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Self-Adhesive Enameled Flat Copper/Aluminum Wire from China Suppliers | Quality Factory Products 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 (for QQ/QQN and custom types) |
| Insulation Thickness – Thin Film | 0.06 – 0.11 mm |
| Insulation Thickness – 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.
Frequently Asked Questions
What is self-adhesive enameled flat wire and how does it differ from standard enameled wire?
Self-adhesive enameled flat wire features an additional self-adhesive coating on top of the standard insulation layer. When heated, this layer bonds the windings together without requiring external adhesives or varnish impregnation, making it ideal for compact and efficient coil assembly in transformers and reactors.
Which insulation types are available with a self-adhesive coating?
The QQ/QQN (120℃) type is the standard self-adhesive variant. Additionally, custom self-adhesive coatings can be applied to QZ, QZG, QZY, Q(ZY/XY), and QXY insulation categories upon request, covering temperature ratings from 130℃ up to 220℃.
What conductor materials are used, and what standards do they comply with?
Conductors are made from high-quality oxygen-free copper or electrical-grade aluminum rod. Both materials comply with the GB5584 series standards, ensuring excellent electrical conductivity and long-term mechanical stability in demanding applications.
What are the available conductor size ranges for this flat wire?
The conductor thickness (a) ranges from 0.80 mm to 5.60 mm, and the conductor width (b) ranges from 2.00 mm to 16.00 mm, with a maximum width-to-thickness ratio of 20:1. This wide range accommodates diverse winding design requirements.
What certifications does this product hold?
The self-adhesive enameled flat wire is manufactured under an ISO9001:2015 certified quality management system. Products have been independently tested and certified by SGS, UL, and CE, and self-adhesive performance is validated through rigorous adhesion testing protocols.
What breakdown voltage levels does this wire support?
The wire meets both Grade 1 (1000V) and Grade 2 (2000V) breakdown voltage standards. These ratings are maintained after the self-adhesive bonding process, ensuring reliable electrical insulation and safety in high-density transformer and reactor applications.