have a reflection rating that always exceeds 92%. This is
one of the fundamental features inherent in the quality of
The copper coating
in conventional mirrors can be oxidised by chemical reactions
through the paint (especially polymerisation agents in the
adhesives used to fix mirrors in place).
When the copper coating has oxidised completely, the copper
oxide (which is brownish in colour) diffuses through the silver
coating and reaches the point where the glass and silver meet,
causing brownish stains. This defect, which is called cloud,
appears on most conventional mirrors with a layer of copper.
However, it does not appear with Broco mirror products.
most violent chemical attacks with a 50% reduction in black
edge creep, makes Broco Mirror a quality choice for fully
framed bathroom mirrors. Black edges and spots are the sure
signs that the mirror is starting to deteriorate. Broco Mirror
has no copper coating usually associated with conventional
dual coat mirror production. Conventional mirror production
contains a metalic copper coating to protect the silver coating.
Upon damage to the copper coating through mechanical abrasion
or chemical attack and subsequent exposure to the atmosphere,
a reaction takes place which produces 'black spot' or 'edge
is manufactured according to a special patented process. They
have the following features:
- no copper
- two coats
of lead free protective paint (<0.2% in weight wet paint).
- Generally speaking, mirror production couses a major concentration
of ammonia in the effluent from the silvering line. Approximately
90% of this ammonia result from the copper platting proceedure.Copper
free mirror help processors to respect the environment too,
since effluent from shaping and edging operations is totally
free of copper.
- Given the growth and increased stringency of both national
and international environment standards, the innovation of
lead free paint offers the consumer the choice of more environmentally
friendly product. This makes Broco Mirror an excellent alternative
for health sensitive environment such as the home, child care
centres, schools, hospital etc.