1. IET 319 Quality Control Group Project Lowell D. Outland Jonathan Wallingford Tim Beam

2. Introduction The facility we chose is a 100% recycled cardboard paper mill located along the Ohio River in northern Kentucky, and the paper machine manufactures a sheet that is 289 inches wide. The mill produces approximately 1400 tons of recycled linerboard per day to be sent to box manufacturers to be made into packaging for consumers to purchase products from. There are no boxes made at this facility, just the brown cardboard paper linerboard used to make boxes.

3. Rationale The strength test that we observed was called “ring crush”, which tests how many boxes can be stacked one on top of another without failure of the box being observed. Therefore this is a test of Quality and reliability.

4. Procedures Condition weight is the weight of 1000 sheets, measuring 12 inches by 12 inches square at 7% moisture. This is controlled by a Measurex scanning system. The paper is tested in three positions; Front, Middle, and Back. Each position has 8 samples taken from the reel for a total of 24 samples for the entire reel.

5. Theory Statistical data is essential in analyzing, predicting with confidence, and heading off potential problems that may occur in the process that affect the product being manufactured in any industry.

6. Statistical data FrontMiddleBack REEL #'SSTARTAVGR-BARAVGR-BARAVGR-BAR 1 86787724-Mar-10 78.0911.3279.387.9776.9811.54 2 87988824-Mar-10 82.2415.4684.7311.0481.2812.02 3 89090024-Mar-10 73.5011.1674.7710.7173.8612.86 4 90291125-Mar-10 76.889.9376.987.9975.006.48 5 91392325-Mar-10 72.6511.8775.069.5472.3910.97 6 92693525-Mar-10 75.699.8475.7810.3474.199.87 7 93894725-Mar-10 74.8210.7677.3011.5175.1412.07 8 95097826-Mar-10 76.1310.0478.5210.4175.988.66 9 98099026-Mar-10 73.2114.5276.2011.0472.9713.04 10 99299829-Mar-10 71.347.7873.267.6972.459.54 11 21229-Mar-10 71.297.8772.846.0172.929.80 12 53554430-Mar-10 73.488.1575.079.9975.099.92 13 9539622-Apr-10 72.169.7173.647.9074.619.25 14 9579662-Apr-10 74.839.2877.438.6675.719.18 15 4454542-Apr-10 74.0812.5278.718.9077.239.60 16 1381472-Apr-10 73.699.1475.9310.85 74.4910.31 Average74.610.676.69.475.010.3

7. RING CRUSH TRIAL DATA RING CRUSH TRIAL DATA B 90 DEG85 DEG80 DEG75 DEG 70667479 72767277 69757675 68 7378 74767174 AVERAGE70.672.273.276.6 ST DEV2.414.821.922.07 MAX.7476 79 MIN.68667174 RANGE61055 +2 sig75.4281.8377.0580.75 -2 sig65.7862.5769.3572.45

8. Data “C” DATA C CUT TOP SIDE UPCUT BASE SIDE UP 7067 7371 7370 7269 7669 AVERAGE72.869.2 ST DEV2.41 MAX.7671 MIN.7067 RANGE64 +2 sig77.6274.02 -2 sig67.9864.38

9. Data “D” DATA D DARK STRIPE LIGHT STRIPE 7376 7375 7768 7772 7570 AVERAGE7572.2 ST DEV2.003.35 MAX.7776 MIN.7368 RANGE48 +2 sig79.0078.89 -2 sig71.0065.51

10. Reel condition weight

11. RushDrag

12. Ring crush per lb

13. Total days/ton

14. Starch lb/ton graph

15. Discussion and Recommendations Once the sample data were taken over a period of time and a period of reels, then the data can be processed and a target value can be appropriated for the product being sold. This facility uses a 95% confidence interval to sell its product and has set the value of 74 as its target for selling the L 70 grade of paper. Retest values are in place to insure Quality Control, as well as reject values. The range helps determine variability in the product and assists in determining what changes to any of the components may be necessary to enhance product quality. As you can see, statistical data is very important to the overall success in the paper making industry to assist in eliminating off quality paper, and controlling the variability in the process. Statistical data is essential in analyzing, predicting with confidence, and heading off potential problems that may occur in the process that affect the product being manufactured in any industry.