Determining Yarn Consumption in a Loop

Abstract

Basic equations are given for calculating yarn consumption for machine lo.op formation. The equations are derived taking into account basic machine design parameters, such as: machine gauge, sinking depth, needle hook thickness, sinker thickness and the amount of space between the sinker and the needle. The equations are also given for calculating yarn consumption in knitted fabric unraveling. The third group of equations given describe yarn consumption in a loop based upon the knitted fabric structural parameters, such as course height, wale spacing, yarn and knitted fabric thickness. These equations describe the structure of grey and finished knitted fabric. Experimental part of the paper gives the results of determining yarn consumption in a loop, using the above equations. The amount of yarn needed to form a loop in knitting zone is compared to that in a fabric, defined in various ways. It can be concluded that different yarn consumption in a loop is defined by the method employed. Theoretical equations for yarn consumption in a finished fabric cannot be employed for every fabric structure.