Click Here to Download Free E-books

All post – Page 30 – Textile Study Center

Different types of Knitting needles

Primary knitting elements:Three primary knitting elements: Needle: Latch needle, Spring bearded needle & Compound needle. Cam: Knit cam, Tuck Cam, Missed cam Sinker: Holding down sinker, Knocking over and loop forming sinker Main parts and their functions of latch needle The hook: Grasping a new yarn in the process of knitting i.e. the hook which draws and retain the new loop. The latch: Freely rotating around the axle and tightly closing the hook owing to the spoon located at the end of the latch.

Types of Calenders in Textiles

Methods of Evenness Testing

The optical method measures the variations in diameter of a yarn and not in its mass. The instrument an infra-red transmitter and two identical receivers. The yarn passes at speed through one of the beams, blocking a portion of the light to the measuring receiver. The intensity of this beam is compared with that measured by the reference receiver and from the difference in intensities a measure of yarn diameter is obtained.

Naturally Colored Cotton

Twisting and Amounts of Twist for Different Materials – why is the amount of twist in a yarn important

The roving coming out of the front delivery roller is threaded through the top of the flyer, passes through its hollow leg around the presser arm on to the bobbin. The purpose of providing twist in roving is to give the strand sufficient strength to withstand the strain during unwinding in the creel of the ring frame. The insertion of twist is achieved by the rotation of the flyer.

Naturally Colored Cotton

Drafting system of roving frame I Draft Distribution of Speed or roving Frame |The simplex/roving frame is a necessary evil

The drafting section of the roving frame may be 3 over 3 or 4 over 4 with or without apron roller arrangement. Only the 3-over-3 or 4 over 4 roller with double apron drafting system are still to be found in modern machines offered by manufacturers. In general 3/3 drafting system is used, but for higher draft applications 4/4 drafting system is used.

Types of Calenders in Textiles

Copy link
Powered by Social Snap