Heat resistant high temperature diamond dotted paper represents a high-end upgraded variant of rhombus dotted adhesive paper, developed exclusively for Class H and Class C high-temperature working conditions. Ordinary dotted adhesive paper uses conventional epoxy resin with a maximum temperature resistance of approximately 155℃, where resin carbonizes and loses adhesion under elevated temperatures. The high-temperature resistant dotted paper adopts modified high-temperature resin formulas paired with aramid paper or polyimide film substrates to deliver overall temperature resistance up to 220℃, with resin remaining non-carbonized and retaining stable bonding force under long-term high-temperature operation. It serves as the only viable solution for outdoor transformers operating in high-temperature regions such as the Middle East and high-temperature equipment in metallurgy and glass industries, where standard dotted paper suffers premature failure.
A high-temperature dry-type transformer manufacturer exports products to the Middle East, where ambient temperatures frequently exceed 50℃ alongside transformer self-heating pushing insulation layer temperatures to 180℃. Their previously used standard dotted adhesive paper exhibited blackened, brittle resin dots with drastically reduced bonding force after three months of operation. We sent samples of high-temperature resistant dotted adhesive paper with aramid paper substrates and high-temperature resin formulas. After one full year of real transformer operation testing, disassembled inspection revealed pale yellow resin dots with nearly unchanged adhesion strength. They now exclusively adopt our product for all high-temperature transformers with stable annual procurement of 3 tons. Heat resistant high temperature diamond dotted paper carries high technical barriers with few manufacturers capable of stable mass production, serving distributors as a competitive differentiation tool against industry peers.
Specification Parameters
|
Parameter Item |
Technical Index |
|
Finished Thickness |
0.05～0.4mm |
|
Maximum Width |
1600mm |
|
Minimum Slitting Width |
6mm |
|
Temperature Resistance Class |
Class H (180℃)～Class C (220℃) |
|
High-temperature Peel Strength Retention Rate (200℃/168h) |
≥85% |
|
Resin Dot Height |
50～100μm |
Application Fields
- Interlayer bonding of Class H and Class C dry-type transformers
- Insulation fixation of rail transit traction transformers
- Coil bonding of wind power transformers
- High-temperature industrial furnace transformers
- All dot bonding scenarios requiring temperature resistance above 200℃
Qualification Certifications
Our heat resistant high temperature diamond dotted paper has undergone high-temperature aging and flame retardancy testing by authoritative testing institutions, with all indicators meeting national standards. The company holds ISO9001 quality management system certification with complete product test reports available for customer review. Environmentally, products comply with RoHS and REACH directives free of restricted substances, enabling seamless export to Europe, North America and all global regions. Flame retardancy reaches UL94 V0 grade with full glow wire test compliance. We support third-party factory inspections and sample testing by designated institutions, and can coordinate dedicated testing and certification services for projects requiring special certifications.
After-sales Service
As a technical product, high-temperature resistant dotted adhesive paper requires professional guidance for model selection and curing processes for most customers. We deliver full-process technical services: pre-sales engineers assess your working temperature, substrate types and curing equipment to recommend optimal substrates and resin formulas with full follow-up during sample testing and parameter adjustments as needed. After bulk supply commencement, we conduct regular follow-up visits to monitor real-world performance and assist curing process optimization. During production, we proactively share manufacturing progress photos and videos without follow-up reminders required. We respond within 8 hours and deliver solutions within 24 hours for any issues, assigning dedicated staff to track each customer and establish exclusive product files for targeted service.
FAQ
Hot Tags: heat resistant high temperature diamond dotted paper, China heat resistant high temperature diamond dotted paper manufacturers, suppliers, factory, carbon loaded crepe, conformable crepe paper, Cord Wrapper For Appliances, high dielectric paper, High Temperature Diamond Dotted Paper, thermal stable dotted paper
