3D infiltration method

A method for producing one or more three-dimensional components by means of a layering technique comprising the steps of:

• applying material layers of the three-dimensional component(s) over a build platform;
• at least partially solidifying a first portion of the material layers, wherein the first portion at least partially has pores, and a second portion of the material layers is unbound;
• separating the second portion from the three-dimensional component(s);
• and
• contacting the three-dimensional component(s) with a water-containing medium, wherein a particulate material is used to build the material layers, the particulate material including a build material which binds or solidifies due to the introduction of the water-containing medium;
• wherein the step of contacting includes a series of consecutive steps using different materials which are suitable for solidifying the particulate material and/or essentially filling out the pores.

A material system, for producing a three-dimensional part by means of a layering technique, comprising:

• a first component being a hydraulically hardening material, and
• a second component being or containing an aqueous solution-containing material, which is hardened by the discharge of water;
• wherein the material system includes sand or artificial sands;
• a powdered material;
• and a polymer dispersion.

A method for producing one or more three-dimensional components by means of a layering technique comprising the steps of:

• applying material layers of the three-dimensional component(s) over a build platform;
• at least partially solidifying a first portion of the material layers, wherein the solidified areas at least partially have pores, and a second portion of the material layers is unbound;
• separating the second portion from the three-dimensional component(s);
• and
• contacting the three-dimensional component(s) with a water-containing medium, wherein a particulate material is used to build the material layers, the particulate material including a build material which binds or solidifies due to the introduction of the water-containing medium;
• wherein the particulate material used to build the material layers includes a hydraulically binding material;
• wherein
• the hydraulically binding material includes a cement or a gypsum;
• the water-containing medium is a water glass or a water-based plastic dispersion;
• the water-containing medium coats the one or more components on the outside;
• and
• the water-containing medium contains additional components including a polymer.

A method for producing one or more three-dimensional components by means of a layering technique comprising the steps of:

• layering a powder build material containing a hydraulic binder to form a layer;
• selectively solidifying at least a portion of the layer by applying water to the portion in a quantity insufficient to completely bind the hydraulic binder so that the portion of the layer has unbound hydraulic binder,
• repeating the layering and selectively solidifying steps until a partially bound product is formed,
• removing unsolidified powder from the product and then contacting the partially bound product with a water containing medium to react with the unbound hydraulic binder in the partially bound product.