Technologies
DEMGY Group designs and industrializes high-performance plastic and composite parts through fifteen technological expertises brought together under the circular Multiplasturgy® concept. These expertises serve the aerospace, space, defense, automotive and medical industries, for parts exposed to severe mechanical, thermal or chemical loads.
Operating as a one-stop shop, they cover the full life cycle of a part: eco-design, material selection, processing, finishing, assembly and recycling.
The circular Multiplasturgy® concept
The circular Multiplasturgy® concept brings the fifteen technological expertises of DEMGY Group together around a single principle: circulating information and skills across processes to shorten the path from a specification to a production part. Services range from material selection support and co-design through to the manufacture of complete sub-assemblies.
To support weight reduction and lower environmental impact, the circular Multiplasturgy® offer combines eco-design, lower-impact processes (bio-based materials, reduced energy consumption, less waste) and end-of-life recycling.
The fifteen technological expertises of DEMGY Group
The one-stop shop model covers the entire life cycle of a part, from design through to end of life, without multiplying contacts or handing files between suppliers.
- Eco-design
- Additive manufacturing — powder bed (PA11, PEKK), wire deposition (high-performance composites)
- Injection molding — thermoplastics and thermosets
- Micro injection molding — thermoplastics
- High-precision machining — plastic and metal
- Compression and extrusion — fluorinated materials
- Thermoforming
- High-performance composites — thermoplastics and thermosets, autoclave cure
- FLAXCOMP® — flax bio-composite
- Molds
- Painting and chroming
- Selective metallization
- Smart Plastic Products
- Assembly
- Recycling
These expertises are presented below grouped into process families, for ease of navigation.
Injection molding and micro injection molding of engineering polymers
Injection molding covers the production of engineering plastic parts, from high volumes through to precision micro injection molding. DEMGY Group handles insert overmolding, bi-material injection, compression molding, thermoset molding and in-house mold design. These processes address the requirements of medical devices, automotive components and low-volume aerospace parts.
Creation and transformation of composite materials
DEMGY Group processes high-performance composite materials for the most demanding applications, with the proprietary Press&Make process (single-stage net shape forming) and FLAXCOMP® flax composite technology. These processes primarily serve aerospace, space and applications calling for structural weight reduction with no trade-off on mechanical performance.
Thermoforming and fluoropolymer extrusion
Thermoforming shapes engineering sheet under vacuum or pressure, complemented by PCTFE/PTFCE extrusion for the continuous production of bars and semi-finished stock. These processes address series production for the medical industry and for chemically aggressive environments.
Precision machining of plastics and composites
Machining of plastics and composites covers turning, milling and micro-machining on engineering and high-performance polymers (PEEK, polyimides, PEI, PPS, PTFE and fluoropolymers) as well as on metal. These expertises are called on primarily by the aerospace and defense industries for parts held to tight tolerances.
Additive manufacturing: the DEMGY 3D Workshop
The DEMGY 3D Workshop produces plastic and composite parts by additive manufacturing, in carbon-filled PEKK, bio-based PA11 and continuous-fiber composites. Additive manufacturing serves both rapid prototyping and series production of directly functional parts, across all sectors.
Surface finishing and functionalization
Surface finishing and functionalization covers metallization and coating, selective metallization for the aerospace and defense industries, painting, decoration and assembly, laser marking, and Smart Plastic Products and plastronics. These processes add a function — conductivity, appearance, traceability — to an already formed plastic or composite part.
- Metallization & Coating
- Selective metallization — aerospace and defense
- Painting, Decoration & Assembly
- Laser marking for plastic parts
- Smart Plastic Products and Plastronics
How the expertises map to process families
| Process family | Expertises covered | Materials | Typical markets |
|---|---|---|---|
| Injection molding | Injection molding, micro injection molding, molds | Engineering thermoplastics, thermosets, silicone | Medical, automotive, aerospace |
| Composites | High-performance composites (autoclave), FLAXCOMP® | Reinforced thermoplastics and thermosets, flax fiber | Aerospace, space, sports & leisure |
| Thermoforming & extrusion | Thermoforming, compression & extrusion | Engineering sheet, fluorinated materials (PCTFE/PTFCE) | Medical, industry |
| Machining | High-precision machining | Plastic and metal — PEEK, polyimides, fluoropolymers, aluminum, titanium | Aerospace, defense |
| Additive manufacturing | Additive manufacturing | Powder bed (PA11, PEKK), continuous-fiber composite deposition | All sectors — prototyping & series production |
| Surface finishing & functionalization | Painting & chroming, selective metallization, Smart Plastic Products, assembly | Applicable to most polymers and composites | Aerospace, defense, automotive |
| Cross-cutting expertises | Eco-design, recycling | Bio-based materials, recycled and recyclable materials | All sectors |
Eco-design and recycling frame every process: they come in upstream, at material selection and design stage, then downstream at the end of the part's life. This is what makes the circular Multiplasturgy® concept circular.
Technologies by market
Each process family answers to a specific set of sector constraints. The market pages detail the regulatory requirements, materials and processes for each industry.
For comparing the technical characteristics of materials, the DataComp® database consolidates material data for use at design stage.
Feasibility study for any functional part project
A free feasibility study is available for any plastic or composite part project, in any market.
