Polycarbonate Touch Screen Printing Panel
Subsurface screen-printed instrument display panel offering superior optical clarity and rugged scratch resistance.
16+
Years HMI Experience
2,600㎡
Class 10k In-House Facility
>1M
Actuation Switch Cycles
SGS / ISO
Verified Audited Production
Direct Factory Solutions
High-Performance Graphic Overlays & HMI Assemblies
Manufactured with medical and industrial-grade polyester films, tailored specifically for rugged automation, laboratory measurement, and high-frequency tactile switching.
Double-Sided SUS301 Dome Array with EMI
Acoustic and tactile feedback engineered with SUS301 snap domes and integrated electromagnetic shielding.
White PET Waterproof SUS301 Dome Array
Sealed single-layer polyester substrate protecting contact arrays against condensation and particulate ingress.
Intelligent Appliance Touch Membrane Panel
Chemical-resistant, wipe-down capacitive interface engineered for wet appliances and industrial washers.
Embossed Tactile Graphic Overlay Switch
Rim- or pillow-embossed PET graphic overlay coupled with precision tactile metal domes for intuitive blind operation.
Precision Flexible Film Membrane Circuit
Screen-printed conductive silver traces with carbon overcoat protection for extended bending life and resilience.
Single-Layer Keypad SUS301 Dome Array
High-density tactile dome array for handheld diagnostic terminals, logistics scanners, and remote transceivers.
Matte Black Industrial Control Switch Panel
UV-stabilized matte finish overlay engineered for DIN-rail and cabinet automation controls in dirty environments.
Engineering Depth
Technical Superiority: Biaxially-Oriented PET in Demanding HMIs
Why mechanical designers and electrical systems integrators in North Rhine-Westphalia specify high-crystallinity Polyethylene Terephthalate (PET) over standard Polycarbonate (PC).
Flexural Fatigue Endurance
Polycarbonate (PC) is vulnerable to micro-fractures under repeated deformation. Biaxially oriented PET (such as Autotex® XE and Melinex®) withstands >5,000,000 switch flex actuations without plastic failure or visual crazing, making it mandatory for high-duty tactile switches.
- Tested to ASTM F1578 flexural durability protocols
- Zero key-emboss relaxation after million cycles
- Maintains tactile ratio across broad temperatures
Aggressive Chemical Immunity
Dortmund's manufacturing plants and processing units involve aggressive industrial cleaning regimes, lubricating oils, and chemical spills. PET provides near-total resistance against aliphatic hydrocarbons, alcohols, cleaning agents, and dilute acids.
- Immune to isopropyl alcohol, MEK, and mineral spirits
- Resistant to DIN EN 60529 high-pressure washdowns
- Hermetic barrier preventing circuit corrosion
Thermal & Dimensional Equilibrium
With a continuous operating window from -40°C to +85°C, thermal cycling will not produce layer delamination, bubble generation, or ink cracking when bonded using high-cohesion acrylic adhesives (e.g., 3M 200MP / 467MP / 468MP).
- Low thermal coefficient of linear expansion
- Post-cured dielectric silver inks avoid silver migration
- Stable across unheated warehouse environments
Specification Matrix
PET vs. Polycarbonate (PC) Overlay Material Comparison
A technical guide to help engineering teams specify the proper layer stack for industrial and outdoor deployments.
| Evaluation Parameter | High-Grade PET (Autotex® / Melinex®) | Standard Polycarbonate (Lexan®) | Engineering Selection Rule |
|---|---|---|---|
| Switch Actuation Life | >5,000,000 cycles without failure | ~100,000 to 300,000 cycles (fatigue prone) | Specify PET whenever tactile domes flex the graphic layer directly. |
| Chemical / Solvent Resistance | Excellent against fuels, brake fluids, cleansers | Poor; crazes with alcohols, esters, hydrocarbons | PET is mandatory in industrial machine shops and medical labs. |
| Embossing Profile Retention | Requires thermal hydro-forming; high memory retention | Easily cold-embossed; lower thermal recovery | PET maintains crisp perimeter or pillow tactile embossing permanently. |
| Flame Retardancy Rating | UL94 VTM-2 (special films reach V-0) | UL94 V-0 / V-2 compliant naturally | Select flame-retardant grade PET if DIN EN 60950 is required. |
| Dielectric Strength | ~15–20 kV/mil | ~12–15 kV/mil | PET provides higher electrical insulation for sensitive logic lines. |
Regional Industrial Focus
Localized Applications in Dortmund & the NRW Hub
How our custom graphic overlays and switch arrays drive Industry 4.0 innovations across the Dortmund logistics cluster, mechanical engineering firms, and biomedical laboratories.
Intralogistics & Automated Material Handling
Dortmund is internationally recognized for its intralogistics clusters, automated guided vehicles (AGVs), and sorting facilities (such as those around the Port of Dortmund and Westfalenhütte). Our PET overlays equip handheld barcode scanners, conveyor emergency stop panels, and telematics terminals with IP67 hermetic ingress seals and abrasion-proof surface textures.
- Withstands drops, grease, and continuous handling
- Clear LCD/OLED display windows with anti-glare finish
- Tactile feedback operable with heavy work gloves
Heavy Machinery & CNC Industrial Cabinets
Serving mechanical engineering manufacturers across North Rhine-Westphalia, our overlays provide subsurface graphics that resist cutting fluids, lubricants, and metal filings. Embedded SUS301 stainless steel domes maintain a crisp, distinct click feel even on noisy machine shop floors.
- High tactile trip forces (300g–500g) prevent accidental presses
- Integrated aluminum sub-panels for direct cabinet mounting
- Custom cutouts for rotary potentiometers and displays
Biomedical, Cleanroom & Analytical Devices
Institutes and medtech companies around the Biomedizinzentrum Dortmund require sterilizable operator panels. Our smooth-surface, sealed PET overlays prevent microbial accumulation, withstand harsh quaternary and alcohol disinfectants, and satisfy strict hygiene standards.
- Antimicrobial film coatings (Microban® or equivalent)
- Dead-front graphics for hidden-until-lit indicator icons
- Total liquid barrier against chemical cleaning agents
Market Evolution
Emerging HMI Engineering Trends in Dortmund
Strategic advancements reshaping industrial control requirements across German manufacturing hubs.
Capacitive Sensing & Tactile Hybrids
German OEMs are rapidly replacing wear-prone mechanical levers with hybrid control surfaces: flat, easy-to-clean capacitive touch regions for parameter scrolling, combined with distinct tactile metal dome keys for critical emergency stops and confirmations.
Integrated Ultra-Thin Light Guide Films (LGF)
Bulk LED assemblies are being phased out in favor of 0.125mm ultra-thin Light Guide Films. LGF spreads light evenly across keys and icons using fewer side-firing LEDs, lowering power draw and total stack height for slim industrial tablets.
Compliance with Stringent EU Eco-Directives
Dortmund procurement managers prioritize supply chains compliant with EU RoHS 3 (Directive 2015/863/EU) and REACH (EC 1907/2006). Cevra provides complete full-material disclosures (FMD) and independent laboratory testing documentation.
Manufacturing Authority
Why Dortmund Procurement Teams Partner with Cevra
Combining 16+ years of direct OEM/ODM manufacturing capability with rigorous quality verification from prototype to volume production.
ISO 9001 & SGS Onsite Verified
Production operations at our 2,600㎡ facility run under an audited ISO 9001 Quality Management System, verified onsite by SGS Group. Every batch undergoes rigorous inspection to eliminate defect risks before international freight dispatch.
- CCD automatic vision print alignment
- Dome force curve testing and life cycle actuation
- Thermal cycling verification (-40°C to +85°C)
Full In-House Manufacturing Control
We do not broker your orders through third-party shops. Screen printing, laser precision cutting, CCD drilling, dome array placement, and automated laminating lines are fully housed under one roof.
- Single technical point of contact from DFM to delivery
- Rapid turnaround on engineering prototypes (5–7 days)
- Custom adhesive lamination (genuine 3M 467MP, 468MP, 300LSE)
Direct-to-Germany Logistics & Trade Assurance
Ranked #5 Most Popular in Keypads & Keyboards on international trade portals, Cevra delivers seamless DAP/DDP freight to industrial parks across Dortmund, Bochum, Essen, and Düsseldorf with express customs clearing.
- Low initial MOQs (prototypes from 10 pcs; series from 100 pcs)
- Secure Trade Assurance and standard T/T payment terms
- Full export crating with moisture-barrier and ESD packaging
Purchasing Intelligence
Frequently Asked Questions by German Engineering Buyers
Practical answers covering international logistics, technical drawing submissions, and testing compliance.
What files and technical tolerances are required for a quotation?
We accept vectorized CAD drawings in DXF, DWG, STEP, or Adobe Illustrator (AI/PDF) formats. Vector artwork should define graphic legends, Pantone or RAL color references, key embossing boundaries, window transparency, and pin-out schematics. Our default dimensional tolerance is ±0.15 mm on outer die-cutting and ±0.05 mm on laser-machined features.
How does Cevra ensure color fidelity to German RAL or Pantone specs?
All inks are mixed and cross-checked under standard D65 light booths using calibrated spectrophotometers. For translucent display windows and backlighting indicators, we offer spectrally matched transmission inks with haze-free clarity to ensure true-to-life LED illumination.
Can you produce waterproof HMIs rated to IP65, IP67, or NEMA 4X?
Yes. By employing closed-loop perimeter perimeter gasket tracks with genuine high-tack acrylic adhesives (such as 3M 467MP, 468MP, or 300LSE for low-surface-energy powder-coated enclosures), we engineer continuous seals that block pressurized washdowns, dust, and corrosive aerosols.
What tactile dome options are available for industrial gloves?
For equipment frequently operated with gloves—such as material handling stations or outdoor logistics devices—we recommend 10 mm or 12 mm 4-leg cross stainless steel (SUS301) snap domes rated at 350g to 500g trip force with tactile feedback ratios exceeding 45%.
What are the typical lead times for prototypes and mass production to Dortmund?
Design-for-Manufacturability (DFM) reviews are completed within 24 hours. Working prototypes typically ship in 5 to 7 business days via DHL Express or FedEx Air, reaching Dortmund, Germany within 3 to 4 days. Mass production volume batches are turned around in 12 to 18 business days.
Ready to Build Your Custom HMI Graphic Overlays?
Send us your dimensional drawings or project specifications today. Our senior application engineers will provide a thorough DFM review, layer stack recommendations, and a competitive factory quotation within 24 hours.
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