Page 8 - Critical Contamination

PEEL-OFF MATS ONLY

It is commonly thought that using and hardness of the acrylic adhesive 27%
disposable, adhesive peel-off mats is applied during the coating process.
the answer to contamination control. If too thick and soft the adhesive OF FOOT AND WHEEL-BORNE
However, tests from GlaxoSmithKline transfers off the mat as people walk CONTAMINATION IS
show that peel-off mats are only 27% on it. Some peel-off mat companies PREVENTED BY
effective in preventing foot and wheel- even offer adhesive residue remover as PEEL-OFF MATS
borne contamination. they acknowledge the problem.
215,000
There are many manufacturers of PARTICLES
peel-off mats which result in variable
quality. The key concern is the thickness ARE RELEASED INTO THE
ATMOSPHERE DURING THE
PEEL-OFF MATS
THE RISKS RIP UP PROCESS

• P eel-off mats are not guaranteed
to stay adhered to the sub-floor.

• There are risks of water ingress and
microbial growth underneath.

• Corners peeling from the sub-floor
can cause tripping/Health and Safety
issues.

• Peel-off mats are prone to causing
static charges generating up to 5,000
volts per peel.

• Peel-off mats can tear overshoes, PEELING MATS CAUSE
exposing unclean surfaces. PARTICLE SHEDDING
AND RECONTAMINATION
• Adhesive from peel-off mats
can be tracked into clean room A study commissioned by a peel-off mat
environments on feet. manufacturer highlighted the problem of particle
shedding during the rip up process of peel-off mats.
• Wheeled traffic can be difficult to The tests revealed that on average, 215,000 particles
move over the peel-off mats. were released during the rip-up process – releasing
hundreds of thousands of particles back into
• Peels-off mats, in size, are much too the atmosphere.
small to effectively decontaminate.

• More often than not, multiple sheets
are peeled, wasting money and time.

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