Paper Tubing

Materials

Our paper tubes are available in a wide variety of materials, including:

• Dielectric Kraft paper
• Vulcanized fiber (fishpaper)
• Nomex®
• Kraft
• Bond
• Parchment
• Phenolic impregnated kraft
• CeQUIN® (ParaQUIN ENV)/ CorQUIN® (Paratherm ENV)

We also offer:

• Decorative papers (in glossy or flat colors)
• Foil liners or outer greaseproof papers
• Cotton liners
• Crepe Kraft
• Wraps
• Plastic films
• Greaseproof liners
• Cellulose acetate
• Glassine

Fabrications

Our paper tube fabrications include:

• Beading
• Indents
• Rolled, conical or flat-formed ends
• Punching
• Slitting
• Notching
• Flaring
• Precision-cut lengths

We also offer a unique tube adaptation process — called “bow” — for square and rectangular tubes. Bow tubes have convex sides, meaning the sidewalls are curved slightly away from the center of the tube. Four different degrees of bow are available from us:

• Paraformed – for flat sidewalls and flat inside corners (exclusive to us)
• Very slight – approximately .020″ of bow per inch of sidewall, per side; provides some degree of added strength
• Slight – approximately .030″ of bow per inch of sidewall, per side; adds strength
• Regular – approximately .040″ of bow per inch of sidewall, per side; provides maximum strength and resistance to collapse

Bow tubes are best used when the tube must be wrapped tightly with magnetic wire during a transformer manufacturer’s winding process. Generally, bow is applied to Kraft paper and Kraft paper combinations only. We can, however, force bow in square and rectangular tubes made from other materials.