RF dryers by Strayfield to ensure uniform drying with enhanced productivity and quality of fiberglass rovings

Radio Frequency (RF) Drying in Fiber glass

RF drying is a non-contact drying process that uses electromagnetic energy to heat the material. The process involves exposing the material to high-frequency electric fields that cause the water molecules in the material to vibrate and generate heat. The heat generated by the water molecules causes the moisture in the material to evaporate, resulting in rapid and efficient drying.

Advantages of RF Drying in Fiber glass

The application of RF drying in fiberglass has several advantages over traditional drying methods. Firstly, RF drying is a faster and more efficient process compared to hot air or infrared radiation. This is because RF energy can penetrate the material deeply without relying on the thermal properties of fiber glass, resulting in faster and more uniform heating. Secondly, RF drying is a non-contact process that eliminates the risk of damage to the material due to direct contact with hot surfaces. Thirdly, RF drying is an energy-efficient process that can result in significant cost savings compared to traditional drying methods. 

Better Control Over the Drying Process

In addition to these advantages, RF drying also offers better control over the drying process. The process can be easily adjusted to achieve the desired level of moisture content in the material (to as low as 0.1%). This is particularly useful in the fiberglass industry, where the moisture content of the material can have a significant impact on its mechanical properties.

Transformational Fibre Glass RF Drying Solution for Valmieras Stikla Skiedra

Strayfield’s Radio Frequency Dryers have proven to be a game-changing solution for VALMIERAS STIKLA SKIEDRA, exemplifying innovation in drying technology. Read how Strayfield’s cutting-edge solutions can transform operational efficiency while maintaining the highest standards of product quality.

Controlled moisture below 0.1% throughout the product mass:

RF drying allows for precise control of moisture content during the drying process. By utilizing radio frequency energy, the moisture within the fiberglass can be evenly distributed and reduced to extremely low levels, typically below 1%. This controlled moisture level ensures consistent product quality, as excessive moisture can lead to issues such as warping & reduced strength.

Eliminate yellowing of the product due to overheating and overexposure to heat:

One common challenge in drying fiberglass is the risk of yellowing, which occurs when the material is subjected to excessive heat or prolonged exposure to heat. RF drying helps mitigate this issue by providing a rapid and controlled drying environment. The radio frequency energy generates heat directly within the fiberglass, minimizing the risk of overheating the material and preventing yellowing. This ensures that the fiberglass retains its original color and appearance.

Achieve rapid drying within 3-4 hours of process time:

RF drying significantly reduces the drying time compared to conventional drying methods. The radio frequency energy quickly heats the fiberglass from within, enabling the rapid evaporation of moisture. This accelerated drying process allows for a shorter overall production cycle, resulting in increased productivity and faster turnaround times. With RF drying, fiberglass products can typically be dried within 3-4 hours, depending on the thickness and size of the materials.

Continuous line drying:

RF drying systems can be designed for continuous line drying, offering a seamless and uninterrupted drying process. Fiberglass products can be conveyed through the RF drying chamber on a continuous conveyor belt or other automated systems, ensuring a constant flow of materials. This continuous line drying capability enhances production efficiency, as there is no need to pause or halt the drying process between batches. It enables manufacturers to achieve high throughput and maximize their production capacity.

Technology Advantages

  • Controlled moisture below 0.1% throughout the product mass
  • Eliminate yellowing of product due to overheating and over exposure to heat
  • Achieve rapid drying within 3-4 hours of process time
  • Continuous line drying

Strayfield Advantages

  • Energy efficiency: Highest energy efficiency in the industry
  • Filtered Oscillator design: Strayfield is the only manufacturer with a filtered oscillator design that adheres to EN55011 and is truly CE compliant
  • Double electrode balanced output: Isolated energy in the area of application that minimises the return current paths through the structure of the machine, thereby reducing RF emissions and improving efficiency
  • Automatically adjusting electrodes that ensure controlled power and unmatched arc suppression
  • Flat electrodes: Lower power density as opposed to rod electrodes, ensuring uniform and gentle drying
  • Dual Extraction Design

Transform your fiberglass drying process with Strayfield’s RF Dryers.
Enjoy consistent moisture control below 1%, eliminate yellowing, and achieve rapid drying times.

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