Injection Moulding
With expertise in plastic injection moulding since 1984, PLASTIL processes a wide range of materials to manufacture your components, weighing from 50 g to 3 kg.
Ensure the reliability of your production with a dedicated partner who manages every stage, from co-design to validation, certified to ISO 14001 and 9001.

Injection-moulded part
Expertise in plastic injection moulding for over 40 years
Since 1984, PLASTIL has been injection-moulding bespoke engineering plastic components : 12 injection moulding machines ranging from 50 to 610 tonnes, an in-house design office, finishing and assembly facilities, catering for both small and large production runs.
Plastic injection moulding is an industrial process that enables the mass production, with a high degree of repeatability, of complex-shaped parts from plastic pellets that are heated and then cooled in a mould.
For PLASTIL, injection moulding began in the 1980s within the family-owned group. Over the years, the business has been built on rigour, close collaboration with our customers and expertise in technical materials. Today, it is operated by PLASTIL LE JOINT BARTHÉLEMY at our factory in Saint-Léger-sous-Cholet.
Our strength lies in a production facility on a human scale, where decisions are made quickly and every project is monitored from the initial sketch right through to delivery.

The plastic injection moulding process, from concept to finished part
A successful injection-moulded part starts with a well-prepared project. We support you at every stage:
1. Feasibility study with our in-house design office: analysis of your drawings and specifications, choice of material, highlighting design aspects requiring optimisation…
2. Design and validation : mould definition, filling simulation (rheology), 3D-printed prototyping…
3. Injection moulding : the material, dried if necessary, is plasticised and then injected under pressure into the mould, held in place, cooled, and then ejected. The parameters are adjusted and monitored to ensure part consistency.
4. Finishing and assembly : deburring, marking, screen printing, ultrasonic welding, insertion of inserts, assembly of sub-assemblies…
5. Inspection, packaging and delivery : inspection in accordance with the agreed inspection plan, inspection using a 3D co-ordinate measuring machine, packaging tailored to your supply chain…
A range of machinery tailored to your production runs
The diversity of our injection moulding machines means we can adapt the machine to the part, rather than the other way round: this guarantees optimised production costs and consistent quality.


A finishing workshop to take the work beyond the raw piece
We supply you with parts ready for use thanks to our finishing workshop :
- Assembly of small sub-assemblies
- Fitting of inserts
- Ultrasonic welding
- Laser marking and screen printing
- Ultrasonic cleaning
- Bagging and specialised packaging
An engineering consultancy at your service
Our team supports you right from the design stage to ensure your project is reliable, reduce lead times and keep costs under control :
- Optimisation of 3D models for injection moulding
- Creation of 2D drawings
- Rheological analysis (mould filling simulation)
- Prototyping / 3D printing
- Turnkey project management


Quality : traceability, reliability, compliance
At PLASTIL, quality is not a constraint; it is part of our culture.
Every raw material, every stage of production and every finished product is subject to rigorous monitoring, to guarantee that your parts are compliant and traceable, from order to delivery.
Our quality department utilises, in particular, a 3D measuring machine to inspect your parts.
Our certifications
- ISO 9001 : quality management
- ISO 14001 : environmental management. PLASTIL LE JOINT BARTHÉLEMY has just been awarded this certification in recognition of its commitment to a more responsible industry.
Injection moulding : Our expertise at your service
TECHNICAL EXPERTISE
Material processing :
- Plastic injection moulding
- Overmoulding
Development & prototyping :
- Models
- Prototypes
- Technical parts
- Mould making
Assembly & integration :
- Component assembly
- Sub-assemblies
- Insert installation
Finishing & treatments :
- Part finishing
- Laser marking
- Screen printing
- Ultrasonic cleaning
- Bagging
- Ultrasonic welding
- Specialised packaging
MATERIALS
Processed materials:
- ABS
- ASA
- PS
- PC
- SAN
- PA 6, 66, glass-fibre reinforced, V0…
- HDPE
- LDPE
- PBT
- PPS
- PP, PP reinforced with talc, glass fibre, V0…
- PU
- TPU
- SEBS
- PVC
OUR CLIENTS' INDUSTRY
We work with a wide range of clients, from small-scale to large-scale production runs, across a variety of sectors.
Our expertise extends to a broad national and international client base. As such, 10 per cent of our turnover comes from exports.
We operate in demanding sectors such as :
- Aeronautics
- Rail
- Construction
- Oil & Gas
- Medical devices
- Electronics
- Electrical engineering
- Agriculture
- Defence
- Automotive