Case(1) Product Development Department, Sanitary Products Manufacturing
Company B

Nonwoven mask using "ELITOLON™ X" leads easy to breath.
Make the extremely comfort mask that reduces "discomfort" and"difficulty in breathing" inherent in masks.
Generally, nonwoven mask is superior toother materials in terms of preventing thespread of droplets. On the other hand,difficulty in breathing and associateddiscomfort still remained issues thatexisted as trade-offs.
Mr. A in the Product Development
Department of Company B obtained
several samples of the melt blown
nonwoven fabric currently in use,developed and evaluated the prototype,but the performance was not as good asexpected.
At that time, Mr. A heard about the reputation of Toyobo MC's "ELITOLON™ X" from an agency.
TOYOBO MC was the first company in the industry to release activated carbon fiber about 40 years
ago (TOYOBO at that time). It entered the filter field with products that applied the fiber, and it was
now highly trusted as a professional.
"ELITOLON™ X is a non-woven fabric with high charging density, heat-resistant charge stability, lowpressure loss, and high collection efficiency. We have received many consultations from advanced
companies, and have already used dust filters for air purifiers. We thought that if we made a maskout of this nonwoven fabric, we could maintain the effect of preventing droplets withoutcompromising the ease of breathing." (Mr.A)
Mr.A evaluated the prototype using samples of the "ELITOLON™ X". As a result, it was found thatthe collection efficiency was higher than that of conventional melt blown nonwoven fabrics, while thepressure loss was lower than that of conventional melt blown nonwoven fabrics. They tried it in theproduct development department, and everyone was surprised that it was easy to breathe andcomfortable. In the evaluation of the user test, many people said that they wanted to use it every
day and buy it, so they decided to use the "ELITOLON™ X" as the next nonwoven mask.

ELITOLON™ X
An electrostatic (electret) filter developed by combining our company's uniqueadvanced polymerization technology and fiber production technology withelectrostatic charging technology.
Since the microfiber retains static electricity, dust in the atmosphere can beeffectively collected, and high collection efficiency can be achieved with lowpressure drop.

Copyright © TOYOBO MC Corporation All Rights Reserved.

Case(2) Production Technology Department, Transportation Equipment
Manufacturing Company Z

Prefilter made of「ELITOLON™ R」 to suppress the clogging of theexhaust treatment device. Replacement period tripled
Reduce the running cost of the exhaust treatment equipment,
maintaining safer measures of the factory.
Company Z introduced a commercially available
exhaust treatment system when it added a new
coating process for exterior components. However,it was revealed that the medium-performance
filter located in the front stage of the exhaust
treatment system clogged earlier than expected,
resulting in a higher replacement frequency.
Mr. T, an engineer in Z's production engineering
department, considered lowering the output of theexhaust system to reduce the load that the paintmist places on the medium-performance filter.
"However, after a trial operation, the exhaust
capacity
decreased,
andthe paint
mist
concentration in the factory exceeded the internal
standard. This would jeopardize the safety of theworkers." he said.
Mr.T who was struggling to cope. At that time, I hear a case of pre-filter from Toyobo MC. The idea
was to accurately grasp the particle size of the paint mist, and to place a pre-filter (a filter made of"ELITOLON™ R", a charged non-woven fabric) which is optimal for the particle size in the front stageof the medium performance filter.
They immediately installed a pre-filter made of "ELITOLON™ R" in the front stage of the medium
performance filter, and conducted the test. The results were clear, and clogging of the medium
performance filter caused by increasing the output of the exhaust device was greatly reduced. Even
after several days of testing, the replacement cycle was increased by three times. In addition, thismeasure did not increase the concentration of paint mist, so the level of safety measures could bemaintained firmly.
The decision was made to install pre-filters made by "ELITOLON™" on all paint lines, as this greatly
reduced running costs and ensured safety.

ELITOLON™ R
An electrostatic (electret) filter developed by combining our company's uniqueadvanced polymerization technology and fiber production technology withelectrostatic charging technology.
Since the microfiber retains static electricity, dust in the atmosphere can beeffectively collected, and high collection efficiency can be achieved with lowpressure drop.

Copyright © TOYOBO MC Corporation All Rights Reserved.

Case(3) Manufacturing Department of Electronic Components Manufacturing
Company C

A charged non-woven fabric filter with 50% reduced ventilation
resistance.To reduce electricity bills and CO2 emissions by 1.5 million
yen per year
Reduce the load of the air conditioning system and reduse thefrequency of filer replacment.
Company C is set to increase production amid risingdemand for electronic components around the world.
The company expanded its production lines and clean
rooms, but faced two major challenges.
"The air conditioning system for the expanded clean
room is at full capacity with high output. As a result,the amount of electricity used exceeded the planned
amount, resulting in more fixed costs than expected.
Energy-saving and CO2 reduction targets at factories
became difficult to achieve." (Mr. T, Group Manager,
Manufacturing Department, Company C)
Furthermore, due to continued full operation, theventilation resistance of the medium-high performance
fil ter increased faster than exp ected, and thefrequency of filter replacement increased. Each time atemporary line outage occurred, resulting in increased
downtime.
When Mr. T consulted with the air-conditioning staff of a group company, he was introduced toToyobo MC and received a proposal for a medium-high performance filter using "ELITOLON™ AT"
electrified nonwoven fabric. According to the test data, "ELITOLON™ AT" had a ventilation resistance
50% lower than the same medium-high performance filter as Company C using conventional glassfilter paper.
Mr. T immediately conducted a test run using an ELITOLON™ AT filter as one of the air conditioning
systems. The power output was adjusted to achieve the same air volume as before, and the system
was operated for several days to confirm that it could operate at a lower power output (power) than
before. After several months of operation in this condition, the increase in ventilation resistance wassuppressed, the frequency of replacement was reduced, and the increase in downtime waseliminated.
In addition, it was found that if all medium-high performance filters were replaced with "ELITOLON™
AT," electricity bills and CO2 could be reduced by approximately 1.5 million yen per year.

ELITOLON™ AT
An electrostatic (electret) filter developed by combining our company's uniqueadvanced polymerization technology and fiber production technology withelectrostatic charging technology.
Since the microfiber retains static electricity, dust in the atmosphere can beeffectively collected, and high collection efficiency can be achieved with lowpressure drop.

Copyright © TOYOBO MC Corporation All Rights Reserved.

Case(4) Design and Development Department, Filter Manufacturer EThe pleating process of the filter under higher temperature condition
leads the collection efficiency to 99.95%!
Growing Need for Air Purifiers
Meet the demands of consumer electronics manufacturers with theexpansion of production capacities!
As the need for high-performance air
purifiers increased, Company E was offered
by a consumer electronics manufacturer witha forecast that exceeded the existingproduction capes. Due to the delivery period,
there was no time to expand their equipment.
"Generally, filters for air purifiers have apleated filter material are heated to retain
their shape. The pleating speed can beincreased by raised heat temperature, but
the prototype did not meet the quality
standard. We had an agreement with theconsumer
electronics
manufacturer
toreduce the collection efficiency to 99.9%, but
no matter how many times we prototype theproduct, we could only achieve 99.8% (0.2%penetration). " Mr.M who belongs the designand development department of Company E
said.
With regard to the speed increase, the retention of the pleated shape was weak at conventional
machining temperatures, resulting in an increase in ventilation resistance. On the other hand, it wasalso found that the collection efficiency decreased due to temperature when machining at hightemperatures to enhance the shape retention. They tried using various filter materials and the results
were the same.
After that, Mr. M consulted with the person in charge of TOYOBO MC who had a business withanother filter material and learned about "ELITOLON™ X heat-resistant formula". "ELITOLN X heatresistant formula" is a filter material that can maintain its performance even at higher processing
temperatures. This enables pleating at high temperatures.
Immediately, when evaluated with a pleated sample at high temperature, it achieved a 99.95%（ penetration 0.05% ） that far exceeds the target even for post-processing dust collection
efficiency measurements.
The fact that the penetration rate has improved significantly and they have achieved our goals at
once strongly encouraged members of the Design and Development Department.

ELITOLON™ X
An electrostatic (electret) filter developed by combining our company's
unique advanced polymerization technology and fiber production
technology with electrostatic charging technology.
Since the microfiber retains static electricity, dust in the atmosphere canbe effectively collected, and high collection efficiency can be achieved
with low pressure drop.
Copyright © TOYOBO MC Corporation All Rights Reserved.

Case (5) Consumer Electronics Manufacturing R Corporation ProductDevelopment Department

The latest filter media "ELITOLON™ XC"
Improves electrostatic force and improves filter performance balance
Assumed to be a small and medium-sized restaurant.
Raises its air volume, maintaining dust collection efficiency.
Company R develops the next model ofcommercial air purifier with the concept ofstrengthening ventilation measures in winter.
Since it was targeted at relatively small-scaleeateries and clinics, They thought of making afilter that could emphasize raised air volume
whilemaintaining
thedustcollection
efficiency rather than the spec of the airpurifier.
"Althoughweproceeded
trialswithcommercially high performance filters andsome filter media, every prototype didn't
reach the target air volume at maximized
operation air volume." Mr.M ,who belongs
product development department of R
Company, said.
The embarrassed Mr.M though of TOYOBO MC that gave advice to him about filter processing.
The latest filter material, ELITOLON™ XC, was provided by TOYOBO MC. Compared to conventional
electrostatic filters, this product has dramatically increased electrostatic force, and the index of filter
performance balance (ventilation resistance and collection efficiency) is approximately 1.3 times thatof conventional filters.
Mr.M and his colleagues and TOYOBO MC immediately started working on prototype production. As aresult, they found that the filter has performance above expectations. That put them on track toimprove its air purifying speed while keeping conventional dimension of the air purifier.
Base on those results, "ELITOLON™XC" was defined as a filter for the next model. In addition,
Company R and TOYOBO MC undertaked to develop an energy saving air purifier with redesigning
the fan to take advantage of the characteristic of "ELITOLON™ XC"

ELITOLON™ XC
An electrostatic (electret) filter developed by combining our company'sunique advanced polymerization technology and fiber production
technology with electrostatic charging technology.
Since the microfiber retains more static electricity than our conventional
grades , dust in the atmosphere can be more effectively collected, andhigh collection efficiency can be achieved with lower pressure drop.

Copyright © TOYOBO MC Corporation All Rights Reserved.