BMC Moulding Manufacturer in Europe

DASYC has produced BMC (bulk molding compound, also bulk moulding compound) thermoset parts in Greece since 2007. We run a dedicated BMC department with KraussMaffei PolySet injection moulding machines and automated Rösler de-flashing, producing heat-resistant, flame-retardant and dimensionally stable parts for electrical, automotive and appliance customers across Europe. We are the only dedicated BMC moulder in Greece and one of few in South-East Europe.

What is BMC?

BMC is a thermoset compound made of unsaturated polyester (UP) resin, mineral fillers and short glass fibres. Unlike a thermoplastic, it cures permanently in a hot mould and does not melt again. That gives BMC parts properties that most thermoplastics cannot match:

• High heat resistance and very low creep under load
• Excellent electrical insulation and tracking resistance
• Inherent flame retardancy (halogen-free grades available)
• Tight tolerances and low shrinkage, close to metal
• Good chemical and corrosion resistance
• A cost-effective substitute for metal, ceramics and thermoplastics in demanding parts

Our BMC moulding process

We use injection BMC moulding, also called thermoset injection molding (moulding). The compound is fed by a stuffer into the injection unit, injected into a heated mould and cured in the cavity. Compared with compression moulding, injection BMC gives shorter cycles, tighter tolerances, less manual work and better repeatability for series production.

1. Material preparation and automated stuffer feeding
2. Injection into a heated steel mould
3. Curing in the mould
4. Automatic part removal
5. Automated de-flashing on our Rösler line
6. Inspection, post-machining or assembly where needed, and packing

BMC equipment

• KraussMaffei KM-CX 300-1400 PolySet, 300 t clamping force, installed July 2012
• Two further KraussMaffei PolySet machines, commissioned 2010 and 2011
• Rösler automatic de-flashing, integrated with the moulding line
• In-house toolshop for design and maintenance of BMC moulds

Together these form Greece’s first fully operational, semi-automated BMC production line, serving demanding electrical and automotive applications across Europe.

Applications

• Electrical & electronics: switchgear and fuse components, circuit-breaker parts, terminal blocks, insulators, coil bodies, motor and electronics housings
• Automotive lighting: headlamp reflectors and LED lighting components, ready for metallization
• Automotive under-the-hood: heat-resistant components for trucks and passenger cars
• Domestic appliances: iron heat shields, coffee machine parts, pump and motor housings as metal substitution, handles
• Transport and engineering: track switch components, functional parts replacing metal
• Medical: surgical and dental equipment components

Why choose DASYC as your BMC moulding partner

• BMC moulding experience since 2007, in an EU plant
• Injection BMC with automated de-flashing for consistent, clean parts
• OOne supplier for BMC, thermoplastics, insert overmoulding, composites and assembly
• In-house tool design and mould maintenance
• Engineering support from DFM to series production
• Shorter supply chains and lower risk than sourcing from Asia

Frequently asked questions

What is the difference between BMC and SMC? Both are glass-fibre reinforced polyester thermosets. BMC is a dough-like compound with short fibres, ideal for injection moulding of complex, detailed parts. SMC is a sheet with longer fibres, mainly compression moulded into larger, flatter parts. Can BMC replace metal? Yes, in many parts. BMC offers similar dimensional stability and heat resistance at lower weight and cost, with built-in electrical insulation and no corrosion. Can you take over an existing BMC mould? Yes. We review the mould and can transfer it into production, or design a new mould in our toolshop.

Looking for a reliable European BMC moulder?

Send us your drawing or 3D model, material requirements and annual volume, and we will reply with a DFM review and quotation. Request a BMC quote →