The invention relates to a process for manufacturing a textile preform from a fibrous array with continuous fibres, the process comprising a step for heating of the fibrous array between a matrix and a punch to stiffen this fibrous array. To cut down processing time, the heating step is performed by having a hot gas flow circulate through the matrix, the fibrous array and the punch.

Methods and apparatuses for mounting a material (1) on a carrier (6) are provided. To this end, the material is arranged on a porous layer (2) of an air bearing arrangement (2, 3).

Provided is a mold core structure, which is arranged on a mold. The mold core structure includes a mold core body, which is a solid body made of three-dimensional printing, wherein one side of the mold core body is provided with a molding part, which is combined with an internal structure of the mold to form a cavity, there is a conformal air duct inside the mold core body, the conformal air duct has at least one main air duct and a plurality of secondary air ducts, the main air duct has a first end and a second end, the first end is located on one side of the mold core body, and connected to an external pneumatic control device, the pneumatic control device controls air to enter or exit the cavity through the conformal air duct, the second end thereof is located inside the mold core body, a path of the main air duct is freely wound around the molding part between the first end and the second end, one end of each of the secondary air ducts is communicated with the main air duct, and another end thereof is communicated with the molding part and disposed towards an ejection direction of a finished product. Accordingly, the finished product is released from the mold by controlling the air through the pneumatic control device.

A mold and die metallic material, an air-permeable member for mold and die use, and a method for making the same are provided. The mold and die metallic material is made by forming a mixed material containing stainless steel fibers with an equivalent diameter of 30-300 m and a length of 0.4-5.0 mm, and stainless steel powder, heat sintering a green body of the mixed material, and heating the sintered body thus obtained in a nitrogen atmosphere and nitrided; wherein average open pore diameter thereof is 3-50 m.

The document relates to a tool for producing a 3D molded product from a pulp slurry, comprising a pair of molds having respective product faces, that are configured to face each other and to press a pulp layer therebetween, said product faces providing a 3D shape for molding the 3D molded product, said product faces presenting a respective outer product face edge, defining an outermost limit of a forming area of mold. At least one of the product faces, as seen from the product face edge and inwardly towards a center of gravity of the product face, presents an outer zone (Z1) having effectively no porosity, and an inner zone (Z4) having a porosity of 40-75%, wherein a first intermediate zone (Z2) is arranged between the outer zone (Z1) and the inner zone (Z4), and has a porosity that is greater than that of the outer zone (Z1) and less than that of the inner zone (Z4).

According to examples, an apparatus may include a plurality of structures formed of fused sections of build material particles and a plurality of porous sections supported by the plurality of structures. The plurality of porous sections may be formed of partially-fused build material particles, in which the partially-fused build material particles may include build material particles that may be partially fused together to cause the plurality of porous sections to have at least a predefined porosity level.

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 invention provides an additive manufactured vacuum mold for an FFF/FDM processing which includes a top surface, a bottom wall and side walls having a lattice grid disposed therewithin. A vacuum port enables a vacuum source to be applied to the mold. The lattice is a grid having layers formed therein in alternating directions on a layer-by-layer basis. The layers comprise strands or threads of infill material which are deposited or formed by additive manufacturing. Gaps are provided between the layers to enable a vacuum to draw material downward uniformly between the layers. A porous template seats upon the top wall to enable heated material to be drawn toward the top surface.

The present invention is directed to a 3D printed mold for creating three dimensional pulp products from a fibrous pulp slurry. Transverse filaments are integrated into an infill structure with an open-cell pattern. The transverse filaments form channels through the interior matrix of the mold. The open cell infill pattern and channels allow for the movement of vacuumed materials through the interior matrix of the 3D printed mold when vacuum pressure is applied. The product surface of the mold comprises an array of beads formed from the over-extrusion of melted material at the ends of the transverse filaments. The beaded array narrows the opening of the channels created by the transverse filaments, preventing the fibers from entering the matrix of the mold and clogging the flow of materials. This causes the fibers to aggregate on the product surface of the mold, forming the three dimensional pulp product.

According to examples, an apparatus may include a processor that may access data pertaining to a part to be fabricated from material elements in a slurry of a liquid and the material elements, the data identifying a configuration of holes to be formed in the part. The processor may also access a digital model of a screen device having a plurality of pores based on the accessed data, the screen device to be used to fabricate the part, and may determine locations on a surface of the digital model of the screen device that correspond to the identified configuration of the holes to be formed in the part. The processor may further generate, at the determined locations on the surface of the digital model of the screen device, a plurality of walls that are to form the holes in the part.