Pumice describes the working principle of the steamer:
The first step: the fuselage is warmed up. The unique preheating system, in the steaming process, the water spot on the yarn is a common problem, the water droplets will cause dyeing and other problems in the subsequent process. Therefore, the steam preheating process is absolutely necessary, especially the wool yarn.
The second step: vacuuming. Lower the boiling point of water to produce the desired low temperature saturated steam.
The third step: heating. The low temperature saturated steam is allowed to penetrate into the tapered bobbin. Every production process (spinning, twisting, weaving...) causes tension effects on the yarn and the fiber, and the tension causes the yarn to become entangled. The stress relaxation of the molecular structure in the rayon causes the fiber to shrink. Tension and tangling can cause problems in the subsequent process.
Therefore, the steaming machine produced by Pumice Technology has brought the best choice for yarn production.
Studies have shown that the following types of yarns must be relaxed and styled using a steaming machine: cotton yarn, wool yarn, polyester/cotton blended yarn, polyester yarn, core yarn (spandex), sewing thread, rayon, acrylic tow, mesh Knitted Fabric (Curled Fiber) Each material requires a specific processing process to achieve the desired result. Saturated steam from 40 ° C up to 140 ° C is the most ideal heat setting medium. It easily penetrates into the interior of the yarn and releases energy during condensation.
The fourth step: heat preservation. The transition from vacuum to a low temperature saturated vapor state allows the entire package yarn, including the packaging material, to be completely processed. The moisture of the cold steam is transferred to the yarn, and the moisture distribution of the yarn is absolutely uniform, achieving consistent yarn strength and friction values, and the heat treatment also relaxes the twist.
In the production process of the yarn, the moisture of the fiber is continuously volatilized, and the humidity of the raw material to the package yarn is reduced by more than 4%. Different spinning mills have different yarn moisture indexes. Increasing the speed of the machine leads to a large loss of weight (moisture); the high temperature and friction inside the machine evaporates the moisture in the yarn and reduces the quality of the yarn. It is not conducive to the subsequent processing steps.
The fifth step: a second vacuum. The unique vacuum design of the pumice steamer ensures the processing of the yarn.
The sixth step: secondary heating and insulation. Make sure to compensate for the loss of yarn weight and improve yarn quality. After the yarn is humidified (steamed), it is placed after the winding. Before the yarn is stored in the warehouse, if the storage time of the yarn is long, it is better to perform it before delivery. The proper packaging of the yarn during transport, such as: a package of bobbins or a tensioning of the yarn, can maintain the humidity of the yarn. In addition, knitting and weaving can also benefit from the humidification process prior to use of the yarn. The research on the supply and demand of weaving shows that the yarn is better than the non-humidification treatment (dry yarn) after humidification treatment. When the weaving yarn is used for the weft yarn weaving, the number of the machine is greatly reduced, and the yarn is greatly reduced. The strength and elongation at break are improved, the hairiness is reduced, and the weaving efficiency is increased by 2%. In the knitting aspect, the fly flower is significantly reduced. In trade, buyers never receive additional markups, and the increase in yarn weight is an increase in profits. Generally, the investment return period of yarn humidification equipment is less than one year, and the investment return period of cotton yarn humidification equipment is even less than half a year. In addition, the quality requirements of export trade also need to continuously improve the quality of yarn. Therefore, the humidification of the yarn has become an important part of the contemporary textile process, which can compensate for the loss of yarn weight and improve the quality of the yarn.
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