Grey cloth raw material classification, technical indicators and analysis cloth samples

First, the raw material classification of gray cloth:

(1) Pure textiles: The raw materials that make up the fabrics all use the same kind of fibers, including cotton fabrics, wool fabrics, and polyester fabrics.

(2) blend fabric: the fabric material composed of two different types of fiber or two or more types, made from warp yarns blended with cotton and other viscose polyester acrylic blends.

(3) Blended fabrics: The raw materials that make up the fabrics are made of single yarns of two kinds of fibers, and they are made by combining strands. They have low-elasticity polyester filaments, and they are mixed in medium and long lengths. They also have polyester staple fibers and low elasticity. Polyester filaments are blended into strands, etc.

(4) Interlaced fabrics: The raw materials used for the two directions of the fabrics are made of different fiber yarns, silk satin rayon interlaced satin satin, nylon and rayon interwoven Neifa spinning.

According to the composition of textile raw materials whether dyeing classification

(1) White blank fabric: The raw materials that have not been dyed are processed into fabrics, which are also known as raw fabrics.

(2) Color fabric: The dyed and dyed raw materials or fancy yarns are processed into fabrics, which are also known as cooked goods fabrics.

Second, the technical indicators of the fabric

Length of fabric

Warp, warp, warp yarn density - the length of the fabric direction; the yarn is called warp yarn; the number of arranged yarns within 1 inch is dense (warp yarn density);

Fabric width direction

Weft, weft, and weft densities - fabric width direction; this yarn is called weft, and the number of arranged yarns within 1 inch is weft density (weft density);

Grey fabric density - used to indicate the number of yarns per unit length of the woven fabric, usually the number of yarns within 1 inch or 10 centimeters. The national standard specifies that the number of yarns within 10 centimeters is used to express the density, but textiles Businesses are still accustomed to using the number of yarns within 1 inch to represent density. As commonly seen, "45X45/108X58" indicates 45 warp weft yarns and the warp and weft densities are 108 and 58 respectively.

Width - The effective width of the fabric, generally used in inches or centimeters, common 36 inches, 44 inches, 56-60 inches, etc., respectively, referred to as narrow, medium and wide, above 60 inches The fabric is particularly wide, and is often called a wide cloth. The width of an extra wide fabric in China today can reach 360 cm. Width is usually marked behind the density, such as: 3 kinds of fabrics mentioned if you add the width is expressed as: "45X45/108X58/60"" width is 60 inches.

Weight - The weight of the fabric is generally the square meter of the weight of the square meter fabric. The weight is an important technical indicator of the knitted fabric. The woollen woollens also generally regards the weight as an important technical indicator. The weight of denim fabric is generally expressed in "Oz", that is, the number of ounces per square yard of fabric weight, such as 7 ounces, 12 ounces of denim, etc.;

Yarn-dyed - Japan is called "fabric dyeing" and refers to the process of dyeing yarns or filaments first and then weaving them with colored yarns. This kind of fabric is called "dyed fabric" and produces yarn-dyed fabrics. The factories are generally called dyeing factories such as denim, and most of the shirt fabrics are dyed fabrics.

Grey weight calculation:

The grammage of a fabric refers to the weight per unit area of ​​the fabric and is generally expressed in grams per square meter or ounces per square yard (oz/Y2). The actual grammage weight is closely related to the finished product width, the printing and dyeing process, the yarn distribution, and the thickness of the yarn. The following grammage weights are calculated as simple formulas and are for reference only.

Non-elastic Burke weight calculation:

a. Color cloth weight (g/m2):

Stretch cloth finished product weight (g/m2):

Note: It is on the machine, finished product width.

Refer to the above formula for calculating the weight of the finished product in the same category. If the latitude and longitude are the line, due to shrinkage, the weight of the finished product is heavier and the weight gain is approximately 1%. Due to the poor cotton blending and short fibers, the air-spinning yarn has a large fiber loss rate through the dyeing and mercerizing process. Therefore, the yarn coefficient is 24 or 24.3*0.95. This coefficient is an empirical formula, and the yarn count is more than 32s. accurate.

Third, analyze the fabric sample steps

A look at two touches, three, four, five, six burns, seven counts and eight counts

A look: look at fabric samples, see organization and style

Second touch: touch feeling, preliminary judgment of the composition of the fabric, with or without special post-sorting trilogy: to determine whether the elasticity

Four points: Judgment is yarn or thread

Five burning: According to the combustion characteristics to determine the cotton or blended

Six news: judging raw material composition based on burning taste

Seven numbers: number of latitude and longitude