Document Gz62Y62VmQ8Njwj4kyaJzMKqN
Bud
May 29, 1984
Mr. T. G. Lainas, ROVEL Tech. Serv. UNIROYAL, Inc. World Headquarters Middlebury, CT 06749
Dear Ted:
Thank you for your letter of May 10, 1984, In which you enclosed the information on the Johnson trials run in December 1982 on ROVEL capped PVC.
During your visit on 4/26/84, I told you that we would send you the 1983 extruded capped stock samples you delivered to us to our test deck for exposure, and that I would supply you with exposure numbers, so that you could reference this work in the future. The information for the October 1983 capped stock series follows:
ROVEL SAMPLE I.D.
BBH-200 NUMBER
n Gold
#3 Gold
#4 Blue
#5 Blue
#7 Brown
272.002 273.002 274.002 275.002 276.002.
These samples will be exposed on our test deck site at Norwood, Mass., and Shreveport, Louisiana on 6/1/84.
The following is the information you requested in regard to Bird*s data on the December 1982 capped stock samples. Unfortunately, it appears that we did not ex pose your PVC Sample #6, Bird Brown; therefore, the following information is for Sample #7, Bird Blue, and Sample #8, Bird Gold.
SUBSTANCE/ MONTHS/ AEX
AEX
IMPACT STRENGTH
BBH-200 NO. MANUFACTURER EXPOSURE NORWOOD SHREVEPORT NORWOOD SHREVEPORT
T40.2
Rovel Gold
12
2.41
.70
Capstock,
Sample #8
1.7B
1.78
Tested by Sample #8 Uni royal/FL
12 2.54 (Fla.)
142.2
Rovel Blue
12
1.61
3.70
Capstock,
Sample #7
1.7DB
1.5B
Tested by Sample #7 Uni royal/FL
2.97 (Fla.)
/Bird &. Son. Inc.
East Walpole. MA 02032 / Telephone (617) 668-2500
BIRD 014315
Page 2 May 29, 1984 Uni royal, Inc. I am concerned that the December 1982 samples are exhibiting brittle breaks after one year in the Dropped Dart Impact Test that we run. The magnitude of the result is normal, but we prefer to see ductile breaks rather than brittle breaks. You are wise to run chip impact tests to determine changes that are taking place, if any. Will this test show up ductile vs. brittle change in the characteristics of the panel? If you have any questions, please give me a call. Sincerely, BIRD, INC. James W. Jackson JWJ/dh cc: Mr. D. Burks - BRPT
Mr. D. Rupp - Bardstown
BIRD 014316