What Is Type 6 Carpet?

Type 6 and Type 6,6 Nylon

• Nylon is a petroleum-based synthetic fabric invented as an alternative to silk. Nearly all nylon is either type 6 or type 6,6 nylon fiber. Type 6 nylon is formed through the co-polymerization of caprolactam, a 6-carbon molecule. Type 6,6 nylon fiber is formed by the reaction between adipic acid and hexamethylene diamine, both of which have 6 carbon atoms, hence the name "6,6." Each fiber provides slightly different characteristic in terms of performance. Type 6,6 provides greater stain resistance than type 6, and has a slightly higher melt point. However, type 6 is superior in elastic recovery, ability to be dyed, and resistance of degradation from sunlight.

Manufacture

• Two types of type 6 nylon fiber yarns, staple and bulked continuous filament (BCF), are used in carpet making. Staple yarns are produced in short lengths. These are spun and twisted to form longer threads before they’re tufted into carpets. BCF yarns are long filaments of type 6 nylon fiber that are piled together. Staple yarns allow manufacturers more style flexibility, including the ability to produce velvety plush carpet or shag or cabled textures. BCF fibers don’t shed after installation, while staple yarns do tend to shed for a short time.

Pros

• Type 6 nylon fibers are resistant to wear and abrasion and spring back to their original shape. Type 6 nylon is the strongest fiber available for carpeting, making it ideal for busy households. It can be acid dyed or solution dyed, and resists fading due to exposure to sunlight. While it is flammable and the fibers melt under direct flame, this type of carpet fiber burns slowly and is typically self-extinguishing.

Cons

• Despite their many advantages, carpets made from type 6 nylon fiber have some downsides. Type 6 nylon is melted by strong acids, such as hydrochloric acid, which is found in some cleaning products, and it is easily stained by acid dyes found in many food and drinks. Type 6 nylon fiber is also vulnerable to discoloration by chlorine bleach and is prone to static unless it is given an anti-static treatment.