A continuous flow projection lithography system to form microstructures using an optical array incorporated in a continuous coating process is provided. A mask is placed at a distance from the array. Each element of the array projects one image of the mask onto a substrate, effectively forming an array thereon. A coating process allows flows that can be used to define functional regions of particles or supporting layers that prevent adhesion of crosslinked polymers to surfaces.

The invention concerns a method for producing a three-dimensional object, in particular an artificial tooth, by stereolithography wherein a liquid photocurable resin composition is cured by light. Said photocurable resin composition contains, based on the total weight of the photocurable resin composition, (i) from 90 to 99.9% by weight of a radical polymerizable organic compound (A) selected from radical polymerizable monomers, oligomers, pre-polymers and mixtures thereof; and (ii) from 0.1 to 10% by weight of a photosensitive radical polymerization initiator (B). Said radical polymerizable organic compound (A) comprises, based on the weight of the radical polymerizable organic compound (A), from 0.5 to 20% by weight of a polyrotaxane compound comprising a polymer chain selected from polyethylene glycol (PEG), polypropylene glycol (PPG), polyethylene glycol-polypropylene glycol (PEG-PPG) block copolymer or polydimethylsiloxane (PDMS), onto which the cyclodextrin ring(s) is/are slipped and wherein the cyclodextrin is derivatized with at least a radical polymerizable group. The invention also concerns a relative liquid photocurable resin composition and articles produced thereby.

The present disclosure is directed to actinic radiation curable polymeric mixtures, cured polymeric mixtures, tires and tire components made from the foregoing, and related processes.

An apparatus for producing a three-dimensional object by additive manufacturing includes a drive assembly operatively associated with a carrier and a window mount and configured to advance the carrier and the window mount away from one another. A first fluid switch is connected to a first fluid orifice when a window is present, or connected to the window mount and configured for connection to the window when the window is absent. A second fluid switch is connected to a second fluid orifice when the window is present, or connected to the window mount and configured for connection to the window when the window is absent. A fluid supply is connected to both the first and second fluid switch, and the fluid includes a polymerization inhibitor.

A system and method for manufacturing a micropillar array (20). A carrier (11) is provided with a layer of metal ink (20i). A high energy light source (14) irradiates the metal ink (20i) via a mask (13) between the carrier (11) and the light source. The mask is configured to pass a cross-section illuminated image of the micropillar array onto the metal ink (20i), thereby causing a patterned sintering of the metal ink (20i) to form a first subsection layer (21) of the micropillar array (20) in the layer of metal ink (20i). A further layer of the metal ink (20i) is applied on top of the first subsection layer (21) of the micropillar array (20) and irradiated via the mask (13) to form a second subsection layer (21) of the micropillar array on top. The process is repeated to achieve high aspect ratio micropillars 20p.

A system and a method of producing sub-millimeter scale particles are provided herein. The method includes providing a substrate that has a layer of photosensitive material thereon; exposing a portion of the layer to a structured beam of light that has a cross-sectional shape, and a cross-sectional size. The cross-sectional size of the structured beam of light at the layer of photosensitive material is smaller than a sub-millimeter scale particle. The method also includes moving the substrate or the beam of light relative to each other to follow a path for making additional exposures or continuous exposure to result in a discrete exposed pattern in the layer that corresponds to the particle being produced, and exposing the layer to the light; and processing the layer to remove unexposed material around the discrete exposed pattern and to separate the discrete exposed pattern from the layer to provide the sub-millimeter scale particle.

The present invention relates to radiation of dual radiation/moisture curable compositions based on (meth)acrylate- and silane-terminated polymers that can be used as 3D printing materials and provide isotropic and elastomeric properties. The invention further relates to the use thereof as 3D printing materials and printing methods using said compositions.

The present invention relates to radiation or dual radiation/moisture curable compositions based on (meth)acrylate- and silane-terminated polyorganosiloxanes that can be used as 3D printing materials and provide isotropic and elastomeric properties. The invention further relates to the use thereof as 3D printing materials and printing methods using said compositions.

The present invention relates to a method for additive manufacturing of a 3D-structured form and to a device for additive manufacturing of a 3D-structured form.

Techniques are provided to independently control 3D shape and chemistry of rapidly produced colloids. A pre-polymer mixture including a monomer is made to flow into a channel with insular relief in a wall at a known location of the channel. A stimulus that polymerizes the pre-polymer mixture is directed onto the known location to form a structure locked in place at the known location by the insular relief. A pressure is applied to the channel that is sufficient to deflect the wall having the insular relief sufficiently to release a hydrogel particle comprising the structure.