Stuart Sharp, Senior Researcher, Fisher International
After testing the individual pulps and understanding the specific fiber characteristics, there is a need to understand the interaction of the fiber under study with other fibers in “real scenario” situations. This ensures that there are no surprises with respect to inter-fiber bonding. This study shows the paper test results of wheat straw pulp with a typical softwood and OCC fiber blends as would be found on most paper machines in a daily production mode. As expected, 100% softwood has the highest tear index, but the wheat straw blend has an acceptable tensile value.
In the field of board packaging, product development personnel need to understand the compression strength and the bending strength.
Figures in this analysis show this for selected pulps. The SFT test results demonstrate that the wheat straw pulp produced via the Phoenix Process is superior to OCC and to hardwood pulps for these tests. This gives the product technologist room to develop superior performing cost-effective products for their customers.
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