Features of Single Needle Lock Stitch Machine

Features of Single Needle Lock Stitch Machine

Single needle lock stitch machine is called a plain needle sewing machine. Single needle lock stitch machine is mostly used as an industrial sewing machine. Modern single needle lockstitch has a thread trimmer which operates at the highest speed of its kind. Lockstitch machine is the most commonly used sewing machine in the apparel industry, especially in woven garments. Here in this article, I am going to share Features of Single Needle Lock Stitch Machine with you for a clear understanding of single needle lock stitch sewing machine.

Types of Lock stitch Sewing Machine

There are two types of lock stitch sewing machine used in a garments factory.

  1. Single needle lockstitch machine
  2. Double(two) needle lockstitch machine

Single Needle Lock Stitch Machine

Single needle lock stitch machine is stitch by one needle of a machine by lock stitch.

Double Needle Lock Stitch Machine

Double-needle /twin/two needle is a needle with a single shank and two shafts, proceed stitching with the double stitching you will get two parallel rows on the face of the fabric and a zig-zag stitch on the back of the fabric.

You may also love to read:

Parts of Single Needle Lock Stitch Sewing Machine

Different Parts of Single Needle Lock Stitch Sewing Machine

Different Parts of Single Needle Lock Stitch Sewing Machine

  1. Bobbin Winder
  2. Thread wiper device
  3. Lifting lever
  4. Hand swatch A
  5. Hand swatch B
  6. Work Clamp
  7. Knee lifter plate
  8. Power stitch
  9. Oil gauge window
  10. Oil feeding pocket
  11. Machine pulley
  12. Operation panel
  13. Cotton stand
  14. Control box
  15. Power indicator
  16. USB port
  17. Pulley cover
  18. The thread takes up cover
  19. Finger guard

Parts of Single Needle Lock Stitch Sewing Machine

Features of Single Needle Lock Stitch Machine

  1. Two thread need for a machine, one for needle and another one for bobbin
  2. Needle thread set in the upper side of fabric and bobbin thread set in the lower side of the fabric in stitch
  3. Stitching type only lock stitch
  4. Machine speed is 4000-5000 RPM
  5. 1 needle in every machine
  6. Edge cutting, automatic bobbin winding
  7. Less noise, low vibration, no radiation, and environment-friendly
  8. SPI generally 7-9
  9. Sewing Shirts, Jackets, Suits, Over-coats, Bed covers, Curtains, Children’s clothes, Bags, Leather, Wool, Chemical fiber and Canvas.

Features of Single Needle Lock Stitch Machine

Technical Specifications of Lock Stitch Machine

  1. Basic Machine Practice (Loop Exercise)
  2. Technical Specification
  3. Installation of needle
  4. Needle bar Height adjustment
  5. Hook Set Timing
  6. Feed Dog adjustment and alignment
  7. Feed Dog Eccentric cam Adjustment
  8. Pressure foot to the Pressure adjustment

Features of Single Needle Lock Stitch Machine pdf

Written by

A.M. Amirul Islam (Washim)
Email: [email protected]

Linkedin: A.M. Amirul Islam

List of Sewing Machine Used in Apparel Industry

List of Sewing Machine Used in Apparel Industry

Industrial Sewing Machine in the Apparel Industry: Nowadays different sewing machines are used in the apparel industry for a different purpose and all are an electrical sewing machine. This machine is the improved version of a traditional sewing machine. The sewing machine is being used after the industrial revolution. It is important to know all types of the sewing machine used in the garments industry if are a garment professional. If you are involved with the RMG sector, then you have to know about the sewing machine and their functions.  In this article, I made a list of sewing machine used in apparel industry.

You may also like to read: List of machine use in knitting knit dyeing and Knit garments

List of Sewing Machine Used in Apparel Industry

List of Sewing Machines Used in Garments

  1. Single Needle Lock Stitch machine (Plain machine)
  2. Double-needle lockstitch machine
  3. Three thread Over Lock Machine
  4. Four thread overlock machine
  5. Five thread overlock machine
  6. Six thread Over Lock Machine
  7. Flatlock machine
  8. Two Needle Vertical machine
  9. Single needle Chain stitch machine
  10. Two needle chain stitch machine
  11. Kansai machine
  12. Feed of the arm
  13. Saddle stitch binding sewing machine
  14. Bar tack machine
  15. Velcro attach machine
  16. Velcro automatic cutting machine
  17. Buttonhole machine
  18. Button stitch machine
  19. Eyelet hole machine
  20. Snap button attach machine
  21. Blind stitch machine
  22. Zigzag machine
  23. Label cutter machine
  24. APW sewing machine
  25. Rectangular Sewing machines
  26. Embroidery machine
  27. Automatic 2-needle Belt-loop Attaching Machine
  28. Decorative Stitch Machine
  29. Cover stitch machine
  30. Round hole machine

List of the Sewing machine used in Apparel industry pdf

Written by

A.M. Amirul Islam (Washim)
Email: [email protected]

Linkedin: A.M. Amirul Islam

Preventive Machine Maintenance Checklist for Sewing Machine

Preventive Machine Maintenance in Garments

Preventive maintenance refers to regular, routine maintenance to help keep equipment up and running, preventing any unplanned downtime and expensive costs from unanticipated equipment failure. Preventive maintenance reduces cost, reduce machine downtime. These are the reasons why preventive machine maintenance in garments is required. A sewing machine is one of the key machinery used in garments industry to make garments. Because of sewing machine breakdown, or any other mechanical problem may stop your factory production. So to reduce this problem it will be useful if you do maintenance of machine regular basis. For your convenience, I made a Preventive Machine Maintenance Checklist for Sewing Machine. Hopefully, this will help you to make a checklist and continue your sewing machine maintenance to minimize the problem. Here is the list is given below:

Preventive Machine Maintenance Checklist for Sewing Machine

Preventive Machine Maintenance Checklist for Sewing Machine

  1. Thread stand clean & tight
  2. Bobbin winder proper check
  3. Feed dog check
  4. Pressure foot check
  5. Needle plate check
  6. Needle screw check
  7. V-belt check
  8. Belt cover clean & tight
  9. Pully & pully cover check
  10. Hookset check
  11. Oil level check properly & clean
  12. Needle guard check
  13. Moving knife check
  14. Fix knife check
  15. Footrest check
  16. Headrest pin check
  17. Kneepad check
  18. Paddle mat check
  19. Ubt machine proper working & check
  20. Stand shoe check
  21. Fabric guide check
  22. Pedal chain check
  23. Looper check
  24. Waste tube check
  25. Lower knife check
  26. Upper knife check
  27. Eyeglass check
  28. Tabletop condition check
  29. Machine condition check
  30. Gauge set check
  31. Top feed dog check
  32. Gear bearing check
  33. Pressure bar/regulator check
  34. Bobbin case check
  35. Oil lubrication system checking
  36. Oil change
  37. Moto & control box clean by air pressure
  38. All moving parts checking/replacement
  39. Gear and bearing checking/replacement
  40. Hook for sharp surfaces and burrs on the hook point
  41. Check the oil levels in the machines

If you have any confusion then please let me know. I will try to clarify for your better understanding.

Preventive Machine Maintenance Checklist of Sewing Machine pdf

Written by

A.M. Amirul Islam (Washim)
Email: [email protected]

Linkedin: A.M. Amirul Islam

Sewing Defects Solve with Root Causes

Sewing Defects Solve with Root Causes and Corrective Actions

Reducing sewing defect is the key task for garments quality management and it is one of the challenging jobs. This article is all about solving sewing defects/faults. Here I have listed total 15 defects of garments, root causes and corrective action to reduce them. After reading this article hopefully, you will be able to know how it is possible to reduce Sewing Defects Solve with Root Causes.

Sewing Defects Solve with Root Causes

Sewing Defects Solving Process

In a sewing defects solving process you may commonly find the following process. This one is a continuous process where you need to follow to solve your sewing defects problem in a garments industry.

  1. Find out top defects respective areas
  2. Find out Root causes by the 6M method
  3. Taking corrective action
  4. Assign work of a responsible person
  5. Keep statistical data
  6. Follow up improvement

Sewing Defects Solving Process

Root Causes of Garments Defects

Manufacturers have to find out all causes behind defect to work on it. As a quality control person, you need to do practical work in defect occurring place to find out all the reasons behind every defect. The best method is to follow the 6M method for Cause and Effect Analysis. 6M is finding root causes against 6 criteria. 6M’s are

  • M – Machinery
  • M – Manpower
  • M – Mother-nature
  • M – Method
  • M – Materials
  • M – Measurement

Corrective Action of Sewing Defects

Corrective action is to solve or correct the problem which considers as a defect. Action should be specific and work should be divided to related responsible person. This is a very effective way to solve defects. In this article, I gave corrective action against each and every defect those normally visible. Total fifteen defects are there and for these defects what are the root cause and how we can minimize these problems are also given below in a chart.

  1. Broken stitches
  2. High-low
  3. Puckering
  4. Oil / stain / dirt / rust/spot
  5. Fullness
  6. Stitches skipped
  7. Incorrect operation
  8. Untrimmed threads
  9. Crooked
  10. Shining mark
  11. Poor repair
  12. Hole
  13. Washing effect poor
  14. Off shade
  15. Puckering

Related articles you may also like

SL Defects Root Causes  Corrective Action 
1 BROKEN STITCHES 1. Tension is too tight 1. Correct machine adjustment
2. Poor thread quality 2. Take initiative to ask the supplier for a better quality thread.
3. The wrong thread size 3. Machine maintenance team have to check every machine speed routine wise.
4. The machine running in over speed
2 HIGH / LOW 1. Operator negligence 1. Train up sewing operator for stitching incorrect seam point.
2. Marking up down 2. Marking to marked correctly, sewing supervisor is responsible for it.
3. Incorrect cut mark 3. Correct cut mark and proper use of sewing guide will be ensured.
4. Some operator not using guide
3 OIL / STAIN / DIRT / RUST/SPOT 1. Poor garments handling at Cutting and sewing 1. Proper fabrics/garments handling from fabric inspection to finishing to get rid of a spot
2. Poor machine maintenance as a result of oil leakage   2. Correct machine maintenance and oil leakage checking will be ensured by sewing maintenance team
3. A spot in washing 3. Especially spot checking after washing and keeping clean work area
4. Dirty workplace
4 FULLNESS 1. Tension too tight 1. Correct machine tension and adjustment                                                                       
2. Incorrect machine adjustment 2. Train up sewing operator of proper handling of sewing
3. Unskilled operator 3. Checking machine speed regularly
4. The machine running in over speed
5 STITCHES SKIPPED 1. Failure of hook or looper and needle to enter the loop at correct time 1. Proper hook, looper, and needle to enter the loop at a correct time
2. Irregular thread tension on upper or lower loop 2. Proper thread tension on upper and lower loop
3. Due to needle deflection 3. Needle change as per procedure
4. Wrong Seam Width 4. Keeping right seam width
6 INCORRECT OPERATION 1. Inefficient operator. Not following the approved sample 1. Proper education and counseling of Supervisor to each and every operator during the start of any operation. Ensure that stitching should follow the approved reference sample.
2. Operator not checking his own work before passing to next process  2. The supervisor should advise the operator to do self-inspection. In line, QC should check on this and make a record on those operators not doing self-inspection to check their performance.
3. Mishandling of cut panels during stitching. 3. Ensure that Sewing Supervisors are giving proper instruction to the operator for proper sewing technique
4. Negligence of Supervisor and they do not check the work of the operator. 4. Sewing QA in-charge and supervisor with coordination with GPQ team should ensure that all any operations are confirmed before bulk production to avoid any mistake.
5. In line QC not doing proper checking per operation during the in-line audit. 5. In line, QC should strictly follow the procedure of inspection.
6. Machine not properly adjusted 6. Ensure that mechanic adjust properly the machines before bulk production.
7 OIL STAIN/ DIRT/RUST 1. Poor housekeeping and handling of garments. 1. Maintain good housekeeping in the working area. Sewing & Finishing In Charge should ensure their working place is in order, neat and clean.
2. Some machines with oil leakage     2. Educate and train quality inspector for the proper inspection method.
3. Lacking proper machine maintenance  3. Maintenance department should ensure that every machine will have a maintenance checkup once a week. Ensure proper oiling level to be maintained to prevent leaking of machine oil.
4. Dirty workplace  4. Application of scrap paper under the presser foot of sewing machines after the day’s work so that machines will oil leakage can be traced.
5. Negligence of Quality Inspector to identify the defect during final checking 5. No idle machines in Sewing Line & Cover all the idle machines
6. No garments to put around the machine head
7. An operator should clean the machine before and after use
8. Cover input box and machines after working time
9. Do not sleep on top of garments
8 UNTRIMMED THREADS 1. Carelessness of Quality inspector. Not following the proper method/sequence of inspection 1. Motivation and training of quality Inspector for proper work attitude
2. If found excess thread operators/workers are pulling and breaking it instead of cutting the excess thread ends 2. Conduct training for all quality for proper inspection method. Ensure to follow the proper sequence of inspection in order not to miss any process
3. Operator not doing self- trimming after the process is finished 3. QAD In charge should check and monitor the work of inspectors. All garments found with the uncut thread based on inspection report must be advised to all concerned operators  and sewing supervisors for proper corrective action to avoid garments passed to next process with the uncut thread
4. Improper method of trimming. 4. Ensure that workers are following the proper method of trimming and operators are doing self-trimming. The quality inspector should check this during the in-line audit
5. Not following the proper method
6. Improper finishing
9 CROOKED 1. Mishandling of the operator. 1. Proper training for an operator for correct material handling technique. Ensure that pattern and marking guide is accurate. Ensure appropriate presser foot is used
2. Not maintain the proper sewing procedure 2. Motivation and training of Quality Inspector on proper work behavior. Ensure that proper method of inspection is being followed all the time.  GPQ and QAD In charge should conduct an audit every hour to check the quality.
3. Lack of concentration of quality inspector
10 SHINING  1. Carelessness of presser. Lack of concentration 1. Motivation and training of presser for proper ironing method and technique
2. Overheated iron and steam control sometimes malfunctioned 2. Before start ironing garments, first, check if the iron surface is clean. Ensure that the ironing board is well padded
3. Ironing is too heavy and applies too much pressure 3. Use proper temperature during iron. Ensure that steam amount is appropriate and functioning properly
4. Iron must heat completely before use. Ensure to use iron shoes at all times
5. Follow correct iron method and ensure not to put heavy pressure
11 POOR REPAIR 1. Unskilled repairing operator 1. Train up repairing operator
2.Poor superstation 2. Strengthen supervision  and quality checkpoint
3.Production pressure 3. Reduce workload
12 HOLE 1. Poor garments handling at Cutting and sewing 1. Proper garments handling in every section up to finishing
2. A sharp edge in the washing machine and scratch 2. Checking with washing about sharp tools and scratch using in the washing machine
13 WASHING EFFECT POOR 1. Improper washing 1. Train up washing team especially on bottom washing
2.Unskilled washing operator 2. Strengthen quality checkpoint in washing factory
3. Poor washing quality checkpoint 3. Will arrange a meeting with washing factory management to improve washing quality
14 SHADE OFF 1. Improper washing 1. Train up washing team especially on bottom washing
2. Unskilled washing operator 2. Strengthen quality checkpoint in washing factory
3. Denim wash performance not in up to the mark 3. Will arrange a meeting with washing factory management to improve washing quality
4. Fabrics team working to fix shading issue in fabrics stage and as well as bulk washing
15 PUCKERING 1. Incorrect machine adjustment 1. Need correction of machine adjustment
2. Tension too tight 2. Keep accurate stitch tension
3. Machine not adjusted with fabric thickness 3. Machine adjust with fabric thickness

If You like this article then please do not forget to give your valuable feedback.

Sewing Defects Solve with Root Causes and Corrective Actions pdf

Written by

A.M. Amirul Islam (Washim)
Email: [email protected]

Linkedin: A.M. Amirul Islam