WEB FORMING DEVICE AND SHEET MANUFACTURING APPARATUS

A web forming device includes: a first material supply unit provided with a first release port that releases a first material containing a first defibrated substance and a first organic binder in a gas atmosphere; a second material supply unit provided with a second release port that releases a second material in the gas atmosphere， the second material containing a second defibrated substance and a second organic binder and being different from the first material; and a transporting unit that forms and transports an accumulated substance obtained by accumulating the first material and the second material. The second release port is positioned downstream of the first release port in a transporting direction of the transporting unit， and the accumulated substance is a laminate obtained by laminating a layer of the first material and a layer of the second material.