers
are not capable to protect surfaces, only deeper layers of
the product can be protected. The main application for UV
absorbers is the protection of contents of packagings (e.g.
plastic bottles and containers) from UV light.
UV masterbatches are mixtures
based on HALS stabilizers, UV absorbers or a combination of
both additive groups.
UV provides solutions for
most of the common polymers. They are “tailor made”
products which we match with the demands of your application.
We will gladly advice you which UV protection
is suitable for your application.