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Kesava Pillai
252

Dear Friends,
1. What is the filler materials used in making muff type ear defender you have in your industry ?
2. What should be the ideal or recommended material for filler.
Let us have a clear understanding of PPE - one by one.
Regards,
Kesava Pillai

From India, Kollam
dipil
711

Dear Sir
Let me try to answer you.
1. Ear Muffs consist of two Ear-Cups that are filled with Sound-Absorbing polyurethane(PU) Foam. Each Cup also has a pad that is Foam filled. The Ear Cups are made of special ABS(Acrylonitrile butadiene styrene) plastic.
2. I think the above will fulfill the purpose of providing ear defender... The purpose of providing defender must be to bring down the noise level to 90 db or less...
With regards,
Dipil Kumar V

From India
dipil
711

Dear Sir Can you please give your comment on the right type of Ear Defenders? With regards, Dipil Kumar V
From India
Kesava Pillai
252

Dear Dipil,

The filler material in a muff type ear defender should exert uniform pressure on the periphery of the ear to have proper seal. We have to avoid leakage to the ear for ensuring absolute protection. Any form of solid material is of no use.

Because of this the filler materials recommended for muff type ear defender is mineral oil only.

Manufacturing process of ear defender with mineral oil as filler material is difficult. Most manufacturers use rubber foam or other materials. Using such equipment gives only a false sense of protection.

As for the attenuation property or test certificate I am sure you are not going to get any from them !

In one of my training sessions I had to explain this. Among the participants was a representative from a major supplier of PPE in India. During break he came and requested not to publicize such information.

Have we changed .. ?

How many safety professionals are aware of such issues.

I am sure; if this forum is taken seriously we can exchange quite useful
informations like this.

Regards,

Kesava Pillai

From India, Kollam
dipil
711

Dear Sir
Really thanks for your valuable input... It's new information for me...
In India is there any manufactorer which is providing Ear Muff with Mineral Oil as filler material in the Ear Cups...
Also whats the protection given by Ear Plugs... What should be the materil of Ear Plugs...
I am taking the discusions held in this site very serious as its helping in gaining knowledge... Hope the learning and sharing process will countinue...
With regards,
Dipil Kumar V

From India
abhaygirish
49

@ Kesava sir,
I am visiting this forum because of SUCH knowledgeablepOST .
I am always eagerly waiting for ur post/reply. Hope we will get your kind
guidance in future also via this forum
Regards,
Abhay

From India, Mumbai
digikid
Where is the oil filled ? in the muff cup or circular Ear pad? Can I fill the sponge with oil and put it in a plastic pouch, and reaffix the sponge in the cavity? Can paraffin oil be used?
From India, Mumbai
hansa vyas
198

Dear Sir, Thank you for sharing such a valuable information with us. This is really a new information i hv learnt. Let me check out in my unit what material they are procuring. Regards, Hansa
From India, Udaipur
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