IMPREGNATION
TREATMENT AND COATING OF WOOD IN AUTOCLAVES USING THE DOUBLE VACUUM
SYSTEM
People love and appreciate living and working in environments with
wood finishing and panelling, they value its warmth and the unique
incomparable natural beauty no other material of mineral or synthetic
origin has
These qualities are however penalised by a single factor: durability..
As atmospheric and biological agents such as fungi,
insects and bacteria attack wood more or less rapidly, the preference
has fallen on selecting and using "naturally" resistant
wood. The continual demand for these species has considerably reduced
its availability and increased the price..
This has led to the need to use less long lasting but much more
inexpensive wood, but however applying effective treatment to increase
its natural resistance.
Right from the beginning of the last century the first applications
of preservative products were attempted using autoclaves and the
results were very encouraging.
Today I.S.V.E. Srl, aware of the results that can be reached using
this technique, has applied the most recent technology to develop
a treatment autoclave that enhances the use of the most modern industrial
chemical products for preserving wood.
To preserve and treat does not however mean to destroy the natural
characteristics of the wood: the possibility of using water-based
impregnants and atomisation of the product in a hermetically closed
autoclave means total respect for the environment.
Conservation and respect for the environment are the objectives
of the I.S.V.E. Srl. IMP-PG SERIES OF VACUUM IMPREGNATORS.
It is used for the vacuum impregnation of windows-frames,
shutters, doors, as well as loose elements, by using a
large range of preservatives for the protection against fungoses
and insects, to dye and paint first and finishing coats.
The pieces to treat are hanged to a movable frame and put into the
autoclave, which after having been hermetically closed, performs
the process by an automatic sequence consisting in:
a phase of initial vacuum to take away the air from the wood
vessels,
a further phase for the letting in of the preservative which
is nebulized through the nozzles properly placed inside the autoclave
in order that the woodworks are completely treated,
final phase of re-setting at the atmospherique pressure.
The process may be set in order to obtain a more or less impregnation
depth according to the quality requirements.
Generally it is possible to perform 2/3 cycles per hour.
By this plant it is necessary to immobilize very slight preservative
(60-70 litres).
The use of the vacuum impregnation allows:
a real penetration in depth of the preservative into the wookworks,
especially in the head areas of the timber and into the holes
or cavaties where it is more necessary the protection.
a best fastening of the products over the wooden surface.
no noxious pollution.
no evaporation of the solvents which compose the preservatives.
sensible savings of the preservatives and paints.
I.S.V.E.
Via San Martino, 39 25020 Borgo Poncarale(BS) - ITALY - Tel.: +39-030-2540.351
r.a. Fax:+39-030-2640.874