Abstract: A cassette for supporting substrates and an elongated rib therefor is described and represents a further improvement in the previously proposed elongated rib systems of the prior art and is designed particularly to preclude deflection and dampen vibrations of loaded substrates. The elongated ribs for the cassette project from side panels utilizing an elongated rib structure including three segments; namely, a base resin body, a bar-like intermediate resin body extending from the base resin body, and a terminal resin body disposed at the forward end of the intermediate resin body. Preferably, the elongated rib structure includes a linearreinforcing member inserted fromthe base resin body to the intermediate resin body or, alternatively, from the base resin body through the intermediate resin body to the terminal resin body.

Abstract: A glass substrate transport box which is easy to handle and transported and adapted to protect glass substrates is provided at drastically reduced production cost. At least the body of the box is a molded piece of resin foam with a foaming ratio of 3-30, e.g. polyolefin foam, which has grooves for supporting glass substrates on at least a pair of its opposed inside walls. Preferably the inside wall of the body has a relatively dense skin layer. The resin foam may contain an electrically conductive polymer or an antistatic agent.

Abstract: The invention provides a cassette which is sufficiently sturdy even though its side boards are of narrow width, is protected against static charging in the insertion and removal of substrates and, hence, against circuit failure, and is not liable to form a dust of friction. The invention further provides an improved substrate-supporting side board for use in the fabrication of a cassette.