Introduction of Blended Yarn
What is blended yarn? As the name implies, blended yarn is a yarn made of two or more fibers as raw materials, which are distributed and adjusted according to different proportions and processed through a certain process. With the continuous progress of fiber production technology, many new fiber materials are used to make blended yarns, which greatly enriches the types of blended yarn products. Now the more common blended yarns on the market are cotton yarn polyester, silk yarn viscose, nitrile yarn Yarn cashmere, acrylic yarn nitrile, soybean fiber wool, etc.
Classification of blended yarns
Blended yarns can be divided into three categories:
1. Natural fiber blended yarn. Such as: cotton/linen, wool/linen, silk/cotton, etc.
2. Man-made fiber blended yarn. Such as: polyester/nitrile, polyester/viscose, brocade/rayon, etc.
3. Natural and man-made fiber blended yarn. Such as: polyester/cotton, wool/viscose, etc.
At present, the common blended yarns are polyester-cotton blended yarn, polyester-viscose blended yarn, polyester-acrylic blended yarn, cotton-viscose blended yarn, acrylic blended yarn, bamboo-cotton blended yarn, bamboo-polyester blended yarn, Silk cotton blended yarn, modal cotton blended yarn, Tencel cotton yarn, linen cotton blended yarn, etc., and some special three-in-one blended yarns, such as acrylic viscose cotton blended yarn, polyester viscose cotton blended yarn, Acrylic hemp blended yarn, etc.
Selection of Chemical Fiber Raw Materials in Blended Yarn
(1) Improve the quality and performance of the product:
Blended yarn can make full use of various excellent characteristics of chemical fibers, learn from each other’s strengths and improve the use value.
(2) Forming yarns for different purposes:
Through the blending of different fibers, blended yarn products of various styles and uses are made to meet various needs of the textile industry and other industries.
(3) Improve spinnability:
In blended yarns, blending synthetic fibers with cotton or viscose with higher hygroscopic properties can improve the spinnability of the yarns.
(4) Reduce product cost:
In the case of guaranteeing the requirements, blended yarns generally use some low-cost fibers to reduce production costs.
Selection of chemical fiber varieties and determination of blending ratio
The selection of chemical fiber varieties in blended yarns should consider the following factors:
The use of the product, such as clothing or industrial use, underwear or outerwear; the performance requirements of the product, such as the strength and stiffness of the fabric; the production cost of the fabric.
(1) The main varieties of chemical fibers used to make blended yarns are polyester-viscose blended yarn, polyester-nitrile blended yarn, etc.
(2) The main varieties of cotton and chemical fiber blended yarn are polyester-cotton blended yarn, acrylic cotton blended yarn, viscose-cotton blended yarn, viscose-cotton blended yarn, etc. Cotton plays a role in improving the hygroscopicity, spinnability and wearability of the product.
(3) The determination of the blending ratio mainly considers the following factors: the performance of the fabric, such as strength, style, etc.; the cost of the fabric and the price of the product.
Commonly used blending ratios of blended yarns are 50/50, 55/45, 60/40, 65/35, and some products use blending ratios or reverse ratios such as 20/80 and 30/70. The fiber with a large proportion has a greater influence on the properties of the yarn, and the finished blended yarn has the properties of this fiber. The determination of the blending ratio mainly considers factors such as cost, strength, fabric requirements and spinning performance.
Example of blend ratio
Next, we give a few examples to illustrate the choice of blending ratio.
The blending ratio of polyester fiber and cotton fiber in polyester-cotton blended yarn is 65:35. Although the wrinkle recovery and abrasion resistance of the yarn are significantly improved with the increase of the blending ratio of polyester fiber, the hygroscopicity and air permeability of the yarn gradually deteriorate, and the electrostatic effect also increases. If it is used for outerwear fabrics that require rigidity, the proportion of polyester fibers can be increased. For underwear fabrics that should be comfortable to wear, a low proportion of polyester-cotton blended yarn can be used.
Polyester and viscose blended yarns are often blended with polyester fibers and viscose fibers in a ratio of 65:35. If the viscose fiber content exceeds 50%, the wrinkle recovery and morphological stability of the yarn will be deteriorated. If you can mix about 15% nylon fiber in the polyester-viscose blended yarn, the fabric will be more wear-resistant.
The fabric made of polyester-nitrile blended yarn has a good wool feel, but the static electricity phenomenon is more serious. , when it exceeds 65%, the reduction is more significant, so the commonly used blending ratio of polyester fiber and acrylic fiber is 50:50 or 60:40.