Heilongjiang Junhe Building Materials Technology Co., Ltd , https://www.junhejiancai.com
Wool has a high friction coefficient due to the scales on its surface, leading to increased resistance when rubbing in the opposite direction. To help remove impurities and improve fiber handling, wool is often treated with a hair opener. In such cases, lower relative humidity is preferred to reduce static buildup. During the mixing and spinning processes, the friction between wool fibers is reduced—often through the application of oil—to make carding and spinning more efficient.
When dry, wool behaves similarly to vegetable fibers, acting as a good conductor of electricity. Its conductive properties are superior to synthetic fibers like nylon or polyester, but not as effective as cotton fibers. Moisture content significantly affects electrical conductivity. At a moisture regain of around 2%, wool can achieve better conductivity, reducing static problems. To minimize static buildup, it's important to maintain a certain level of humidity, which helps keep the wool fibers from clinging together and causing issues during processing. Machines are often equipped with grounding systems to dissipate static electricity effectively, preventing the wool from sticking to rollers or other equipment.
In wool mills, combing machines are used to separate and align fibers in the combing and spinning areas. Static electricity generated during these operations is managed using specialized tools like the KT comb, which helps prevent suction and pulling effects caused by the W blade. Maintaining higher humidity levels in these areas improves the conductivity of the wool, making it easier to handle and process. Some factories have even introduced advanced static elimination devices, which have proven to be highly effective. These improvements lead to smoother blade movement and better removal of impurities.
The oil content in wool mills is generally higher than in cotton mills. Wool has strong hygroscopic properties, which means it absorbs moisture easily. This makes it less prone to issues like wet adhesion and leakage compared to other fibers. Controlling the moisture content helps maintain fiber flexibility, which is crucial for smooth processing. In the roving stage, wool is carefully monitored to ensure proper twist addition, helping to eliminate static and reduce fiber elasticity. As wool moves into the spinning process, it becomes more manageable, allowing for better yarn formation. The entire process aims to minimize disruptions, ensuring a quiet and efficient operation. When the fibers are properly conditioned, they flow smoothly through the machinery, enhancing overall productivity and quality. More information: Recorder http://
Relationship between physical properties of wool and temperature and humidity
To understand the temperature and humidity requirements in wool mills, it is essential to examine how the physical properties of wool are affected by environmental conditions. When the moisture content increases, wool becomes softer and more pliable, which helps in stretching and processing, but this also reduces its tensile strength. This behavior contrasts with plant fibers, which typically do not exhibit such dramatic changes in mechanical properties with moisture variation.