Common Fabric Finishing Technology
- Feb 18, 2020-
The basic finishing methods of fabrics include: the finishing methods of stabilizing the size, improving the appearance, improving the handle and optimizing the performance, the finishing methods of making fabrics obtain multi-function and high added value, the finishing methods of making fabrics advanced, and the finishing methods that meet the special requirements.Post-finishing process
Preshrinkage is a process of reducing the shrinkage of the fabric after it is soaked by physical means to reduce the shrinkage rate. Mechanical preshrinkage is the fabric first by steam or spray to wet, and then by mechanical extrusion, so that the flexion wave height increases, and then by loose drying.
Stretch is the process of using the plasticity of cellulose, silk, wool and other fibers under wet conditions to gradually stretch the fabric width to a specified size for drying, so as to stabilize the fabric shape, also known as the set finish.
Sizing refers to the process of soaking and drying fabric to obtain a thick and stiff feel.
4 heat styling
Heat setting is the process of making thermoplastic fibers and blends or interweaves relatively stable. It is mainly used for the processing of polyamide or polyester synthetic fibers and their blends that are easy to shrink and deform after being heated. After heat finalize the design of the fabric, can improve the dimensional stability, feel more stiff.
Whitening is the use of light complementary color principle to increase the whiteness of textiles technological process, also known as white. Whitening methods are blue and fluorescent whitening two.
6. Calendering, electro-optical and striping
Calendering is the process of flattening or rolling out parallel fine twill on the surface of fabrics by means of the plasticity of fibers under hot and humid conditions to enhance the luster of fabrics. Flat rolled light consists of hard roll and soft roll, the fabric after rolling, the yarn is compressed, smooth surface, luster enhancement, feel stiff. The soft rolling point is composed of two soft rollers. After the fabric is rolled, the yarn is slightly flat, and the luster is soft and soft to the hand.
Electroluminescence is the use of electrically heated rollers on the fabric calendering.
Rolled grain is made up of steel roller and soft roller with Yang grain pattern. Under the condition of hot rolling, the fabric can obtain a shiny pattern.
7. Fleece and fur grinding
The process of grinding a layer of short and dense nap on the surface of the fabric with a sanding roller (or belt) is known as the grinding nap, also known as the grinding nap. The grinding finish can make the warp and weft yarn produce nap at the same time, and the nap is short and dense.
Fuzz refers to the process of picking the fibers of the fabric surface with dense needles or thorns to form a layer of fluff, also known as luff finishing, fuzz is mainly used for woolen fabrics, acrylic fabrics and cotton fabrics. Nap layer can improve the warmth of the fabric, improve the appearance and soft feel.
Shearing is the process of using a shearing machine to remove unwanted fuzz from the surface of the fabric. Its purpose is to make the fabric weave clear, smooth surface, or fluff, pile fabric nap or nap neat. General wool, velvet, faux fur and carpets and other products need shearing.
There are two kinds of soft finishing methods: mechanical finishing and chemical finishing. Mechanical soft finishing is achieved by rubbing and bending the fabric for many times, but the soft effect after finishing is not ideal. Chemical soft finishing is to apply softener on the fabric, reduce the friction coefficient between the fiber and the yarn, so as to obtain soft, smooth feel, and the finishing effect is significant.