SHEET SHAPING METHOD, AND SHEET MANUFACTURED BY THE METHOD.

摘要

Provided are a shaping method for forming an extensible region made extensible in a thickness direction without breaking a thermoplastic polymer sheet, and a sheet manufactured by the shaping method. The shaping method shapes the extensible region which is extensible in the thickness direction of the thermoplastic polymer sheet (10) by a stationary mold (5) and a moving mold (6) having a plurality of molding blades (2). The molding blades are shaped such that at least either curves or bent lines having similar section shapes projected on the sheet are arranged around the center of similarity, and such that they extend in the thickness direction of the sheet individually from the stationary mold and the moving mold in a manner not to contact but to mesh alternately with each other. The shaping method comprises the step of introducing the sheet between the stationary mold and the moving mold, and the step of bringing the molding blades of the stationary mold and the moving mold into meshing engagement thereby to extend the sheet between the leading ends of the adjoining molding blades. The sheet is manufactured by that method.