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The AZ HR cardboard tube range


The tube serves as a support for the winding and unwinding of paper. The manufacturing process of paper tubes and cores enables high-speed winding, unwinding and printing of heavy paper rolls.

Abzac’s technical approach has led to the development of a range of cardboard tubes designed to meet the specific requirements of the paper-making markets: 

  • Crush resistance: this enables the cardboard tube to withstand the weight of the wound material during winding and storage.
  • Dynamic load resistance: this is the capacity of the cardboard tube to withstand the variations in speed and weight of the rolls during winding and unwinding.
  • The E-modulus: this value serves to determine the critical speed as from which the tube starts to vibrate and resonate.

Abzac has its own research laboratory for the analysis, adjustment and control of all these parameters.

The manufacturing process allows the control and reproducibility of the geometric criteria (straightness, roundness) and of the resistance performance levels.

Customer advantages

  • Definition of the custom cardboard tube to match specifications.
  • Adaptation of resistance performance levels to match the requirements of the paper manufacturer, processor or printer.
  • Selection of raw materials to reduce environmental impact.


3” - Ø 76 th15UnHR
Ø-int mm 3"-76 mm 3"-76 mm 3"-76 mm 3"-76 mm
Ø-ext mm 4,19"-106,5 mm 4,19"-106,5 mm 4,19"-106,5 mm 4,19"-106,5 mm
Max. deflexion mm/ml 2 2 2 2
E-modulus N/mm2 2500 2800 3200 4000
Dynamic load-DaN/ml DaN/ml 1000 1200 1500 2000
Crush resistance N/100mm 3000 3500 4500 5500
Weight Kg/ml 3 3.2 3.7 4.15
Humidity % H2O 8 8 8 8

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