Calendering textile is a finishing process used to smooth, coat, or slice material. With textiles, fabrics are passed between calender rollers at high temperature and pressure. Calendering is used on fabrics such as moire to produce aqueous effect and also on cambric and some types of sateens.
In preparation for calendering, the fabric is folded lengthwise with the front side, or face, inside, and sewn together along the edges. Fabrics can be folded together with full width, but this is not done as often as it is more difficult. The fabric is then run through a roller that polishes the surface and makes the fabric smoother and more lustrous. Temperature and high pressure are also used. The fabric that passes through the calendering process feels thin, shiny and thin.
The resistance of washing of calibrated products to thermoplastic fibers such as polyester is higher than that of cellulose fibers such as cotton. In mixed fabrics such as Polyester/Cotton, durability is highly dependent on the proportion of existing synthetic fiber components as well as the number and types of finishing additives used and the machine and process conditions used.
Video Calendering (textiles)
Variations
Several different endings can be achieved through the calendering process by varying the different parts. The different main types are beetling , watered , embossing and Schreiner .
Beetled
Beetling is the final result given to cotton and linen, and makes it look satin. In the process of beetling, the cloth passes through the wooden rollers and is struck with a wooden hammer.
Watered
The dilute finish, also known as moire, is produced using a striped roller. These rollers condense the fabric and ribs to produce a distinctive watermark effect by moving the yarn and compressing it. This leaves some round threads while others are compressed and flat.
Embossed
In the embossing process, the rollers have patterns engraved on them, and patterns become stamped on the fabric. The end result is a rising or concave pattern, depending on the roller. It works best with a soft cloth.
Schreiner
Similar to aqueous process, in a striped Schreiner process, only in the Schreiner process is a very fine rib, with as much as six hundred ribs per inch under very high pressure. The yarn is pressed flat with small lines inside it, causing the cloth to reflect light better than the flat surface. The finished fabric with the Schreiner method has a very high luster, which is made more durable by heating the rollers.
Maps Calendering (textiles)
See also
- Generalize
References
Source of the article : Wikipedia
0 Comments