By extrusion blow-moulding technology we produce hollow-bodies, pots and tubes for different cosmetics
and personal care products, namely shampoos, creams and lotions, hair dyes, cleansing detergents,
deodorizers, sticks, mascaras, bath-foams, eye drops contact lens solutions, foundations, talcum powder,
sun creams, etc. Plastics are winning more and more share in the cosmetics and perfumery sectors and in
the field of personal care, thanks to the higher versatility in the bottle design and to infrangibility. Cosmetics
producers require versatile machinery suitable for the production of excellent aesthetic appearance
containers and able to guarantee durable quality over time. It is precisely thanks to these qualities that many
operators have shown their preference for Plastiblow blow moulding machines, particularly appreciating their
ability to achieve very strict thickness tolerances and very reduced times for colour changes.
Well known throughout the world for their choice of quality technical solutions and for construction accuracy,
the Plastiblow production range features several models with single or double carriage and single or multiple
heads, both for single layer and multi-layer extrusion.
Deep interest involved the new electrically activated Plastiblow machines for the production of containers
destined to the cosmetics field, basically because the absence of hydraulic actuators avoids any
contamination from products and environment and allows using the machine in white rooms with controlled
atmosphere. These blow-moulding machines are the result of a highly trained mechanical project, developed
by Plastiblow since the beginning of the 80’s and marked by the electric translation movement of the mould
carriage, the absence of hydraulic units and by the substitution of hydraulic cylinders with servo-driven
motors. These improvements brought along several advantages: movements evenness, decrease in
productions rejects, lower working costs, lower maintenance costs and reduction in the environmental impact
thanks to the absence of hydraulic fluids and reduction in noise.
PICTURE 1: Plastiblow blow-moulding machines in a white room.
Electric blow-moulding machines are particularly appreciated by those customers who work in the cosmetic
fields and want to produce bottles of small size but excellent finish, very similar to glass. As a matter of fact
Plastiblow achieved brilliant results with multi-cavities machines to process PETG and PET by using
patented heads whose design allows a very good distribution of the flows without stagnation points and the
consequent material burning. A recent application concerns the processing of a shower-gel for L’Oréal
produced with Plastiblow blow-moulding machines with 3+3 cavities.
PICTURE 2: L’Oréal shower-gel bottle made with Plastiblow machines in 3+3 cavities
Multi-layer bottles are required to obtain special characteristics impossible to achieve with one single
material. Some customers, for instance, produce co-extruded bottles with a two-layer structure, named
“deco” or “co-layer” resulting in a container with aesthetic and tactile (soft touch) gorgeous features by using
expensive additives only in a thin external layer .
When the barrier effect is required to avoid perfume or flavour dispersion, or to preserve those products
being exposed to the air and consequently to oxydation, cosmetics bottles have a make-up of up to 6 layers.
PICTURE 3: blow-moulding machine PB2E/D for the production of cosmetic bottles up to 6 layers
Plastiblow have also developed long stroke machines particularly suitable for the cosmetics sector where
high productivity is required, for instance up to a million pieces per year. Thanks to their technological
solutions it is now possible to reach an output that earlier could only be obtained by rotary machines, with the
advantage of producing a calibrated neck bottle completely finished in the machine
PICTURE 4: Plastiblow electric machine PB5E/DXL for the production of multy-layer cosmetic bottles.
PICTURE 5: L’Oréal shampoo bottle with deco-layer produced with a 12-cavities Plastiblow machine.
For packaging needs Plastiblow study ad-hoc solutions on the basis of the customer needs. Combining
bottles handling by conveyors, manipulators with rotary movement or on Cartesian axes, etc, all controlled
by personalized logics through microprocessors or plc.
Finally, for the quality control of the bottles Plastiblow can offer several in-machine devices: tester for
tightness, neck obstructions and axial collapsing, in-line weighing, scraps control devices, visual checking by
digital cameras.
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