APA Composite Paper
APA Composite Paper - Image 2
APA Composite Paper - Image 3

APA Composite Paper

APA composite paper is a high-performance, triple-layer insulation material composed of aramid paper + PET film + aramid paper. This sandwich structure offers superior dielectric strength, mechanical flexibility, and thermal resistance, making it ideal for demanding electrical insulation applications in motors, transformers, and EV battery systems.

Features:

  • Triple-Layer Protection: Combines the thermal endurance of aramid paper with the mechanical strength and dimensional stability of PET film.
  • High Dielectric Strength: Ensures reliable insulation in high-voltage environments and compact winding designs.
  • Thermal Class F to H (155–180°C): Withstands continuous high-temperature exposure without degradation.
  • Excellent Flexibility: Ideal for automated slot insertion and tight winding applications.
  • Moisture & Chemical Resistance: Maintains insulation integrity even in harsh operating conditions.

Applications:

Slot and phase insulation in electric motors, Interlayer insulation in low and medium voltage transformers, Die-cut insulation components for EV battery modules, Wrapping and liner materials for coils and windings, Applications requiring both mechanical strength and thermal performance.

Additional Documents:

APA Composite Paper (TDS)

Adhesive Tapes Selection Guide

Category:

Technical data

Nominal thickness [mm]  0.13 0.14 0.17 0.19 0.21
Thickness deviations[%] ±15
Ration [g/m²] 136 156 191 226 221
Nominal thickness of the film
[mm]		 0.04 0.05 0.075 0.1 0.125
Aramid paper nominal thickness [mm] 0.04 0.04 0.04 0.04 0.04
Breakdown voltage [KV] Do not bend ≥7 ≥9 ≥11 ≥12 ≥14
After bending ≥6 ≥8 ≥10 ≥11 ≥12
Tensile Strength[N/10mm] MD ≥100
TD ≥70		 MD≥ 120
TD≥  90		 MD≥ 160
TD≥ 130		 MD≥ 190
TD≥ 160		 MD≥ 220
TD≥ 190
Elongation At Break[%] MD≥ 15
TD≥ 20		 MD≥ 20
TD≥ 20
Dielectric strength[KV] ≥6 ≥7 ≥9 ≥11 ≥14
Normal adhesion No layering
Hot adhesion (220±2) °C, 10min No delamination, no foaming, no glue flowing
Long-term heat resistance[℃] 155-180

Legal Disclaimer

The values given are typical values, and do not constitute a specification. We recommend testing the suitability of the self-adhesive tape for the designated application or use. Please contact us or e-mail info@ysdiecut.com to determine product availability.

✔️ OEM: Delivers tailor-made adhesive tape products and die-cut components under your brand specifications—designed to integrate seamlessly into your end products.

✔️ ODM: Tape ODM (Original Design Manufacturing) refers to a service model where designs, develops, and manufactures ready-to-sell adhesive tape products that can be branded and marketed under your own label.

Tapes Manufacturer
Yousan New Materials

Storage
It is recommended to store in a clean and dry place, away from direct sunlight to prevent damage to the packaging, and to avoid storing with volatile solvents. Store at 25±5°C and humidity at 50±5%.

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