Monday, November 13, 2017

Application of Industrial Engineering in Garment Industry

Application of Industrial Engineering in Garment Industry

Abdullah Al Mamun
Assistant Manager-IE
Fareast Knitting & Dyeing Industrial ltd
E-mail: ie.mamun@fareastknit.com

Industrial engineers determine the most effective ways for an organization to use the basic factors of production - people, machines, materials, information, and energy - to make or process a product or produce a service. They are the bridge between management goals and operational performance. They are more concerned with increasing productivity through the management of people, methods of business organization, and technology than are engineers in other specialties, who generally work more with products or processes.



It is important to know why one should set up an IE department in garment factory. I have taken help of two questions to explain this topic in detail. Two questions are -

1.                  What is the application of Industrial Engineering in apparel industry?

2.                  How Industrial Engineering concepts are used by apparel manufacturers?

What is the application of Industrial Engineering in apparel industry?

Industrial Engineering concepts are used in garment manufacturing to fulfill the following purposes – 

    Ø  Monitoring production floor and having better control over the production floor.
    Ø  Improving processes and improving method of working to increase factory's overall performance and standardized garment manufacturing processes.

Overall application of Industrial engineering can be explained better by describing common tasks of the IE department. Common tasks of an IE department are as following but not limited to these

    Ø  Work measurement of sewing operations, cutting room jobs and finishing jobs
    Ø  Setting standard time for sewing operations and manual operations
    Ø  Style analysis and conducting research and development (R&D) of the styles 
    Ø  Improving method of work and design workstation 
    Ø  Production planning and factory capacity determination
    Ø  Work aids development
    Ø  Work station designing and machine layout planning
    Ø  Labor cost estimation
    Ø  Performance measuring of workers 
    Ø  Training of workers (sewing operators)
    Ø  Designing incentive scheme and calculating incentive for sewing operators
    Ø  Setting line production target of the sewing lines and chasing production from line supervisors and operators
    Ø  Application of lean tools


How Industrial Engineering Concepts are used by apparel manufacturers?

Factories those are using IE techniques mostly have a complete IE set up (department). An IE department consists of an IE managers (in-charge) and Industrial Engineers and juniors engineers. The strength of IE team widely varies based on the maturity level of the department and on the focus of application of Industrial Engineering. Without having enough team members, an IE department cannot work effectively.

Industrial Engineers are utilized in the following ways but not limited to those -

Factories apply all or few of the above listed functions to 

    Ø  Assist line supervisors by preparing resource requirement plan (machines and equipment and manpower), line setting and line balancing etc. 
    Ø  Assist production managers in target planning and production planning.   
    Ø  Help merchandiser and marketing personnel by providing labor cost and production lead time.
    Ø  Help HR department by providing operator performance level, and help in operator recruitment.
    Ø  Prepare MIS reports and show management team product status on daily basis and alert management team if their attention is needed.
    Ø  Set up standards operating procedures for new tasks, new process required for ever changing fashion products.

More than the regular jobs, IEs are also responsible for thinking of continuous process improvement. Initiation of new projects and implementation of the project that has been undertaken, showing the improvement opportunity within the factory to management team. Engineers are involved in performance improvement tasks of the cutting department and finishing department.

Companies those have limited manpower in IE team, only involves engineers for routine jobs like, making operation bulletin, thread consumption, preparing daily production reports etc.

How to Calculate Thread Consumption for Garments?

How to Calculate Thread Consumption for Garments?

Abdullah Al Mamun
Assistant Manager-IE
Fareast Knitting & Dyeing Industrial ltd
E-mail: ie.mamun@fareastknit.com


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 save you money, but also enable you to use a superior thread for the same cost, thereby not compromising on garment quality. There is standard formula for determining thread consumption for apparel products. In that formula you will get multiplying factors according to machine type and stitch class. To determine thread consumption you just need to multiply seam length with those factors. This way one can estimate total thread requirement for making a garment.


Actual thread consumption for a unit length of seam depends on following factors. 

    Ø  Stitch Classes
    Ø  Stitches per inches (SPI)
    Ø  Thickness of the seam (fabric thickness)
    Ø  Thread tension
    Ø   Thread count (thickness of sewing thread)

The thread consumption for a particular sewn product can be calculated in many ways.

Step 1:  To calculate thread ratio, you need a sewing machine, fabric and sewing thread that will be used for bulk production.

Step 2: Sew a seam of 12 cm long and take 10 cm seam out of it by trimming 1 cm from both edges.

Step 3: Unravel both needle thread and bobbin thread from the seam. Remove crimp from the unraveled thread and measure its length in cm. Now find the multiplying factor by dividing thread length with seam length. 

Using this method you can find out any types of machines’ thread consumption factors.


Note:
  1. The above ratios are arrived at with a stitch density of 12 stitches per inch.
  2. These ratios are the prescribed minimum in regular conditions and marginally vary with the factors affecting thread consumption.
  3. A certain percentage of wastage is to be added to the above ratios as per shop floor conditions. It may vary from 10% to 15%.

By this ratio we easily  calculate sewing thread consumption by using following format. 


Thursday, November 09, 2017

Working flow chart of Industrial Engineering Department

Working & Process flow chart of Industrial Engineering Department

Abdullah Al Mamun
Assistant Manager-IE
Fareast Knitting & Dyeing Industrial ltd
E-mail: ie.mamun@fareastknit.com

At present Industrial Engineering Department is one of the important department for each garments or textile factory. Today’s maximum factory is run by industrial engineers, where they have to follow a process flow chart. By which they can easily control the whole production processes. Such kinds of process flow chart has discussed in this article.
IE department in garments industries

Process Flow Chart of Industrial Engineering (IE) Department:



Negotiation with merchandiser

Garments analysis

Make P.P meeting if all required element are in housed
 
Production target
 
Set machine layout
 
Line setting

Line balancing
 
Hourly production monitoring
 
Continuous production meeting
 
Collecting production data

Preparing production report

Production report analysis
 
Report submit to factory manager

Wednesday, November 08, 2017

How to calculate the CM (Cost of Making) of a Garment?

How to calculate the CM (Cost of Making) of a Garment?

Abdullah Al Mamun
Assistant Manager-IE
Fareast Knitting & Dyeing Industrial ltd
E-mail: ie.mamun@fareastknit.com



CM (Cost of Making) calculation is very important factors for every garment industries. Factory’s costing people should know the actual calculating method for calculation the CM. Other-wise factory may fall in huge loss. So its really important to calculate the correct cost of making to get the correct costing.

Way to calculate the CM:

To find out the CM of a item you must need the following information at first…….
1)      CPM (Cost per minute) of this factory.
2)      SMV of the garment.
3)      Average line efficiency. 

Now, to find the CPM (Cost per minute) of a factory must know this information—

Ø  Monthly total expenditure of this factory. Suppose-85000000/tk.
Ø  Total number of running machine of this factory. Suppose- 1500 machine.
Ø  Total working day of the followings month. Suppose- 25 days. 
Ø  Daily working hours. Suppose- 8 hours. 

Formula for calculation CPM:



Formula for calculation CM:


CM=(SMV X CPM X 12) / Line efficiency (%) 


Example: