Pneumatic Splicing Systems for Yarn Joining
topic
Pneumatic yarn splicing uses compressed air in a splice chamber to untwist and intermingle the fibre ends of the two yarn ends being joined by turbulent airflow at 4 to 8 bar that creates a tapered entanglement splice of 15 to 30 millimetre length with tensile strength of 70 to 90 percent of the original yarn, replacing knotted joins that would cause needle breakage in knitting or reed damage in weaving from their larger cross-section.
Role
Creates yarn joins during winding that are sufficiently fine and strong to pass through knitting needles and reed dents without causing machine stops, with splice quality being the primary quality output of modern winding machines that determines the rate of downstream processing stops from join-related failures, with splice strength and diameter being the two critical parameters that must simultaneously meet the 70 to 90 percent strength and maximum 130 percent diameter specifications for knitting applications.