Introduction . After the cutting department the fabrics come to the sawing department.then the bulk is start to sawing.in the sawing department the garments going though production system and then the saems and stiching .
Garment production system 1. Make though system In this system an operator makes right through one garment at one time.
Garment production system 2. Coventional bundle system Sewing machines are arranged in lines. The work flows from the central (store) area to the first machine, from the first machine back to the store, and then on to the next machine, and so forth. A distributor stationed at the store is responsible for receiving and dispatching the work. The work in progress is in the form of bundles. These bundles may be put on to a tray, a box, or a bag, or the garment parts may be wrapped and tied.
Garment production system 3. Clump system A worker collects a clump of materials from the worktable and carries out the first operation. After he has completed his part of the work, he returns it to the table. A worker for the second operation then continues the work and so on. The process is ' collection - work -return ' continues until the whole garment has been assembled.
Garment production system 4. Progressive bunddle system Each operator receives a bundle, does his work, reties the bundle and passes it to the next operator. There is a storage facility such as rack, bin or table for storing the inter-process work between each operation. The work is routed by means of tickets. This system is the most widely used system in the garment industry today. It is used in shirt factories, jeans factories, jacket factories, etc.
Garment production system 5. Flexible flow system A section of sewing operators, each with a supply of work in a rack at the side, work at an engineered work place. The machines are laid out in such a way that a flow of work can be planned using the correct number of operators in sequence. For style A garments, the work distributed after operation 1 can be distributed to the two operators performing operation 2. On completion, the work from both workers is then sent to operator 3. After operation 3, the work is continued by the two operators performing operation 4 and so on. When a new style is to be loaded on to the system, the number of operators needed for each operation must be planned in detail to ensure a balanced output.
Garment production system 6. Straight line system The manufacturing process is broken down into several operations, which take the same time to complete. Groups of operators are required to handle only individual garments. The garment parts pass from one operator to the next, until the garment has been completely made up by one group of operators. The central distribution unit may be a fixed table or a a conveyor belt (its speed will be set to suit the cycle time).
Garment production system 7. Synchro flow system Garment parts of the same size and color are processed separately. Different garment parts can be processed simultaneously for assembling. At the same time, collars, sleeves, cuffs, pockets, etc., from other lines also go down a central line. The different garment parts are then processed together to form completed garments.
Garment production system 8. Unit production system A unit production system (UPS) is a computer-controlled production line. It is a type of line layout that uses an overhead transport system to move individual units from work-station to work station for assembly. All the parts for a single garment are advanced through the production line together by means of a hanging carrier that travels along an overhead conveyor. Production operations are completed without removing the parts from the carrier. Automated materials handling replaces the traditional system of bundling, tying and untying, and manually moving garment parts. Electronic data can be collected from workstations, which provides payroll and inventory data, immediate tracking of styles, and costing and performance data for prompt decision.
Garment production system 9. Modular manufacturing system Modular manufacturing groups operators into teams, or modules. The team works on one/a few garment at a time instead of a bundle of garments. The operators stand /sit at their stations and rotate to different machines as they work, becoming familiar with multiple steps in producing the garment.
SEAM AND STICHES SEAM What is a seam ? A seam is a line where two or more fabrics are joined.
Seams and stiches Types of seams Superimposed seams Lap seams Bound seams Flat seams Edge finishing seams Superimposed seam Lap seam Edge finishing seam Flat seam Bound seam
Seam and stiches Stich What is a stich ? A stich is the configuration of the interlasing of sawing thread in a specific repeated unit.
Classification of stiches 100 class stich: single thread chain stich One needle thread and one blind loop. Stich class Thread count Typical uses 101 One thread Light constructions 103 One thread Blind stich for hemming 104 One thread Blind stich for hemming
Classification of stiches 200 class stich: single thread hand sawn stich Using one needle thread Stich class Thread count Typical uses 202 One thread Basting 205 One thread Pick stiching
Classification of stiches 300 class stich: two or more thread lock stich Using needle thread and one bobbin hook thread Stich class Thread count Typical uses 301 Two thread Seaming multiple plies 304 Two thread Zig-zag stitch ; a stretch lockstitch 306 Two thread Blind stitch 315 Two thread Three step zig-zag
Classification of stiches 400 class stich: multi thred chain stich Using one more needle thread and one or more looper threads s Stitch class Thread count Typical uses 401 Class Two threads Seaming multiple plies with moderate stretch 404 Class Two threads Topstitching or seaming with stretch 406 Class Three threads "Bottom cover stitch ; a (greater) stretch chain stitch
Classification of stiches 500 class stich : multi thread over edge chain stich Using needle thread and looper thread Stitch class Thread count Typical uses 501 Class One thread One needle over edge stitch for serging / “blanket stitch " 502 Class Two thread One needle over edge stitch for serging 503 Class Two thread Over edge stitch for serging with crossover on edge of fabric 504 Class Three thread Over edge stitch for serging and light seaming
Classification of stiches 600 class stich : multi thred cover stich Stitch class Thread count Typical uses 602 Class Four thread Cover stitch or seaming knits 605 Class Five thread Cover s titch 607 Class Six thread Wide cover stitch
Thank you…. Name – G .K. O shan Devinda NDT – Textile and clothing technology [ U niversity Of M oratuwa ]