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Common Preservation Method for PVA Sponge Roller

A well packed and properly store PVA sponge roller being quoted with 6 months life span, what are the preservation method that would able to achieve this storage life span?

Common PVA Sponge Roller Characteristic

PVA sponge roller is a soft and porous nature, PVA sponge roller has been widely used in most of the cleaning process.  PVA sponge only appears to be soft material while under wet condition, while the sponge roller being dry out, it will turn harder and harder.  The dry PVA sponge roller could be soaked in the water for several hours for getting back it soft nature.

For a demanding cleaning process, the PVA sponge roller requires to maintain at a consistent condition to assure cleaning ability.

PVA Sponge Roller Life Span

PVA sponge roller at dry condition could be more easy for packaging and storage, however most of the PVA sponge roller for cleaning process requires to pack at wet condition, this will lead to more demanding packing condition.

At wet condition, PVA sponge roller always advises with 6 months life span.  One of the worry for longer life span is the growth of bacteria.  For exceptional case, PVA sponge roller could be able extend the life span to 9 months or even 12 months (1 year) with prolong gamma ray radiation during the sanitizing stage, but normally we don’t recommend to extend the life span to 12 months.

Once the bacteria growth, field engineer is able to see dark spot appear on the sponge roller however sometime the bacteria colony may not easy be identified but during the cleaning process, the bacteria colony will be flush away from the PVA sponge roller and left over on the cleaned substance.

Storage Condition

A PVA sponge roller should be kept in a room temperature and not direct exposure to sunlight, better still to keep in dark area.  Sunlight and temperature will definitely age the PVA Sponge roller faster than anyone could expect.  An aging PVA sponge roller will leach out more PVA particle during cleaning process and shorten the sponge roller life span.

Packaging Process

PVA sponge roller packaging image

PVA sponge roller packaging image

In order to maintain the moisture level for the PVA sponge roller, the PVA sponge roller will be packed with double packing bag.  The inner layer bag is a PE bag and outer layer is Nylon bag.

An anti-oxidant will be placed in between the packaging bag, meanwhile a pink colour oxygen indicator will also include in between the packaging for monitoring if any air leak persist.  The indicator will change to purple colour if leak does happen.

Sanitizing Process

In order to have better control of bacteria growth, PVA sponge roller will send to ultra-violet or even expose to gamma ray sanitizing process.  This gamma ray sanitizing process mainly is to kill the bacteria in the PVA sponge roller and to ensure the PVA sponge roller life span.

In short, a PVA sponge roller that gone through a proper cleaning, sanitizing process, packaging and scrutinize storage condition is the key factor to ensure the sponge roller life span.

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