Case Study 1 - Runner Systems Comparison

Before
( Cold runner)
No. of cavity 8
Material used PC
Material cost (Est.) US$ 3.00/kg
Qty/Month/Mould Customer Input
After
( Mini runner)
Product application: Medical
Runner System

Runner weight
(Material)

Cycle time
(Machine)

 Productivity/day
Before Cold runner 0,195 g/pc 2,5 sec/pc 33,523 pcs
After Mini runner 0,0975 g/pc 1,88 sec/pc 44,578 pcs

Approx.saving

(cost of material @ US$ 3.00/kg& molding machine @ US$ 20/hr)

 0,0975 g/pc (50%) 0.62 sec/pc (25%) 11.055pcs (33%)
US$ 0.000293 /pc US$ 0.00344 /pc
Total saving (Material + Machine) US$ 0.003733 /pc  
MSK mini runner system cost US$ 3,900
Estimated ROI

ROI =

  • MSK minirunner system cost
  • Total saving x Qty/mth
 1.7 months
Approx.saving (Total saving x Qty/mth x 12)
Year 1 – US$ 23,070 Year 2 – US$ 26,878