Slide 1

Presentation on

Garments Quality Control in Sewing

Submitted To Md. Ali Azam Rokon Lecturer Dept. of Textile Engineering

Submitted ByNAMEID NOAnuvab Sen103-433-041Mahabubullah Sabuj121-170-041Khan Ahosanul Hoque121-140-041

Md. Rahat Afsary121-257-041Md. Rafiul Islam121-074-041Md. Foysal121-160-041

Quality is defined as the level of acceptance of a good or service. It is a very essential requirement for any kind of product. Every product should maintain the standard quality level. 21st century of globalization market are becoming more and more complex, thats why every industry are facing a high level of competition for their business. So the product must fulfill the customer requirement. For this reason every product should maintain the quality level. Sewing is the craft of fasting or attaching objects using stitches made with needle & thread. sewing is one of the oldest textile arts.

Objectives

Knowing the customer needDesigning to meet them.Faultless construction To maximize the production of goods within the specified tolerances correctly the first time.Certified performance and safety.suitable packaging .

Satisfaction Quality can be ensured from the customers point of view by providingRight product.Right quality.Right time.Undamaged condition.

Quality level of a garment we need to observe some specific sectorFault free fabric.Shade matching of the garments.Making the pattern as per buyer requirement.All the different parts of the garment should have the perfect size.Good stitching, seam formation should be perfect.Additional accessories such as button, zipper, tag, level is in right position.

Sewing Department Quality Stuff

Quality Control in Sewing Section

Input material checking Accessories checking Machine is in well conditionThread count checkNeedle size checking Stitching fault should be checkedGarments measurement checkSeam fault check Size mistake check

Some Defects occur in sewing section and remedies

Some place in the stitch line where the stitch does not formed Cause:-Failure of needle to enter loop at correct time.Needle deflection or bent needle.Thread loop failure due to incorrect needle size for thread size.Incorrect sewing tension in the needle.Thread loop failure due to incorrect setting of thread control mechanism.Solution:-The sewing tension in the needle should be proper.Perfect needle size for thread size.

Needle breakage defect

Cause:-Excessive tension in needle threadExcessive needle heat, groove or eye blocked with melted fabricThread fraying at needleThread trapped at thread guideThread trapping at the base of cone.Solution:The needle has to change immediately. If the scratch on the garments is very big or deep the product should be rejected.Use stronger thread or adjust tension.Reduce Increase thread guides and reduce disc tension

Oil mark in garments

Cause:- During the sewing operation oil can accidentally slick out from the machine and drop on the fabric and spotted.

Solution:-Spot lifter chemical use to remove the oil the mark of the garments. At first the spot lifting chemical spray on the garments spot then air blown by the machine. The spot remove.

Seam PuckerCause:-Fabric and / or thread instability.Poorly controlled fabric feed.Extension in sewing thread.Incorrect tension setting.Structural jamming or inherent pucker.

Solution:-Adjust feed timing and fabric control for maximum pulling of the fabric. Check tension level in the thread, Sew with minimum tension possible.Always adjust bobbin thread tension first then needle thread tension.Check if the coefficient of friction of the thread with metal is high.

Shade problemCauses:It is also may be a problem in cutting section where this parts made numbering mistake.For the lack of experience or concentration of worker and if different parts are mixed by worker.Solution: Shade problem parts are separate and actual parts are attached.

Kacha problem If unexpected parts are shown by the garments from sewing area then this problem is occurred. Causes:For lack of experience or concentration of worker. Solution: The unexpected part is cut out precisely.

Stitch line uneven Cause: This fault is occurred by operator. Solution:The stitch has to open and again sewing. Non matching thread: Some times when sewing is done, the garments and the sewing thread looked shade variation.

There are certain quality related problems in garment Color effects -Color defects that could occur are difference of the color of final produced garment to the sample shown, accessories used are of wrong color combination and mismatching of dye amongst the pieces.Sizing defects -Wrong gradation of sizes, difference in measurement of a garment part from other, for example- sleeves of XL size but body of L size. Such defects do not occur has to be seen too.Garment defects -During manufacturing process defects could occur like faulty zippers, irregular hemming, loose buttons, raw edges, improper button holes, uneven parts, inappropriate trimming, and difference in fabric colors.

Non sewing defect

Defects due to fault materials, like fabric, buttons, zipper etc.Defects due to wrong pattern, wrong marking.Defects due to wrong spreading ,wrong cutting.Defects due to wrong bundling.Defects due to staining, oil marks.Defects due to wrong ironing, wrong folding.Defects due to wrong packing etc.

Stitch defect

Skipped stitch: Missing in loop formation & speed variation in feed dog is the main cause of these defect.Staggered stitch: This type of defect occurs for thin needle if needle size and thread count are not matched and needle displaced then this defect also appear.Unbalanced stitch: This type of defect appears to un-uniform thread tension.Variable stitch: If feed dog is not in right track then this type of defect occurs.Open stitch: This type of defect occurs due to blunt needle and poor strength of sewing thread.Needle mark: Needle is the main element of sewing then wrong stitch arises then defect arises.

Various defects in garments

Broken buttonsBroken snaps Broken stitchingDefective snapsDifferent shades within the same garmentDropped stitchesExposed notchesExposed raw edgesFabric defects

HolesInoperative zipperMissing buttonsNeedle cuts / chewsOpen seamsPulled / loose yarnStainUnfinished buttonholeZipper too short.

Broken buttons

Broken snaps

Broken stitch

Defective snaps

Dropped stitch

Holes

Missing buttons

Unfinished button hole

FIve COMMON SEWING MACHINE MISTAKES & HOW TO FIX THEM

(1) The needle unthreads itself when worker start sewing only just threaded the needle and as soon as they put their foot down on the pedal the thread decides to come out of the needle. It is Simple to solve though , firstly, make sure they have a few inches of thread pulled through the needle and out towards the back of the machine before begin. Secondly and this is something it took a little while to discover when worker first began sewing check the needle is at the highest position before start stitching.

(2)The fabric is jiggling around like crazy Lower the presser foot, The presser foot holds the fabric in place stitch neatly, not free style. The stitching is really uneven.

(3)If the stitching looks loopy on one side and tight on the other, first reaction might be to blame the thread tension setting on the machine. Some times be right in which case, try adjusting the tension dial and test sewing on a scrap of fabric until the stitching looks even on both sides of the fabric. Yet often its not the tension dial that needs changing its the way threaded the bobbin, which also affects the tension.

(4) Stitching is crazy tight on the top side Again, this could need to adjust the tension dial, but before go doing that, just check that spool thread isnt caught on the little silver tension discs on top of the machine.

(5) The threads are knotting up together, This is another really common issue that threads knot up either on the fabric, or worse, they get jammed in the machine and have to yank them out or even unscrew the needle plate to get them out. Before start sewing, check that both spool and bobbin threads are sticking out towards the back of the machine otherwise they can get twisted up in the stitching.

Conclusion Quality control plays an important role in readymade garments production. Nowadays buyer requires specific quality in all major parts of the finished products. What special in this report is that the information data and description very much objective & practical. We have tried to complete this project work as much we can. It will help us to maintain the quality of the garments in garments production. Finally after completing this assignment we will get some idea about quality control of garments sewing which will help us in the future as well as in rich our knowledge.