Our paper tubing capabilities are as extensive as they come.
The materials we use include ...
- dielectric Kraft paper
- vulcanized fiber (fish paper)
We also offer ...
- decorative papers (in glossy or flat colors)
- foil liners or outer greaseproof papers
- cotton liners
- crepe Kraft
- plastic films
- greaseproof liners
- cellulose acetate
Some of our paper tubes are made in material combinations.
Printing and striping for product identification purposes are optional.
Our paper tube fabrications include ...
- rolled, conical, or flat-formed ends
- 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 to Kraft paper and Kraft paper combinations only. We can, however, force bow in square and rectangular tubes made from other materials.
For more information on our paper tubing capabilities, contact PPG.