Yarn Blackboard Twister

Yarn Blackboard Twister

The yarn blackboard twister is an instrument used to twist various yarns on a standard blackboard to inspect and evaluate the appearance quality grade of the yarns.

Applicable Standards

1. GB/T 9996: This standard may involve the blackboard inspection method for the appearance quality of pure cotton and chemical fiber staple yarns, providing specific guidance for the testing of the yarn blackboard twister. 2. GB/T 398: Although the details may vary depending on the version, this standard is usually related to certain performance requirements of raw cotton yarns and may also contain provisions on the testing methods of the yarn blackboard twister. 3. GB/T 5324: This standard may involve other specific testing methods for textile materials or yarns, which are relevant to the use scenarios of the yarn blackboard twister. 4. FZ/T 32004 and FZ/T 32005: These standards may be aimed at the appearance quality or testing methods of chemical fibers or specific types of yarns, and are also applicable to the testing of the yarn blackboard twister.

Main Parameters

Blackboard Specifications
The blackboard is a key component of the yarn blackboard twister, used to carry and display the yarns. Common blackboard specifications include 250×180mm, 250×220mm, etc. There are also smaller specifications such as 50×180mm, depending on the model and manufacturer of the testing instrument. In addition, the thickness of the blackboard is also an important parameter, usually a few millimeters.Twisting Density
Refers to the number of yarns per unit length, usually expressed in "number/cm" or "number/10cm". The twisting density has an important impact on the evaluation of the appearance quality of the yarns. The common range of twisting density may vary from 7 number/cm to 19 number/cm, and there are also density settings such as 35, 45, 55 number/10cm.Yarn Frame Speed
Refers to the rotational speed of the yarn frame, usually expressed in "revolutions per minute (r/min)". The yarn frame speed is adjustable to adapt to different yarns and testing requirements. The common range of yarn frame speed may vary from 10r/min to 400r/min.Overall Dimensions
Refers to the overall size of the yarn blackboard twister, including length, width, and height. The overall dimensions have requirements for the installation and use space of the equipment. The common range of overall dimensions may vary depending on the manufacturer and model, but it is usually relatively compact and convenient for use in laboratories or production sites.Weight
Refers to the net weight of the yarn blackboard twister, usually expressed in kilograms (kg). Weight is one of the factors to be considered during equipment transportation, installation, and use. The common weight range may be around 20kg, depending on the configuration and materials of the equipment.Power Supply
Refers to the type of power supply and voltage level required by the yarn blackboard twister. The common power supply type is alternating current (AC), and the voltage level may be 220V with a frequency of 50Hz. In addition, the power of the equipment is also an important parameter, usually expressed in watts (W), with a common power of around 40W.