Components of Duct Foil Tape II


Well, carriers are exclusive metal in material for any duct foil tape. The following are some main carriers that used most commonly.

Aluminum: Aluminum carriers are a versatile duct foil tape carrier, and offers corrosion resistance, conductivity, durability, and reflectance.

Aluminum/Glass: Aluminum carriers with integral glass are used in high-temperature heat reflection, with additional tensile strength.

Lead: Lead carriers serve as a moisture and radiation barrier, as well as electric and thermal conductors.

Copper: Copper carriers find purpose in EMI/RFI interference applications, as well as in electrical bonding and component mounting instances. A brass carrier adds additional corrosion resistance.

Copper/tin plating: An additional tin plating to copper carriers facilitates soldering, and also resists oxidation and corrosion.

Steel: Steel backings provide a robust surface for aggressive adhesives. Steel duct foil tape retains its integrity in extreme temperatures and environments, like nuclear, marine, aerospace, etc.

For tapes, there are two important geometrical aspects to consider: width and thickness. Length is unimportant because this is determined by the user at the point of application.

Width is the measurement across predetermined edges of the tape. Tapes can be cut by the customer to smaller widths.

Thickness is the distance between the two, flattened surfaces of the tape (carrier and adhesive). It is usually expressed in mils or thousandths of an inch, and is measured under pressure with a gauge.

Other important specifications and features relate to the strength and resistance of the tapes include:

1. Tensile strength: It is the maximum load the tape can withstand. Duct foil tapes remain uncompromised in many extreme stress situations.

2. Peel strength: It is the amount of force needed to separate two bonded surfaces. This is commonly rated in ounces per square inch to stainless steel. This is separate from the peel strength for the tape liner, which is considerably less.

3. Temperature resistance: It is the amount of heat the tape can be subjected to without compromising the tape's performance. Duct foil tapes regularly exhibit temperature ranges between -35°F to 300°F.

4. Abrasion resistance: It is the level of scratch resistance and ruggedness of the tape. Metalized backings provide durability, but may exhibit surface scratches.

5. Weather resistant: It ensures that the products are suitable for outdoor use and are resistant to ultraviolet (UV) light, cold, heat, water or other weather conditions. Besides, the reflectivity of the duct foil tape assists with its visual identification as well as UV and heat reflection.