Lubrication System

A reduction in the frictional coefficients of the various elements in contact with the yarn enables the yarn take-up speeds to be increased. The application of lubricating/ softening agents smoothes the yarns and prevents wear, dust and fibre fly from developing. With the Constant-Lubritwist, the lubricant is continuously applied to the yarn directly upstream of the inlet into the spindle during the twisting process. In this "in-line system, the lubricant film remains on the surface of the yarn, enabling it better to withstand the stresses of the processes which immediately follow.
Replaceable inlet rings determine the length of yarn contact with the moistening element and the specific quantity of lubricant applied.
A lubricant refilling unit allows the reservoir at the spindle to be efficiently replenished.
Lubricated yarn offers substantially improved running properties in subsequent processes such as warping, sectional warping, weaving, and the different knitting processes which may be applied.

The porous moistening element is partially immersed in the lubricant, and this is then transported by capillary action to the area of contact with the untwisted yarn. The yarn passing over it absorbs a certain quantity of lubricant. The necessary dosage is controlled by special metering discs which determine the size of the contact zone between yarn and moistening element. The reservoir is sealed against external air pressure. The negative pressure within the reservoir which regulates the rate of application is reduced in proportion to the liquid level with increasing lubricant consumption. The balance between the low pressure above the liquid level and the hydrostatic pressure of the raised liquid column ensures constant supply of the lubricant to the contact zone irrespective of the level in the reservoir.