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MASK DIMENSIONS: 17.5 x 9.5mm
CAPACITY: 90 TO 110 PIECES PER MINUTE
MATERIAL: PP FABRIC
3 LAYERS
USES ULTRASONIC SEALING, 15 KHZ WHILE RUNNING
THERE IS ALUMINUM STRIP ON THE NOSE BRIDGE (ALUMINUM STRIP INSERTION)
DIMENSIONS: 7100mm x 3000mm x 1980mm
POWER: 10 KW
220 VOLTS, 5O OR 60 Hz
AIR PRESSURE: 0.6 MPA

QUANTITY: 1

ITEM 001 - MASK PRODUCTION MACHINE WITH (2) ULTRASONIC EAR STRAP WELDING DEVICES
FOR THE PRODUCTION OF SURGICAL MASKS WITH FILTRATION EFFICIENCY OF NO LESS THAN 95% (N95)
CAPACITY: 50 FOLDED N95 MASKS PER MINUTE
MASK DIMENSIONS: 175mm x 95mm
MATERIAL TYPE: 3 LAYERS OF POLYPROPYLENE NONWOVEN COMPOSITE FIBER
OPERATION CONTROLLED BY LCD TOUCH SCREEN
AUTOMATICALLY ALIGNS 3 ROLLS OF MATERIAL TO FEED IN (OUTER, FILTER AND INNER LAYERS)
PRESSES BOTH SIDES TOGETHER SYMMETRICALLY WHILE WELDING WITH ULTRASONIC HEAD
SPLITS TO 2 SERPATE WELDING DEVICES FOR EARLOOPS AND SENDS TO DIGITAL COUNTER
EARLOOPS ARE FINISHED WITH ULTRASONIC CUTTING AND WELDING
NOSE BRIDGE CAN BE PRODUCED WITH AUTOMATIC FEEDING, CUTTING AND ULTRASONIC WELDING
ULTRASONIC HEADS
VOLTAGE: 220 VOLTS
WATTS CAPACITY: 1500 WATT
FREQUENCY (KHZ): 20 KHZ
WARRANTY PERIOD FOR HEADS: 1 YEAR
COMPONENT MANUFACTURERS
SERVO MOTOR: PANASONIC / SCHNEIDER
CONTROL SYSTEM: PROPRIETARY
ULTRASONIC GENERATOR: PROPRIETARY, 220 VOLTS, 1.5 KW, 20 KHZ
SENSOR: OMRON / SICK
PNEUMATIC COMPONENT: SMC / FESTO
BELT: SAMSUNG / BANDO
MAIN BODY: PRE-MADE MATERIAL, WELDED ASSEMBLY
BEARINGS: NSK
BALL SCREWS: HIWIN
SECURITY DEVICE: SICK (SAFETY DEVICES TO PROTECT WORKERS)
TOTAL POWER: 4 KW
MACHINE MUST BE STOPPED TO FEED NEW ROLL OF MATERIAL
END OF ROLL DETECTOR INCLUDED: WHEN FABRIC IS FINISHED THE MACHINE WILL ALARM AND STOP
AIR PRESSURE: 0.6 MPa
VOLTAGE: 220 VOLTS, 60 Hz
DIMENSIONS: 6400mm x 4700mm x 1700mm
INCLUDES ELECTRONIC MANUAL BOOK (STORED ON USB MEMORY) AND WARRANTY CARD
OPTIONS (INQUIRE FOR PRICING): EAR STRAP FOLDER

ITEM 001 QUANTITY: 1 MASK PRODUCTION MACHINE AND 2 ULTRASONIC WELDING DEVICES FOR EAR STRAPS

ITEM 002 AUTOMATIC BAGGING MACHINE
SUITABLE FOR AUTOMATIC BAGGING OPERATIONS FOR VARIOUS MASK TYPES
MOTOR CONTROL SYSTEM: SERVO (3), AUTOMATICALLY SETS BAG LENGTH (UP TO 400mm) FOR SPECIFIED BAGGING LENGTH, WITH ANTI-AIR BAG , AUTOMATICALLY DETECTS PRODUCT BASE POINT AND MATERIAL POSITION, AUTOMATIC STOP WHEN OUT OF MATERIAL & STARTS WHEN MATERIAL IS PRESENT
FAST & CONVENIENT SETTING OF PARAMETERS, STORES SETS OF PARAMETERS FOR MULTIPLE PRODUCTS, OPERATOR CAN CHOOSE PARAMETERS ACCORDING TO PRODUCT SIZES
DIAGNOSTICS SYSTEM CLEARS ERROR & RESETS IN SINGLE STEP
HIGHLY SENSITIVE PHOTOELECTRIC EYE COLOR MARK TRACKER, DIGITAL INPUT SEAL/CUT POSITION MAKES SEAL & CUT POSITIONS MORE ACCURATE
TEMPERATURE CONTROLLED WITH INDEPENDENT PID, ALLOWS FOR VARIOUS MATERIALS IN PACKAGING
SIMPLE TRANSMISSION SYSTEM ALLOWS FOR EASY MAINTENANCE AND RELIABILITY
ALL CONTROLS SET BY SOFTWARE ALLOWING FOR ADJUSTING OF FUNCTIONS AND UPGRADES
MATERIALS
PVC FILM (HEAT SEALING), BOPP, OPP, CPP, ALUMINIZED PET FILM, ALUMINUM-PLASTIC FILM, PAPER FILM, PAPER GLUE, OTHER SINGLE- OR MULTIPLE-LAYERED HEAT-SEALED DIALYZABLE MATERIALS, ETC.
LENGTH OF PACKAGE BAGS: ≤400mm
WIDTH OF PACKAGE BAGS: 100 TO 165mm
HEIGHT OF PRODUCT: 55mm MAXIMUM
LENGTH OF FILM: 360mm MAXIMUM
DIAMETER OF FILM ROLL: 320mm MAXIMUM
CAPACITY/SPEED OF PACKAGING: 40 TO 230 BAGS PER MINUTE (1 TO 20 PIECES PER BAG)
POWER: 220 VOLTS, 50 OR 60 Hz, 2.4 KW
DIMENSIONS: 4050mm x 750mm x 1450mm
WEIGHT: APPROXIMATELY 300 KGS
COMPONENT MANUFACTURERS
TOUCH SCREEN: WEINVIEW
SERVO MOTOR: DORNA / WEIDE
SERVO CONTROLLER: DORNA / WEIDE
PROXIMITY SWITCH: OMRON
PHOTOELECTRIC SWITCH: OETAI
TEMPERATURE CONTROLLER: YATAI
SOLID STATE RELAY: SCHNEIDER
INTERMEDIATE RELAY: WEIDMUELLER
OPTIONS, INQUIRE FOR PRICING: STRAIGHT GRAIN SEALING, STAINLESS STEEL FRAME, CODE STAMPER (PRODUCTION DATE), EXHAUST (PINHOLE EXHAUST FEATURE)

ITEM 002 QUANTITY: 1 BAGGING MACHINE

ENTIRE LINE COMPOSED OF ITEM 001 AND ITEM 002

EFFECTIVE WIDTH: 1600mm
DAILY OUTPUT: 10,000 KGS PER DAY
WEIGHT RANGE: 10 TO 150 GSM
FILAMENT DIAMETER: 1.6 TO 2.0 DENIER
SPEED: 350 TO 400 METERS PER MINUTE
RAW MATERIAL: POLYPROPYLENE (PP)
DIMENSIONS: 35,000 X 15,000 X 11,000mm
VOLTAGE: 380 VOLTS, 3 PHASE

CONSISTING OF:

SPUNBOND EQUIPMENT

PP VACUUM SUCTION MACHINE (2)
7800 TO 900 KGS PER HOUR
AIR CAPACITY: 300 CUBIC METERS PER HOUR
POWER: 7.5 KW

MASTER BATCH DOSING UNIT (2)
ACCURACY: 0.01%

EXTRUDER (2)
DIAMETER: 130mm
SINGLE SCREW (2)
HEATING SYSTEM: ELECTRICITY
MOTOR: 75 KW

MELT FILTRATION MACHINE (2)
PIPE SIZE: 50mm
FILTER AREA: 3.5 SQUARE METERS
MELT FLOW: 650 KGS PER HOUR
DOUBLE FILTRATION CHAMBER

MELTING PUMP (2)
40 RPM
FLOW CAPACITY: 400 KGS PER HOUR
POWER: 7.5 KW

SPINNING BEAM (2)
DIMENSIONS: 1900 X 256mm
HANGER TYPE MELT DISTRIBUTION
HEATING SYSTEM: OIL
WORKING TEMPERATURE: 200 TO 260 CELSIUS

SPINNERET (4)
HARDNESS: 30
SIZE: 1900mm LONG X 256mm WIDE
HOLE DIAMETER 0.45mm
HOLE QUANTITY: 6500 HOLE PER METER

QUENCHING UNIT (2)
WORKING TEMP: 20 CELSIUS
AIR FLOW CAPACITY: 12,000 CUBIC METERS/H
AIR PRESSURE: 6500
FILTER SIZE: 80#

FILAMENT DRAFT UNITS (2)
AIR PRESSURE: 5020PA
AIR FLOW CAPACITY: 12,000 CUBIC METERS/H
INSIDE TEMP: 10 TO 25 CELSIUS
FILAMENT FINENESS: 1.6 TO 2.0 DENIER

MELT BLOWN EQUIPMENT

VACUUM SUCTION MACHINE (2)
LOAD CAPACITY: 700 TO 900 KGS PER HOUR
AIR CAPACITY: 300 CUBIC METERS/H
POWER: 7.5 KW

MASTER BATCH DOSING UNIT (2)
4 HOPPERS
200 KGS HOPPER LOAD

EXTRUDER
DIAMETER: 105mm
SINGLE SCREW
MOTOR: 18.5 KW

MELT FILTER
DOUBLE CYLINDER
HYDRAULIC
MELT FLOW CAPACITY: 450 KGS/HR
FILTER SIZE: 150mm DIAMETER
ELECTRIC HEATING

MELTING PUMP
SPEED: 40 RPM
MELT FLOW CAPACITY: 450 KGS PER HOUR
POWER: 7.5 KW

MELT BLOWN DIE SPINNARET
SPINNERET HOLE SIZE: 0.32 TO 0.35mm
HOLE DISTANCE: 40 TO 42 PER INCH
FABRIC WEIGHT: 2 TO 200 GSM

HIGH PRESSURE AIR BLOWER
AIR FLOW CAPACITY: 70 TO 100 CUBIC METERS PER MINUTE
AIR PRESSURE: 100 KPA
POWER: 200 KW

WEB FORMING MACHINE
SPEED: 100 METERS PER MINUTE

ELECTRIC TREATMENT
VOLTAGE: 220 VOLTS, 50 Hz
INPUT CURRENT: 3A
OUTPUT VOLTAGE: 60 KV
TREAT WEB WIDTH: 1.6 METERS

HOT AIR HEATING MACHINE
WORKING TEMP: 350 CELSIUS
PRESSURE: 0.8 KPA
HEATING: ELECTRIC
POWER: 200 KW

THERMAL CALENDER
PROCESSING SPEED: 400 METERS PER MINUTE
ROLLER SIZE: 2000mm LONG, 520mm DIAMETER
EMBOSSING ROLLER: 1
LINEAR PRESSURE: 30 TO 125 N/mm
HEATING SYSTEM: OIL

HYDROPHILIC MACHINE
SPEED: 400 METERS PER MINUTE
FEEDING SYSTEM: DOUBLE KISSING ROLLER
KISS ROLLER DIAMETER: 215mm
LIQUID TANK: 200 KGS WITH HEAT/WARM AND MIX

DRYING SYSTEM:
INFRARED + HOT AIR
DRIVE ROLL SIZE: 150mm
HEATING EQUIPMENT: QUARTZ HEATER, HOT AIR BLOWER, EXHAUST AIR BLOWER

INSPECTION MACHINE
EFFECTIVE WIDTH: 1600mm
INSPECTION SPEED: 400 METERS PER MINUTE
INSPECT GSM: 10 TO 40 GSM

AUTOMATIC WINDING MACHINE
SPEED: 400 METERS PER MINUTE
ROLLER DIAMETER: 2000mm
ROLLER EXCHANGE SYSTEM: AUTOMATIC
FABRIC INSPECTOR: ONLINE
POWER: 15 KW

HIGH SPEED SLITTING MACHINE
PROCESS SPEED: 800 METERS PER MIN
ROLL DIAMETER: MAX 1500mm
SLITTING WIDTH: 80mm
PAPER TUBE SIZE: 76mm DIAMETER
AUTO TENSILE CONTROL: AVAILABLE ONLINE
METER COUNTING: AVAILABLE ONLINE

OIL HEATER (4)
HEATING POWER: 60 KW
MOTOR POWER: 7.5 KW
OIL PUMP FLOW: 30 CUBIC METERS PER SECOND
PRESSURE: 0.4 KPA

WATER CHILLER
DRIVE SYSTEM: SCREW
COOLING CAPACITY: 300,000 CALORIES
TEMP: 0 TO 20 CELSIUS
POWER: 110 KW

AIR BLOWER
SPEED: 1450 RPM
AIR BLOW CAPACITY: 12,000 CUBIC METERS PER HOUR
PRESSURE: 5200 PA
POWER: 30 KW x 3, 45 KW x 1

AIR COMPRESSOR
DRIVE SYSTEM: SCREW
PRESSURE: 0.8 KPA
POWER: 15 KW

HEATING SYSTEM: ELECTRIC
TEMP: 350 CELSIUS
HEATING TIME: 6 TO 8 HOURS
POWER: 4 KW

ULTRASONIC CLEANING MACHINE
3mm THICK
SIZE: 2000 X 500mm
FREQUENCY VIBRATION: 100 KHZ
TEMP: 40 CELSIUS

ELECTRONIC PANEL BOARD

PLATFORM

3 LAYER MASKS CONSTRUCTED OF NONWOVEN AND MELTBLOWN FABRIC
MASK DIMENSIONS: 175 x 95mm (ADULT) & 145 x 90mm (CHILD)

---COMPOSED OF TWO MACHINES, AS BELOW

1) AUTOMATIC MASK LAYER MAKING AND CUTTING MACHINE
CAPACITY: 200 TO 300 PIECES PER MINUTE
INCLUDES
• MATERIAL FEEDING FRAME
• MACHINE FRAME
• ALUMINUM NOSE STRIP INSERTION
• ULTRASONIC WELDING
• CONVEYOR
DIMENSIONS: 4600 x 500 x 2100mm
WEIGHT: 300 KGS
POWER: 220 VOLTS, 50 Hz (OR AS PER CUSTOMER)

2) MANUAL EAR BAND WELDING MACHINE
CAPACITY: 30 TO 40 PIECES PER MINUTE
INCLUDES
• WORKBENCH
• LIGHT
• AIR CYLINDER
• ULTRASONIC GENERATOR
• CONTROL SYSTEM
DIMENSIONS: 800 x 500 x 1000mm
WEIGHT: 43 KGS
POWER: 380 VOLTS, 50 Hz (OR AS PER CUSTOMER)

WARRANTY: 1 YEAR FOR MAJOR COMPONENTS, LIFELONG SERVICE FOR THE USER

QUANTITY: 1 COMPLETE SEMI-AUTOMATIC LINE

REFERENCE NUMBER: T-6334
ALL KINDS OF MASK TESTING INSTRUMENTS

(SURGICAL MASK)
(DISPOSABLE SURGICAL MASK)
(MEDICAL PROTECTIVE MASK)
(DAILY PROTECTIVE MASK)

ITEM 001
COMPREHENSIVE TENSION TESTER FOR SURGICAL MASK

ITEM 002
MASK SYNTHETIC BLOOD PENETRATION DETECTOR

ITEM 003
BACTERIAL PERCOLATION EFFICIENCY (BFE) TESTER

ITEM 004
PARTICLE EFFICIENCY (PFE) TESTER

ITEM 005
RESPIRATOR RESISTANCE TESTER

ITEM 006
MASK FLAME RETARDANT PERFORMANCE TESTER

ITEM 007
FABRIC SURFACE MOISTURE TESTER

ITEM 008
MASK AIR TIGHTNESS TESTER

ITEM 009
TEMPERATURE PRETREATMENT CONSTANT TEMPERATURE AND HUMIDITY CHAMBER

ITEM 010
COLOR FASTNESS TO FRICTION TESTER

ITEM 011
TEXTILE FORMALDEHYDE TESTER

ITEM 012
PH METER

REFERENCE NUMBER: T-6335
RESPIRATORY PROTECTIVE EQUIPMENT & SELF-IMBIBITION FILTER ANTI-PARTICULATE RESPIRATOR TESTING INSTRUMENTS

ITEM 001
FIITRATION EFFICIENCY N CLASS SODIUM CHLORIDE PARTICLES, P CLASS OIL PARTICLES
PARTICLE RATE EFFICIENCY TESTER

ITEM 002
RESPIRATOR RESISTANCE TESTER

ITEM 003
BREATHING VALVE TIGHTNESS TESTER

ITEM 004
AXIAL TENSION TESTER FOR BREATHING BONNET

ITEM 005
AXIAL TENSION TESTER FOR BREATHING BONNET

ITEM 006
MASK FIELD TESTER

ITEM 007
HEADBAND TENSILE TESTING MACHINE

ITEM 008
JOINT PARTS&AXIAL TENSILE TESTING MACHINE

ITEM 009
MASK FLAME RETARDANT PERFORMANCE TESTER

ITEM 010
TEMPERATURE PRETREATMENT CONSTANT TEMPERATURE AND HUMIDITY CHAMBER

REFERENCE NUMBER: T-6336
MEDICAL DISPOSABLE PROTECTIVE CLOTHING TESTING INSTRUMENTS

ITEM 001
WATER PENETRATION RESISTANCE TESTER FOR PROTECTIVE CLOTHING

ITEM 002
MOISTURE PERMEABILITY TESTER FOR PROTECTIVE CLOTHING

ITEM 003
SURFACE MOISTURE RESISTANCE TESTER

ITEM 004
ANTISYNTHETIC BLOOD PENETRANT DETECTOR

ITEM 005
TENSILE TESTER FOR BREAKING STRENGTH AND ELONGATION

ITEM 006
FLAME RETARDANT PERFORMANCE TESTER FOR PROTECTIVE CLOTHING

ITEM 007
FRICTION ELECTRIFICATION TESTER FOR PROTECTIVE CLOTHING (FRENCH LADLE)

REFERENCE NUMBER: T-6337
DISPOSABLE MEDICAL RUBBER INSPECTION GLOVES TESTING INSTRUMENTS

ITEM 001
PLASTIC FILM THICKNESS TESTER

ITEM 002
RUBBER GLOVES TENSILE STRENGTH TESTER

ITEM 003
RUBBER GLOVES WATERPROOF TESTER

ITEM 004
RUBBER GLOVES PRETREATMENT AGING BOX

More information is available upon request.
E-mail us for price, pictures, video, or diagram.
Include our reference number

Federal health officials have now recommended that we cover our faces with fabric during the coronavirus pandemic. But what material offers the most protection?

The Centers for Disease Control and Prevention has posted a no-sew mask pattern using a bandanna and a coffee filter as well as a video on making masks using rubber bands and folded fabrics found at home.

While a simple face covering can reduce the spread of coronavirus by blocking outgoing germs from coughs or sneezes of an infected person, experts say there is more variation in how much homemade masks might protect the wearer from incoming germs, depending on the fit and quality of the material used.

Scientists around the country have taken it upon themselves to identify everyday materials that do a better job of filtering microscopic particles. In recent tests, HEPA furnace filters scored well, as did vacuum cleaner bags, layers of 600-count pillowcases and fabric similar to flannel pajamas. Stacked coffee filters had medium scores. Scarves and bandanna material had the lowest scores, but still captured a small percentage of particles.

If you don’t have any of the materials that were tested, a simple light test can help you decide whether a fabric is a good candidate for a mask.

“Hold it up to a bright light,” said Dr. Scott Segal, chairman of anesthesiology at Wake Forest Baptist Health who recently studied homemade masks. “If light passes really easily through the fibers and you can almost see the fibers, it’s not a good fabric. If it’s a denser weave of thicker material and light doesn’t pass through it as much, that’s the material you want to use.”

Researchers say it’s important to remember that lab studies are conducted under perfect conditions with no leaks or gaps in the mask, but the test methods give us a way to compare materials. And while the degree of filtration for some homemade masks seems low, most of us — who are staying home and practicing social distancing in public — don’t need the high level of protection required for medical workers. More important, any face covering is better than none, especially if worn by a person who has the virus but doesn’t know it.

The biggest challenge of choosing a homemade mask material is to find a fabric that is dense enough to capture viral particles, but breathable enough that we can actually wear it. Some items being touted online promise high filtration scores, but the material would be unwearable.

Dressing Up for Work … at Home
Yang Wang, an assistant professor of environmental engineering at Missouri University of Science and Technology, worked with his graduate students to study various combinations of layered materials — including both air filters and fabric. “You need something that is efficient for removing particles, but you also need to breathe,” said Dr. Wang, who last fall won an international award for aerosol research.

To test everyday materials, scientists are using methods similar to those used to test medical masks, which everybody agrees should be saved for medical workers who are exposed to high doses of virus from seeing infected patients. The best medical mask — called the N95 respirator — filters out at least 95 percent of particles as small as 0.3 microns. By comparison, a typical surgical mask — made using a rectangular piece of pleated fabric with elastic ear loops — has a filtration efficiency ranging from 60 to 80 percent.

Dr. Wang’s group tested two types of air filters. An allergy-reduction HVAC filter worked the best, capturing 89 percent of particles with one layer and 94 percent with two layers. A furnace filter captured 75 percent with two layers, but required six layers to achieve 95 percent. To find a filter similar to those tested, look for a minimum efficiency reporting value (MERV) rating of 12 or higher or a microparticle performance rating of 1900 or higher.

The problem with air filters is that they potentially could shed small fibers that would be risky to inhale. So if you want to use a filter, you need to sandwich the filter between two layers of cotton fabric. Dr. Wang said one of his grad students made his own mask by following the instructions in the C.D.C. video, but adding several layers of filter material inside a bandanna.

Dr. Wang’s group also found that when certain common fabrics were used, two layers offered far less protection than four layers. A 600 thread count pillow case captured just 22 percent of particles when doubled, but four layers captured nearly 60 percent. A thick woolen yarn scarf filtered 21 percent of particles in two layers, and 48.8 percent in four layers. A 100 percent cotton bandanna did the worst, capturing only 18.2 percent when doubled, and just 19.5 percent in four layers.

The group also tested Brew Rite and Natural Brew basket-style coffee filters, which, when stacked in three layers, showed 40 to 50 percent filtration efficiency — but they were less breathable than other options.

If you are lucky enough to know a quilter, ask them to make you a mask. Tests performed at the Wake Forest Institute for Regenerative Medicine in Winston-Salem, N.C., showed good results for homemade masks using quilting fabric. Dr. Segal, of Wake Forest Baptist Health, who led the study, noted that quilters tend to use high-quality, high-thread count cotton. The best homemade masks in his study were as good as surgical masks or slightly better, testing in the range of 70 to 79 percent filtration. Homemade masks that used flimsier fabric tested as low as 1 percent filtration, Dr. Segal said.

The best-performing designs were a mask constructed of two layers of high-quality, heavyweight “quilter’s cotton,” a two-layer mask made with thick batik fabric, and a double-layer mask with an inner layer of flannel and outer layer of cotton.

Bonnie Browning, executive show director for the American Quilter’s Society, said that quilters prefer tightly woven cottons and batik fabrics that stand up over time. Ms. Browning said most sewing machines can handle only two layers of fabric when making a pleated mask, but someone who wanted four layers of protection could wear two masks at a time.

Ms. Browning said she recently reached out to quilters on Facebook and heard from 71 people who have made a combined total of nearly 15,000 masks. “We quilters are very much in the thick of what’s going on with this,” said Ms. Browning, who lives in Paducah, Ky. “One thing most of us have is a stash of fabric.”

People who don’t sew could try a folded origami mask, created by Jiangmei Wu, assistant professor of interior design at Indiana University. Ms. Wu, who is known for her breathtaking folded artwork, said she began designing a folded mask out of a medical and building material called Tyvek, as well as vacuum bags, after her brother in Hong Kong, where mask wearing is common, suggested it. (DuPont, the maker of Tyvek, said in a statement that Tyvek is intended for medical apparel, not masks.) The folded mask pattern is free online, as is a video demonstrating the folding process. In tests at Missouri University and University of Virginia, scientists found that vacuum bags removed between 60 percent and 87 percent of particles. But some brands of vacuum bags may contain fiberglass or are harder to breathe through than other materials, and shouldn’t be used. Ms. Wu used a bag by EnviroCare Technologies, which has said it does not use fiberglass in its paper and synthetic cloth bags.

“I wanted to create an alternative for people who don’t sew,” said Ms. Wu, who said she is talking to various groups to find other materials that will be effective in a folded mask. “Given the shortage of all kinds of materials, even vacuum bags might run out.”

The scientists who conducted the tests used a standard of 0.3 microns because that is the measure used by the National Institute for Occupational Safety and Health for medical masks.

Linsey Marr, a Virginia Tech aerosol scientist and an expert in the transmission of viruses, said the certification method for respirators and HEPA filters focuses on 0.3 microns because particles around that size are the hardest to catch. While it seems counterintuitive, particles smaller than 0.1 microns are actually easier to catch because they have a lot of random motion that makes them bump into the filter fibers, she said.

“Even though coronavirus is around 0.1 microns, it floats around in a wide range of sizes, from around 0.2 to several hundred microns, because people shed the virus in respiratory fluid droplets that also contain lots of salts and proteins and other things,” said Dr. Marr. “Even if the water in the droplets fully evaporates, there’s still a lot of salt and proteins and other gunk that stays behind as solid or gel-like material. I think 0.3 microns is still useful for guidance because the minimum filtration efficiency will be somewhere around this size, and it’s what NIOSH uses.”

COMPOSED OF

SEMI-AUTOMATIC MASK PRODUCTION MACHINE
MASK DIMENSIONS: 17.5 x 9.5mm
CAPACITY: 80 TO 100 PIECES PER MINUTE
3 LAYERS
WITH ULTRASONIC SEALING
MATERIAL: POLYPROPYLENE FABRIC
TOTAL POWER CONSUMPTION: 3 KW
POWER SUPPLY: 220 VOLTS, 50 OR 60 Hz
DIMENSIONS: 3300mm x 630mm x 1850mm
QUANTITY: 1

EAR LOOP ULTRASONIC WELDING MACHINES
QUANTITY: 4

MASK PACKING MACHINE
QUANTITY: 1

PRODUCES FLAT MASKS AUTOMATICALLY: COILS STOCK, FOLDS AND PRESSES, MOLDS MASK, CUTS, LOADS AND WELDS EAR LOOPS, FINISHED PRODUCTS EXIT THE MACHINE
MASKS ARE COMFORTABLE, NO PRESSURE, EASY TO WEAR AND PROVIDE GOOD FILTRATION
LINE FEATURES
ULTRASONIC WELDING MACHINE
HIGH SPEED PRODUCTION: 120,000 TO 140,000 PIECES PER 24-HOUR DAY
-APPROXIMATELY 90 TO 110 PIECES PER MINUTE
MODULAR AND PERSONNEL-FRIENDLY DESIGN WITH EASY MAINTENANCE
AUTOMATIC STOP AND ALARM FEATURE FOR MATERIAL BREAKAGE AND OTHER EXCEPTIONS, WITH ON-SCREEN HELP FOR CORRECTING THE BREAKAGE/EXCEPTIONS
DIMENSIONS: 6500mm LENGTH x 2500mm WIDTH x 1950mm HEIGHT
WEIGHT: </= 5000 KG
POWER: 220 VOLTS +/- 5% , 50 Hz, GROUND PROTECTION (OR AS PER CUSTOMER)
TOTAL KW: APPROXIMATELY 8.8 KW
AIR: 0.4 TO 0.6 MP (CLEAN AIR AFTER DEWATER, OIL-LESS, FILTRATION AND PRESSURE)
MAIN ACCESSORY: AIRTAC AIR CYLINDER

QUANTITY: 1 COMPLETE LINE (2 SETS CURRENTLY AVAILABLE MARCH 17TH)