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Self-Adhesive Enameled Flat Copper/Aluminum Wire - Quality Factory Suppliers from China for Transformers and Coils
Product Information
Equipped with a reliable self-adhesive layer, this enameled flat wire is fabricated from high-quality oxygen-free copper or electrical aluminum rod, processed through drawing, extrusion, and special adhesive coating. It is designed for windings that require stable fixation without additional adhesives, such as high-density transformers, precision reactors, and electronic coils. Based on insulating paint and self-adhesive properties, it covers six core categories, including specialized self-adhesive variants:
- QQ/QQN (120℃): Polyvinyl Acetal / Self-adhesive Polyvinyl Acetal – core self-adhesive type with reinforced adhesion via heating
- QZ (130℃): Polyester – non-self-adhesive base type (optional self-adhesive coating)
- QZG (155℃): Modified Polyester – non-self-adhesive (custom self-adhesive available)
- QZY (180℃): Polyester Imide – non-self-adhesive (custom self-adhesive available)
- Q(ZY/XY) (200℃): Composite Layer – non-self-adhesive (custom self-adhesive available)
- QXY (220℃): Polyamide Imide – non-self-adhesive (custom self-adhesive available)
Key Specifications
Conductor Thickness (a)
0.80 – 5.60 mm
Conductor Width (b)
2.00 – 16.00 mm
Conductor Width Ratio
20 : 1
Self-Adhesive Layer Thickness
0.03 – 0.06 mm
Insulation – Thin Film
0.06 – 0.11 mm
Insulation – Thick Film
0.12 – 0.17 mm
Detail Shot
Self-Adhesive & Performance Advantages
- 🔥 Self-adhesive layer (QQ/QQN) forms strong bonds when heated, simplifying winding assembly and reducing production time.
- ⚡ Conductors (copper/aluminum) comply with GB5584 series standards, ensuring excellent conductivity and mechanical stability.
- 🛡️ Insulation layers retain their original properties (e.g., heat resistance, solvent resistance) while adding adhesion functionality.
- ✅ Breakdown voltage meets Grade 1 (1000V) and Grade 2 (2000V) standards, ensuring electrical safety after adhesion.
- 🏭 Hengte Electric is a professional manufacturer of self-adhesive enameled wires, holding ISO9001:2015 certification. Products have passed SGS, UL, and CE tests, with self-adhesive performance validated by strict adhesion tests. We offer both standard self-adhesive QQ/QQN and custom self-adhesive coatings for other insulation categories to meet specific winding requirements.
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Frequently Asked Questions
Q
What is a self-adhesive enameled flat wire and how does it differ from standard enameled wire?
A self-adhesive enameled flat wire has an additional self-adhesive coating applied over the standard insulation layer. When heated, this layer activates and bonds adjacent wire turns together without requiring external adhesives or varnish impregnation, significantly simplifying the winding process and improving coil rigidity compared to standard enameled wire.
Q
What temperature is required to activate the self-adhesive layer?
The self-adhesive layer (QQ/QQN type, rated at 120℃) is typically activated by heating the wound coil to around 120–150℃ using an oven or by passing a short-duration current through the winding. The specific activation temperature and duration depend on the wire gauge and winding configuration.
Q
Can self-adhesive coatings be applied to insulation types other than QQ/QQN?
Yes. While QQ/QQN is the standard self-adhesive type, custom self-adhesive coatings are available for QZ, QZG, QZY, Q(ZY/XY), and QXY insulation categories. This allows customers to combine higher thermal ratings (up to 220℃) with the convenience of self-adhesive bonding for specialized applications.
Q
What conductor materials are available, and what standards do they meet?
Both oxygen-free copper and electrical-grade aluminum conductors are available. All conductors comply with the GB5584 series standards, which govern the chemical composition, electrical resistivity, and mechanical properties of conductor materials, ensuring consistent performance and reliability.
Q
What are the typical applications for self-adhesive enameled flat wire?
Self-adhesive enameled flat wire is widely used in high-density transformers, precision reactors, electronic coils, inductors, and motor windings where stable coil fixation is critical. Its ability to bond without additional adhesives makes it ideal for compact, high-performance electromagnetic components in power electronics and industrial equipment.
Q
What quality certifications does the product hold, and what voltage safety standards are met?
The products are manufactured under ISO 9001:2015 quality management and have been tested and certified by SGS, UL, and CE. In terms of electrical safety, the insulation breakdown voltage meets Grade 1 (1000V) and Grade 2 (2000V) standards, ensuring reliable dielectric performance even after the self-adhesive bonding process is completed.