Electronic Box Compression Testing Machine Permanent Compression
KJ-3091 is used to do rubber static state compression test,take the
standard sample,put it in the panels, tighten the screw,and
compress it to a certain ration,and put it in a oven,after rule
time,take the sample out, Dismantle the sample,cool it for about 30
minutes,and measure the thickness,and substitute it in the
compression and transformation formula.
Heating time(70 ℃--22hr, 100℃--70hr)
Compression and transformation formula:
Thickness before compression-Thickness
after compression/Thickness before compression-Thickness of
A,ASTM 45 below 45-65 65-85 85 above
B,JIS 40 below 41-60 61-80 81 above
|Compression Ration||40％ 30％ 25％ 20％|
|Thickness of panels||7.62mm 8.89mm 9.52mm 10.16mm|
|Sample||Rubber 28 68(D)12.7mm|
Why choose us?
1. Considerate Service Different countries plugs, manually change
the-voltage from 110V to 220V, insurance indicator.
2. Excellent after sale service:
1 YEAR warranty. If you have any problems during testing process,
we promise we will give you a reply with 24 hours and solution
provide within 3 working days. What you need to do is to send us
3. Good Packaging:
Covered with air bubble film before put the machine into the wooden
case, which not only has good shock absorption, impact resistance,
heat sealing and also has the advantages of nontoxic, odorless,
moisture corrosion, good transparency etc.