Introduction of Wrap Reel



Wrap reel is one of the instruments used to evaluate the linear density technical indicators of yarns, fibers, and filaments. Some foreign users are also use it to prepare yarn strength samples. It is widely used in the textile industries, testing institutions, quality inspection and law enforcement units and central laboratories of scientific research institutions.

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​The instrument controlled by a single-chip microcomputer can be set to slow down the operation 1 to 5 turns in advance of the final stop, effectively avoiding coil punching phenomenon. It can start and stop smoothly without additional tension impact, with low operating noise, accurate coil counting, good reliability, and low failure rate. The electronic counter designed as an integral part of the single-chip microcomputer has real-time speed measurement function and continuous stepless speed.

Standard

GBT 4743-2009 Textiles — Yarn from packages — Determination of linear density (mass per unit length)by the skein method
GB 8696-1988 Textiles — Yarns from packages — Method of test for breaking strength of yarn — Skein method
GB/T 6838-1986 Testing method of sewing thread
GB/T14343-2008 Testing method for linear density of man-made filament yarns
GB/T7690.1-2001 Reinforcements — Test method for yarns
Part 1: Determination of linear density
ISO6939, etc.

Principle of wrap reel

After setting the number of test turns, wrap the end of the sample around the reel through the yarn guide, tensioning device, and transverse yarn guide, start the instrument, count the rotation of the reel and display it in real time. When the reel rotates to the set number of turns, it automatically stops. When the reel starts, the CPU gives the motor a slow start instruction; before the reel stops, the CPU gives a slow rotation instruction to achieve the purpose of no punching coil, and the slow rotation speed can also be set. The biggest benefit of the reel slow start and slow stop is that it can effectively prevent the start-up breakage of low-twist yarn and weak-strength yarn, smoothly transition from start to stop, and the circle length uniformity is good.

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