Bladder blisters, how it happens?
Have you seen the bladder problems like this?
We received the customers’ reports of bladder defects during their accumulator maintenance services recently. They look similar with visible blisters along a line on the bladders.
We looked into the problems as well as the procedures and contacted the rubber production factory. Finally, we were able to locate the cause of the problem.
This defect is well known.
Generally, these blisters or bubbles are present in the bonding area or and sometimes on a line where the material is the weakest.
This is not a bladder defect but an express decompression, also called explosive decompression.
CASE1： Blisters distributed over the entire bladder
The bladder has numerous blisters on its surface, particularly in the connection areas. Some blisters can burst.
Cause: These blisters are generally the result of too rapid decompression of the accumulator, not allowing enough time for the bladder material to depressurize.
Note1: It’s normal for a bladder to have a few small blisters due to the manufacturing process.
Note2: It’s normal to have some marks on the bladder from the vulcanization mold. This is common for large size bladders.
Note3: It’s important to remember that blisters are a consequence of dismantling the accumulators but almost never the cause of a malfunction of the accumulator.
Solution: We recommend a very slow decompression speed during the bladder replacement. Please check our accumulator service instruction manual for details.
