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Reducing Power Consumption and Increasing Lifetime due to a New Material in Forming Fabrics.

Authors Ged Leigh, Strategic Product Manager (Forming), Heimbach GmbH & Co. KG

Currently, the most common material combination in use for the machineside wefts (CMD) in forming fabric designs is Polyester and Polyamide. The main advantages and disadvantages of these materials are described in Figure 1. Forming fabric manufacturers have looked to improve the abrasion resistance of forming fabrics by increasing the amount of Polyamide on the machineside. Whilst this approach addresses the abrasion resistance the negative aspect is a (potential) increase in the power consumption due to the increased coefficient of friction of Polyamide compared to Polyester. Additionally, caused by the high moisture uptake of Polyamide, an increase in edge curl as well as a decrease in fabric dimensional stability are likely.

Therefore the need to develop a new material, which would utilize the advantages of Polyester and Polyamide without any of the disadvantages, was the main design driver. As a result of extensive laboratory analysis and fieled trials Heimbach has introduced a unique material (DURALON) into its PRIMOBOND SSB range of forming fabrics. Duralon fulfills the key criteria of today's (and tomorrow's) forming fabrics.

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