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REFERENCE NUMBER: C-4085

GREENVILLE CONTINUOS INDIGO & SULPHUR AND MERCERIZING DYEING LINE, YEAR RECONDITIONED 2004

 

GREENVILLE CONTINUOS INDIGO & SULPHUR AND MERCERIZING DYEING LINE

IN 20 ROPES

YEAR RECONDITIONED: 2004

AND THEN IT STOPPED ON 2009

STILL ON MILL FLOOR

 

A-BALL WARPING MACHINES:

OFFER 001

RED-CHATWOOD BALL WARPER

MODEL: WC 480

YEAR: 1991

MAX. DIAMETER: 1200mm

TRAVERSE MAX.1200mm

MAX. WEIGHT: 816 KGS

ELECTRONIC CONTROL

2 ROLLERS WITH SENSOR

FOR AUTOMATIC REGULATION

AND CONSTANT AND PERIPHERIC WINDING SPEED

AND TENSION YARN FROM CREEL

QUANTITY: 1

 

OFFER 002

REED-CHATWOOD V CREEL

MODEL: LVC/A

YEAR: 1991

WITH ELECTRONIC TENSION REGULATION

504 POSITIONS WORKING

504 POSITIONS STORAGE

GAUGE 340mm X 340mm

80-WOOD LOG

QUANTITY: 2

 

OFFER 003

INDIGO & SULPHUR AND MERCERIZING ROPES DYEING LINE:

YEAR: 1972

YEAR RECONDITIONED: 2004

GREENVILLE

ROPES RANGE 20 ROPES

THIS ROPE RANGE HAS THE FLEXIBILITY TO PRODUCE 11 DIFFERENT DYEING PROCESS

QUANTITY: 1

 

COMPLETE OF:

OFFER 004

CREEL FOR 20 BALLS WARP POSITIONS

QUANTITY: 1

 

OFFER 005

ROPES YARN INTRODUCTION

AND DRAGGING CALENDER

QUANTITY: 1

 

OFFER 006

TANK1 - SODAING, IMBIBITION AND PURGING TANK

WITH LIQUID CIRCULATION

AND FILTERING GROUP

WITH SQEEZING PADDER FOR 10000 KGS

IN UPPER POSITION

QUANTITY: 1

 

OFFER 007

STEAMER

WITH VERTICAL PASSAGES OF FABRIC BY 6 UPPER

AND UNDER 5 CYLINDERS

CAP.L.M.40

QUANTITY: 1

 

OFFER 008

TANK2- FIXING, WASHING, INDIGO DYEING TANK

WITH SQEEZING PADDER FOR 10000 KGS FOR EACH TANK

QUANTITY: 1

 

OFFER 009

8 LONGITUDINAL FINNED CYLINDERS FOR OXIDIZATION OF INDIGO-DYED YARNS

FABRIC CAPACITY 28 LINEAR METERS

QUANTITY: 1 SET

 

OFFER 010

TANK3 - NEUTRALIZATION, WASHING AND INDIGO DYEING

WITH SQEEZING PADDER 10000 KGS

IRON AISI 316 FOR EACH TANK

QUANTITY: 1

 

OFFER 011

8 LONGITUDINAL FINNED CYLINDERS FOR OXIDIZATION OF INDIGO-DYED YARNS

FABRIC CAPACITY 28 LINEAR METERS

QUANTITY: 1 SET

 

OFFER 012

TANK4-TANK5

WASHING AND INDIGO DYEING TANK

WITH SQEEZING PADDER 10000 KGS FOR EACH TANK

QUANTITY: 2

 

OFFER 013

8 LONGITUDINAL FINNED CYLINDERS FOR OXIDIZATION OF INDIGO-DYED YARNS

FABRIC CAPACITY 28 LINEAR METERS

QUANTITY: 1 SET

 

OFFER 014

TANK6-TANK7 - WASHING AND INDIGO DYEING

BLACK SULPHUR DYEING

WITH SQEEZING PADDER 10000 KGS

FOR EACH TANK

QUANTITY: 2

 

OFFER 015

8 LONGITUDINAL FINNED CYLINDERS FOR OXIDIZATION OF INDIGO-DYED YARNS

QUANTITY: 1 SET

 

OFFER 016

TANK8 - INDIGO SPECIAL COLORS DYEING

BLACK SULPHUR DYEING TANK

WITH LIQUID CIRCOLATION

AND FILTERING GROUP

WITH SQEEZING PADDER 10000 KGS FOR EACH TANK

QUANTITY: 1

 

OFFER 017

8 LONGITUDINAL FINNED CYLINDERS FOR OXIDIZATION OF INDIGO-DYED YARNS

FABRIC CAPACITY 28 LINEAR METERS

IN UPPER POSITION

QUANTITY: 1 SET

 

OFFER 018

STEAMER

WITH VERTICAL PASSAGES OF FABRIC BY 6 UPPER

AND UNDER 5 CYLINDERS

CAP.L.M.40

QUANTITY: 1

 

OFFER 019

INDIGO CIRCULATION TANK

COMPLETED WITH FILTERS, HEATING COILS AND

AUTOMATIC DOSER FOR HYDROSULPHITE CAPACIOUS FOR 200 LT.S

WITH DOSING PUMP FOR AUTOMATIC SODA DOSING

ELECTRONIC EQUIPMENT FOR CONTROL OF PH

AND REDOX PARAMETERS

QUANTITY: 1

 

OFFER 020

TANK9-TANK10 - INDIGO DYEING

BLACK SULPHUR DYEING

WITH SQEEZING PADDER 10000 KGS

FOR EACH TANK

QUANTITY: 2

 

OFFER 021

8 LONGITUDINAL FINNED CYLINDERS FOR OXIDIZATION OF INDIGO-DYED YARNS

QUANTITY: 1 SET

 

OFFER 022

TANK11-TANK12-TANK13 - HOT WASHING (AND/ OR INDIGO DYEING)

TANK WITH SQEEZING PADDER 10000 KGS

WITH INOX STEEL HOOD AND ASPIRATION FAN

ALL INSIDE AND OUTSIDE TANKS AND CYLINDERS ARE IN INOX IRON

ALL THE TANKS ARE THERMOREGULATED

EACH TANK IS COMANDED BY MOTOR POWER INVERTER

QUANTITY: 3

 

OFFER 023

RAMALLUMIN DRYING CYLINDERS

YEAR: 1972

YEAR RECONDITIONED: 2002

PART OF TEFLONED CYLINDERS

ALL CYLINDERS STEAM HEATING THERMOREGULATED EXIT

20 COILER SYSTEM FOR CANS

DIAMETER: 1200mm X H.800mm

FOR DYEING ROPES

PANEL ELECTRONIC COMPUTERIZED

AND ELECTRIC POWER FOR ALL FUNCTIONS OF THE LINE

ELECTRONIC CONTROL OF THE TENSION OF THE YARN

WITH ELONGATIONS IN %

BETWEEN THE DIFFERENT POINT

MOISTURE CONTROL

QUANTITY: 36

 

OFFER 024

CANS STORAGE

DIAMETER: 1200mm X H.800mm

INCLUDING-CABIES-PIPING

QUANTITY: 60

 

OFFER 025

INOX IRON CONTROL PANEL FOR THE DYEING PROCESS

QUANTITY: 1

 

OFFER 026

INOX IRON CONTROL PANEL FOR THE SPEED REGULATION

QUANTITY: 1

 

OFFER 027

INOX IRON CONTROL PANEL FOR THE COLORS KITCHEN

COLORS AUTOMATIC ELECTRONIC KITCHEN

QUANTITY: 1

 

OFFER 028

COMPOSED WITH:

CAPACIOUS FOR DARK INDIGO SALVAGE FOR 3500 LTS EACH

QUANTITY: 6

 

OFFER 029

CAPACIOUS FOR DARK INDIGO SALVAGE FOR 10000 LTS EACH

ALL THE CAPACIOUSES ARE IN INOX IRON

AND ARE PROVIDED WITH THE ELECTRIC AGITATOR

PART OF THEM ARE THERMOREGULATED

QUANTITY: 6

 

OFFER 030

DIRECT WARPER MACHINES FOR REBEAMING:

REED-CHATWOOD CHAIN BEAMERS DIRECT WARPERS

MODEL: SBB

YEAR: 1991

MAX. SPEED 410 M/MIN

BEAM FLANGE

DIAMETER: 1000mm

BEAM MAX. WEIGHT: 907 KGS

FOR REBEAMING FROM CANS

WITH ROPES DYEING

TO REED-CHATWOOD CHAIN BEAMERS

WITH AUTOMATIC ELECTRONIC PREFEEDER ACCUMULATOR

WITH 2 POSITIVE ROLLERS

FOR ELECTRONIOC CONTROL OF CONSTANT TENSION

AND PERIPHERIC SPEED ROPES

QUANTITY: 1

 

OFFER 031

NUOVA FORMIA CHAIN BEAMERS DIRECT WARPERS

YEAR: 1987

MAX. SPEED: 410 M/MIN

BEAM FLANGE DIAMETER: 1000mm

BEAM MAX. WEIGHT: 907 KGS

FOR REBEAMING FROM CANS

WITH ROPES DYEING

TO NUOVA FORMIA CHAIN BEAMERS

WITH AUTOMATIC ELECTRONIC

PREFEEDER ACCUMULATOR

WITH 2 POSITIVE ROLLERS

FOR ELECTRONIOC

CONTROL OF CONSTANT TENSION

AND PERIPHERIC SPEED ROPES

QUANTITY: 5

 

OFFER 032

WARP BEAMS FLANGE DIAMETER: 1000mm

INSIDE DISTANCE FLANGE TO FLANGE: 1600mm

FOR EXIT CHAIN BEAMERS AND FEEDING CREEL ROTAL

SIZING MACHINE

SPARE PARTS EXISTING IN THE COMPANY

QUANTITY: 100

 

OFFER 033

SIZING MACHINE

ROTAL SIZING MACHINE

YEAR: 1990

QUANTITY: 1

 

COMPOSED WITH:

OFFER 034

FEEDING CREEL FOR 16 POSITIONS FOR BEAMS FLANGE

DIAMETER: 1000mm X INSIDE

DISTANCE FLANGE TO FLANGE 1600mm

QUANTITY: 1

 

OFFER 035

SIZE TANK WITH DOUBLE GROUP OF DOUBLE SQEEZING

3 CYLINDERS EACH SET GROUP

HIGH PRESSURE TYPE

YEAR: 1999

COMPLETE

QUANTITY: 2

 

OFFER 036

DRYER-GROUP MODEL

OF 16 DRYING INOX CYLINDERS

DIAMETER: 800mm

PART OF THEM TEFLONED

WITH SIDE COVERINGS AND ASPIRATOR

QUANTITY: 1

 

OFFER 037

AUTOMATIC BEAMING MACHINE FOR BEAMS

WIDTH: 2600mm

FOR FLANGE DIAMETER: 1200mm

COMPLETED WITH ELECTRONIC CONTROLS, ETC

QUANTITY: 1

 

OFFER 038

SIZING KITCHEN

COMPOSED OF INOX

1 TANK FOR SIZE PREPARATION

CAPACITY: 1000LTS

AND CAPACIOUS FOR COOKING AUTOCLAVE OF 1000 LTS

AND OF 2 STORAGE RESERVE SIZING CAPACIOUS FOR 1500 LTS

COMPLETED WITH ELECTRIC PANEL

WITH THERMOREGULATION, ETC

QUANTITY: 1

 

QUANTITY: 1 LINE

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TT-6598 MTU 20V4000L64FNER TR OPEN TYPE NATURAL GAS GENSET, 2.5 MW, 50 Hz, 1500 RPM, YEAR 2024 1. MTU 20V4000L64FNER TR OPEN TYPE NATURAL GAS GENSET 2. 1 UNIT 400 V 3. 2 UNITS 6.3 KV Learn More

TT-6597 MTU OPEN TYPE NATURAL GAS GENERATORS, 1.5 MW, 50Hz EXCELLENT FULL DESCRIPTION OF A GENERATOR QUANTITY: 10 Learn More

TT-7680 SIEMENS SST 400 CONDENSING STEAM TURBINE, YEAR 2011, 50/60Hz, 30 MW SIEMENS SST 400 YEAR 2011 TYPE: SST 400 CONDENSING STEAM TURBINE WITH FOUR BLEEDS AND ONE EXTRACTION TURBOSE OUTPUT: (AT GENERATOR TERMINALS) NORMAL 30 MW MAXIMAL 31.88 MW MINIMAL 4.5 MW QUANTITY: 4 Learn More

TT-3206 COGNETEX INTERSECTING DRAWING FRAME COMPLETE SET, YEAR 1986 ITEM 001 REBREAKER BLENDER DRAWING FRAME COGNETEX MODEL SMC 400, 11V YEAR 1986 QUANTITY: 4 ITEM 002 1ST PASSAGE: GILL BOX COGNETEX, MODEL SC 400 11 VA, YEAR 1986 WITH AUTOLEVELLER QUANTITY: 1 ITEM 003 2ND PASSAGE: GILL BOX COGNETEX, MODEL SC 400 22 V, YEAR 1986 QUANTITY: 1 ITEM 004 2ND PASSAGE: GILL BOX COGNETEX, MODEL SC 400 22 V, YEAR 1986 QUANTITY: 1 ITEM 005 3RD PASSAGE: GILL BOX COGNETEX, MODEL SC 400 22 V, YEAR 1986 QUANTITY: 1 ITEM 006 3RD PASSAGE: GILL BOX COGNETEX, MODEL SC 400 22 V, YEAR 1986 QUANTITY: 1 Learn More

REFERENCE NUMBER: M-5158 (1212CVPGXX11) L COMPLETE TERRY WEAVING PLANT 1 WEST POINT DIRECT WARPER WORKING WIDTH 1.8M, FLANGE DIAMETER BEAM OUTPUT 940 MM, PRESSURE ROLLER 1 WEST POINT V-CREEL, 504 ENDS, 504 SPARE ENDS, PITCH 400 MM, WP ELECTRO SENSE 1 WEST POINT DIRECT WARPER, WORKING WIDTH 1.8M, FLANGE DIAMETER BEAM OUTPUT 940 MM, PRESSURE ROLLER 1 WEST POINT V-CREEL, 640 ENDS, 640 SPARE ENDS, PITCH 450 MM, WP ELECTRO SENSE 1 WEST POINT SIZING UNIT, 10 POSITION CREEL, WORKING WIDTH 1.8M, DIAMETER 940 MM SINGLE SIZE BOX, ROLLER WIDTH 1.8 M, SINGLE SQUEEZING 10 DRYING CYLINDERS, TEFLON COATED, PARRAFIN WEST POINT HEAD STOCK, WORKING WIDTH 2.7 M, FLANGE 1250 MM 1 WEST POINT SIZING UNIT, 10 POSITION CREEL, WORKING WIDTH 1.8M, DIAMETER 940 MM SINGLE SIZE BOX, ROLLER WIDTH 1.8 M, SINGLE SQUEEZING 8 DRYING CYLINDERS, 7 TEFLON COATED, PARRAFIN WEST POINT HEAD STOCK, WORKING WIDTH 3.0 M, FLANGE 1250 MM 1 WEST POINT SIZING UNIT, 8 POSITION CREEL, WORKING WIDTH 1.8M, DIAMETER 940 MM SINGLE SIZE BOX, ROLLER WIDTH 1.8 M, SINGLE SQUEEZING 7 DRYING CYLINDERS, 6 TEFLON COATED, PARRAFIN WEST POINT HEAD STOCK, WORKING WIDTH 2.7 M, FLANGE 1250 MM 1 SIZE KITCHEN , 5 STAINLESS STEEL MIXING TANKS WITH HEATING 7 MOTOCONO REMAIN WINDERS, 4 POSITIONS EACH 1 WARP BEAM STORAGE, 6 ROWS, 4 LEVELS, 14 M LENGTH 3 SHELVES SINGLE SIDED, 2 SHELVES DOUBLE SIDED WITH HUBTEX WARP BEAM LIFTER, MODEL 20TS 62 SULZER TERRY PROJECTILE LOOMS WITH JACQUARD (8) MODEL P7100 B330 F4 EP J D1, YEAR 4X 1989, 2X 1990, 2X 1991 WORKING WIDTH 3,3 M / 130” (7) STAUBLI E-JACQUARD CX-870, YEAR 1998-2004, 2688 HOOKS, CONTROLLER JC-5 (1) STAUBLI E-JACQUARD CX-860, YEAR 1997, 2688 HOOKS, CONTROLLER JC-4 (M/C 1989) GROUND AND PILE WARP BEAM 940 MM DIAMETER (2) MODEL P7200 B330 F4 J Q D1, YEAR 1X 1991, 1X 1995 WORKING WIDTH 3,3 M / 130” STAUBLI E-JACQUARD CX-870, YEAR 2004, 2688 HOOKS, CONTROLLER JC-5 GROUND AND PILE WARP BEAM 940/1250 MM DIAMETER (6) MODEL P7100 B330 F4 J D1, YEAR 1X 1991, 1X 1992, 4X 1994 WORKING WIDTH 3,3 M / 130” (4) STAUBLI E-JACQUARD CX-860, YEAR 1994, 2688 HOOKS, CONTROLLER JC-4 (2) STAUBLI E-JACQUARD CX-870, YEAR 2004, 2688 HOOKS, CONTROLLER JC-5 (M/C 1990/91) GROUND AND PILE WARP BEAM 940 MM DIAMETER (4) MODEL P7250 B330 F4 J D1, YEAR 2X 2000, 2X 2001 WORKING WIDTH 3,3 M / 130” STAUBLI E-JACQUARD CX-870, YEAR 2X 2001, 2X 2004, 2688 HOOKS, CONTROLLER JC-5 GROUND AND PILE WARP BEAM 940/1250 MM DIAMETER (5) MODEL P7100 B390 F4 EP J D1, YEAR 1X 1991, 1X 1992, 2X 1994, 1X 1995 WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD CX-870, YEAR 2003/2004, 2688 HOOKS, CONTROLLER JC-5 GROUND AND PILE WARP BEAM 940 MM DIAMETER (1) MODEL P7100 B390 F4 EP J D1, YEAR 1992 WORKING WIDTH 3,9 M / 153” SCHLEICHER MECHANICAL JACQUARD 3-08, YEAR 1990, 896 HOOKS CAM MOTION, 6 LEVERS INSTALLED, 4 FRAMES GROUND AND PILE WARP BEAM 940 MM DIAMETER (4) MODEL P7100 B390 F4 EP J D1, YEAR 1X 1992, 3X 1994 WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD LX-1602, YEAR 2006/2008, 3072 HOOKS, CONTROLLER JC-6 GROUND AND PILE WARP BEAM 940 MM DIAMETER (6) MODEL P7100 B390 F4 EP J D1, YEAR 1X 1992, 4X 1993, 1X 1994 WORKING WIDTH 3,9 M / 153” STAUBLI MECHANICAL JACQUARD CR-520S, YEAR 1993/94, 1344 HOOKS GROUND AND PILE WARP BEAM 940 MM DIAMETER (1) MODEL P7100 B390 F4 EP J D1, YEAR 1994, WORKING WIDTH 3,9 M / 153” STAUBLI MECHANICAL JACQUARD CR-520, YEAR 1995, 1344 HOOKS GROUND AND PILE WARP BEAM 940 MM DIAMETER (2) MODEL P7100 B390 F4 EP J D1, YEAR 1995, WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD LX-1600, YEAR 2006, 3072 HOOKS, CONTROLLER JC-5 GROUND AND PILE WARP BEAM 940 MM DIAMETER (4) MODEL P7100 B390 F4 J D1, YEAR 1995 , WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD CX-860, YEAR 1996, 2688 HOOKS, CONTROLLER JC-4 GROUND AND PILE WARP BEAM 940 MM DIAMETER (1) MODEL P7100 B390 F4 J D2, YEAR 1995 , WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD CX-960, YEAR 1996, 3072 HOOKS, CONTROLLER JC-4 GROUND AND PILE WARP BEAM 940 MM DIAMETER (8) MODEL P7200 B390 F4 J Q D1, YEAR 6X 1996, 2X 1997, WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD CX-870, YEAR 1998, 2688 HOOKS, CONTROLLER JC-5 GROUND AND PILE WARP BEAM 940/1250 MM DIAMETER (8) MODEL P7250 B390 F4 J D1, YEAR 6X 1997, 2X 1998 , WORKING WIDTH 3,9 M / 153” (4) STAUBLI E-JACQUARD LX-1600, YEAR 2000, 3072 HOOKS, CONTROLLER JC-5 (M/C 1997) (4) STAUBLI E-JACQUARD CX-870, YEAR 2000/01, 2688 HOOKS, CONTROLLER JC-5 (M/C 1997/98) GROUND AND PILE WARP BEAM 940/1250 MM DIAMETER (1) MODEL P7250 B390 F4 J D2, YEAR 1999 , WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD LX-1600, YEAR 2002, 3072 HOOKS, CONTROLLER JC-5 GROUND AND PILE WARP BEAM 940/1250 MM DIAMETER (1) MODEL P7250 B390 F4 J D3, YEAR 1999, WORKING WIDTH 3,9 M / 153” STAUBLI E-JACQUARD LX-1600, YEAR 2002, 3072 HOOKS, CONTROLLER JC-5 GROUND AND PILE WARP BEAM 940/1250 MM DIAMETER ALL MACHINES WITH 4 COLORS, AVERAGE 3 WEFT FEEDERS (ROH CHRONO HS AND SIMILAR), MIN. 3 CENTRAL TUCK IN UNITS PER MACHINE, SIDE TUCK IN UNITS, USTER LOOM DATA E-JACQUARD M/C WITH ELECTRONICALLY CONTROLLED COLOR SELECTION (EXCEPT 8 MECHANICAL M/CS) SPLIT BEAM EXECUTION, 1.5 PILE BEAMS, 1.5 GROUND BEAMS ON-LOOM TAKE-UP, 1.5 CLOTH ROLLS, 4 WEFT FEEDERS, 4 DROP WIRE BARS APPROX. 9000 DROP WIRES AND 4500 HEDDLES, LOOMDATA APPROX. 80% PLATINES INSTALLED STARTES OR STAUBLI HARNESS, ONE LIETTY GANTRY FOR TWO MACHINES LOOM POWER 5 OR 6 KW, JACQUARD POWER 2 KW 5 TONELLO AT GARMENT WASHING AND BLEACHING MACHINES MODEL G510, YEAR: 1 X 2002, 2 X 2003, 1 X 2004, 1 X 2007, TEMPERATURE 98C , CAPACITY 500 KG.EACH, TONELLO CONTROLS DIRECT STEAM OPERATED, CURRENTLY ALL ARE CONNECTED TO A CENTRAL DOSING SYSTEM (BUT EACH HAS ITS OWN DOSING SYSTEM AND CAN WORK AS INDEPENDENT M/C) FULL DRUM (NOT DIVIDED), 4 WATER ENTRIES AND 2 DRAINING OPENINGS CAPABLE OF WASHING, BLEACHING AND WATER EXTRACTION, HEAVY DUTY (SUITABLE FOR JEANS) 1 TONELLO AT GARMENT WASHING AND BLEACHING MACHINES MODEL G1 50 HS, YEAR 2007, TEMPERATURE 98°C, CAPACITY 50 KG. TONELLO CONTROLS, DIRECT STEAM OPERATED, AIR PRESSURE 7 BAR, HYDRAULICS 3 BAR, STEAM 10 BAR, FULL DRUM (NOT DIVIDED), 4 WATER ENTRIES AND 2 DRAINING OPENINGS CAPABLE OF WASHING, BLEACHING AND WATER EXTRACTION, HEAVY DUTY (SUITABLE FOR JEANS) 2 TRIVENETA GARMENT DRYERS, TYPE E550 PV YEAR 2001 MODEL 550 P CAPACITY 500 KG. EACH, DRYING CYCLE TIME IS HALF OF THE TONELLO = EACH MACHINE CAN SERVE 2 TONELLO MACHINES - SEMI AUTOMATIC LOADING AND DISCHARGING, STEAM OPERATED ITEMIZED SALE IS POSSIBLE – AGAINST OFFERS AVAILABLE IMMEDIATELY – STOPPED ON MILL FLOOR Learn More

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.”

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