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Yoshihiro Mizutani et al. / Energy Procedia 89 (2016) 318 – 322
Lot
Batch Production Producing several lots in a batch
Shipment Stock
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Shipment
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Single Piece Flowing Production No Production for Storing
1
2
3
4
5
Time
Fig. 2.Batch production.
6. Summary (Realizing Zero Storage of Complete Product) At Jpacks, we normally receive orders from a single sheet to several tens of thousands sheets. By combining ³3URGXFWLRQPHWKRGRISUHIHUHQWLDOO\SURFHHGRISXUFKDVHRUGHUZLWKPXOWLSOHSURFHVVHV´³3URGXFWLRQ method with every processes conducted in p DUDOOHO´DQG³6LQJOH8QLW)ORZLQJ3URGXFWLRQ´ZHPDQDJHGUDGLFDOUHGXFWLRQRI L/T of every lots, and achieved zero storage of complete product. Commonly, a corrugated cardboard factory is considered to be good when the sales-stock ratio is less than 10% at end of month inventory count. However, when there is no stocked product, it means funds equal to 10% of total
sales is raised, leading to a considerable improvement of management. Below is the formula for L/T under production methods of Jpacks. ܶ /7 ൌ ݐ V ൛σ ݐ ݐ S ሺ݊ െͳሻ ୀଵ ൟ
(1)
T L/T : Lead time, t s : Time required for arrange purchase orders in the descending order of processes, t i : Time required for each process, t p : Time required for preparation between processes, n : Number of process. In this paper, it is assumed that the time required for preparation between processes is the same. However, it is necessary to generalize following each production pattern in the future. 7. Conclusions Win the Competition by Optimizing Management Efficiency - Small businesses including Jpacks have limited management resource, and they often find themselves in a difficult situation. However, by delivering products much faster than other companies by using Jpacks Production System, which is a strength that must be fully utilized, it is possible to win the trust of users and survive the competition. By employing the proposed methods, not only it will improve the sales, but it will also create extra time and space, producing additional value to the products that will serve the customers better. In the future, we aim to popularize this Jpacks Production System and benefit many companies. References [1] Berger RW, Benbow DW, Elshennawy AK, Walker HF, Editors. The certified quality engineering handbook. 2 nd ed. Wisconsin: ASQ Quality Press; 2006. [2] Hakes C, Edited. Total quality management The key to business improvement. New York: Chapman & Hall; 1991. [3] Weil R, Maher MW. Handbook of cost management. 2 nd ed. New Jersey: John Wiley & Sons, Inc.; 2005. [4] Wood DC, Editors. Principles of quality costs. 4 th ed. Wisconsin: ASQ Quality Press; 2013. [5] Chaffey D, White G. Business information management: improving performance using information systems. 2 nd ed. UK: Pearson Education; 2010.
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