Which type of nylon fiber development added a carbon core to reduce static electricity?

The development of nylon fibers with a carbon core, designed to reduce static electricity, is associated with third generation nylon fibers. This advancement was significant because static electricity can lead to various issues in both residential and commercial environments, such as attracting dirt and dust or causing discomfort to individuals. By integrating a carbon core, third generation fibers are able to dissipate static charges more effectively, enhancing the overall performance of the carpet in various settings.

First generation nylon fibers primarily focused on basic durability and resistance, while second generation variations began to enhance certain characteristics like stain resistance. Fourth generation nylon further advanced these properties by introducing new technologies for improved cleaning and maintenance. However, it is the third generation which specifically introduced the carbon core feature aimed at addressing static electricity, making it distinct in its application and significance in the carpet cleaning industry.