|  We
have been producing Destination
Blinds and Route
Numbers for the Passenger Transport Industry for
over 25 years and are specialists in the techniques needed to do
this.
McKenna
Brothers provide the Passenger Transport Industry with a quality
Destination and Route Number Blind service which is second to none.
We have built our reputation on quality of product and reliability
of delivery and, are confident that this claim would be confirmed
should reference be made to any of our many customers.
We
have always been at the forefront of our industry introducing new
concepts such as computer technology in the production of artwork
and dayglo yellow destination blinds. However we can produce any
colour specified.
All
production is carried out "In House" giving absolute control
over the standard of quality both we and our customers expect and
demand.
The
introduction of computer aided technology has enabled us to streamline
production techniques and pursue an expansion programme within the
company, allowing us to offer the customer a wider product base,
including our new Smartblind
signs which use our printed blind technology.
 At
McKenna Brothers we are always striving to give our customers the
best possible product. In 1996 we produced and tested many types
of fluorescent yellow coatings for use on Destination Blinds. Our
aim was to prolong the life expectancy of fluorescent yellow.
It
is well proven that traditional Destination Blinds printed with
fluorescent yellow text on a black background is the most effective
legible medium. However fluorescent yellow will over a period of
time fade to white. To understand why fluorescent is prone to fading
we must understand how it is constructed. Fluorescent pigments consist
of a fluorescent agent locked in a transparent resin matrix which
can be added to a variety of mediums, such as plastics, paints,
aqueous coatings, etc. the final effect is a coloured surface which
is bright and many people will actually say that it glows, however
there is a down side to this glowing effect which is light fastness.
 When
a fluorescent surface is exposed to normal daylight it reflects
light in the visible spectrum (400-700nm), the wavelength at which
it reflects the most light determines the colour we see (the 500nm
region is yellow). In addition to this normal reflection the fluorescent
surface also converts some of the UV (200-400nm) light which we
cannot see normally and reflects it at a higher wavelength in the
visible spectrum, it is this extra light that gives the bright or
glowing appearance.
All
coloured surfaces fade when exposed to daylight, this fading is
also caused by the UV wavelengths. The UV light breaks down the
chemical bonds within the pigments themselves and eventually make
any coloured surface white or transparent. Different types of pigments
can withstand this attack to varying degrees and fluorescent has
the lowest tolerance and therefore fade the quickest.
McKenna
Brothers are proud to announce that they have succeeded in developing
a new fluorescent coating called McKENNAGLO that effectively resists
this chemical breakdown. Therefore during the normal life of a Destination
Blind McKENNAGLO will stay yellow and not fade to white.
McKENNAGLO
on TYVEK and POLYESTER is exclusive to McKenna Brothers. |
