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on plastic film or moulded part surface under the screen by applying an ink which
has a paint-like consistency to the screen. The ink is forced through the fine mesh
openings with a rubber squeegee. Screen printing is very versatile as it provides
printing on 360 degrees around a cylindrical shape, oval surfaces and flat surfaces
in one application from a small lipstick and nail polish container to large pail.
5. Water Transfer printing: Hydrographic printing, 3D printing, fluid imaging,
immersion printing, or simply water transfer printing, whatever the name, the
processes are the same. Water transfer is a process for decorating three-
dimensional products, by applying an ink pattern to a water-soluble role of film. The
pattern is released on the surface of a tank of water, with the ink side up. The part is
dipped into the water and the pattern is transferred to the part. The part is removed
from the water and the remains of the film are rinsed off the part. Process transfers
high-definition 4-color graphic patterns to many complex three-dimensional
shapes, with curved surfaces and round corners, such as car interior parts,
computer housings, telephones to steel, aluminum, plastic, wood, and many other
substrates.
6. Appliqué and Labels: is a process where a printed, self adhesive label is
applied to the finished molded part. This method typically relies on the screen-
printing process and typically used in the appliance and automotive industries. It is
inexpensive and very easy to use but the label can be peeled off very easily.
Additionally, the applied label will not look like part of the molded product and will
exhibit “witness” lines where the label ends and the molded part begins. Labels and
other forms of appliqués are widely used for hollow parts as they are well suited to
large semi-rigid parts
7. Heat (Hot) Transfers: Heat transferring is a dry printing process like hot
stamping where a pre printed graphic image transfer film is trapped between a
heated plate and the part. Heat and pressure is applied to the part and the graphic is
then permanently bonded to the part. Although this process has advantages of
multi-color graphics that can be applied to a part in one pass, it is usually only cost
effective in higher volume applications because of the cost associated with setting
up and screening the transfers.
8. Pressure Sensitive Labelling: Transferring a pre decorative pressure sensitive
material or film which gets transferred on to the product surface on pressure
application (no heat applied)
9. Laser Marking (etching): Laser marking is the most flexible way of marking
plastics and yields legible and sharp images. Lasers can mark products with various
geometries in a fully computer-controlled process with high reproducibility and
reliability. With laser marking there is no direct contact with the plastic other than
through the laser beam producing a permanent mark into the surface of a part.
Laser Annealing is process of producing a color or pigment change to the surface of
the part without removing any material.
Laser Engraving removes surface material producing a mark visible through light
refraction and reflection.
It is ideal for products requiring intricate decorative work however, it is a slow
process and not recommended for high volume applications.

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