MANUFACTURING METHOD FOR COMPOSITE MOLDING

To provide a manufacturing method for a composite molding capable of suppressing peeling between moldings.SOLUTION: A manufacturing method for a composite molding 20 includes a first step of arranging a first molding raw material M1, a second step of arranging a second molding raw material M2 on the first molding raw material M1, and a step of completely shrinking the first molding raw material M1 and the second molding raw material M2. In the second step, the first residual shrinkage rate η1 of the partially cured first molding raw material M1 is 40% or more and 90% or less, and the second residual shrinkage rate η2 of the second molding raw material M2 is 70% or more. The ratio of the second residual shrinkage rate η2 to the first residual shrinkage rate η1 (η2/η1) is 0.78 or more and 2.5 or less.SELECTED DRAWING: Figure 3 【課題】成形体間に剥離が生じることを抑制可能な複合成形体の製造方法を提供する。【解決手段】複合成形体２０の製造方法は、第１成形用原料Ｍ１を配置する第１工程と、第２成形用原料Ｍ２を第１成形用原料Ｍ１上に配置する第２工程と、第１成形用原料Ｍ１及び第２成形用原料Ｍ２を完全収縮させる工程とを備える。第２工程において、部分硬化した第１成形用原料Ｍ１の第１残収縮率η１は４０％以上９０％以下であり、かつ、第２成形用原料Ｍ２の第２残収縮率η２は７０％以上である。第１残収縮率η１に対する第２残収縮率η２の比（η２／η１）は、０．７８以上２．５以下である。【選択図】図３