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Photo of Electricity Distribution Pole with Transformers against Blue Sky with Clouds
Products

How Electrification & Grid Expansion Are Driving Demand for Transformer Insulation: Electrical Insulation Paper

In the two decades between 2000 and 2023, global demand for electricity more than doubled. That growth is not decelerating. Demand for power is rising approximately four percent annually, with...
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Copaco® 125 vs. Standard Rag Paper: What’s the Difference?

At Cottrell Paper Company, we know that our customers have a wide variety of needs. We produce products with excellent performance designed for specific applications. That’s why we offer insulation...
Large copper bus bars of high voltage power transformer covered with special insulation paper in workshop extreme close view
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Electrical Insulation Solutions for Utility and Renewable Energy Projects

Since Cottrell Paper Company opened its doors a century ago, the commitment to sustainability and land stewardship has never wavered. Our manufacturing mill runs on hydroelectric power drawn from the...
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Try Our Estimate Calculator: How to Build a Custom Quote With Cottrell

Over four generations, Cottrell Paper has built its reputation on quality, exceptional customer service, and environmental sustainability. Our management system earned International Organization for Standardization 9001 certification. ISO 9001 covers...
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How COPACO Electrical Paper Powers Modern Transformer Design

Transformers drive production across countless industries. For manufacturers who depend on them, the choice of transformer insulation materials directly affects product performance, equipment longevity, and worker safety. Insulation protects internal...
Three phase transformer during manufacturing while the tap leads being connected to the HT (high tension) windings leads by oxy-fuel gas welding
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COPACO Paper Products Deliver Where It Counts: Electrical Insulation Built for the Long Haul

COPACO paper products align with Cottrell Paper Company’s dual commitment to manufacturing precision and environmental responsibility. COPACO materials are manufactured from high-quality cotton cuttings that undergo thorough cleaning and refinement...
Products

Transformer Insulation Materials: Built to Last, Ready When You Need Them

Industries that depend on transformers understand a fundamental truth: proper insulation isn’t optional—it’s the foundation of safe, efficient operations. Insulation protects internal transformer components from electrical currents and voltage surges...
Truck loading cotton4
About Products

Why Cotton is the Industry Standard for Electrical Insulation Paper

The use of cotton in electrical applications can be traced back to the 1920s. As the director of H. Weidman Limited, Hans Tschudi-Faude developed a type of pressboard suitable for...
About Products

From Cotton Waste to Critical Components: The Science Behind Sustainable Electrical Paper

To help combat climate change, individual consumers must be attentive in regard to their purchases and consumption. Manufacturers need to take it a step further and consider not only the...
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Why Electrical Insulation Matters: Protecting Equipment and Extending Lifespan

We know that Benjamin Franklin first experimented with electricity in 1752. It wasn’t until 1879 that Thomas Edison invented the light bulb, and by the mid-20th century, electricity became a...
Copaco Paper
Products

Copaco® vs. Traditional Transformer and Small Motors: What’s the Difference?

Copaco® insulation is an engineered paper solution designed to meet the changing and persistent demands of modern electrical systems. Here’s a Copaco® vs traditional insulation comparison and why it’s the...