SCRAISLED CODE LETTERS FOR PROGRESS REPO~RT 66 PROMET Naohino. Tomahawk~1

Transcription

1 SCRAISLED CODE LETTERS FOR PROGRESS REPO~RT 66 PROMET 08-7 Naohino Cede Company - I-M o. Lottor 'xh~o Choo oposka Corporation - woot Point - Continontal Can Comipany, Inc. - ZopmteU P Cx'omm-g Zo~lerbach Corporation -Baltir-ors C - altirioro 2 - ga~lues& -Drosden J L-Lbanon 2 Intornational Paper Company - B~astrop I - Bastrop Georjgetovii D - Georgotoim 2 - 'jib o od Corporation - Hrritz I - Knoxvi~e - Lnhug2 U - Sylva -aelsdng~m Fibre Pref~tet Comupany -Coshocton I Worth Car'olina~ Pup Coqipen- Plymouth 3L Olin Nathieson Chciiical Corpora~tion - K~onroe - - Dbnroo 2 - Ozcona-flhinoia Glaoo Compnny - Tomahawk~ -Tomnhax-& 3 G - ig I0arnd -- Big Ivland 2 - B~ig Iamt 3 St. Joe? Paper Compnny - Port St, Joo I 0 Union Bag-Canp Payar Corporation -Savannah 2 S Woot Virg~nia Pulp and Papor Company -Covington 6 B -Covington 7 - C harloston ---

2 THE INSTITUTE OF PAPER CHEMISTRY Appleton, Wisconsin SUPPLEMENTARY REPORT ON CALIPER OF SINGLE-FACED BOARD to FOURDRINIER KRAFT BOARD INSTITUTE, INCo May, 960

3 THE INSTITUTE OF PAPER CHEMISTRY Appleton, Wisconsin This report is supplementary to Progress Report 65 of the baseline study on corrugating medium entitled, "Continuous evaluation of corrugating medium" which provides a program whereby participating mills have the opportunity to submit rolls of medium on a regular weekly schedule for evaluation with regard to physical characteristics of the medium and of the single-faced board made from the medium Specifically, each medium is evaluated for caliper, basis weight, and Concora flat crush In addition each medium is fabricated into A-flute single-faced corrugated board on the Institute's corrugator to determine its runability in terms of speed and tension, and the single-faced board obtained at maximum speed with minimum tension is evaluated for its flat crush strength This report is an extension of the baseline study described above and is concerned specifically with the caliper and uniformity of caliper of the single-faced board fabricated from each roll of medium Uniformity of caliper is generally considered to be another facet of the criteria used to evaluate the runability of corrugating medium, and the Technical Committee of the Fourdrinier Kraft Board Institute, Inc., has requested that a measurement of the uniformity of caliper be included as a part of the evaluation given each roll of corrugating medium The evaluation of the caliper and uniformity of caliper of the single-faced board made from each roll of corrugating medium was carried out using the five circular specimens that were subsequently tested for flat crush strength. Each specimen was five square inches in area They were cut at intervals of approximately two feet along the central portion

4 Fourdrinier Kraft Board Institute, Inco Page 2 of a strip of the single-faced board fabricated at maximum speed and minimum tension On each of these five specimens, caliper measurements were made on five consecutive flutes and the caliper difference between consecutive flutes was calculated, there being four calculations of differences for each specimen, The twenty-five caliper measurements (five calipers on each of the five specimens) were averaged and are reported as the caliper for each sample of medium Likewise, the twenty caliper differences between consecutive flutes (four caliper differences on each of the five specimens) were averaged, and the maximum, minimum, and average values are reported for each sample of corrugating medium. The instrument for measuring the caliper of individual flutes of single-faced board consists of a bench-type thickness gage with a pressure foot 3/8 inch in diameter and an anvil consisting of a plane circular surface 2 inches in diameter, The pressure foot is attached to a dial indicator which can be read to OoOOO inch The load on the pressure foot is grams A caliper determination is made by inserting each five-square-inch circular specimen between the pressure foot and the anvil so that the foot rests on the second flute from one end of the specimen without touching either of the adjacent flutes The 3/8-inch diameter of the pressure foot permits it to contact only one flute with easeo The specimen is pressed gently against the anvil, and the reading is then recorded As mentioned previously, five consecutive flutes through the center of each specimen are calipered in this wayo It should be emphasized that these calipers may not necessarily correspond to regular caliper measurements because of differences in load and other variables

5 Fourdrinier Kraft Board Institutes Inco Page 3 Caliper data have been obtained on the single-faced board fabricated from each of the one hundred and thirty three rolls of corrugating medium which were submitted for evaluation during the month of Aprilo Also included for purposes of convenient reference are the single-face flat crush and runability data The current machine averages for each test are summarized in Table I for Machines A through Uo A graphical presentation of the current machine caliper averages on single-faced board is shown in Figure, and a similar presentation of the current machine averages for the caliper difference between consecutive flutes is given in Figure 2o The test results obtained on the individual rolls of medium submitted by each company are given in Tables II through XXII for Machines A through U9 respectively It may be seen in Figure and Table I that the average caliper results for the single-faced boards varied from a low value of 9503 for Machine T to a high value of 97o8 for Machine Oo Likewise, from the results given in Table I and Figure 2, it may be noted that the average caliper difference between consecutive flutes ranged from a minimum of lo6 for MachinesH, L, and S to a maximum of 3o0 for Machines J and 0o The majority of the machines were associated with average caliper differences of two or lesso The differences in the area of three may be excessive

6 Fourdrinier Kraft Board Institute, Inc. Page 4 TABLE I SUMMARY OF CURRENT MACHINE AVERAGES Machine Number of Rolls Caliper, Between Consecutive Flutes, posoio A B C D o9 97o4 96o lo o o8 36o0.E F G H o8 96o4 97o I J K L o o6 lo8 3o o M N 0 P o9 97o , O ol 3208 Q R S T o , U Total 33

7 Fourdrinier Kraft Board Institute, Inc. 98 m Page 5 f 97 Q: I -J ct 96I Mach. A B C D E F G H I JKLMNOPQRSTU F n Figure Comparison of Caliper Results on d Board 3.0O I-- a-.2.5 w u 2. L- L L. K IL o. C.) U T T.0 Mach. A B C D EF G H I J K Figure 2 L MN O P QR S T U Comparison of the s Flutes of d Board

8 Fourdrinier Kraft Board Institute, Inco Page 6 TABLE II SUMMARY OF TEST RESULTS FOR MACHINE A Mill Date Roll Code Made No, Caliper, pto Flutes, Max. Mino Avo posoio at 600 fopomo), lbe/ino A- A-2 A-3 A-4 A-5 A-6 A o o4-96,2 3o 3, Ool 0,4 0,4,2 lo5 lo o o0 /2 Current Machine ALv. 96o9 lo TABLE III SUMMARY OF TEST RESULTS FOR MACHINE B B- B-2 B-3 B-4 B-5 B-6 B-7 B-8 B-9 B-0 B-ll B-2 B-3 B , ', , Oo , , o4 o9,4 lol 2, 2, lo , o5 3, 29ol o o4 Current Machine Av lo7 3009

9 Fourdrinier Kraft Board Institute, Inco Page 7 TABLE IV SUMMARY OF TEST RESULTS FOR MACHINE C Code Date Made Mill Roll No, Caliper, pto Flutes, Maxo Mino Avo posoio at 600 fopomo), lbo/ine C-l C-2 C-3 C , , 0o o2 o ,7 Current Machine Av lo TABLE V SUMMARY OF TEST RESULTS FOR MACHINE D D-l D-2 D-3 D o2 Ool 0,3 2, ,3 32, o Current Machine Ave o4 3600

10 Fourdrinier Kraft Board Institute, Inco Page 8 TABLE VI SUMMARY OF TEST RESULTS FOR MACHINE E Mill Date Roll Code Made Noo Caliper, pt. Flutes, Maxo Mino Avo posoio at 600 fopomo)g lb /ino E- E-2 E-3 E-4 E-5 E ,4 2, ,8 Ool Ool ol 200 o o Min. Min, Current Machine Av o8 290 TABLE VII SUMMARY OF TEST RESULTS FOR MACHINE F F- F-2 F-3 F-4 F-5 F-6 F-7 F o , ,0 0,9 0o4 003 lo o4 2, o Current Machine Avo

11 Fourdrinier Kraft Board Institute, Inc. Page 9 TABLE VIII SUMMARY OF TEST RESULTS FOR MACHINE G Code Date Made Mill Roll No. Caliper, pto Flutes, Max, Mino Avo posoio at 600 fepomo), lb./in. G- G-2 G-3 G-4 G-5 G-6 G o0 96o ,3 95o o o ,4 0o2 0 o2 o7 2o2 o8 2o2 34o , o0 36o0 /2 Min. Mino /2 Current Machine ALV lo8 35o2 SUMMARY OF TABLE IX TEST RESULTS FOR MACHINE H H- H-2 H~^ H-4 H-5 H , o o o o8 4o o Ool 2, lo3 o4 o o5 35o0 /2 /2 /2 Current Machine Avo 9705 lo6 3o7

12 Fourdrinier Kraft Board Institute, Inco Page 0 TABLE X SUMMARY OF TEST RESULTS FOR MACHINE I Mill Date Roll Code Made Nos Caliper, pto Flutes, Maxo Mino Avo at 600 fepomoi) posolo lb./ino I- I-2 I-3 I ,5 96o o4 4ol ,6 2,2 08 lo /2 /2 Mino Current Machine Av. 9605,8 300 TABLE XI SUMMARY OF TEST RESULTS FOR MACHINE J J- J-2 J-3 J-4 J-5 J o o o ,8 9, ,0 0, 0,4 0,4 2o2, o o9 Current Machine Avo 30o 3009

13 Fourdrinier Kraft Board Institute, Inco Page TABLE XII SUMMARY OF TEST RESULTS FOR MACHINE K '; Code Date Made Mill Roll Noo Caliper, pto Flutes, Max. Mino Av. posoi. at 600 fopomo)y lb./ino K-l K-2 K-3 K o2 97ol o2 5.6 OoO Oo0 2, /2 Current Machine Avo TABLE XIII SUMMARY OF TEST RESULTS FOR MACHINE L L-l L-2 L-3 L-4 L-5 L-6 L-7 L-8 L-9 L o o6 98o2 95o6 96o o8 97o o7 0,0 0o ,2 lo5 09 loo 204 o9 2,0 o o e I Current Machine Avo o5 /2 Mino Mino Mino Mino /2 Mino /2 /2

14 Fourdrinier Kraft Board Institute., Inc. Page 2 TABLE XIV SUMMARY OF TEST RESULTS Fn~R MACHINE M I., Mill Date Roll Code Made No. Caliper., Pt 0 Flutes, Max. Min 0 Av. Posoie at 600 fqp 0 m 0 ),q lb.a/in.a M- m-2 M-3 M-4 M- 5 M-6 M , , al o l , 5 2o4 37,8 34o Mm 0, /2 /2 Current Machine Av, TABLE XV SUMMARY OF TEST RESULTS FOR 'April, 96c. MACHINE N N- N-2 N-3 N-4 N-5 N-6 N-7 N l98o4 97o , l97o ,5 8o , o , , /2 /2 Current Machine Av. Curr 96.9 nt M chin Av,

15 Fourdrinier Kraft Board Institute, Inco Page 3 TABLE XVI SUMMARY OF TEST RESULTS FOR MACHINE 0 Code Date Made Mill Roll Noo Caliper, pto Flutes, Maxo Mino Avo posoio at 600 fopomo), Ibo/ino o o2 7o , o o8 26o o0 Current Machine ALvo ol TABLE XVII SUMMARY OF TEST RESULTS FOR MACHINE P P- P-2 P-3 P-4 P-5 P-6 P-7 P-8 P , o o o5 98o o 308 0o o o9 305 Ool o2 o9 202,8 2,7 lo4 o3 lo8 2o o ol 3o Current Machine Avo 9704 lo L

16 Fourdrinier Kraft Board Institute, Inco Page 4 TABLE XVIII SUMMARY OF TEST RESULTS FOR MACHINE Q Code Date Made Mill Roll Noo Caliper, pto Flutes, Maxo Mino Avo posoio at 600 fopomo), lbo/ino Q- Q-2 Q-3 Q o0 95o o0 Ool 0, 2,6 lo8 2.0 o Current Machine Av ,0 3.9 TABLE XIX SUMMARY OF TEST RESULTS FOR MACHINE R R-l R o OoO o , Current Machine Avo TABLE XX SUMMARY OF TEST RESULTS FOR MACHINE S S- S-2 S-3 S-4 S-5 S-6 S-7 S o o ,4 0.2,2 3.,5. lo Min /2 Mino /2 Mino /2 Current Machine Avo 96.0,6 33.3

17 Fourdrinier Kraft Board Institute, Inc. Page 5 SUMM''A.RY OF TABLE XXI TEST RESULTS FOR MACHINE T. Mill Cali- Date Roll per, Code Made No0. pto Flutes., Max. Min. Av 0 -at 600 fopomo)q lb./in. T- T-2 T-3 T o2 7o o2 3 o , Current Machine J4 LV SUMVMARY OF TABLE XX TESqT RESULTS FOR MACHINE U Aprill, 96C' U- U-2 U-3 UL-4 U-5 U l97o6 97, l96o o o ol o0 2o2 lo8 lo , Current Machine Ave C urr nt 97 M chin ol A v ,

18 I Fourdrinier Kraft Board Institute, Inco Page 6 THE INSTITUTE OF PAPER CHEMISTRY Wo No Hubert, Research Aide Container Section Ro Co McKee, Chief, Container Section (