Rotational Moulding
Customized products with the highest quality standards and short and punctual delivery times.
Rotational moulding is a working process that applies to thermoplastic materials to obtain hollow-shaped items, of any shape and size, without tensions and stress.
Rotational moulding stands out from other processes, such as the injection one or the blow one, because it allows the production of complex and large-sized hollow articles, without limits of colour thicknesses and without requesting following welding and mounting interventions. That is why the rotational moulding technology proves to be particularly suitable for the production area of vases and containers, even in very complex shapes.
Telcom has invested in rotational moulding by equipping itself with the most cutting-edge machineries present on the market and by making available for its customers this technology.
30 years of experience
Leader in the sector of thermoplastic material transformation, Telcom is able to monitor the whole production chain of manufactures through rotational moulding creating, on behalf of third parties, a customized product with the highest quality standards and precise delivery times.
Here are the main advantages:
- Possibility of creating hollow manufactures of any shape and size made in a single piece without lines of welding or joints, without tensions or stress resulting from the process
- Piece essentially free from joints
- Possibility of moulding manufactures of different colour without limits of quantity
- Moulds at relatively low costs
- Short time of manufacturing
- Uniformity of panels thickness
- Possibility of varying the distribution of panels thickness in a controlled manner, without the need of modifying the mould
- Economic accessibility of the production in case of limited editions
- Absence of scrap because the whole quantity of raw material introduced into the mould is worn out to produce the piece
- Possibility of producing multilayer pieces, with different zones and thickness in various colours without restrictions of quantity
- Possibility of moulding products of different size and shape on one machine at the same time.
- Possibility of moulding metal inserts inside the thickness of the piece
- Possibility of moulding high quality graphic on the finished piece, as logos, instructions, etc…
- Possibility of realizing threads of several sizes on the manufacture to be used for many purposes (Fastening to structures, hydraulic connections, floaters and/or level indicators, mounting of various accessories…)
Telcom on-site production plant
9 technologically advanced plants of different sizes, for manufactures from the volume of 10 liters to 50.000 liters
The procedure
Powder material is introduced into the mould and it is made to rotate simultaneously on two perpendicular axes thanks to a mechanical arm in order to cover every interior surface of it during the fusion of the polymer.
The raw material in powder (generally linear polyethylene) during the first phase of warming, creates a foil on the interior surface whom the rest of the material, become gradually fluid, adhere to. Right after, the phase of warming will allow the manufacture to become monolithic, solid and resistant.
The cycle is completely automated: operations of loading/unloading remain responsibility of labor ensuring a 100% quality control on the rotomolded piece.
The moulds
For the realization of the mould, different types of metals are used.
For the production of small or medium moulds for complex shape or artistic articles, aluminium casting is done, instead for greater measure articles or simple shapes plates of sheet steel are used, modelled by the expert hands of sheet metal workers
The applications
Rotational moulding technology is in constant development and the application fields increase, with higher number of articles that can be producted by exploiting technology and appropriate machineries.
Telcom, with rotational moulding, has found applications in the production of containers for the storage of food liquids, containers for chemical products, for the collection and eventual treatment of water, but furnishing elements for outdoor spaces, garden, home, office, hobby and complex technical applications also.
Some examples already designed and produced by TELCOM:
Tanks
- Septic tanks
- Diesel cisterns
- Purification and water treatment tanks
- Tanks for chemical substances storage
- Transport tanks
- Emergency reserves cisterns
Materials handling
- Pallets
- Containers for separate collection of waste
- Boxes for fish transport
- Packaging
Containers for food products
- Cisterns, basins and tanks for food industry
- Containers for processing of citrus fruit, olives and fruit
- Double-walled isothermal containers for prepared food
- Containers for oil and wine
Furnishing accessories
- artistic or modern vases of different shapes and sizes
- statues
- chairs, counters, tables and coffee tables
- fittings for bars and bathing establishments
- Bar counters equipped for events and catering
Other examples of possible applications:
Miscellaneous, transportation and signage
- Elbow rests
- Housing units for audio equipment
- Instrumentation panels
- Pipes
- Supermarket shopping carts
- Seats body shells
- Tanks for water and health plants of caravans and campers
- Trunks and trailers
- Deflectors, air inlets, mudguards and frontals of industrial vehicles
- Body parts of derivates, campers, ambulance, etc.
- Bodyworks of motorcycle, bobsleigh, sidecars, etc.
- Platforms for aerial work for stair cars
- Various elements for signage and road safety, guardrails, SOS stations
Containers
- Reusable containers for shipments
- Containers for liquids transport or bulk material
- Barrels
- Refrigerated containers
Toys and advertising items
- Rocking horses, toy cars, toy house
- Slides and large-size toys for communities
- Various elements for roundabouts
- Mannequins and other advertising articles
Medical products
- First-aid kits
- Stretchers
- Medical samples kits
Components for agriculture machines and plants
- Tanks for fuels and lubricants, hoods, dashboard, bodyworks, mudguards
- Feeders, feed distributors, silos, boxes for irrigation and planned feed, ducting and derivations
Sources of energy, recoveries and services for the community
- Insulated bins for solar panels
- Bins for urban wastes
- Containers for industrial residues
- Special containers for firefighting service
- Various elements for street furniture
Installations and industrial services
- Dispensers for water treatment
- Basins for surface treatment and various processing
- Ducting and flanged connections
- Insulated elements for soundproofing of plants and machines
Nautical and ports
- Rowing and outboard motor boats
- Canoes, driftwoods, fenders
- Multiple life preservers and containers for rescue rafts
- Piers, floating collars, rafts
- Modular elements for bathing boxes