BARC has developed a unique and special kind of an Engineered Valveless Transparent face Mask (EVTFM) using fully indigenously developed glass filter media (HEPA). EVTFM is a high filtration efficiency face mask having features like comfortable breathing, cost effective; transparency, modular design, reusable etc. are in huge demand due to Covid-19 pandemic.

1. Very High particulate air filtration.
2. Breathing comfort due to larger breathing area.
3. Modular design of construction.
4. Transparent and ease in face reorganization.
5. Excellent sealing / leak proof.
6. Oil resistance and water repellant.
7. Low waste generation.
8. Reusable due to replaceable cartridge.
9. Compliant to available international standards for mask testing.

1. Suitable for front line workers/ medical professionals and other critical patients.
2. Useful for safe breathing in contaminated & polluted air environment like mining /automobile and nuclear industry.
3. Very useful in preventing the spread of contagious diseases like corona, flu, tuberculosis, etc.
4. Suitable for fire services professionals and traffic police.

The situation arisen due to Covid-2019 has provided a novel method to avoid contagious disease transmissions. It has been observed that usage of face masks has helped to contain the spread of the disease. Engineered Valveless Transparent Face Mask was designed and developed to address the limitations of normal face mask in term of reusability, comfort and reliability and transparency help recognition of face. As a mandate of Atmanirbhar Bharat, an engineered valveless transparent face mask (EVTFM) using fully indigenous glass fiber (HEPA) filter media, developed at BARC. EVTFM is having special and unique type of design with several implicit advantages.

In term of reliability, the life of filter cartridge is longer and not required frequent replacement. This cartridge can be replaceable with new one and avoid of throwing whole mask. This prevents the over generating the waste due to disposal of mask. In quality, the EVTFM is at par with the various international and National standards set by different agencies.

The filter media used in EVTFM is indigenously developed by BARC with low breathing resistance and high particulate efficiency ≥ 99.97% for 0.3 mm particle size. The filter media is made of glass fiber, which is water and oil repellent.

Sr. No.	Parameter	Value
1	Basic Weight	65-75 gm/cm2
2	Thickness in microns	˃300 micron
3	Particulate removal	≥ 99.97% for 0.3 mm size particles
4	Air flow Resistance @2.5 cm/sec	< 15 mm H2O
5	Uniformity	Uniform properties throughout the cross - section

1. Modular design of construction
2. Transparent and ease in face reorganization.
3. Breathing comfort due to larger breathing area.
4. High particulate air filtration.
5. Light in weight and reusable due to replaceable cartridge.
6. Cost effective.
7. Splash Proof.
8. Filtration mechanism is purely mechanical and no need to have electrostatic charge in media to trap particles.
9. Oil resistance and water repellant.
10. Low waste generation.
11. Compliant to available international standards for mask testing.

1. Suitable for front line workers/ medical professionals and other critical patients.
2. Useful for safe breathing in contaminated & polluted air environment like mining /automobile and nuclear industry.
3. Very useful in preventing the spread of contagious diseases like corona, flu, tuberculosis etc.
4. Suitable for fire services professionals and traffic police.

Space

1. Approximately 1000sq feet space will be required to set up the assembly facility (dust proof with controlled temperature (25±1°C) and humidity (<55%) with continuous electricity)

Facilities required

1. Die making machine for moulding of masks such as Surface Grinder, VMC, EDM Sparking, EDM Wirecut machine.
2. Injection Molding machine for molding of TPU based outer enclosure and Cartridge cover- Acrylonitrile Butadiene Styrene (ABS)
3. Cutting and machining set up for sizing of media in adequate form.
4. Pleating machine for pleating of media

BIS approved test set up (Optional)

1. Particulate efficiency and pressure drop test
2. Fit factor test (to check sealing or leakage)
3. Bacterial efficiency test set up

Packaging facility for packing of EVTFM/p>

1. Normal packaging facility is required.

Manpower Requirement

1. Three skilled workers and one Supervisor (Diploma in Mechanical Engineering).

Raw material Requirement

1. Raw material is easily available in Indian market.