Organic binder, granular material, three-dimensional lamination-shaped mold maufacturing apparatus, and three-dimensional lamination-shaped mold manufacturing method

An organic binder for use in shaping a three-dimensional laminated mold, which is activated and cured by using, as a catalyst, an acid coating a granular material, the organic binder being one of:

• furfuryl alcohol only;
• and
• a mixture of furfuryl alcohol and at least one material selected from the group consisting of 2,5-bis(hydroxymethyl)furan, a phenol group, and a bisphenol group.

An organic binder for use in shaping a three-dimensional laminated mold, which is activated and cured by using, as a catalyst, an acid coating a granular material,

• the organic binder being one of a condensate and a cocondensate of an aldehyde group and at least one material selected from a phenol group and a bisphenol group.

An organic binder for use in shaping a three-dimensional laminated mold, which is activated and cured by using, as a catalyst, an acid coating a granular material, the organic binder being one of:

• a mixture of furfuryl alcohol and one of a condensate and a cocondensate of an aldehyde and at least one material selected from a phenol group and a bisphenol group;
• and
• a mixture of furfuryl alcohol, 2,5-bis(hydroxymethyl)furan, and one of a condensate and a cocondensate of an aldehyde and at least one material selected from a phenol group and a bisphenol group.

An organic binder for use in shaping a three-dimensional laminated mold, which is activated and cured by using, as a catalyst, an acid coating a granular material, the organic binder being one of:

• a mixture of urine, an aldehyde condensate and furfuryl alcohol;
• and
• a mixture of urine, an aldehyde condensate, furfuryl alcohol and 2,5-bis(hydroxymethyl)furan.

An apparatus for manufacturing a three-dimensional lamination-shaped mold, in said apparatus:

• a granular material coated with an acid being used, as a shaping material which is spread into layers and selectively bound;
• and
• an organic binder being used, as a binder which selectively binds said granular material coated with said acid.