Model Persediaan Produk dan Bahan Kemasan Terintegrasi (Studi Kasus PT Indomex Dwijaya Lestari)
Abstract: One of the factors
to increase the competitiveness is the price of product. One of the factors
that affect the product price is inventory cost. Shortages inventory can result
in the cessation of the production process so that inventory is one of crucial
issue in the company's operation while overstock had an effect on high costs.
This research aimed to obtain integrated inventory model between products and
packaging materials to minimize the total cost of inventory at PT Indomex
Dwijaya Lestari considering safety stock. Data used in this research are the
major and minor setup cost, production cost (one cardboard products) , sales
data of mineral water for cup and bottle products from January 2011-April 2013
, data of production bottle mineral water for cup and bottle products from
January 2011-April 2013, and the price of packaging materials . Then, data is
processed to obtain the minimum inventory cost by using a phased approach and
the simultaneous approach (using the software LINGO 11.0) for inventory model
that considers safety stock and inventory model without considering the safety
stock.Results of this research obtained an integrated inventory model between
products and packaging materials that considering safety stock and without
considering safety stock in PT Indomex Dwijaya Lestari. Based on the
calculation, the result is valid. The proposed inventory costs are cheaper than
the company's current inventory costs. The cost of the company's current
inventory is Rp. 15.020.370,09 considering safety stock per month . Inventory
costs in the company without considering safety stock is Rp 13.651.301,74 per
month. The cost of inventory using gradual approach is Rp. 4.328.441,38 per
month considering safety stock and Rp. 2.745.085,15 per month without
considering safety stock. The cost of inventory using the simultaneous approach
is Rp. 3.543.637,00 per month considering safety stock and Rp. 3.543.637,00 per
month without considering safety stock.
Penulis: Nilda Tri Putri,
Jonrinaldi, Yohanna Safari
Kode Jurnal: jptindustridd150579
