Method of cutting multilayer body, method of forming multilayer container, and multilayer formed product

A method of forming a multilayer container in which a container body is formed by means of molding from a multilayer structure including a plurality of laminated resin layers at least one of which is in a fused state, and simultaneously, a peripheral edge portion of the container body of the multilayer structure is cut with a predetermined width so as to form a flange portion, wherein the cutting of the peripheral edge portion of the container body of the multilayer structure comprises the steps of:

• compressing and deforming a multilayer structure, while extending respective layers of the multilayer structure to provide a thin thickness portion, so that an upper layer bites into a lower layer by pushing a push cutter, by a predetermined amount, into the multilayer structure supported by a cutter receiving portion, in a fused state of at least one of the resin layers forming the multilayer structure;
• and push-cutting the compressed thin thickness portion till the push cutter abuts against the cutter receiving portion so as to converge an intermediate layer and surface resin layers of the multilayer structure to the abutting portion of the push cutter and the cutter receiving portion.

A multilayer product formed by push-cutting a multilayer structure formed of a plurality of laminated resin layers between a cutter receiving portion and a push cutter so as to provide a predetermined shape, wherein a push-cut point between the cutter receiving portion and the push cutter is positioned on a side surface of the multilayer structure opposite to the push cutter, and an intermediate layer and surface resin layers are converged to the push-cut point.