SIPU Green Coil Manufacturing Solution

Overview

Stringent global environmental regulations are being implemented across the electronics industry. EU RoHS and REACH directives set strict limits on hazardous substances contained in raw materials for coil production. Many coil manufacturers face seized shipments and lost overseas orders simply due to non-compliant enameled wire, solder materials or wrapping tape.

Xiamen SIPU Mechanical (SIPU) supplies a full range of eco-friendly supporting materials for coil automation equipment, including RoHS-compliant enameled wire, lead-free solder and halogen-free flame-retardant wrapping tape. We can provide third-party test reports for all consumables, fully meeting RoHS and REACH international environmental standards. Equipped with SIPU’s full set of automated production machines, manufacturers can easily pass customer factory audits and avoid export compliance risks, building low-waste, low-emission and highly compliant intelligent coil production lines.

With rising export demands for automotive electronics, new energy relays and home appliance coils, overseas buyers will strictly audit the environmental compliance of all raw materials used on production lines during factory inspections. Three common hidden compliance risks widely exist in ordinary workshops: halogen excess in enameled wire, lead content in solder bars/wires, and hazardous substances in coil wrapping tape. Any non-compliant material will disqualify finished coils for export. To tackle industry pain points, SIPU adopts standardized eco-friendly materials for both supporting consumables and machine body panels, delivering one-stop solutions for high-end green manufacturing.

1. Halogen-Free Eco Enameled Wire for High-Precision Coil Mass Production

Coils are the core of electromagnetic devices, and the environmental grade of enameled wire directly determines export compliance of finished coils. Our high-standard eco enameled wire adopts halogen-free insulating coating free of restricted substances such as polybrominated biphenyls and heavy metals, fully complying with RoHS and REACH standards. It features stable temperature resistance with grades ranging from 130℃ to 180℃, and avoids breakage for ultra-fine wires, perfectly matching SIPU's 32-spindle winding machines and automatic relay coil production lines.

Coils wound with our eco wire can be exported directly to mainstream markets including Europe, America and Southeast Asia without repeated hazardous substance inspection. The uniform insulating layer reduces winding rejection rate by 15–30%, cutting wire waste and production scrap while balancing green production and cost control. Complete RoHS certificates are available for all enameled wire for factory audit verification.

RoHS Wire

Latching coil

2. Lead-Free Eco Solder to Reduce Slag Pollution, Compatible with SIPU Soldering Equipment

Pin/Terminal tinning is a critical environmentally controlled process in coil production. Traditional leaded solder generates toxic fumes and excessive tin slag, causing material waste and workshop pollution. SIPU supplies standard lead-free solder wire and bars (Sn99.3/Cu0.7), fully complying with international lead-free soldering norms. This solder oxidizes far slower than ordinary alternatives, cutting tin slag output by 20–40%. It works seamlessly with SIPU low-oxidation sealed solder pots and automatic soldering machines to realize low-waste, low-pollution soldering.

Our eco solder delivers smooth, uniform solder joints free of cold solder, missing solder or bridging, satisfying strict technical standards for automotive and new energy coils. It cuts workshop soldering fumes by 25–40% to improve working environments and help factories pass environmental audits. All solder materials pass RoHS hazardous substance testing with no compliance barriers for EU and North American exports.

Tin wire

Tin bar

Soldered coil

Solder pot

3. Eco Flame-Retardant Wrapping Tape for Compliant Coil Insulation

For post-winding taping processes matching SIPU automatic taping machines, we supply premium halogen-free flame-retardant insulating tape. Free of halogen and heavy metals, it meets RoHS standards with stable adhesion, high temperature resistance and superior insulation. It tightly wraps coils without peeling or cracking, lifting material utilization by 10–20% versus ordinary tape, ideal for insulation of relay, new energy and precision electromagnetic coils.

Low-quality tape releases toxic gas under high temperatures and suffers insulation failure or aging detachment, leading to failed finished product tests. SIPU eco wrapping tape features stable performance and full compliance, with complete material test reports available. It satisfies both insulation and environmental export requirements for high-end export coil production lines.

4. Eco Materials & Energy-Saving Machines to Build a Complete Green Coil Production System

Eco-friendly raw materials alone cannot achieve full-process low-carbon manufacturing. SIPU integrates our full eco consumable range with automated equipment processes to form a closed-loop green manufacturing system that minimizes material loss and workshop pollution:

· High-precision multi-spindle winding machines: Intelligent tension control reduces wire breakage by 15–30% to cut enameled wire waste;

· Sealed low-oxidation solder pots: Suppress high-temperature oxidation of solder, lowering tin slag waste by 20–40%;

· Automatic taping machines: Precise stable tape feeding boosts tape utilization by 10–20% and reduces waste;

· Low-formaldehyde machine frames: All winding, taping and soldering machine frames and panels adopt low-formaldehyde eco boards with E1-level VOC emission standards, cutting overall machine energy consumption by 10–20% versus traditional equipment for energy-saving green operation.

This integrated solution fully meets export audit standards for finished coils, lowering long-term consumable costs and scrap disposal expenses to deliver three core values: export compliance, eco-friendly production and cost & efficiency optimization.

5. Typical Application Scenarios

• Automotive Electronics: Seat solenoid coils, new energy relay coils

• Home Appliance Electromagnetics: Transformers, induction coils

• Industrial Control: Mini signal relays, contactor coils

• New Energy: Charging pile & energy storage device coils

6. FAQ

Q1: What production scenarios suit your eco materials and machines? 

A1: They cover mass production lines for automotive electronics, new energy, home appliances and industrial control coils. Custom solutions can be developed based on your product technology and capacity requirements.

Q2: What is the minimum order quantity for machines? 

A2: Single machine orders are accepted. Configurations can be flexibly matched according to workshop scale and production demands.

Q3: What is the standard lead time? 

A3: Standard machines take 30–40 working days. Lead times for customized lines will be assessed based on specific configurations and technical requirements.

Q4: What is the machine warranty policy? 

A4: 1-year full machine warranty. We provide lifelong remote video technical support and fast spare parts delivery for overseas customers to guarantee stable machine operation.

7. Request Quotation & Custom Solutions

Xiamen SIPU Mechanical provides integrated customized solutions including eco enameled wire, lead-free solder, eco wrapping tape and low-formaldehyde automated machines, tailored for mass production of relays, automotive electronics and new energy coils, helping factories build compliant, efficient and intelligent green production lines.

Get in touch now

Request detailed quotation – share your product requirements for customized plans and full quotations

Email: sales@sipuglobal.com

WhatsApp / WeChat: +86-180 6910 1772