Analisis Perencanaan Pengendalian Persediaan Untuk Meminimalkan Overstock Paperbag (Studi Kasus Di UD. Lestari Jaya Selalu). (Analysis of Inventory Control Planning to Minimize Paper Bag Overstock (Case Study at UD. Lestari Jaya Selalu))

Febriyanti, Amalia Rizka (2026) Analisis Perencanaan Pengendalian Persediaan Untuk Meminimalkan Overstock Paperbag (Studi Kasus Di UD. Lestari Jaya Selalu). (Analysis of Inventory Control Planning to Minimize Paper Bag Overstock (Case Study at UD. Lestari Jaya Selalu)). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

UD. Lestari Jaya Selalu is a manufacturing company that produces paper bags in sizes 25x30 and 20x25. The main problem faced by the company is the overstock of finished products that exceeds the warehouse capacity of 50,000 pcs, resulting in an actual loss of Rp175,184,000 and an opportunity cost of Rp26,277,600 or a total loss of Rp201,461,600 per year. This study aims to design optimal inventory planning and control to minimize overstock using the Material Requirements Planning (MRP) approach with the lot sizing method Lot-for-Lot (LFL), Economic Order Quantity (EOQ), and Period Order Quantity (POQ). Planning is carried out through the stages of demand forecasting, standard time calculation, preparation of the Master Production Schedule (JIP), and MRP calculation. Based on the analysis results, the LFL method was selected as the best method because it produces the lowest total inventory cost of Rp41,496,000 for both products. With the LFL method, raw material orders are made 12 times per year for main materials and 10 times per year for supporting materials, with an ordering cost of Rp273,000 per order. Safety stock is set at 7,085 pcs for 25x30 paper bags and 1,696 pcs for 20x25 paper bags. The application of the LFL method is able to save costs of Rp159,965,600 or 79.4% compared to actual conditions, so that overstock can be eliminated and the availability of raw materials to meet customer demand can be guaranteed.

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