7—APPARATUS FOR MANUFACTURING YARNS OF THE AIR-JET-BULKED TYPE WITHOUT THE USE OF AIR

Abstract

A scaled-up model of the air-jet has recently thrown more light on the mechanism of the process and on the construction of bulked yarns of the Taslan type. This in turn has led to a mechanical method of simulating the air-jet action. The simulation of the process has been so effective that yarns of the air-jet-bulked type can now be produced by a novel method that does not use the air-jet. The apparatus is described, together with certain processing requirements found necessary for maintaining product quality.

The new process is analysed mathematically, and comments are made regarding its feasibility as a possible commercial method of making yarns of the air-textured type without using compressed air.

Keywords:

• MATHEMATICAL ANALYSIS
• TWIST
• LINEAR DENSITY
• OVERFEED
• FALSE-TWIST-SPINDLE SPEED
• AIR-JET TEXTURING
• MECHANICAL BULKING
• PERIODIC BULKING
• CINE-PHOTOGRAPHY
• COMPRESSED AIR
• APPARATUS
• FALSE-TWIST SPINDLES
• FALSE-UNTWISTING APPARATUS
• TASLAN (TN)
• AIR-JET-TEXTURED YARNS
• BALLOONS
• BULKING ZONE

KEY WORDS (BROADER TERMS):

• YARN PROPERTIES
• SPINDLE SPEED
• BULKING
• TEXTURING
• AIR
• SPINDLES
• YARNS
• FILAMENT YARNS
• BULKED YARNS
• TEXTURED YARNS (FILAMENT)