Rubber
Rubber is an amorphous and soft polymer material originally obtained by injuring a plant body and the like. At present, it refers to a material having a high elastic limit and a low elastic modulus, that is, an elastic rubber, which is mainly composed of an organic polymer such as natural rubber or synthetic rubber as described later. In Kanji, it is written "Okinawa", and this character is often used for rubber related company names and the like. It is one type of elastomer, and the elastomer is divided into two types, rubber and thermoplastic elastomer. ...