Plastisols Market
Plastisol
is a suspension of polyvinyl chloride (PVC) or other polymer particles in a
liquid plasticizer; it flows as a liquid and can be poured into a heated mold.
Plastisol inks are not water-soluble. The ink is composed of PVC particles
suspended in a plasticizing emulsion, and will not dry if left in the screen
for extended periods. Garments don't need to be washed after printing.
Plastisol inks are recommended for printing on colored fabric. On lighter fabric,
plastisol is extremely opaque and can retain a bright image for many years with
proper care. Plastisol inks will not dry, but must be cured. Curing can be done
with a flash dryer, or any oven. Most plastisols need to reach a temperature of
about 180 degrees Celsius (350 Fahrenheit) for full curing. Plastisol tends to
sit atop the fabric instead of soaking into the fibers, giving the print a
raised, plasticized texture. Other inks can produce a softer feel. It is also
used for high density (HD) prints. In this process, a multiple coats of ink are
applied, with a curing step between each coat. Plastisol is used for slush
molding or slush casting, a form of spin casting that is more complex than
simple resin casting, but less expensive and less sophisticated than the
injection molding used for most plastic products. It involves metal molds that
are filled with liquid plastisol. When the open mold cavities are filled, the
mold is spun on a high speed centrifuge to force the liquid vinyl into the fine
details on the interior of the mold.
Plastisols
are dispersions of homopolymers and vinyl acetate copolymers of vinyl chloride
in conventional polyvinyl chloride plasticizers. Plastisols are also composed
of pigments, fillers, thixotropic agents, blowing agents, stabilizers, etc. The
plastisols
market can be segmented based on application, processing technique,
end-use industry, and region. Based on application, the plastisols market can
be divided into coating, sealants, printing ink, slush molding, and others.
Plastisols are used to coat cable insulation, gloves, shoes, boots, tool
handles, dishwasher racks, dish drainer baskets, and napkin holders. In terms
of processing technique, the plastisols market can be segregated into dipping,
spread coating, screen printing, casting, and spraying. Based on end-use
industry, the plastisols market can be split into construction, textile,
automotive, toys, and others. The coating application segment dominated the
global market for plastisols in 2016. This trend is expected to continue during
the forecast period. Application of plastisols as coatings, especially on
pre-primed metal components, requires excellent adhesion of plastisols to the
material onto which they are coated. Poor adhesion impacts the efficacy of
protective coating.
A
processing technique is used to coat plastisols onto the surface of different
materials based on the application. Dipping consists of dipping the substrate
into a bath of the plastisol paste. There are two types of dipping methods: hot
dipping and cold dipping. The hot dipping process includes a substrate that is
supposed to be coated. It heated at a high temperature and dipped in a bath of
plastisol for a specific period of time. In order to control the heat, cooling
coils are used in the plastisol bath. Cold dipping is used when the substrate
to be coated cannot be preheated. Under this process, the substrate is dipped
in a plastisol bath, which consists of a plastisol paste that is adjusted to
control the weight of plastisol and coating thickness. The formulation of
plastisol depends upon the materials that build the yield of plastisol. Once
the substrate goes through the dipping process, it is removed from the
plastisol bath and sent for heat fusion process in an oven. This is followed by
cooling the substrate at ambient temperature. Spread coating technique requires
roller and knife coaters to coat fabric, paper, and steel. Important factors in
this process determining the efficacy of the end product include compound
viscosity characteristics, speed of coating, clearance between the web and the
knife or roll, and type and angle of the knife. Plastisols can also be sprayed
onto the surface of target product using pressure and suction guns.
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Construction
and textile dominate the market in terms of end-industries using plastisols.
Plastisols for printing ink for textile should have properties such as stable
viscosity, pigmentation, long shelf-life, and over-printable. Over-printability
characteristic enables the printer to print continuously without stopping to
clean the screen to avoid offsetting of ink. Plastisols are used as sealants in
the paint shop area of the body assembly line in the automotive industry.
Plastisols adhere to primed metal surfaces, which are then painted over to make
metal surfaces more durable. The construction segment is anticipated to expand
at a faster pace compared to other segments of the plastisols market.
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In terms
of demand, the plastisols market in Asia Pacific and Middle East & Africa
is estimated to expand at a faster pace during the forecast period. Countries
such as China, India, the UAE, and Saudi Arabia are among the major countries
in Asia Pacific and Middle East to witness high growth for the plastisols
market. Growth in the construction industry is projected to drive the
plastisols market in Asia Pacific. Major companies operating in the global
plastisols market include Fujifilm Corporation, KOBAYASHI & CO., LTD.,
PolyOne Corporation, PolySol LLC, Polyblend, Triangle Ink, International
Coatings Company, and Plastic Coating Corporation.
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