Planned product obsolescence or built-in obsolescence, is an industrial design strategy of which; the intention is a proposed product with a limited lifespan. The most common form of product obsolescence is the fading out of product when new versions.
Nylon fibre. It is a synthetic fibre invented by DuPont that was used originally for hosiery but in many applications. Nylon is naturally water-repellent, easy to dye, and very strong. These features have helped plastic replace cotton in many industrial uses, like bags and flags.
Man-made fibre. Viscose and Acetate, derived from cellulose, were almost all the human-made fibres in existence before World War II. During the 1930s, after intensive fibre research, several new synthetic fibres were produced which led to the production of nylon.
Eight O Seven 807, a law that allows fabrics cut in the United States, garments assembled in Mexico, the Caribbean and Central American countries. And return to the United States with tariff assessed on added value (sewing).
Lycra. Spandex (Elastane) is a synthetic fibre it is exceptionally elastic, healthy and still durable, the fibre is a polyurethane-polyurea co polymer vented by DuPont chemists in 1959.
Hemp fibre is a bast fibre probably used first in Asia. The cord is dark tan or brown and is difficult to bleach, but it can be dyed bright and dark colours. The hemp fibre varies widely in length, depending upon their ultimate use. Industrial threads may be several inches long, while fibre used for domestic textiles are about 1.9 to 2.5 cm.
Aramid fibre is a name of a specific type of stable and heat-resistant fibre introduced early in the 1960s by the chemical giant DuPont.