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      YARN MANUFACTURING   TECHNOLOGY LAB-2 Experiment:1 EXP. NAME: Study on gearing diagram of a Drawframe Machine. Introduction /Theory: Drawframe  is a machine for combining and drawing slivers of a textile fiber (as of hemp for rope manufacture or cotton for spinning). Drawing  is the operation by which slivers are blended, doubled and leveled. In short staple spinning the term is only applied to the process at a It is a process of yarn manufacturing in which the sliver is elongated when passes through pairs of rollers, each pair moving faster than the previous one.This permits combination of several slivers. These slivers are drawn and elongated to straighten and create greater uniformity.There are two types of draw frame 1.     Draw frame -1/Pre-comb drawing/Breaker draw frame 2.     Draw frame -2/Post-comb drawing/Finisher draw frame Objectives of Draw Frame: 1. To straighten the fibres in the slivers. 2. To make them lie in a manner parallel to their

Content 1. Yarn definition 2. Single Yarn definition 3. Plied Yarn definition ` 4. Thread definition 5. Range of some yarn( Carded yarn, Combed yarn, Rotor yarn, Knit yarn, Woven yarn) 6. Yarn Types 7. Designation of Yarn Yarn: A continuous linear strand of fibers/filament assembly ,either twist or not. Single yarn: Primarily which fiber are twisted and we got it . Plied yarn : When two single yarn are twisted it is known as plied yarn. Thread: Thread is a type of yarn intended for sewing by hand or machine.  The range of difference type of yarn Carded yarn:     2200-2400 Combed yarn:   2800-3200 Rotor yarn:       1600-1800 Knit yarn:         2100-2300 Woven yarn:    2400-2600 Types of Yarn Seven types of yarn     Here                                                Single yarn types  1. Continuous filament  Mono filament Multifilament 2.Spun Homogeneous Blend 3.Modified Here                         

                                  Weaving Process, Weaving Cycle  Weaving process: The process by which producing fabric in interlacing warp and weft thread is known as weaving process. Loom/ Weaving Machine: The machine used for weaving is know as  Loom/weaving Machine.                                                    Weaving Cycle  Weaving cycle mainly three types  This three motion are required in the Loom for Weaving. 1. Primary motion Shedding Picking Beat up  2. Secondary Motion  Take up Let off 3.Tertiary Motion  Warp and weft stop motion  Warp and weft protector Some Important Definition  1. Shedding: The space between two yarn sheets  is called shedding. Or       Separating the warp yarns into two layers lifting  and lowering the shafts , to form a tunnel known as shed. In conclusion we can say that, The shedding is a operations by which the warp yarn is divided into two parts so that sufficient gap is created betwe

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