Thread consumption guide Thread Consumption Guide Bulletin Post Contents Measuring actual thread consumed Using thread consumption ratios Coats Seamworks Thread Calculator Access Coats Seamworks Thread Consumption Methods In today ? s competitive marketpl

Thread Consumption Guide Bulletin Post Contents Measuring actual thread consumed Using thread consumption ratios Coats Seamworks Thread Calculator Access Coats Seamworks Thread Consumption Methods In today ? s competitive marketplace there is a need for tight cost control A realistic estimation of potential thread requirements for particular garment styles or contracts will not only end up saving you money but also enable you to use a superior thread for the same cost thereby not compromising on garment quality Several factors determine the extent of thread consumption in any sewn product such as stitch type seam type material thickness number of layers construction and SPI stitches per inch However these factors are not constant with the di ?erent style preferences Hence thread consumption is never standard for sewn product categories such as shirts trousers and footwear There are two methods generally used to calculate the amount of thread in a seam and hence the thread consumption in the sewn product By measuring the actual amount of thread consumed By calculation using thread consumption ratios Measuring Actual Thread Consumed A speci ?ed length of a given seam is measured and then the thread is pulled out of this length We can use the amount pulled out of this speci ?ed length to calculate the ratio of thread consumed in the entire seam By dividing the amount of thread by the seam length we get the ratio of thread consumed If we multiply this factor times the total length of seam we can determine the total thread consumed for that seam Example Length of seam cm metre Stitch class -Thread Chain stitch Length of seam for which thread is removed cm Needle thread removed cm Needle thread factor Looper thread removed cm Looper thread factor Total Needle thread cm x cm CTotal Looper thread cm x cm Total thread consumed cm Add wastage cm x cm Generally to wastage of thread is added to the consumption derived This wastage occurs due to shop- oor conditions like machine running thread breakage repairs etc The above example shows the total thread consumed for one type of stitch class in a garment By following a similar procedure you can calculate the thread consumed for di ?erent stitching operations in a garment Thread Consumption Ratios The easier method is to use the generally applicable Thread Consumption Ratios for the various stitch types that are listed in the table below By relating these ratios to the length of seams using each stitch type total thread consumption can be calculated Stitch Class Description Total Thread Usage cm per cm of seam Thread Ratio No of Needle s Needle Thread Looper Under incl Cover Threads Lockstitch Chainstitch Two Thread Chain Stitch Zigzag Lockstitch Two Thread Overedge Stitch td Three Thread Overedge Stitch Four Thread Mock Safety Stitch Five Thread Safety Stitch Three Thread Covering Stitch Four Thread Covering Stitch Five Thread Covering Stitch Note The above ratios are arrived at with a stitch density of stitches per cm stitches per

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