A Guide to Textile and Clothing
A Guide to Textile and Clothing
Introduction Polyester are polymers made by a condensation reaction taking place between small molecules, in which the linkage of the molecules occurs through the formation of ester groups. Polyesters are commonly made by interaction of a dibasic acid with a dihydric alcohol: HOOC-X-COOH + HO-Y-OH → …OC-X-COO-Y-OCO-X-COO-Y-OCO… The formation of polyester was studied by Wallace H. Carothers[…]
Definition of Twist The process by which fibres are arranged around the axis of yarn is called yarn twist. It imparts strength to the yarn. Higher the twist more the yarn strength, till optimum twist is reached. But due to property of ‘fabric assistance’ even less than optimum twist will produce fabrics of maximum strength. It also[…]
Denim Yarns Denim yarns now cover a wide range of applications from traditional cotton “Jeans fabric” produced from Ne 5.6/1 to ladies fashion shirts produced from Ne 22/1 and finer. Denim was originally defined as woven, cotton, fabric produced from an indigo dyed warp and a natural-colored filling and most of the yarn counts fell between Ne 5.6 and[…]
Introduction Sisal is an Agave sisalana that yields a stiff fibre traditionally used in making twine, rope, and also dartboards. (The term may refer either to the plant or the fibre, depending on context) It has often been incorrectly referred to as sisal hemp because hemp was for centuries a major source for fibre, so other fibres were[…]
Definition of Emulsion Jute batching is of a simple nature, usually containing only the mineral oil, water and emulsifying agent. An emulsion is an intimate mixture of two immiscible liquids, one dispersed in droplets from inside the other. It has two phases – an external phase and an internal phase. The external phase is the water[…]
The factors which put limitation for higher production in ring frame are – Maximum traveller speed It is limited by the types of ring flange, style of traveller, wt. of traveller and rate of traveller run. Maximum roller delivery speed The limiting factors beings the ability of the operative to piece-up the broken ends and the[…]
Ring The functions of ring are: Traveller It performs the following functions: It also performs many other functions involving highly complicated problems of higher physics. Creel The function of the creel is to hold the roving bobbin over a roller beam within a convenient height to easily handle the roving. The creel must permit[…]
Drafting system can be broadly classified under two heads namely: The system with apron can again be classified into three groups: Example of regular drafting system without apron: Example of single apron drafting system: Example of double apron drafting system: Example of multiple Apron drafting system: OM – Super High Draft System This system is[…]
The Faults Found in Ring Frame Yarn and their Causes Soft Yarn Generally caused by slack spindle bundles, twist change wheel too large, empty bobbins not properly pushed down during doffing. Uneven Yarn Either travelers are too heavy or for spinning fine counts from inferior cotton. Fuzzy Yarn Rings too large, by ballooning or bad lubrication of[…]
During spinning operation the drafted strand of fibre being delivered and held at one end by the front rollers, the other end rotates round the bobbin with the traveller on the ring. It is observed that the thread between the thread guide and the traveller, is bulged out which is called the ballooning effect if the thread; and the[…]
