Vinyl flooring is manufactured using highly sophisticated production
techniques that involve complex processing and precise controls. The
resulting vinyl floor covering is of high quality, durability, and
performance.
From painted wooden floors that could be maintained easily, the 18th
century saw the use of thick pieces of fabric used to keep the floors
clean. Over time, thick fabrics such as canvas and linen were coated
with oil and paint to make it waterproof and easier to maintain.
Oil cloths slowly evolved into linoleum that was manufactured with
linseed oil, cork dust, wood flour, pigment, etc., over canvas. They
were immensely popular from the late 1800s to mid-1900s. By late 1950s,
floor-covering manufacturers tried to replace linoleum with more durable
and resilient material, and as a result vinyl was born. Vinyl
floor-covering is available either as sheets or tiles.
The raw materials that go into the manufacture of vinyl flooring are
polyvinyl chloride resins, pigments, plasticizers, and a backing or
carrier sheet. The backing is of felt or paper made out of wood pulp
along with calcium carbonate.
How Vinyl Sheet Floor-covering Is Made
The resins and plasticizers are mixed together and the resulting mixture
is called plastisol. To the plastisol is added an AZO compound. On
heating this compound, the vinyl foam is produced which has the
consistency of batter. This is usually spread on the backing. The
backing is passed through rollers for an even coat and then heated in an
oven. In the oven, the vinyl foam absorbs the plasticizer and sets into
a gel. The gelled vinyl is then run through the printing press to
create the patterns on the vinyl. A second layer of a mixture of the
plasticizers and vinyl are placed on the gelled sheet and further baked
in an oven at a higher temperature. This is used to create the wear
layer on the vinyl floor-covering sheet. The patterns are protected by
this wear layer. Patterns can take on either a matte finish or a gloss
finish. The gloss finish is brought about by applying a layer of
polyurethane coating using rollers that are controlled to produce layers
of uniform thickness. Sheets of dimensions 12 ft. X 1500 ft. are then
cut according to requirements of the retailers.
How Vinyl Tile Floor-covering Is Made
Vinyl tiles are made using ways that are different from that of the
vinyl sheet. The polyvinyl resins are mixed with plasticizers, pigments,
resins and calcium carbonate. This mixture is heated up to its melting
point and then consolidated to form a compound that has a consistency
similar to that of bread dough. This dough is passed through calendar
rollers where it is pressed into sheets. The sheets are then embossed
with patterns and are thereafter cut into tiles of size 12 in. X 12 in.
Optionally, glue is fixed to the tiles for affixing on the floor. This
glue coating is covered with a paper layer for protection.
Vinyl sheet floor-covering may be 15 or 30 mils thick. The latter is
more rugged. Patterns are printed with the help of a rotary press that
uses a printing process called rotogravure printing. Cheap vinyl
flooring sheets and tiles are available in a variety of attractive
designs and colors. Vinyl flooring is easy to install. They can be
easily cut to reach corners and fit into curves. They may be applied
over existing floors and can be easily cleaned with soap and water. They
need not be waxed and remain glossy for many years. However, vinyl
flooring may have to be replaced periodically.
No comments:
Post a Comment