What is Line Planning?

In this article, the line means sewing production line or production batch. Each line contains a set of machines to make garments for mass production and a set of machines vary depending on product category.

Line planning is scheduling and allocating of orders to production lines according to product setting (product is being made in the line) and due dates of production completion. A line plan defines when a style is going to be loaded to the line, how many pieces to be expected (target) from the line and when an order to be completed. For example, please refer to the following Table-1, where a simple line planning has been shown in a spreadsheet.

During booking orders or allocating orders to the production line, planners must check what is running on the line and how many days it will take to complete the running style.

The benefit of Line planning: It helps the production manager as well as line supervisor with information such as what is the daily production target for a line. They set their line (machines and manpower) accordingly. Line plan also provides information such as how many days style would run, what is the next style going to be loaded?

Table-1: Line Plan


Line 1
Line 2
Total
Date
Daily Prod.
Cum Prod.
Daily Prod.
Cum Prod.
Daily Prod.
1-Dec
loading #2341A,
Qty -3000 pieces
300
1200
300
2-Dec
200
200
300
1500
500
3-Dec
250
450
300
1800
550
4-Dec
400
850
200
2000
600
5-Dec
400
1250
loading #Polo ,
Qty -1500 pieces
400
6-Dec
400
1650
0
0
400
7-Dec
400
2050
100
100
500
8-Dec
400
2450
300
400
700
9-Dec
400
2850
350
750
750
10-Dec
150
3000
350
1100
500
11-Dec
loading #432K,
Qty -5500 pieces
400
1500
400
12-Dec
100
100
loading #YK45,
Qty -4500 pieces
100
13-Dec
250
350
200
200
450
14-Dec
500
850
250
450
750
15-Dec
500
1350
400
850
900
16-Dec
500
1850
400
1250
900
17-Dec
500
2350
400
1650
900
18-Dec
500
2850
400
2050
900
19-Dec
500
3350
400
2450
900
20-Dec
500
3850
400
2850
900
21-Dec
500
4350
400
3250
900
22-Dec
500
4850
400
3650
900
23-Dec
150
5000
400
4050
550

 Daily Prod. – Daily production or line output
Cum Prod. – Cumulative production of the style till date 

Related Articles:
How to calculate the production capacity of a factory?

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