According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

This invention involves the incorporation of gas in the matrix of a mandrel. The incorporation of gas, as foam, into the matrix of a mandrel reduces the density of the mandrel. The resulting mandrel is easier to remove from finished product by washout or disintegration. Therefore it is of great value in the use of mandrels in making hollow composite parts.

The present invention relates to a material system for 3D printing, to a 3D printing process using a lignin-containing component or derivatives thereof or modified lignins, to soluble moldings that are produced by a powder-based additive layer manufacturing process and to the use of the moldings.

The present document discloses a tool or tool part for use in a process of molding a product from a pulp slurry. The tool or tool part comprises a self-supporting tool wall portion having a product face, for contacting the product, and a back face on the other side of the wall relative to the product face. The tool wall portion presenting pores, which are provided by a plurality of channels extending through the tool wall portion, from the product face to the back face. The channels are straight or curved with no more than one point of inflection.

The present document discloses a tool or tool part for use in a process of molding a product from a pulp slurry. The tool or tool part comprises a self-supporting tool wall portion having a product face, for contacting the product, and a back face on the other side of the wall relative to the product face. The tool wall portion presenting pores, which are provided by a plurality of channels extending through the tool wall portion, from the product face to the back face. The channels are straight or curved with no more than one point of inflection.

A moulding installation and method for moulding food products from a pumpable foodstuff mass are described. A revolving mould drum is provided with multiple mould cavities and a mass feed member is arranged at a fill position to transfer foodstuff mass into passing mould cavities. The foodstuff mass forms a food product in the mould cavity. A pressurized air food product ejection system includes air ducts in the mould drum that extend to the cavities and at least a portion of the surface delimiting a mould cavity is air permeable. The ejection system further includes a pressurized air source to feed pressurized air at a regulated ejection air pressure thereof to the air ducts. A controller is adapted to input at least one target parameter related to filling of the mould cavities with the foodstuff mass via the mouth of the mass feed member. The controller is adapted to automatically set an ejection air pressure by the pressurized air source on the basis of the inputted target parameter.

An apparatus for manufacturing a part, where the apparatus includes a granular media made of a particulate material and a binding material, where at least a portion of the granular media being formed as a surface of a layup tool.

A system for thermoforming an object is provided. The system includes a mold and a pressure-box. The mold has a surface that defines a shape of the object and includes two or more portions of differing porosities. The pressure-box is operative to generate a pressure differential across the surface. The two or more portions apply the pressure differential at different loads, based at least in part on the differing porosities, to a material disposed onto the surface so as to form the object by deforming the material into the shape.

The present document discloses a tool or tool part for use in a process of molding a product from a pulp slurry. The tool or tool part comprises a self-supporting tool wall portion having a product face, for contacting the product, and a back face on the other side of the wall relative to the product face. The tool wall portion presenting pores, which are provided by a plurality of channels extending through the tool wall portion, from the product face to the back face. The channels are straight or curved with no more than one point of inflection.

The invention is directed to a method of forming a molded item said method comprising the steps of (a) providing a mold former comprising an indentation having an inner surface and a bottom face and made of plastics and manufactured by a 3-dimensional printing process, said mold former being shaped to form a mold having (i) an indentation corresponding to the desired shape of said molded item; and (ii) a series of holes extending between the inner surface and the bottom face of the mold former, (b) forming a mold in said mold former from a plastics material; (c) positioning an elongate member in said mold; (d) introducing a volume of liquid into said indentation; (e) positioning a cover over said mold and sealing it thereto; (f) causing said liquid to solidify.