How to make Generic cotton bags from natural fiber
The cotton raw has to traverse a long path before being used as Bags and other accessories. The journey has two-fold levels – one of from raw fiber to yarn and finally from yarn to produced materials. The fabric that is used in making of clothes to be used in the manufacturing of bags and other accessories is processed via two consecutive methods.
- The Spinning Process – here the raw cotton fibers are turned into thread.
- The Weaving Process – it is the process where the thread is woven in to fabric
An enunciated briefing seems helpful in accessing the entire gamut of Cotton Bags manufacturing.
The Spinning Process
This process has been divided into various sub-processes. A brief account of each has been enumerated as under:
Mixing and Blowing:
The spinning process is commenced with the unraveling of the compressed staple fiber that is delivered to the spinning plant. This is done by using a mixing and blowing machine. The compressed fibers are then cleaned by removal of substances like leaves, seeds and sand gravel adhered to. The stapled fibers are finally processed into sheet-shaped Lap.
The processed sheet-shaped Lap is combed within carding machine. This is done in order to part with fibers and removal of fine dust and short fibers. The subdued long fibers are aligned parallel. These are collected for process into a string-shaped “carded sliver.”
- Silver Lap Former:
Around 20 pieces of a string-shaped “carded sliver” are fed in one. These are then drafted forming a loose form of web. The web is rolled up to a lap, called Silver Lap.
- Comb:Some short fibers and sand gravels are still found clinging to the fiber Lap. These are removed by arranging fibers in a parallel fashion when uniform combed silver is obtained. This process is called Combing and is needed in yielding high quality yarn.
- Drawing:The drawing process is used to straighten the fibers and remove uneven thickness from them. A group of six to eight silvers are gathered after combing and elongated to around eight times their original length using a drawing machine. Thus, the fibers are transformed into ‘Drawn Silver.”
- Roving: The ‘Drawn Silver” is too thick for direct production of yarns. A roving machine is thus used for further elongation of these ‘Drawn Silver.” In this process, method of twisting is first applied that result in getting green yarn, wound into bobbins.
- Fine Spinning: In this process, the green yarn, wound into bobbins are put to further elongation to get a uniform thickness. It is then twisted to get finished yarn. This is again wound into bobbins.
- Winding: The winding is the final process if spinning. It includes rewinding of the finished yarns on to bobbins into cheese or cone. It depends on the purpose.
The Weaving Process:
In this process, the warp thread and weft yarn are crossed over one another in a set method in order to weave the required type of fabric. The whole task is accomplished by a machine called loom. This process of weaving is also involved a number of sub-processes that may be summarized as follows
- Warping: The cheese or cones developed in the Winding Process are set on a warping machine. This helps in twisting the predetermined length and number of yarns onto the predetermined number of warping beams hovered under unvarying tension.
- Sizing: The warping beams obtained from the required number of warps in final textile are piled up for winding on beams. This is done after sizing and drying.
- Drawing-in: This process involves setting of beams on a loom. The warps are routed vis-à-vis droppers, healds and guiding bars.
- Weaving: The prepared beams are set on looming frame. This is so to weave textile in numerous motions :
- Shed: In this motion, two groups of warps are opened to let the weft pass through.
- Pick: Here, the weft is inserted between two groups of warps.
- Beat-up: In this motion, new inserted yarns are back into the fell using reed.
- Let-off: The warp yarns are unwound from the warp beam in this motion
- In the final Take-up motion, woven fabric is wound on the cloth beam
- Packing: The woven fabric is packed in shipping-perfect procedures to yield the final product.
- Selling of Product:The final product is now ready for shipment.