Multilayer forming method for reconstituted tobacco

Provided is a multilayer forming method for reconstituted tobacco. The multilayer reconstituted tobacco comprising a bottom layer and a surface layer or comprising a bottom layer, a core layer and a surface layer is prepared through a net folding forming system. The net folding forming system comprises a single-layer pulp flowing box (1), a long net part (2) of the single-layer pulp flowing box (1), a double-layer pulp flowing box (3) and a net part (4) of the double-layer pulp flowing box (3). The specific forming method comprises the steps of bottom layer forming, surface layer forming or surface layer and core layer forming and film base forming. According to the method, the yield of the reconstituted tobacco can be increased by 3%, the bulk is improved by 3%, the longitudinal and transverse quantitative difference is stabilized at +/-1.25 g/m , the quality of the product is improved, and meanwhile the production cost is reduced. 种再造烟叶多层成型方法，通过叠网成型系统制备得到包括底层和面层或者是包括底层、芯层和面层的多层再造烟叶，所述叠网成型系统包括有单层流浆箱(1)及其长网部(