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Vol
1 # 5 |
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12
March 2010 |
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In
the first three parts
we featured the most
important raw material
for the manufacture
of woodwool board -
woodfibres, magnesite
cement and salt. Now
we are ready to make
woodwool board as it
were!
Anutone’s
Excel research engineering
achieved a significant
technology breakthrough
in the latter part
of the last decade
for the manufacture
of woodwool boards
- Duolay Matrix! For
Strand Plus and Strand,
above 20mm thickness,
Anutone’s Ekcel
now deploys the Duolay
Matrix technology.
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| What
is Duolay Matrix? |
Hitherto,
woodwool boards were
made with a single matrix
of fine fibres for Strand
Plus, medium fibres
for Strand and coarse
for Strandec. Duolay
Matrix means Strand
Plus and Strand now
come with a perfect
blend of fine or medium
fibres on the top and
a coarse fibre base. |
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| How
do customers gain from
Duolay Matrix? |
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Improved
strength - Coarse fibres
at the bottom form a
stronger base for the
fine or medium fibres
on the top
Cost
savings - fine and medium
fibres are more expensive,
coarse fibres are less.
Duolay Matrix ensures
an optimal blend.
Variable
acoustics - soundwaves
encounter a variable
impedance due to the
dual geometry of fibre
matrix. |
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EN
13168 is the global
standard on factory-made
woodwool boards and
consists of many standards
that govern its clauses.
Anutone’s Ekcel
Lab has the complete
set of such standards
for its own working
and reference by others.
The fourth in the series
is:
EN
825 – Determination
of flatness
This standard specifies
the equipment and procedures
for determining the
deviation from flatness
of full-size products.
The
principle is the maximum
distance between the
product placed on a
flat surface and the
flat surface is measured
in which the product
is placed with the convex
side uppermost. The
apparatus includes a
flat surface, metal
rule or tape graduated
in 0.5mm and a rigid
frame with a movable
measuring device consisting
of a disc with a diameter
of 30mm fixed to a graduated
pin or dial gauge applying
a load.
The
test specimen is a full-size
product conditioned
to 23oC and 50RH for
6 hours. It is laid
on the flat surface
with convex surface,
if any, uppermost. It
is measured for deviation
from flatness.
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Let
me know what you feel about ‘eboard’?
We welcome your views to enable us to
provide you with news about magnesite
boards that you need most.
NS Praveen,
Senior Manager – Ekcel
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3A
Visvesvaraya Industrial Area,
Bengaluru 560 048, India
Phone +9180 2852 4038
Fax +9180 2852 4177 |
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Anutone Acoustics Limited – 231, 7th Cross, Indiranagar
1st Stage, Bengaluru 560 038, India Phone +9180 2520 3114, Fax
+9180 2520 3115, info@anutone.com
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