Silk

A natural fiber first cultivated in east Asia more than 5,000 years ago and formed one of the world’s largest industries. Recent resurgence as a renewable material with potential outside of garment use deemed “a new old material.” Ongoing research into new uses and development.

Harvesting

Derived from the protein excreted by a gland on the silk worm. They feed on leaves of the mulberry tree. The silk worm protects itself by wrapping a cocoon made from a single 2/3 mile fibre. China was at the heart of the silk route and is the largest producer followed by India.

Forming Methods

A single cocoon can yield enough fiber to produce 328 feet. Spider silk has been found to be a super heat conductor and bee silk are emerging as new materials. Has the potential to be used for implanting into the body to replace veins, arteries as implantable fibre optics used to store data and for compostable products and sustainable plastics.

Sustainability

Renewable, biocompatible, biodegradable and high yield rate. It uses less water, chemicals, and energy than many other fibers. Problems can arise with animal rights and labor practices.

Physical Properties

It is the strongest natural fiber and reflects light due to its triangular and prismatic section. Superb optical qualities. Low thermal conductivity. High strength to weight ratio. Edible.