HEAT-EXPANDABLE SHEET, PRODUCTION METHOD OF EXPANDABLE SHEET, AND THREE-DIMENSIONAL IMAGE FORMATION METHOD

摘要

To provide a heat-expandable sheet in which warpage of the sheet is suppressed; and to provide a production method of an expandable sheet, and a three-dimensional image formation method.SOLUTION: A heat-expandable sheet 10 includes a heat-expandable layer 12 provided on one surface of a substrate 11, and expanding corresponding to absorbed heat quantity, a first film 14 provided on the heat-expandable layer 12, and comprising a resin, and a second film 16 provided on the other surface of the substrate 11, and comprising a resin.SELECTED DRAWING: Figure 1