Helioscreen has a clear mission:
through ongoing research and product development, to make and supply
high-quality products that improve quality of life and work, and where
service to the customer is a key feature. An art that Helioscreen
understands better than anyone else.
Because the quality in the weaving process for Screen fabric is only
one link in the Quality Chain: later on, the fabric will have to be
cut to size, welded, finished, assembled into a roller blind and put
onto a window and made to work. The quality of the end-product - the
installed blind - will be judged by the end-user only, and every link
in the manufacturing and assembly chain will have to be perfectly
controlled to make sure that the quality in one stage of the manufacturing
process does not get lost somewhere else.
The outstanding quality of the ultra-modern Dornier weaving machines
in which Helioscreen continuously invests, as well as the high standard
of the yarn manufacturing process of Helioscreen's supplier, Chavanoz
Industry, have led to the production of fabrics of a superb quality,
recognised all over the world. This has contributed greatly to the
growing use of these fabrics, based on the Screenglass yarn, for the
application in solar protection techniques.
Weaving of glass yarns remains a complex and difficult task, which
with the help of the latest developments in the beaming and weaving
processes has been perfected. The customer should be aware, however,
of a few areas that deserve attention, when the application demands
particular care.
Colour variations.
Compared to the sample card: from one batch of yarn to another, a
minor and carefully controlled colour variation may occur.
The sample card, therefore, is not to be considered as an absolute
standard, but rather as a reliable indication. When covers are made
from rolls of fabrics from different batches of yarn, such minor colour
differences may occur.
Helioscreen can always trace any roll of fabric to the batch of yarn
on the basis of the roll number. If the job requires many rolls of
fabric, please order rolls from the same batch of yarn or call Helioscreen
to check whether your inventory of rolls is from the same batch of
yarn. This also applies when large covers are made in two parts, with
a mid-weld, from different rolls.
A shadow-effect.
Often an optical illusion, shadows of light and dark areas may be
experienced by some observers, as a result of the breaking of light
on certain areas of the yarn from which the fabric is woven.
During Storage of the Rolls.
Store the rolls in such a way that no excess weight rests on the fabric.
While the fabric is sturdy and strong, glass does not like to be compressed
and the fabric may be deformed if it is put under continuous local
high pressure.
Therefore, avoid stacking the rolls upon each other for too long or
more than three rolls upon each other. It is best to keep them in
individual carton cylinders or to hang them freely over a metal bar,
but not for too long a period.
Never store the rolls vertically.
During Cover Manufacturing.
Always make sure the covers are cut at perfectly right angles.
Use razor sharp blades or crush-cut knives and avoid splitting the
glass core.
Let the cut-to-size covers rest on a flat surface for some 24 hours
prior to welding and finishing, to relieve cutting tensions.
Stitching is not recommended, it is better to weld the fabric, either
with a high-frequency or a thermal welding machine, especially designed
for this job.
For use on exterior screens, both edges of the covers should be reinforced
with a special tape to be welded on, to strengthen the resistance
against wind and the elements.
Some fabrics have asymmetrical weave patterns and therefore the front
and back do not look the same. This is the case for one of our best-selling
fabrics, Sergé 2165. The covers should then be cut in the same
way from the rolls, e.g. always taking the width of the covers out
of the width of the rolls, and they should always be placed with the
front (or back) in the same direction.
During Storage and Assembly of Covers.
Smoothly roll up the manufactured covers for transport. Avoid putting
too many covers on one roll, to avoid the weight of the roll to press
on the glass core of the fabric.
Never store ready-made and rolled-up covers vertically, always keep
them horizontal.
Never fold covers: the glass yarns do not like being bent; covers
should always be rolled up.
When the cover is assembled to the roller tube, always make sure that
it rolls up smoothly and evenly and never hits the side of the roller
system. Maximum Dimensions.
There are certain limits to the size of a single sunblind. Depending
upon the diameter and material of the roller tube, the type of mechanism,
the size of the headbox, there are limits beyond which the blind will
simply not perform properly and the Screen cover will not behave as
it should.
And then, there are limits mandated by common sense: a roller blind
with a Screen cover will not look nice if it is too big.
As any material, the Screen fabric will not look as it should if too
big a surface is covered by just one cover. It is a textile, after
all, and textile puts its own limits to its use in one piece.
Helioscreen offers free information on the use of its fabrics and
the maximum dimensions of single blinds. Call or mail us if you need
us or if you are in doubt. |
