
Manufacture of aircraft glazing and helicopter windows made of PLEXIGLAS® as well as components made of transparent plastics

Plexiweiss GmbH
Holzkirchen · Hofolding (historical)New on Amplifa
About Plexiweiss
Plexiweiss GmbH was founded in 1949 as Josef Weiss Plastic GmbH in Munich and has been based in the Holzkirchen Industrial Park since 2016. Its core business is the processing of metals and thermoplastics. The company manufactures aircraft glazing and helicopter windows made of PLEXIGLAS® (PMMA) as well as components and assemblies made of PMMA and polycarbonate (PC) for the aerospace and automotive sectors. Production includes deep drawing of thermoplastics, NC-controlled machining of windows, specialized coatings, and the assembly of components. In addition to series products such as one-piece, frameless aircraft canopies for gliders and ultralight aircraft, prototypes and custom-made products are manufactured. The company belongs to the Glas Trösch Group and supplies leading OEMs and Tier-1 suppliers.
- Site
- Holzkirchen
- Processes
- Aircraft glazing / aircraft canopies (deep drawing/forming of PLEXIGLAS), Manufacture of helicopter windows, Deep drawing, Machining / NC-controlled machining of windows, Painting / coatings (specialized coatings), Assembly of components made of thermoplastic plastics, Processing of metals and thermoplastic plastics (core business), Aircraft glazing
- Materials
- PLEXIGLAS (PMMA), Polycarbonate (PC), Thermoplastic plastics, Metals, PLEXIGLAS® (PMMA), Polycarbonate, Thermoplastic Plastics
- Certificates
- DIN EN 9100:2018, ISO 9001:2015, ISO 9001, EN 9100
- Founded
- 1949
- Employees
- 11–50
- Industries
- Aerospace, Automotive, Industries using transparent plastics
- 01
Raw material inspection (inclusions, impurities)
- 02
Deep drawing/forming of the plastics
- 03
NC-controlled machining of the windows
- 04
Coating/painting
- 05
Assembly of components
- 06
Final inspection
Materials and Processes
PLEXIGLAS® (PMMA)
Main material for aircraft glazing and helicopter windows with high optical quality.
Polycarbonate
For weather-resistant, color-paintable plastic parts in the automotive sector.
Thermoplastic Plastics
Basis for deep drawing, component manufacturing, and assembly of components.
Metals
Part of the core processing business since the founding in 1949.
Sites

Holzkirchen
DEHeadquarters and plant in the Industrial Park
- Lot size
- Prototype to series
- Materials
- PMMA, PC, thermoplastic plastics, metals
- NC-controlled machines for machining of windows
Components


Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Aircraft glazing / aircraft canopies (deep drawing/forming of PLEXIGLAS)Plastics | – | – | – | Prototype – Series | PLEXIGLAS (PMMA), Polycarbonate |
| Manufacture of helicopter windowsPlastics | – | – | – | – | PLEXIGLAS (PMMA) |
| Deep drawingForming | – | – | – | – | Thermoplastic plastics, Metals |
| Machining / NC-controlled machining of windowsMachining | – | – | – | – | Thermoplastic plastics, Metals |
| Painting / coatings (specialized coatings)Surface | – | – | – | – | PMMA, PC |
| Assembly of components made of thermoplastic plasticsAssembly | – | – | – | – | Thermoplastic plastics |
| Processing of metals and thermoplastic plastics (core business)Plastics | – | – | – | – | Metals, Thermoplastic plastics |
1 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| NC-controlled machines for machining of windows | – | – | – | – | Holzkirchen |
Additional services
Reference customers
Quality
Quality controls are integrated into all processing stages: raw material is inspected for inclusions and impurities, and final inspection detects impermissible distortions. Certified according to DIN EN 9100:2018 and ISO 9001:2015 (DEKRA).
| Evidence | Holzkirchen |
|---|---|
| ISO 9001 | |
| EN 9100 |
History
- 1949
Founded as Josef Weiss Plastic GmbH in Munich by master toolmaker Josef Weiss
- 1956
First glazing for aircraft manufactured
- 1972
Branch office in Hofolding with the departments aircraft glazing and deep drawing
- 1997
Additional plant in Hofolding with machining capabilities
- 2016
Renamed to Plexiweiss GmbH, relocation to the Holzkirchen Industrial Park