Processus Group FR Download our brochure

FAQ · contract manufacturingFrequently asked
questions.

37 answers to the questions our customers ask most often, from idea to production.

Working with us

How do I send you my project?

Through the contact form or by phone. Describe the part or product, the expected volumes and your timeline; if possible, attach a specification and your drawings. A specification template is available for download.

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What documents should I provide to get a quote?

Ideally: dimensioned 2D drawings and the 3D model (STEP or IGES, or the native format of your CAD software), the desired material, annual volumes, cosmetic and tolerance requirements, and the standards that apply in your industry. If you are starting from an idea, a description and a few sketches are enough to get going with our engineering office.

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Will my project remain confidential?

Yes. The information and files you send us are used only to study your project. We sign a non-disclosure agreement on request, before any drawings are exchanged.

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Do I have to entrust you with the whole project?

No. You can entrust us with one specific step (design, prototype, mold, molding, machining, assembly) or the entire process. Either way, you keep a single point of contact from prototype to production.

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Do you handle low-volume production?

Yes. Our projects range from a few dozen parts a year to more than a million. The process (3D printing, resin mold, machining or production molding) is chosen according to volumes and product life.

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Product development

What are the steps to develop an industrial product?

Developing an industrial product generally involves defining the need, writing the specification, design, prototyping, technical validation, industrialization and series production. Processus Group can handle the whole process or only some of the steps.

See the ten-step process Link to this question
Can Processus Group support a project from the initial idea?

Yes. The group’s engineering office, Origin 3D, steps in from the earliest stages to define the need, the technical constraints, and the most suitable materials and manufacturing processes.

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Which CAD software does your engineering office use?

Origin 3D works with the main CAD packages on the market: CATIA, SOLIDWORKS, NX and Inventor. We can therefore work from your native files or deliver ours in the format you need.

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What is the difference between prototyping and industrialization?

Prototyping validates a concept, a function or a design before production. Industrialization prepares series production by optimizing processes, tooling, costs and quality.

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What kinds of prototypes can you make?

Depending on the project’s goals: appearance, functional or mechanical prototypes, 3D-printed parts, pre-series, or prototype molds for molding trials in the production material.

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Why design a part with manufacturing in mind?

Because most of a part’s cost is locked in at the design stage: wall thicknesses, draft angles, undercuts and tolerances determine mold complexity, cycle time and scrap rate. Involving the engineering office and the shop floor from the start avoids costly tooling changes later.

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Plastic injection molding

When should I choose injection molding?

Injection molding is particularly suited to recurring or high production volumes. The mold is an upfront investment, then amortized over precise, repeatable parts that remain competitive over the long term.

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What press capacities do you have?

Our presses range from 35 to 450 metric tons, single-shot and two-shot, with insert overmolding. A 450-metric-ton press is equipped with a camera-based part inspection cell.

Read the article on camera inspection Link to this question
What is two-shot molding?

Two-shot (or two-material) molding injects two materials, or two colors, into the same mold in a single cycle: for example a rigid part and a soft part. It eliminates an assembly step and ensures a durable bond between the two materials.

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What is overmolding?

Overmolding places a component, often a metal insert, in the mold before plastic is injected around it. The part comes out as a single piece, with no screwing or bonding.

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Which materials do you mold?

Commodity materials such as PP, ABS, PC, PA 6, PMMA and PETG, engineering polymers such as PSU and PEI, custom-formulated engineering materials based on PA or PA 12, notably for radiation protection, and filled compounds: stainless steel fiber-filled polyamide, scallop shell-filled polypropylene. The choice depends on the part’s mechanical, thermal, chemical, regulatory and cosmetic requirements.

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Can you use recycled materials?

Yes. 40% of the plastic processed by the group is recycled, and Factory Plast holds the MORE label for its use of recycled plastics. Feasibility depends on your part’s requirements and your industry.

Read: bio-based or petroleum-based, what is the difference? Link to this question
Who owns the mold?

As a rule, a mold paid for by the customer is the customer’s property. Ownership, maintenance and storage terms are set out in our quotation.

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Precision machining

How do I know whether a part should be molded or machined?

It depends on geometry, material, annual volume, required precision and overall project cost. Machining suits small batches, materials that cannot be molded and the tightest dimensional requirements; molding becomes competitive as volumes rise. A technical review settles the question, and some parts combine both.

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What is the difference between Swiss-type turning and milling?

Swiss-type turning (bar turning) machines rotationally symmetric parts from bar stock, in series and with high repeatability: screws, pins, tips. Milling removes material with a rotating tool to produce more complex shapes, pockets or freeform surfaces.

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Which materials do you machine?

Titanium (Ti-6Al-4V), medical stainless steels (316L, X15TN, X17, F16PH…) and engineering polymers such as PEEK, PPSU, polypropylene and UHMW-PE (grades 1020 and 1050). Precimade, our machining site, specializes in medical devices.

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Do you handle finishing?

Yes: bead blasting, vibratory finishing, anodizing, laser marking, electropolishing, heat treatment, welding and cleaning on a robotic cell. Each lot is delivered with its inspection records and traceability.

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Quality and certifications

What certifications do you hold?

The group’s companies hold the following certifications and labels: ISO 13485, IATF 16949, MORE label 2025, EcoVadis CSR assessment. Each certificate covers a specific company and scope; they can be downloaded from our website.

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How do you inspect part quality?

With coordinate measuring machines, roughness testers, non-contact vision systems and tensile testing, plus dedicated gauges developed for your parts. Processes are qualified before production (IQ, OQ, PQ) and nonconformities are handled with 8D.

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Can you provide a PPAP submission?

Yes. Factory Plast is IATF 16949 certified and applies automotive industry methods, including PPAP, FMEA and VDA 6.3 and 6.5.

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Do you provide production traceability?

Yes. Each lot can be traced back to its material, its manufacturing parameters and its inspection records, with a level of detail suited to your industry’s requirements.

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Medical devices

Can you manufacture parts for medical devices?

Yes. Factory Plast (injection molding) and Precimade (machining) are certified to ISO 13485:2016, the quality management standard specific to medical devices.

Our medical expertise Link to this question
Do you machine implants?

Yes. Precimade’s ISO 13485 certificate covers the contract manufacturing of non-sterile implantable medical devices. Precimade is also registered with the FDA as a contract manufacturer.

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Do you work for medical imaging?

Yes. Factory Plast molds radiation protection parts in custom-formulated engineering materials based on PA or PA 12, and the group produces technical components for imaging equipment.

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The group

Which industries do you serve?

The group’s companies work for automotive, healthcare and medical devices, allied health, imaging and radiation protection, aerospace and defense, building and construction, chemicals, connected devices, sports and leisure, industrial and consumer goods.

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Where are your sites?

Headquarters and the engineering office are in Décines-Charpieu near Lyon, injection molding in La Baume-d’Hostun (Drôme), machining in Bourg-en-Bresse (Ain). Perfect Plast, in Sousse, Tunisia, adds injection molding and assembly capacity to the group.

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What capabilities does Processus Group bring together?

Product design, engineering, prototyping, 3D printing, tooling, plastic injection molding, assembly, finishing and marking, precision machining and industrialization.

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Why work with a multi-capability industrial group?

Bringing several capabilities together within one group streamlines communication, speeds up decisions and ensures better technical consistency throughout the project, with a single point of contact from prototype to production.

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What are the benefits of manufacturing in France?

Manufacturing in France shortens communication loops, makes project follow-up easier, secures production quality and keeps technical teams close to their customers.

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What is your environmental approach?

It rests on measurable actions: 40% recycled plastic processed, the MORE label and Factory Plast’s EcoVadis CSR assessment. Our values are summed up in our signature: “Building a sustainable future together”.

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Where can we meet?

At our sites, by appointment, and at the trade shows and business meetings we attend. We exhibit every year at Global Industrie, France’s leading industry trade show.

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