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Polyester-based Adhesive Tape for Electric Insulation No.31 Series

Used for outer/interlaminar insulation of transformers and coils.

Tape developed for outer/interlaminar insulation of transformers and coils. Nitto Denko has a wide lineup of backing thicknesses/colors; the tapes can be used for various applications.

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Features

  • Offers superior electrical insulation.
  • Offers superior dimension stability.
  • Offers superior heat resistance.
  • Narrow width processing is available.
  • Available in long lengths.
  • Good processability.

Structure

Properties

Product name Polyester adhesive tape
Product No. No.31B No.31C
Adhesive Acrylic
Backing thickness/Total thickness
[mm]
0.025/0.051 0.050/0.078 0.025/0.055 0.050/0.081
Backing thickness/Total thickness
[mil]
0.98/2.01 1.97/3.07 0.98/2.17 1.97/3.19
Standard length [m]
[Core Diameter(mm)]
50[75Φ]
Colors Transparent WhiteYellow, Red, Green, Blue, Black
Peeling strength
[oz/in]
25.97 29.33 25.97 35.1
Tensile strength
[oz/in]
567.41 937.67 480.85 1062.69
Peeling strength
[N/19mm]
5.4 6.1 5.4 7.3
Tensile strength
N/19m]
118 195 100 221
Elongation [%] 120 133 146 146
Breakdown voltage [kv] 6.2 9.2 7.5 11.9
Electrolytic corrosion factor 1.00
Product name Thermosetting Polyester
Product No. No.315
Adhesive Thermosetting rubber
Backing thickness/Total thickness
[mm]
0.025/0.060 0.050/0.085 0.025/0.060 0.050/0.085
Backing thickness/Total thickness
[mil]
0.984/2.36 1.97/3.35 0.984/2.36 1.97/3.35
Standard length [m]
[Core Diameter (mm)]
20[35Φ]/50[75Φ]
Color Transparent Yellow
Peeling strength
[oz/in]
58 70 58 70
Tensile strength
[oz/in]
480 942 480 942
Elongation[%] 110 130 110 130
Breakdown voltage [kv] 5.5 8.0 7.0 11.0
Electrolytic corrosion factor 1.00

Applications

  • Electrical insulation of transformers and coils.

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