Textile Knowledge: How To Test Cotton True And False

Abnormal

It refers to the straw peeling cotton, the grey cotton, the yellow cotton, the fire cotton, the waterloed cotton, the ground cotton and the oily cotton, and the adulteration, adulterated cotton and the old cotton can also be included in this kind.

Stripping cotton and peach

Because of frost, pests and diseases, drought and other reasons, cotton plants can not be normal metabolism, cotton boll development is affected.

Some semi cracked or non cracked cotton bolls are dried and dried to strip out the fibers.

This kind of fiber has a poor maturity, and its base color is white, medium, dark yellow or green.

A little better is also white, without mercerizing, sometimes with light blocks, usually without yellow dye, weak in strength, soft and weak in hands, and poor in elasticity.

When examining the grade, we should focus on the internal quality and consider its use value, and adopt color quality combined with the standard standard of physical objects. Generally, it is suitable for grading within four to six levels.

For example, the standard color is equivalent to grade three, but it has no luster, and the quality is worse than the same class standard. It should be rated as grade four, and the color is equivalent to a certain level below the standard level.

The quality is 2 grades lower than the physical standard of the same grade, and should be set at the middle level.

Ash dyed cotton

It is due to rain and rain when cotton bolls are thrown out, and the cotton fibers are raining and gray.

If there is continuous rain, some microorganisms may invade the fibers and make the fibers deteriorate into dark grey or gray black. The strength is very weak, and the heavy ones will produce bad cashmere.

For this type of cotton, it should be classified according to its maturity, strength and grey depth. According to the size of the force and the depth of the color, its grade is generally determined. It is generally classified as grade four and below, with a special grade of three.

For example, the grey type and the pan green light are the same.

Fiber is difficult to break, according to the physical standard, it can be classified as three grades; light gray, better than the general fiber strength, according to the physical standard, can be classified as four grades; the color is dark, the color is not consistent, the fiber strength is still good, according to the physical standard, it can be classified as five levels: color gray pollution is mixed, fiber and dimensional ability is relatively poor, compared with the physical standard, it can be classified as grade six, the ash pollution is heavy, the fiber strength is very weak, the fiber strength is very weak, the physical standard can be set to seven.