Thermally expandable sheet production method and shaped object production method
AssigneeCasio Computer Co., Ltd.
InventorsYoshimune Motoyanagi, Yuji Horiuchi
Life of this patent
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Abstract
A thermally expandable sheet includes: a first thermally expansive layer that is formed on one side of a base and contains a first thermally expandable material and a first binder, the first thermally expansive layer having a first ratio of the first thermally expandable material with respect to the first binder; and a second thermally expansive layer that is formed on the first thermally expansive layer and contains a second thermally expandable material and a second binder, the second thermally expansive layer having a second ratio of the second thermally expandable material with respect to the second binder, wherein the second ratio is lower than the first ratio.
Claims19
A thermally expandable sheet production method, comprising:
- a first formation step of forming on one side of a base a first thermally expansive layer that contains a first thermally expandable material and a first binder, the first thermally expansive layer having a first ratio of the first thermally expandable material with respect to the first binder;
- and
- a second formation step of forming on the first thermally expansive layer a second thermally expansive layer that contains a second thermally expandable material and a second binder, the second thermally expansive layer having a second ratio of the second thermally expandable material with respect to the second binder,
- wherein in the second formation step, the second thermally expansive layer is formed on the first thermally expansive layer with the second ratio lower than the first ratio.
A shaped object production method comprising:
- preparing a medium comprising a thermally expansive layer that is configured to expand with heating;
- and
- applying heat to at least a portion of the medium with a temperature, to cause expansion of the thermally expansive layer and rising of a surface of the medium and to form unevenness on the surface of the medium, the temperature being a temperature that causes the thermally expansive layer to expand, the surface corresponding to the portion of the medium to which the heat is applied,
- wherein the thermally expansive layer comprises:
- a first thermally expansive layer comprising a first thermally expandable material and a first binder, the first thermally expansive layer having a first ratio of the first thermally expandable material with respect to the first binder, and
- a second thermally expansive layer formed on the first thermally expansive layer and comprising a second thermally expandable material and a second binder, the second thermally expansive layer having a second ratio of the second thermally expandable material with respect to the second binder, and
- wherein the second ratio is lower than the first ratio.
Dependencies are inferred from the claim text.