AC220V High Voltage COB LED Strips
As a professional COB LED strip manufacturer, EONJOY LIGHTING supply premium AC220V direct drive high-voltage COB light strips with three complete protection grades: IP20 bare board, IP65 PE sleeve coated, and IP67 full silicone extrusion molding, covering indoor, semi-outdoor and fully waterproof application demands.
Core Product Advantage of Our AC220V COB Strips
Different from low-voltage DC COB strips that require external power adapters, our AC220V COB strips work directly with household mains alternating current, eliminating matching transformers. Built-in constant current driver chips are evenly distributed on the PCB to stabilize output current, avoid flicker, and maintain consistent brightness over long illuminated lengths.
Adopting advanced COB chip-on-board packaging technology, countless tiny LED chips are densely integrated on a single copper substrate. The light output is completely dot-free, ultra-uniform and soft without dark areas or bright bead spots, far superior to traditional discrete SMD high voltage strips. High lumen density supports high-brightness linear lighting while keeping a slim PCB body for easy concealment inside aluminum channels, ceilings, cabinets and wall moldings.
Three Waterproof Grade Options Detailed Introduction
Option 1: IP20 AC220V COB Strip (Indoor Dry Use Only)
＊Structure: Uncoated bare COB PCB without any protective outer layer, original circuit board exposed
＊Protection Rating: IP20, only prevents large solid foreign objects, no water or dust resistance
＊Features: Maximum luminous efficiency with zero light attenuation from coating layers, ultra-thin and flexible, excellent heat dissipation directly contacting aluminum profiles. Light transmittance reaches 98% without cover loss. Easy to cut at designated cutting marks and simple wiring connection.
＊Applicable Scenarios: Dry indoor environments, including indoor ceiling cove lighting, living room background wall decoration, indoor cabinet light, hotel lobby linear light, indoor showcase lighting, only used in fully dry places without moisture or splashing water.
Option 2: IP65 PE Sleeve Coated AC220V COB Strip (Semi-Waterproof, Anti-Splash)
＊Structure: The whole finished COB strip is fully wrapped by a transparent flexible PE plastic sleeve after PCB soldering, filled with light glue inside the tube to fix the circuit board
＊Protection Rating: IP65, dust-tight and resistant to splashing water from any angle
＊Features: Low-cost semi-waterproof solution, moderate flexibility, transparent PE shell clearly shows seamless COB light surface. It blocks dust, kitchen oil mist and occasional water splashes, effectively protecting PCB circuits and chips from short circuit risks. Compared with bare IP20 strips, slight luminous loss occurs but remains acceptable for general damp indoor spaces.
＊Applicable Scenarios: Kitchen under-cabinet light, bathroom vanity indirect lighting, balcony decorative light, supermarket shelf light, indoor places with regular water splashes, not suitable for long-term soaking or heavy rain outdoor exposure.
Option 3: IP67 Full Silicone Extrusion AC220V COB Strip (Fully Waterproof, Submersible Grade)
＊Structure: One-time integrated silicone extrusion molding technology, the entire COB circuit board is encapsulated inside high-purity food-grade transparent silicone through high-temperature extrusion production, seamless integral forming without gaps
＊Protection Rating: IP67, fully dustproof, resistant to temporary short-time water immersion and heavy rain washing
＊Core Superiorities:
Outstanding Waterproof & Anti-Corrosion Performance: Seamless silicone encapsulation prevents water, rain, dust, chemical vapor, salt fog and oil from penetrating the inner PCB. No glue gap failure problem existing in PE sleeve type, greatly extending service life in harsh environments.
Superior Light Transmittance & Uniformity: High light-transmitting silicone material reduces light loss effectively, retains the dot-free soft light characteristic of COB chips without yellowing after long-term use under sunlight.
Excellent Heat Dissipation & Anti-Aging: Silicone material features good thermal conductivity, timely export heat generated by dense COB chips to avoid overheating decay. Anti-UV, anti-yellowing formula silicone stays transparent even under long outdoor sunlight exposure, unlike cheap PVC sleeves that turn yellow and brittle within months.
Ultra High Flexibility & Tensile Resistance: Integral extruded silicone body can bend freely for curved installation, strong tensile strength, not easy to crack or peel off during transportation and construction.
Applicable Scenarios: Outdoor building outline lighting, garden landscape decoration, swimming pool surrounding light, billboard backlight, storefront exterior wall linear light, damp industrial workshop lighting, all semi-outdoor and outdoor exposed installation environments, can bear temporary short-term water soaking.
Shared General Specifications of IP20/IP65/IP67
1. Direct AC220V input, no extra power supply needed, easy wiring and construction, greatly reducing project installation cost and space occupation
2. COB dotless uniform light, high CRI options including Ra80, Ra90, Ra95 for commercial, retail and high-end decorative lighting
3. Multiple color temperature choices: 2700K warm white, 3000K soft warm white, 4000K natural white, 6000K cool white, single color red/green/blue/yellow optional
4. Standard cutting segments with clear cut marks for flexible length customization to match different project sizes
5. Low light decay, long service life up to 50,000 hours with stable constant current drive design
6. Flexible PCB base, bendable for curved, arc and irregular linear installation
7. Full compliance with CE, ROHS safety standards, safe mass export for global markets.
Selection Guidance for Customers
Choose IP20: Dry indoor projects with high brightness demand and budget control
Choose IP65 PE Sleeve: Indoor damp, splash-proof scenes with cost priority
Choose IP67 Silicone Extrusion: Outdoor exposed, rainproof, anti-corrosion and long-service-life demanding projects
Silicone Extrusion Process for AC220V COB LED Strips
As a professional manufacturer of high-voltage AC220V COB light strips, our IP67 fully waterproof COB strips adopt integrated one-piece silicone extrusion molding technology, which is the most advanced waterproof craft compared with IP65 PE sleeve wrapping and glue-dipping methods. Below is a full breakdown of raw material standards, complete production workflow, core technical highlights, process advantages and final product performance.
Premium Silicone Raw Material Formulation (Custom Formula for AC220V COB Strips)
We exclusively adopt high-transmittance fumed high-consistency silicone rubber (HCR) imported from top silicone brands, specially optimized for high-voltage LED strip extrusion:
Base silicone gum matched with high-purity fumed silica as reinforcing filler to boost tensile strength, tear resistance and light transmittance;
Add anti-UV, anti-yellowing masterbatch to avoid yellow discoloration under long-term outdoor sunlight exposure;
Add high-temperature vulcanizing agent, flame-retardant additive and anti-oxidant to adapt AC220V high-voltage working heat load;
No recycled PVC or cheap precipitated silicone mixed; all materials pass RoHS, REACH and low-smoke non-toxic standards.
Before extrusion, raw silicone compounds go through 3 closed mixing & open milling cycles, then multi-layer mesh filtration to eliminate tiny impurities, bubbles and foreign particles that may cause light spots or silicone cracking after molding.
Complete Step-by-Step Silicone Extrusion Production Workflow for AC220V COB Strips
Step 1: Pre-finished AC220V COB Strip Inspection (Front-End Preparation)
Only fully qualified bare AC220V COB PCB enters the extrusion line:
＊COB chips densely packaged on flexible copper PCB, built-in distributed constant-current high-voltage drive IC to stabilize 220V mains input, anti-flicker and anti-voltage drop for long runs;
＊100% lighting test, open-circuit & short-circuit screening to remove defective strips; surface dust, solder residue and static eliminated by ion air blower to prevent internal bubble defects after silicone encapsulation.
Step 2: Silicone Feeding & Plasticization in Cold-Feed Extruder
Filtered uniform silicone rubber strips are continuously fed into precision cold-feed single-screw extruder. Multi-section barrel temperature is strictly controlled at 120–170°C, rotating screw completes conveying, compression and homogenization to make silicone fully plasticized with stable fluidity and zero internal air pockets.
Digital pressure monitoring system keeps extrusion pressure stable at 0.8–4MPa to guarantee consistent silicone wall thickness around COB strip.
Step 3: Co-extrusion Molding –Core Step of Integrated Silicone Encapsulation
This is the core difference from PE sleeve semi-wrapping craft:
Custom dual-channel precision steel die is installed at extruder head. The qualified AC220V COB strip is pulled forward at constant linear speed, while molten transparent silicone is extruded simultaneously from the outer die cavity.
Silicone fully wraps every side of the COB PCB in one continuous forming pass, forming a seamless integral silicone shell with uniform wall thickness (1.2mm–2.5mm customizable). No assembly gaps, no separate inner tube filling glue process as PE sleeve type.
The die cross-section can be customized: flat rectangular, rounded square or oval profiles for different linear lighting installation demands.
Step 4: Continuous Hot Air Vulcanization (HAV Curing Tunnel)
Right after extrusion molding, the wrapped COB strip directly enters a 20–40m long multi-temperature zone hot air vulcanization oven with segmented temperature control from 160°C to 200°C.
High heat triggers cross-link vulcanization reaction inside silicone molecules, turning soft plasticized silicone into solid elastic rubber within continuous transmission. This permanent cross-link structure ensures silicone never melts, deforms or peels off under long-term high-temperature working of AC220V COB chips.
Transmission speed is linked with extruder output to guarantee full curing without under-vulcanization (sticky surface) or over-vulcanization (brittle silicone).
Step 5: Water Cooling & Shaping
Fully vulcanized hot silicone COB strip runs through circulating water cooling tank to rapidly lower surface temperature, lock dimensional stability and eliminate internal thermal stress, avoiding later bending deformation and cracking during construction.
Step 6: Secondary Quality Inspection & Post-Curing (High-Grade Outdoor Version Optional)
Visual full inspection: check silicone surface for bubbles, scratches, uneven thickness, breakage or offset PCB inside;
Lighting re-test under AC220V mains supply to confirm no chip damage during extrusion;
For high-end outdoor anti-salt fog projects, add secondary low-temperature post-curing oven processing to remove vulcanization by-products, further improve silicone anti-corrosion and insulation performance.
Step 7: Cutting, Sealing & Finished Product Packaging
Cut strips at standard pre-marked cutting points according to customer length requirements; both ends are sealed with matching silicone end caps to block capillary water penetration. Final spool winding, labeling and vacuum packaging for shipment.
Wire Options for AC220V High-Voltage COB Strips
Our AC220V silicone extruded / PE sleeve / IP20 bare COB strips support two wiring output solutions to match different installation scenarios: bare wire leads and pre-assembled plug power cords.
1. naked red/black Wire Output Version
＊Structure: Both ends of the light strip are reserved with exposed stripped copper wires, no plugs or connectors attached. The insulated outer sheath is stripped to expose pure copper conductors for direct hard wiring.
＊Features:
High flexibility for on-site construction; electricians can freely connect the strip to wall switches, junction boxes, terminal blocks or long-distance main power cables.
Save transportation and material costs without extra plug accessories, ideal for large engineering projects with centralized power distribution.
Suitable for concealed installation inside aluminum channels, wall grooves and ceiling slots where plugs cannot be hidden.
＊Application:
Commercial engineering projects, mall linear lighting, building outline lighting, long runs of continuous strip installation.
2. Pre-Assembled Plug Power Cord Version
＊Structure: Factory pre-soldered finished power cords with standard AC plugs at the strip ends. We offer customizable plug types for global markets: EU plug, UK plug, US plug, Australia plug, Chinese 2-pin/3-pin plug, etc.
＊Features:
Plug-and-play design, no professional wiring required. End users only need to insert the plug into a mains socket to light up the strip instantly.
Built-in reinforced solder joints between strip PCB and power cord to avoid loose contact after long-term bending.
Perfect for retail sales, household DIY decoration, temporary decorative lighting and small home renovation projects.
＊Application: Home background wall lighting, cabinet lighting, holiday decorative lights, retail consumer packaged goods.
