Percy Limacher

Managing Director IE Plast Zürich

I am a qualified plastics engineer (NDS FH) with an EMBA in Strategic Management. After studying mechanical engineering in the early 1990s, I specialised in plastics technology and have continuously expanded my expertise – particularly in cleanroom planning, cleanroom technology, and management. My career combines technical depth, entrepreneurial thinking, and many years of hands-on experience in the execution of industrial projects.

Percy Limacher
“When customers see that process-driven planning and holistic expertise ensure effectiveness and efficiency all the way through to execution, they recognise the true value IE brings – well-designed factories start with clear processes.”

Brief Profile: Expertise at a Glance

I work closely with clients and maintain strong links to the plastics processing industry. For many years, I have supported companies in the planning and execution of their production sites. My goal is to reduce complexity, make interdependencies easy to understand, and develop solutions that perform sustainably in day-to-day operations.

Industry Focus

My focus covers the full range of plastics processing technologies – particularly injection moulding, extrusion, thermoforming, and specialised processes. I place a strong emphasis on medical technology, where the highest requirements for processes, cleanroom technology, and quality meet short time-to-market cycles. Regionally, I focus on German-speaking Switzerland.

Role at IE Group

I have been Managing Director of IE Plast since 1998. I have been a member of the Executive Board of IE Industrial Engineering Zurich AG since 2001 and a member of the Group Management of IE Engineering Group AG since 2020.

Technical Expertise

I support companies on strategic production topics, operating and intralogistics concepts, as well as technical strategy development and master planning. In addition, I take overall project leadership for demanding investment projects – from the initial idea to successful execution – particularly in the plastics, mechanical engineering, and medtech industries.

My way

After completing my studies, I took responsibility for sales and new projects in a plastics processing company – from initial customer enquiries through to series-production readiness. This period shaped my understanding of how closely technology, market needs, and profitability are connected.

At Zühlke Engineering, I then developed plastic product applications for the food, sanitary, and semiconductor industries. There, I learned to view industrial challenges from multiple perspectives and to think about technical solutions consistently in an application-oriented way.

In March 1998, I joined IE as a young operations planner and was part of the employee buyout from the very beginning – a formative chapter that strongly shaped my entrepreneurial mindset. Shortly afterwards, I took over the management of IE Plast Engineering and became part of the leadership team in Zurich.

Another important milestone followed in 2013 with the strategic decision to establish the IE Plast division in Munich. The German market for plastics processing is around eight times larger than Switzerland’s. Together with the local team, I supported this development for around five years, up to 2018.

Since 2020, I have been a member of the Group Management of IE Engineering Group AG as part of an internal succession plan. My focus has increasingly shifted towards leadership, organisation, strategic development, and business development.

My Vision for 2040

IE Plast is the leading partner for planning and execution of plastics-processing industrial buildings in German-speaking Switzerland. We stand for the highest quality, sustainable solutions, and a compelling price-performance ratio. Every third project is developed together with us – especially where complex logistics, cleanroom technology, and short time-to-market cycles are critical.

Selected Projects

MCAM Symalit AG - Planning and Execution of a Production facility for efficient raw-material conveying
Plast
Lenzburg, Switzerland

MCAM Symalit AG - Planning and Execution of a Production facility for efficient raw-material conveying

MCAM Symalit AG, based in Lenzburg, is Switzerland’s market-leading provider of plastic cable protection conduit solutions. To reduce exposure to price fluctuations in plastic granules, MCAM Symalit significantly expanded its storage capacities. IE Plast delivered a future-ready raw-material conveying system as the design-build contractor, including energy optimisation through a centralised vacuum system – all while operations continued uninterrupted.
SCHOTT Pharma AG - Doubling cleanroom production
Plast
Life Science
St. Gallen, Switzerland

SCHOTT Pharma AG - Doubling cleanroom production

In St. Gallen, SCHOTT AG produces prefillable syringes made of high-quality polymer for the global pharmaceutical industry. As a general contractor, IE Plast doubled cleanroom production in record time.
Weidmann Medical Technology AG - Reconstruction and expansion in record time during ongoing operations
Plast
Bad Ragaz, Switzerland

Weidmann Medical Technology AG - Reconstruction and expansion in record time during ongoing operations

Weidmann Medical Technology is one of Switzerland’s leading independent suppliers of injection moulding systems. As general contractor, IE Plast delivered a 500 m² cleanroom operations area while production continued.
Huber Kunststoff AG - Masterplan and Execution of a Pioneering New Production Facility
Plast
Sommerau, Switzerland

Huber Kunststoff AG - Masterplan and Execution of a Pioneering New Production Facility

Huber Kunststoff AG is one of the leading manufacturers of high‑quality plastic parts and assemblies. IE Plast developed a holistic masterplan and, as general contractor, delivered the new production facility with a sustainable energy concept.
Gebr. Renggli AG - Project Security Through Planning and Execution From a Single Source
Plast
Schaffhausen, Switzerland

Gebr. Renggli AG - Project Security Through Planning and Execution From a Single Source

Gebr. Renggli AG is one of the leading suppliers of thermoplastic products in medical technology. IE Plast completed the extension for injection moulding and assembly under clean room conditions in just 9 months.
Georg UTZ AG – Intelligent Masterplan for the Phased Transformation of Injection‑Molding Operations
Plast
Bremgarten, Switzerland

Georg UTZ AG – Intelligent Masterplan for the Phased Transformation of Injection‑Molding Operations

Plastic pallets and logistics containers are the core business of Georg UTZ AG. IE Plast developed a long‑term, 15‑year masterplan to consolidate and transform injection‑molding and intralogistics operations in clearly defined phases.
B. Braun Medical AG – Production Expansion Through Holistic General Planning in Plastics Processing
Plast
Life Science
Escholzmatt, Switzerland

B. Braun Medical AG – Production Expansion Through Holistic General Planning in Plastics Processing

The B. Braun Group is one of the world’s most established providers of pharmaceutical and medical technology products. IE Plast was responsible for the Planning and Execution of a major production expansion, doubling cleanroom manufacturing capacity within 18 months while operations continued without interruption.
Flex Precision Plastics Solutions AG – Cleanroom Planning for Energy‑Efficient Plastics Production
Plast
Life Science
Hägglingen, Switzerland

Flex Precision Plastics Solutions AG – Cleanroom Planning for Energy‑Efficient Plastics Production

The Swiss company Flex Precision Plastics Solutions AG manufactures highly complex medical products with a high degree of automation in cleanrooms. IE Plast completed the conversion to an ISO 7 cleanroom in just 4 months.