Round Metal Snap Dome Sheet with Adhesive Tape
Features ultra-reliable copper foil grounding, low electrical profile, and robust contact reliability for control logic.
Explore Specification16+
Years Engineering Expertise
2,600㎡
ISO 9001 In-House Facility
<0.05Ω
Ultra-Low Contact Resistance
1,000,000+
Key Actuation Lifespan
OEM/ODM Production Series
Industrial-Grade Silk Screen Membrane Switches & Tactile Arrays
Configured to withstand harsh manufacturing conditions, agricultural exposure, and medical hygiene protocols across Granada and the broader Iberian peninsula.
Electronic Film Circuit Waterproof Button Switch
Sealed screen-printed silver circuitry designed to prevent liquid ingress in portable electronics and consumer controls.
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Custom Silk Printing Embossed Metal Dome Overlay
Precision multi-color screen printing with rim or pillow embossing for unmistakable tactile operator confirmation.
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LGF Backlit Membrane Keypad with Dome Sheet
Integrated Light Guide Film (LGF) ensuring uniform key illumination under low ambient operating environments.
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Single-Layer SUS301 Stainless Steel Dome Array
High-elasticity SUS301 stainless steel domes pre-affixed to release liners for swift, accurate manual or machine alignment.
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Intelligent Appliance Membrane Switch Panel
Chemical-resistant overlay formulated for sanitization detergents, humidity cycles, and intense routine actuation.
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Polycarbonate Film Instrument Display Switch
Optical-clarity polycarbonate window integration with anti-glare finish for digital readouts and measuring devices.
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Cross 4-Legged SMT Snap Dome Reel Packing
Automated tape-and-reel packaging customized for high-speed automated Surface Mount Technology (SMT) pick-and-place lines.
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Engineering White Paper
Stack-Up Topology & Material Selection for HMI Systems
A look inside the mechanical layering and chemical durability of screen-printed membrane assemblies manufactured to ISO 9001 and SGS-audited standards.
Technical Overview: Silk screen membrane keypads represent a multilayered sandwich of polymer films, conductive functional inks, and high-performance adhesives. When engineered for deployment in southern Spain’s variable climate—from the sub-zero frost of the Sierra Nevada foothills to the high-temperature arid plateaus of the Vega de Granada—the choice between Autotype biaxially oriented polyethylene terephthalate (PET) and stabilized polycarbonate (PC) determines thermal fatigue limits, solvent tolerance, and mechanical actuation life.
| Functional Layer | Material Core | Technical Characteristics | Granada Engineering Benefit |
|---|---|---|---|
| 1. Graphic Overlay | Autotex PET / Lexan™ PC | Subsurface screen printing, textured finishes, anti-glare window routing | Impervious to olive oil processing esters, cleaning solvents, and UV degradation. |
| 2. Overlay Adhesive | 3M 467MP / 3M 468MP | High-shear acrylic adhesive, resistant to thermal cycling (-40°C to +150°C) | Prevents edge curling during extreme seasonal temperature swings. |
| 3. Dome Retainer | Polyester Film Spacer | Precision die-cut vent channels, balanced pressure equalization routing | Mitigates internal air expansion caused by rapid barometric shifts. |
| 4. Tactile Actuator | SUS301 Stainless Steel | Trip force 160g–450g; gold/nickel plating, 4-leg cross or circular profiles | Delivers distinct tactile feedback through heavy industrial work gloves. |
| 5. Circuit Layer | Conductive Silver + Carbon | Printed conductive silver traces protected by carbon overcoat wear caps | Eliminates silver migration under high humidity environments. |
| 6. Rear Adhesive | 3M 300LSE / 9472LE | Formulated for low surface energy (LSE) powder-coated metal and ABS plastics | High bond strength onto rough cast aluminum control consoles. |
IP65 to IP67 Sealing
By routing perimeter gasket barriers and employing hydrophobic vents, the switch matrix remains completely protected from washdown sprays, fine sand, and bio-chemical contaminants.
1 Million+ Actuations
Using heat-treated SUS301 alloy snap domes and ductile silver-paste flex points, our keypads resist metal fatigue and contact resistance drift across lengthy operational life cycles.
ESD / EMI Shielding
Integrated aluminum foil or conductive carbon grids eliminate electro-static discharge failures up to 15kV, shielding delicate microcontrollers and digital bus circuits.
Regional Integration
Tailored HMI Applications Across Granada's Core Industries
From metropolitan biomedical hubs to sprawling agro-processing centers, our membrane switches meet the exact regulatory and mechanical demands of the Andalusian market.
Biomedical & Health Sciences (PTS Granada)
At the Parque Tecnológico de la Salud (PTS), medical device manufacturers require membrane touch panels that withstand daily wipe-downs with isopropyl alcohol, sodium hypochlorite, and quaternary ammonium compounds. Our antimicrobial PET graphic overlays feature flush, crevice-free surfaces that prevent bacterial harbor while maintaining high optical clarity for diagnostic screens.
Agro-Industrial & Olive Oil Automation
Granada’s agricultural processing plants—including major olive oil mills, bottling plants, and sorting lines across Motril and Loja—operate in dusty, moisture-heavy, and oil-rich environments. We produce IP67-rated tactile membrane switches that resist fatty-acid corrosion, feature high-actuation metal domes operable with gloves, and maintain seal integrity during high-pressure hose-downs.
Renewable Energy & Field Equipment
With massive solar farms in the Guadix plateau and wind generation in the mountain corridors, outdoor field controllers face severe UV degradation and daytime/nighttime temperature deltas spanning 35°C. Our UV-stabilized polycarbonate overlays and silicone-sealed membrane switches guarantee resistance to yellowing, embrittlement, and internal condensation.
Industry Evolution
Technological Trends Reshaping Membrane Controls
Emerging engineering standards transforming electromechanical design for next-generation smart machinery in southern Spain.
Capacitive & Mechanical Hybrids
Merging the clean, sterile aesthetic of capacitive touch with high-force tactile emergency stops or power pushbuttons on a single printed front panel assembly.
Ultra-Thin Light Guide Films (LGF)
Transitioning from discrete, bulky LED arrays to microscopic prism-etched Light Guide Films (LGF) that distribute uniform backlight across keys with minimal energy consumption.
Flexible Printed Circuits (FPC)
Migrating from traditional silver-printed flexible tails to polyimide FPC circuits, enabling ultra-fine pitch (down to 0.5mm ZIF connectors) and surface-mounted active ICs.
Circular Economy & RoHS/REACH
Strict European adherence requiring fully compliant lead-free soldering, halogen-free conductive inks, and easily separable recyclable polyester overlays at product end-of-life.
Direct Factory Advantage
Engineering Verification: Dongguan Cevra Electronic Technology Co., Ltd.
Established in March 2009, we deliver complete in-house manufacturing, zero-broker markup, and rigorous testing protocols for European industrial procurement.
ISO 9001 & SGS Onsite Verified
Our 2,600㎡ manufacturing facility in Dongguan operates strictly under an ISO 9001:2015 Quality Management System. Independently audited onsite by SGS Group, providing traceable material lot reports and zero-defect quality control for each production batch.
Complete In-House Process Chain
We eliminate subcontractor delays by integrating every production stage under one roof: silk screen printing, precision die punching, high-speed laser cutting, CCD vision drilling, automated lamination, and automated snap dome placement machines.
Specialized QC Testing Laboratory
Every batch undergoes testing in our internal lab: metal dome load force testers, high/low temperature environmental stress chambers (-40°C to +85°C), adhesive tension peel meters, holding tack testers, electric pencil hardness testers, and automated optical CCD checks.
Procurement Clarity
Frequently Asked Questions by Industrial Buyers in Granada
Clear answers regarding shipping logistics, EU customs compliance, prototyping schedules, and drawing formats.
What are the lead times and shipping routes for custom membrane switch deliveries to Granada?
Engineering prototype samples are typically completed within 5 to 8 working days following Gerber/CAD artwork signoff. For volume production orders, factory turnaround is 12 to 18 business days. Shipments to Granada are dispatched via express air courier (DHL Express, FedEx, UPS) with transit times of 3 to 5 business days directly to Federico García Lorca Granada Airport customs handling or your facility in Polígono Industrial Juncaril or Asegra. Sea freight and air-freight consolidation through Valencia or Algeciras ports are also available for large recurring OEM consignments.
Are materials compliant with European Union RoHS, REACH, and CE directives?
Yes. All raw materials—including Autotex PET films, polycarbonate overlays, Henkel/Acheson conductive silver pastes, 3M adhesive transfer tapes, and stainless steel snap domes—fully comply with EU RoHS 3 Directive (EU) 2015/863 and REACH Regulation (EC No 1907/2006). Comprehensive chemical compliance certificates, material safety data sheets (MSDS), and Certificate of Conformance (CoC) documentation are provided with every shipment.
What technical drawing and CAD file formats are accepted for DFM analysis?
Our engineering team in Dongguan supports AutoCAD (DWG, DXF), vector artwork files (Adobe Illustrator .AI, PDF with vector paths), and PCB layout files (Gerber RS-274X, ODB++). For graphic overlays, please specify target Pantone Matching System (PMS) or RAL color codes. Our engineers will perform a complimentary Design for Manufacturability (DFM) review, inspecting trace pitch, dome clearances, and tail routing before cutting tooling dies.
How do you guarantee tactile consistency across thousands of membrane key actuations?
We stamp our tactile snap domes using high-precision SUS301 stainless steel dies with controlled micro-hardness parameters. Our production lab samples every lot using an automated dome load tester, measuring the force-displacement curve (F-D curve) to ensure the peak actuation force (typically 250g to 350g ±30g) and switch tactile ratio remain identical across the entire production batch.
What is the Minimum Order Quantity (MOQ) for custom-engineered prototypes?
We support agile hardware development and European R&D cycles. Prototype verification runs can start from as few as 10 to 50 pieces. For standardized metal domes, quantities start at 1,000 units, while customized mass production runs typically achieve maximum unit cost efficiency at 100 to 500 units and above.