Please note that some shielding fabrics are not washable at all, and some can be hand washed only. Please read and follow washing instructions that come with your product.
Poor water quality will damage Silver.
In particular Sulphur, high Fluoride, and low pH will react strongly with Silver and destroy conductivity and shielding performance.
Test your tap water on a small fabric swatch before washing your fabric/garment:
1- soak a small fabric swatch in tap water for 1 hour.
2- look for color change in the water or swatch, especially blackening.
3- air dry the swatch and check for conductivity (by touching an Ohm meter to 2 points on the fabric)
If color change or loss of conductivity occurs, DO NOT use tap water to wash/rinse your fabric. Use distilled or deionized, reverse osmosis water.
Use Texcare to help protect the Silver in the shielding fabric. Washing will eventually degrade all fabrics with Silver fibers and reduce shielding performance. Discoloration over time is normal.
Note: Except for full roll orders, fabrics are folded for shipping.
If you require un-creased materials for your application, please add the "roll charge" option and we will ship your fabric rolled on a core.
There is a $10 roll charge.
Minors defects (such as small pulls, small holes, or minor discolorations) are a natural part of the production of these high tech fabrics.
Manufacturers allow defects up to 1% of the area of the fabric. We find that actual defects are much less than that, but are impossible to avoid entirely.
Accessories which can be used with Shielding Fabrics:
FABRIC SAMPLER BOOKLET
"Get Samples of All Our Fabrics"
Can't decide which fabric is right for your application? Want to see and feel the fabrics before you decide? In this booklet you get swatches of each fabric, along with specifications and application suggestions. Swatches are approximately 2 inches. Ni/Cu/Co tape, Threads, Hook & Loop, and Copper Wire Mesh not included in standard sampler, so if you need these, be sure to specify. If you need larger pieces for your testing, you can order as little as 1 linear foot of any material (see above).
Booklet includes a coupon worth $25 towards any fabric from our line. Good for 1 year.
Laundry Detergent For Shielding Textiles With Silver Or Stainless Steel Threads.
Special recipe detergent preserves the shielding performance, saves the environment and is suitable for many allergy sufferers.
After many years of experience with shielding fabrics we found out that some laundry detergents are bad for the shielding attenuation. In addition, customers who suffer from MCS (Multiple Chemical Sensitivity syndrome) reported some brands cause an undesirable odor. This new laundry detergent, developed in cooperation with a prestigious manufacturer of eco-detergents, will not react with our Silver or stainless steel shielding fabrics which are washable.
It contains no fragrances, coloring agents, complexing agents, preservatives, enzymes, genetic engineering, petrochemicals, and all ingredients are 100 % biodegradable.
1 liter is enough for 20 loads. The dosage is independent of the water hardness. Pour 50 ml TEXCARE per load in the detergent drawer or put it straight in the drum. Select delicate cycle with washing at 30°C. Can also be used for hand washing. Please take note of the fabric care label, respective to washability, ironing and drying!
Soap from rapeseed oil 5-15%, sugar surfactant 5-15%, coconut oil alcohol sulphate 5-15%, vegetable alcohol (ethanol) 1-5%, sulphated castor oil <1%, citrate <1%, water up to 100%. Ingredients Include: Aqua, Potassium Soap, Alkylpoly-glucoside C8–16, Sodium C 8–14 Fatty Alcohol Sulfate, Alcohol, Sulfated Castor Oil, Potassium Citrate.
Now, also available in powder form (1 Kg):
TexCare powder1 Kg size(Cat. #A289-P) .............. $17.95
ELECTRIC PAINT AND ADHESIVE
Great Way to Connect Leads to a Conductive Fabric
Working without alligator clips or snaps? This nontoxic, solvent free and water soluble material spreads easily and dries quickly to form a conductive bond between most surfaces. Just squeeze a little bit onto your fabric, embed the bare copper wire lead into it and wait about an hour. It adheres well to a wide range of synthetic and natural fabrics. Note that Electric Paint is water soluble, washing with soap and water will remove any paint which has been applied. If you want to make it more durable, you can use waterproofing spray to protect the surface of the fabric. Use it to make conductive traces, repair circuit boards, even make smart textiles!
The paint’s conductive properties do not degrade over time. In-house samples demonstrate that the material can last years if treated properly and kept dry. Electric Paint is well suited for screen-printing with meshes ranging from 43t to 90t. The paint is slightly resistive- at approximately 55 ohms per square. The conductivity of Electric Paint increases as it dries, therefore wait until it is completely dry to test your projects. 10ml squeeze tube. Black.
Electric Paint (Cat. #A701) ............. $12.95
Need a ground cord?
12-foot long ground cord, alligator clip on one end bites onto fabric, 3-prong-style plug on the other end plugs easily into your grounded outlet. Only the round lug is connected to the wire. The 2 flat prongs are not connected to anything.
Grounding Cord, 3-prong/gator (Cat. #A295-12) ...... $8.95
Want a tidy and good looking way to attach a ground cord to a conductive fabric or plastic shield? This simple hardware combination does the trick in style. First, crimp the provided ring terminal to your ground wire. Next, punch a small hole in your conductive sheet. Pass the stud of the snap through this hole and through the ring terminal. Finally, apply the other half of the snap. Makes good contact and you can move it or remove it as needed. Snap is nickel plated for excellent corrosion resistance and is washable. Ground wire not included.
Snap/Ring Terminal Combination (Cat. #A294) ............ $2.00 per set
"2 Styles to Suit Your Needs"
Need to sew with conductive thread? Want to add a conductive stitch to a non-conductive fabric? Only need a little bit?
With this conductive thread, you can add conductivity to any fabric, make conductive traces as easily as sewing, even use it as un-insulated low voltage wiring. Great for embroidery too.
Stainless Steel with Polyester Yarn
Thick, soft blend of polyester (80%) and AISI 316L stainless steel (20%). Very strong and completely corrosion resistant. Great for applications that need machine washing or sterilization. About 200 Ohm per yard. Needs a needle with large eye. Approximately 4 yards of thread per bobbin.
Nylon 6.6 filament yarn twisted with 99% pure, ultra-fine Silver fibers
Yarn count: dtex 117/17 x2 ply (about 280/1 dtex)
Twist of single yarn: 600 tpm S
Turns of twist: 550 tpm Z
Yarn count of twist: Nm 35
Tenacity: >35 cN/Tex
Elongation: about 24% Resistivity: <2 kO/m
You get 2 bobbins in this offer. Can also be hand sewn. Hand wash, no bleach. Hang dry. Do not dry clean. Approximately 20 yards of thread per bobbin.
Bobbin Thread - Silver (Cat. #A304) ..... $13.00
"Silver Plated Nylon, bulk"
Need to sew with conductive thread? Want to add a conductive stitch to a non-conductive fabric?
With conductive thread, you can add conductivity to any fabric, make conductive traces as easily as sewing, even use it as uninsulated low voltage wiring.
66 Yarn 22+3ply 110 PET.
Resistance: <1000 Ohm/10cm
Nominal diameter: 180 microns
Yields about 2770 meters per 100g.
Supplied 100g per cone. (~2769 meters)
Conductive Thread (Cat. #A1226) … $49.95 per cone
Ni/Cu/Co FABRIC TAPE
"Conductive Adhesive Too!"
High conductivity, high flexibility fabric tape with conductive adhesive.
Nickel, Copper and Cobalt coated nylon ripstop fabric (with anti-fray) offers excellent RF shielding properties (70 dB at 1 MHz, 100 dB at 1 GHz) and electrical conductivity (surface resistivity of less than 0.1 Ohms/sq). Use it to seal gaps, seams, and edges of shielding fabrics, paints or plastics. Also can be used to create conductive pathways on surfaces or add shielding to cables and flexible conduits. Cuts easily with scissors. Extremely corrosion and tear resistant, -10 to 80°C. Only 0.005 inch thick. 1 inch wide, 25 feet per roll with paper release liner.
Please Note: Tape is made of a conductive fabric, however it is not intended for bonding fabrics.
Similar to Velcro™ but conductive. One inch wide. Excellent holding power and RF shielding. Use it to create re-sealable flaps, tubes, and seams in shielding fabrics, plastics and foils. Will conduct along its length and across the gap. Silver coated. Can be sewn in or glued, no adhesive supplied. 1 inch wide. Very unique!
Hook & Loop Fastener (Cat. #A207) ..... $21.00 / lin ft
Need large quantities? Order master rolls and save! 150 feet long. Hook only, master roll (Cat. #A207-H-roll) ..... $1181.00 / 150 lin ft Loop only, master roll (Cat. #A207-L-roll) ...... $1181.00/ 150 lin ft
QTC™: Quantum Tunneling Composite
Transforms from Insulator to Conductor with Pressure
This flexible polymer exhibits extraordinary electrical resistance change when deformed by squeezing, pulling or twisting. In practice, QTC™ can be connected in quite simple ways to create anything from switches to force sensors. In its normal, uncompressed state, QTC acts as a near perfect insulator, but as it is gradually compressed it will allow more current through until it is nearly a perfect conductor. Fun to experiment with and great for turning anything with a screw-in battery compartment into an effective dimmer switch! Can also be used between layers of conductive fabric to make variable switches and variable resistors or capacitors.
It is claimed that electrons ‘pass’ through the insulation by a process called quantum tunneling. In classical physics, the electrons cannot pass through an insulating barrier, but according to quantum theory a wave can – and this is what happens in QTC™. Another way of describing the quantum tunneling effect is to say that a non-zero probability exists of electrons one side of the insulation barrier appearing on the other side.
QTC™ can be used as a solid state switch - in the "off" state it is a good insulator and in the "on" state it is as good as a metal conductor. It can be used to detect even very small changes due to compression, tension or other stresses and it can carry significant currents allowing for the direct control of loads.
Rated for over one million compressions.
The maximum specified voltage is 40V, maximum current is 10 Amps.
Temperature variation (for a current of 1microA) shows an approximately linear increase in the resistance (R=63MOhm to R=1240MOhm) observed from 25°C to 180°C.
Each piece is 4x4x1 mm.
Shielding fabrics, paints, and plastics will usually have a conductive surface. Conductivity is important for joining shields, connecting ground cords, and determining if the material will be good for Earthing. Testing with an Ohmmeter is tricky because it only makes contact at a point. You might by chance pick a point with is conductive, or not… and get inaccurate results. This handy meter uses two parallel 2” conductive rods, mounted right on the back of the meter to make solid contact with the surface you are testing. Just turn the meter on and press it against the surface. Large LCD display shows Resistivity in Ohms (the opposite of conductivity). Ranging from 103 (very conductive) to 1012 (insulative). Display also says one of the following: CONDUCTIVE, STATIC DISSIPATIVE, INSULATIVE, so there is no question about what the numbers mean.
It includes a ground cord and can also measure the resistance to ground. If that is not enough it has a built in thermometer which reads in °F or °C. Includes backlight, HOLD feature, and one 9V battery. That’s a lot packed into one simple device. Manual and display in English.
Surface Resistivity & Ground Test Meter (Cat. #A115) ........ $49.95
What Kind of Unit is "Ohms per Square"?
Surface resistivity is measured in Ohms per square (Ohm/). Ohms are units of resistance, but what about the square?
Engineers know that you can measure surface resistivity from one point on the surface to another using an ordinary ohm-meter. Then the units would be Ohms per distance between points or Ohm/m. But this method yields very inconsistent results, especially with surfaces that are not perfectly homogeneous.
More consistent results are obtained by measuring the surface resistivity between two bars. For simplicity, two parallel bars of equal length are placed exactly 1 length apart on the surface to be measured. They form two opposite side of a square. It doesn't matter how long the bars are, since longer bars will be placed proportionally further apart. The resistance measured between the two bars in Ohms is the resistivity of the surface in Ohms per square!