Mocon Dansensor Lippke 4500 - Creep2 Fail Test

Dansensor A/S COPYRIGHT © P/N 330654-E 01/2018
Lippke 4000/4500 EN User Guide 45
Creep2Fail test
The Creep2Fail is test is similar to the Creep test, but it uses a test pressure between 95%-100% of the
burst pressure. The test pressure should be high enough to cause a slow but progressive failure during
the specified test time. The Creep2Fail test is compliant with ASTM F1140.
CAUTION! It is possible that the package will burst during a Creep2Fail test. Please note
that the pressure may not drop to a low level immediately after the test.
NOTE! When testing filled packages, precautions may be necessary to ensure that the
product does not contaminate the operator or the system. Depending on the package
contents, the use of safety glasses may be advisable. A protective hood placed over the
package may offer additional protection.
A Creep2Fail test is divided into 2 phases:
 The package is inflated to the test pressure.
 The test pressure is maintained for a fixed period of time.
The results from the Creep2Fail test are:
• PASS - if the package bursts within the set time limits
•FAIL - if the package bursts outside the set time limits
CAUTION! If the package did not burst, it is still under pressure! Remove the package
carefully; a sudden pressure drop will occur when it is removed.
Pressure
Time
Test pressure
= Inflating to test pressure
Limit +
(Upper-Limit)
Limit -
(Lower-Limit)
FAIL FAILPASS
= Testing (Creep Time)
[mbar]
[sec]
1
12
2