Your project for trays, inserts, packaging, or blisters.


Specializing in custom thermoformed packaging, CSI is the partner for industries with demanding processes: Automotive, Electronics, Cosmetics, Medical and Animal Health, Nuclear, Telecoms, and more.

Our part trays, inserts, packaging, and blisters drive the performance of your operations and are co-designed according to your specific needs and challenges: required properties, eco-design, and optimization of the total cost, among others.

As an independent French exporting SME based near Nantes, CSI is ISO 9001 and 14001 certified, awarded the Gold Ecovadis 2023 Medal (CSR) with a score of 90/100 on the Environmental component.

Agility combined with rigorous processes, a strong culture of continuous improvement, innovation, and factual sustainable development make CSI the partner for your value creation.

The share of recycled material in total production.

Business expertise continually enriched by continuous progress and innovation.

Founded in 1991, CSI has been enriching its accumulated expertise in thin-gauge thermoforming:

  • Operationally, by applying Lean principles (originally from the Toyota Production System) for the continuous improvement of its key processes: design, production, planning-scheduling, management. Corresponding tools such as short and frequent rituals, visual management of performance, employee involvement through improvement suggestions, SMED (Single-Minute Exchange of Die), production film, TPM (Total Productive Maintenance), A3 projects, and rapid improvement workshops (kaizen) are used in line with our business priorities.
  • Through innovation: participation in collective IPC (Institut du Packaging et de la Conception) actions every year, including as a beta tester, internal collective brainstorming sessions...
  • By vigorously implementing a sustainable development and continuous environmental progress strategy initiated in 2016: ISO 14001 certification, very high incorporation rate of recycled materials, in-depth eco-design, and conducting Life Cycle Assessments for our clients, commitment to the Clean Sweep operation, participation in the national decarbonization accelerator Bpifrance-ADEME 2021-2023,...

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Spontaneous application

CSI Thermoformage is constantly seeking competent, motivated individuals who are drawn to the richness of our profession, the human scale, and the dynamic development of our company.
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