Decreasing cost in meterial management with the help of theory of constraints and an implementation

Meterial Management is defined as the supplyment of needs of a company that use its existent capacity inorder to produce goods and services. Theory of Constaints can be defined as a policy that finds out and tries to remove bottlenecks of the production system in a company inorder to increase the capacity.Growing requirement of consumers and competition between companies capture attention to the meterial management approach. Nowadays Companies try to discover smart ways to coordinate the meterial flow becouse consumers want to reach to the products which are cheap and high quality at the same time. Also companies want to gain profit as a result of production. At this point Theory of Constraints makes companies believe in the advantage of keeping at least one bottleneck in the system improves the capacity and adopt to the net profit approach without using accounting system.In this thesis, meterial management and the concepts were explained firstly. After explaining meterial management in general term made transition to the new approach named as Theory of Constraints and was explicated the raise of development in the production system. In the implementation part, the effect of meterial management and The Theory of Constraints on net profit with the help of the case study which was conducted at Etapak Baskı Ambalaj San. Tic. A.Ş. in Çiğli Atatürk Organize Sanayi region is analyzed.Key Words: Meterial Management ,Inventory Management Systems, Theory of Constraints, Meterial Requirement Planing, Drum-Buffer-Rope, Inventory Control.