Electronics potting, hotmelt moulding, conformal coating, ultrasonic welding and foam gaskets since 1979.
Reijnen Sealing
Peize (NL) · Cologne (DE)New on Amplifa
About Reijnen Sealing
Reijnen Sealing is a specialist company for electronics potting and sealing, established in 1979, with locations in Peize (Netherlands) and Cologne. The company originally specialised in potting techniques and today offers a broad portfolio of processes: casting/potting in preformed housings, free-form casting with casting resin as the housing, partial embedding, the dam & fill method, hotmelt moulding (low-pressure injection), conformal coating, ultrasonic welding (20–70 kHz), bonding, plasma activation, laser engraving and fully automatic polyurethane foam gaskets (FIPFG). The materials used are solvent-free, UL 94 V0-certified polyurethane casting resins, recyclable polyamide hotmelt and UV coatings. Customers come from the automotive industry, agribusiness, biomedicine, chemicals, the LED and lighting industry, shipping & offshore, defence, electronics and semiconductor production. Since 2024, Reijnen Sealing has been part of the TTS Group; Reijnen Sealing GmbH extends the service to the German market.
- Site
- Cologne
- Processes
- Casting / potting (electronics potting in preformed housing), Casting resin as housing (free-form casting / embedding), Polyurethane casting, potting and embedding (casting into existing housing, fully automatic), Partial embedding (selective potting of PCB sections), Dam & fill method (encapsulation of components), Hotmelt moulding (low-pressure injection, cooled aluminium moulds), Protective lacquering / conformal coating (robot-controlled PCB coating), TWIN CURE UV coating (solvent-free 1-component system, 5 to 10 times thicker layer)
- Materials
- Polyurethane casting resin (UL 94 V0, solvent-free), Polyamide hotmelt (organic, 100 % recyclable), Polyurethane foam (PU gasket, 2-component), TWIN CURE UV coating (Peters Lackwerke, 1-component, solvent-free), Polyurethane casting resin (UL 94 V0), Wevo 552 polyurethane, Polyamide hotmelt, Polyurethane foam (2K)
- Certificates
- ISO 9001:2015
- Founded
- 1979
- Industries
- Automotive industry, Agribusiness, Biomedical industry, Chemical industry, Lighting technology / LED industry, Shipping & offshore
- 01
Consulting / Engineering
- 02
Plasma activation / corona pre-treatment
- 03
Casting / potting, hotmelt moulding, dam & fill, conformal coating
- 04
Ultrasonic welding / bonding / foam gasket
- 05
2D product inspection
- 06
Shipping
Materials & Processes
Polyurethane casting resin (UL 94 V0)
Solvent-free PU resin for electronics potting with IP68 protection against moisture, vibration and dielectric breakdown.
Wevo 552 polyurethane
Used for dam & fill encapsulation of sensitive electronic components.
Polyamide hotmelt
Organic, 100 % recyclable material for waterproof encapsulation of sensors in hotmelt moulding.
Polyurethane foam (2K)
For fully automatically applied FIPFG gaskets in various shapes and sizes.
TWIN CURE UV coating (Peters Lackwerke)
Solvent-free 1-component system for thicker protective coatings on printed circuit boards.
Locations
Peize
NLMain site / production
- Lot size
- Single parts up to very large series
- Materials
- PU casting resin (UL94 V0), polyamide hotmelt, PU foam, UV coatings
- THT-J-400500-V multifunctional machine (casting, gluing, coating, 4-axis robots, 2D vision)
- Branson 2000 ultrasonic welding machine (20–70 kHz)
- CNC-controlled 2K dosing and injection robots for foam gaskets (precision 1/100 mm)
- Fully automatic polyurethane potting system
- Robot-controlled PCB coating system
Cologne
DESite of Reijnen Sealing GmbH (newly opened, TTS Group)
Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Casting / potting (electronics potting in preformed housing)Plastics | – | – | – | – | Polyurethane casting resin (UL 94 V0) |
| Casting resin as housing (free-form casting / embedding)Plastics | – | – | – | very small series – very large series | Polyurethane casting resin (UL 94 V0) |
| Polyurethane casting, potting and embedding (casting into existing housing, fully automatic)Plastics | – | – | – | – | Polyurethane (UL94 V0, IP68) |
| Partial embedding (selective potting of PCB sections)Plastics | – | – | – | small – very large volumes | Polyurethane casting resin |
| Dam & fill method (encapsulation of components)Plastics | – | – | – | – | Wevo 552 UL94 V0 PU |
| Hotmelt moulding (low-pressure injection, cooled aluminium moulds)Plastics | – | – | – | – | Polyamide hotmelt |
| Protective lacquering / conformal coating (robot-controlled PCB coating)Surface | – | – | – | – | Lacquer (transparent, fluorescent), TWIN CURE UV coating |
| TWIN CURE UV coating (solvent-free 1-component system, 5 to 10 times thicker layer)Surface | – | – | – | – | TWIN CURE UV lacquer |
| Dipping process (dip coating)Surface | – | – | – | – | Protective lacquer |
| Ultrasonic welding of plastics (20/30/35/40/70 kHz, process times often < 1 s)Joining | – | – | – | – | Plastic (injection-moulded products) |
| Laser engraving of plasticsSurface | – | – | – | – | Plastic |
| Plasma activation / corona pre-treatmentSurface | – | – | – | – | Plastic surfaces |
| Bonding / industrial adhesive bondingJoining | – | – | – | – | Industrial adhesives |
| Foam gasket / FIPFG (formed-in-place foam gasket), PU gasket, fully automatic by means ofJoining | CNC precision 1/100 mm | 200 mm × 2400 mm × 200 mm | – | one-off – series | Polyurethane foam (PU), 2-component |
| Application of 1-component gaskets / doming of components (THT-J-400500-V)Surface | – | – | – | – | 1-component gaskets |
| Assembly of componentsAssembly | – | – | – | – | – |
| 2D product inspection / visual inspectionInspection | – | – | – | – | – |
5 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Multifunctional machine for casting, gluing, coating (4-axis robot, 2D vision, | TH Technology BV THT-J-400500-V | – | – | 2024 | Peize |
| Ultrasonic welding machine (20–70 kHz) | Branson 2000 | – | – | – | – |
| CNC-controlled 2-component dosing and mixing systems / injection robots for foam gaskets | – | – | X 2400 mm x Y 1000 mm x Z 200 mm | – | Peize |
| Potting system (fully automatic system for polyurethane casting) | – | – | – | – | Peize |
| Robot-controlled sprayer for PCB coating | – | – | – | – | – |
Additional services
Quality
Reijnen Sealing is certified to ISO 9001:2015 (certificate no. SZ 1780048). Production control is carried out, among other things, by means of 2D product inspection (visual inspection) and 2D vision systems on the production equipment.
| Evidence | Peize | Cologne |
|---|---|---|
| ISO 9001:2015 |
History
- 1979
Founded by André Reijnen; specialisation in potting techniques due to market demand.
- 2003
After the acquisition, the entire company relocated from Amsterdam to Groningen; after two years in Grootegast, a move to Peize followed.
- 2024
TTS Group took over Purtec Kunststoftechniek BV (Heerhugowaard) on 1 January 2024; Reijnen Sealing is part of the TTS Group.
- 2024
Introduction of the THT-J-400500-V multifunctional machine from TH Technology for the electronics industry.
- 2025
TTS Group opened a new site in Cologne; expansion of the portfolio to include the dam & fill method.