DAPc
®
Medium porcelain stoneware
GRESPANIA
4
This document contains
12
pages.
Partial reproduction is prohibited
The presses are hydraulic, fully automated and electronically controlled.
The clay
is poured into moulds using a feeder carriage, which first removes the tiles from
the previous run.
These tiles are transferred to a collecting belt on which they are
carried to the vertical driers, where their residual moisture is removed.
The different components of the glazes, such as frits,
colours and additives, are
loaded together with
water into mills with
grinding fillers.
Once they have been
ground,
the
glaze
is
poured
into
vats
with
stirrers
to
prevent
the
different
components
from
precipitating,
from
where
they
are
pumped
or
transported to
the glazing line.
The glazing line is equipped with systems for transporting the tiles.
The different
glazes
used for each model are applied as a
water-based
suspension in each of
the devices (disks, bell glazing units, spray guns) positioned along the line.
Once
the
tiles have
been
glazed
and
decorated,
they are collected
by a loading
machine
that
stacks
them
on
racks
in
an
intermediate
storage
area
ready
for
firing in the kilns.
The
kilns
are single layer
type.
The tiles pass
through
them
on
rollers
that
are
resistant
to high temperatures.
Once the tiles have been fired, they are
stacked
on AGVs and taken to the sorting area.
Before entering the
sorting lines, the tiles
can be
rectified and/or polished.
This
section for polishing, cutting and rectifying the tiles makes it possible to process a
part
of
the
production in
order
to
obtain
tiles with an
exceptional surface
gloss
(when polished), smaller tiles made from larger sections (when cut), and/or tiles
with an extraordinary dimensional precision, also making it possible to eliminate
the typical rounded edges found on tiles (when rectifying).
There is also a cutting section, whose work focuses on obtaining extremely small
formats from larger tiles.
Once
on the sorting
lines,
whether
the
tiles have
passed
through
the
rectifying
and polishing section or not, the AGVs are unloaded again and the tiles placed on
a belt where they undergo a visual inspection and are marked according to their
qualities, then separated onto the corresponding output lines.
On the line, there is
a
device
for
measuring
the
flatness
of
the
tiles
and
a
calliper
to
measure
the
squareness
of
the
tiles.
Finally,
there
is
an
automatic
packaging
system
and
robotic palletising system.
The sorted tiles are packed in cardboard packaging.
The number of tiles in each
box
will
vary
depending
on
their
format
and
weight.
The
different
cardboard
boxes are stacked on wooden pallets, which are then covered with LDPE shrink or
heat
shrink
film,
which
adapts
to
the
size
of
the
pallets.
Once
the
pallet
is
complete, it is stored in the corresponding area.
