The quality of the carding sticks includes the intrinsic quality and appearance quality. The appearance of the appearance of the main defects are mainly coarse and fine, scraper plot flowers defect, the bottom of the suction flower defects, Xilin entanglement defects, triangular area hanging flowers defects, other hanging flowers and other defects.

1, thick strips

Thick strip is the raw strip thickness has obvious changes in the raw strips, can be used to determine the visual method. Its performance for the raw section of a thick section of fine, thick or thin strip length according to the reasons for the different. The thickness of the strip after the article to the weight of the deviation, and ultimately lead to poor yarn CV value of the yarn, long section of the thick section, long fragment details increased, and even affect the number of spinning.

Thickness of the main reasons are: single machine card produced by the main reason for the sliver of the main reasons for the uneven volume of the lap, uneven lobes lead to uneven weight, this thick strip length is very long, can last about 20m , Even longer; carding combing the card, the main reasons for the production of coarse and white there are two, one for the cotton layer adjustment is bad, there are hanging flowers or missing edge, two for the leveling device failure lead to more uniform uneven uniform; Leakage at the end of the flower is also prone to thick strips, but the bottom of the suction flower defects are generally shorter, the following will be discussed.

2, scraper plot flowers defect

Scraping flower is the card roller three roller output cotton system in the pressure roller and scraper produced between the more accumulation of flowers, and continue to have a small amount of plot with the pressure roller into the cotton net and output to the Health On the formation of scraper plot flowers defect. Scraper plot flower defects in the surface of the raw and raw strips are likely to exist, the defects on the fiber is not straight parallelism, defective short hair and small cotton ball. Scraper defects in the post-process, in particular, the process is easy to lead to block the bell, resulting in the influx of cotton, yarn in the knitting and thick section increased.

The reasons for the formation of the scraper are as follows: the raw material has static electricity, which causes the cotton net to be wound around the pressure roller to form the scraper defect; the pressure roller is too large or too large to cause the scraper defect; the scraper is damaged.

3, the bottom of the suction flower defects

Leakage at the end of the flower is the transfer of silk from the forest in the process of the transfer of cotton, some have been transferred from the cylinder over the cotton net and returned to the formation of the defect on the cylinder, that is, the bottom of the suction flower defects. Manifested in the emergence of thin strips and a large number of lumps. Due to the bottom of the suction flower defects in the presence of pimple bars, easy to cause and tie a serious trumpet, yarn into the yarn CV value is high, increased yarn into the thick section.

The reasons for the formation of the bottom of the suction flower are: Daofu needle cloth sharpness too poor, can not effectively hold from the cylinder on the transfer of cotton; raw fiber friction factor is too low, Daofu is not easy to hold the cotton net; Gauge adjustment unreasonable, leading to Xilin Daofu triangular airflow disorder, causing leakage at the end of flowers.

4, Xilin entanglement defects

Xilin entanglement refers to the fiber on the cylinder can not be transferred by the doffer, resulting in cotton net wrapped in the surface of the cylinder, the formation of Xilin wrapped flowers defects. Xilin entangled, wrapped around the area of cotton flowers disappear, the corresponding cover plate area cover flowers thicker, in the raw strip can be clearly seen that there are large pieces of unpackable open cotton. Xilin entangled, due to the existence of a large number of raw card is not a good bundle of cotton, will cause a significant deterioration of the yarn gauze.

Xilin entangled the main reasons are: Xilin wrapped area of the needle cloth finish is poor, the tip of the hanging flowers caused by Xilin wrapped flowers; special varieties, especially spinning fine fiber easy to touch the forest.

5, triangular area hanging flowers defect

Triangle area hanging flowers is the end of the entrance and the existence of the phenomenon of hanging flowers at the end of the phenomenon, hanging flowers disrupted transferred to the doffer on the cotton net fiber arrangement, destroyed the fiber straight parallelism, thus forming a triangle hanging flowers Defect. Triangle area hanging flower defect is a typical defect, the sliver surface parallel to the existence of parallel to the poor fiber, smooth life damage, similar to the top. Triangle area hanging flower defects are likely to cause yarn lint and thick section increased.

Triangle area linked to the formation of the main reasons are: the bottom is not clean, burr, the formation of hanging flowers, resulting in defects; bottom and Xilin gauge poor, air disruption, resulting in hanging flowers.

Above listed several kinds of birth defects in the actual production of the more common, but also on the yarn yarn defects relatively large appearance defects, should cause everyone to pay attention. Only at the same time do a good job of combing quality and appearance quality, in order to ensure the final quality of yarn stability.
Source: Cotton Textile