Thread Guides

The choice of thread guides for textile machinery has always been a critical part of cost effective fiber processing.

fiber-optic-filament-winding-guides-2With todays’ extremely fast production speeds, synthetic fibers and abrasive high-wearing technical yarns have led to ever-higher demands on thread guides. It is common knowledge in this industry that a textile machine which is mechanically sound can undergo a drastic reduction in performance due to thread guides made from unsuitable ceramics. Lint buildups commonly known as “snow” form on thread guides and the resulting high friction values lead to a reduction in process efficiency. Choosing the right ceramic material is based on the following:

  • Yarn or thread type
  • Working angle of the yarn
  • Thread count
  • Number of filaments in the yarn
  • Yarn or thread speed
  • Pre-guide tension
  • Length of guide contact surface
  • Spin finish
  • Environment (temperature, humidity, etc.)
  • Static electricity buildup

Applications also play a major role in the guide material selection process. We offer our guides in three basic materials:

  • High alumina porcelain (with engineered glazed surfaces)
  • Titanium dioxide (conductive & non-conductive)
  • Aluminum oxide (polished or glazed surfaces)

Requirements for Thread Guides

Some of the most important properties a thread guide has to meet are:

  • Wear resistance
  • Frictional characteristics of the guide surface
  • Chemical resistance
  • Fracture strength
  • Surface structure (not to damage the yarn)
  • Corrosion resistance Commonly used ceramic materials are corrosion resistant to most chemicals and are thermally stable.