Effect of Delivery Speed and Roller Pressure of Slitting Machine on Shrinkage of a Single Lacoste Fabric
Md. Rafiqul Islam, Md. Zahid Hasan, Nafis Abir
Email: md.zahid.tex@gmail.com
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Abstract
The main goal of this study to determine the impact of variable delivery speed and squeezing roller pressure of the slitting machine on shrinkage of the finished single lacoste fabric, particularly length wise shrinkage. Because it is difficult to control length wise shrinkage and shrinkage has a significant effect on final products. To control shrinkage, different combinations of parameters can be set regarding yarn, stitch length, fabric structure, machine gauge, dyeing, finishing, etc. In this study, focus is given on two such weak zones of a slitting machine where wet fabric gets maximum stretch; firstly from de-twister to slitting knife and secondly the padder (both squeezing and stenter). If it is possible to minimize the stretch in these two points then the length wise shrinkage will be less. To determine the impact, the slitting machine was run in two combinations. In combination 1, the delivery speed was 60 meter/minute with roller pressure 3 bar and in combination 2, delivery speed 80 meter/minute with roller pressure 5 bar was maintained. It was found that combination 1 provides less shrinkage. This convenience continued in drying & compacting machine too, 3 bar and 5 bar pressure was applied and 3 bar pressure was found effective to decrease the fabric shrinkage.