Cut order planning

Optimizing cut order planning in apparel production using evolutionary strategies... 

Cut order planning (COP) is the first stage in the production workflow of a typical apparel manufacturing company, as shown in Fig. 5.1. It is a planning process to determine how many markers are needed, how many of each size of garment... 

The COP usually begins with a retail order comprising the quantities, sizes and colours of garments to be manufacmred. The following example demonstrates how a cut order plan is derived. For simphcity, only the quantities of garments and sizes are considered. The details of the customer order are as follows ... 

Formulation of the cut order planning (COP) decision-making model... 

L, = estimated maximum number of lays in the cut order plan Hmax maximum allowed ply height... 

Fp = total fabric cost for the cut order plan Fp = total labour cost for the cut order plan = total machine cost for the cut order plan F = total cost for the cut order plan O = fitness of the cut order plan... 

Equation 5.1a explains that the total material cost used for a production order depends on the total number of garments and fabric ply spread, which is determined by the cut order plan, the fabric length of each garment used (calculated by the fabric yield dozen per dozen divided by 12), and the fabric end allowance of each of the lays. 

In the genetic synthesis of the binary string representing the cut order plan, two possible kinds of encoding methods are considered due to search space discrepancy. 

Jacobs-Blecha C., Ammons J.C., Schutte A. and Smith X, 1998. Cut order planning for apparel manufacturing. HE Transactions, 30,79-90. 

Table A1.1 COP generated by industrial practice using commercial COP software Lay Cut order plan...

The key decision points in the cutting room of apparel manufacture include cut order planning, marker planning, and spreading and cutting scheduling. 

Human Solutions provide technology solutions for a number of areas in the apparel PD process. The company provides body-scanning solutions (both laser-based and depth-sensor-based), 2D and 3D CAD solutions, a web-based sizing and fit solution, a PLM solution, a cut-order planning solution, a marker solution, and a digital virtual try-on solution. 

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