Tomoegawa Co., Ltd.
Japanese specialty papermaker producing high-purity electrical insulating paper, thermally upgraded paper, and dielectric barrier sheets for power transformers and cables.
Product categories
Pressboard / insulation materials
Related components
Company record
| Company | Tomoegawa Co., Ltd. (Tomoegawa Group) |
|---|---|
| Role | PRIMARY_MILL_MANUFACTURER |
| Location | Tokyo, Tokyo, Japan |
| Accessory categories | Pressboard / insulation materials |
| Product family | Ultra-High Purity Electrical Kraft Paper & Aramid Heat-Resistant Paper |
| Product / Trade names | Tomoegawa Electrical Insulating Paper, Heat Resistant Transformer Paper |
| Thermal insulation class | 105°C & 120°C |
| Base thickness range | 0.03 mm – 0.25 mm |
| Documented grades | JIS C 2307, IEC 60554 |
| Thickness / dimensions | 0.03 - 0.50 mm |
| Technical standards | JIS C 2301, IEC 60554 |
| Primary evidence citation | Tomoegawa official technical catalog |
| Source tier | TIER A |
| Provenance | Verified · Source: official website · checked 14 Sept 2026 |
Directory entries are informational supplier listings and do not imply verification, endorsement or commercial affiliation. Verification reflects a website check on the date recorded; always carry out your own due diligence before a commercial decision.
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