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Engineering thermoplastic
structural components and design: the winning
couple in the furniture solutions
Performance gap between engineering compounds
and metal alloys has also been narrowing during
the last decade thanks to the continuous research
and development progress in the field of reinforced
polymers and related process technologies.
Advanced plastics are daily job for Lati, one
of the most important independent European Compounders
and the here EFFEGI Brevetti project
development testifies how fruitful can be a
tight partnership between 60 years experienced
material experts and smart designers, skilled
in the field of top notch furniture engineering.
A sophisticated hinge system moving the vertical
opening doors of hanging wall units dedicated
to high-end kitchens: a clear concept describing
a rather complicate device, obtained by the mean
of an extended engineering and design procedure.
The whole system is composed by different parts:
- The first plate onto which all components
are mounted
- A multiple leverage system whose movement
is smoother thanks to a braking gas piston
- A second plate keeping in place all the
parts
- A safety cover enclosing the hinge system
- A third plate constrained to the moving
door via the leverages
The target focused on EFFEGI was to
replace zamak alloys to cut weight and cost
of metal components, introducing top mechanical
performance and outstanding surface finish:
two mandatory requirements that can hardly be
satisfied at the same time because of the poor
aesthetics deriving from glass fibres, often
blooming on the surface of reinforced compounds.
A definitive solution has been found in the
LATIGLOSS compounds whose formulation
provides:
- top mechanical properties thanks to the
presence of 50 and 60% glass fibres, a reinforcement
chosen for specific structural use

- perfect surface finish, featuring glossy
and homogeneous aspect. The proprietary matrix
formulation provides shiny and bright colours,
free of all typical defects due to the high
amount of glass or carbon fibres
- excellent dimensional stability, even in
case of problematic geometries as plates or
not stiffened flat surfaces similar to the
here discussed part.
LATIGLOSS
66 is based on polyamide 66 and for this reason
processing conditions are much more friendly
for moulding machine and equipment because lower
pressures and temperatures are required to transform
the raw material. It is evident how lower processing
and manufacturing induced costs lead to a more
competitive marketing price for the finished
products.
All over the 3D geometry adequately positioned
and dimensioned ribs have thus been distributed,
wall thicknesses have been revised trying to
exploit the benefits deriving from strong fibre
orientation along useful directions. Simulation
results confirmed how process requirements of
LATIGLOSS materials are similar to those
of ordinary glass reinforced polyamide 66 compounds
featuring a considerable amount of fibers. Also
outstanding surface finish can be obtained by
regular mould temperature, i.e. 80-90°C.
The calculation showed an easy and complete
feasibility of the plate without falling into
issues due to remarkable viscosity of the melt
polymer and following high melt temperatures
needed to fill the cavity, as may occur when
PPA and other aromatic polyamides are transformed.
As the first metal replacement attempt was successfully
accomplished, EFFEGI quickly decided
to export this winning solution to all the other
part of the whole hinge system and metal to
plastics conversion is almost total today.
The superb aesthetic aspect of the molded parts
and overall outstanding mechanical performance
allow EFFEGI to implement the LATIGLOSS
compounds into both structural parts and covers,
without loosing appeal or reliability with their
Customers whose expectations can never be let
down.
Global chemical and thermal performance of LATIGLOSS
products push parts performance far beyond the
limits imposed by working conditions and life
expectancy...
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| Contact: |
email: marketing@it.lati.com
LATI Industria Termoplastici S.p.A.
Via F. Baracca, 7 21040
Vedano Olona (VA) - Italy
Tel. : +390332409111 - Fax: +390332409307 |
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