An aqueous biopolymer dispersion composition comprising: a biopolymer selected from the group consisting of: polybutylene adipate terephthalate (PBAT), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), polylactic acid (PLA), poly(3-hydroxybutyrate) (PHB), polycaprolactone (PCL), poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH); poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polyhydroxyalkanoate (PHA), and mixtures thereof; a stabilising agent selected from the group consisting of: polyvinyl alcohol, fatty alcohol ethoxylates, ethylene oxide/propylene oxide (EO/PO) block copolymers, salts of fatty acids and mixtures thereof; a rheology modifier; a cross linking agent; optional further ingredients; and water.

A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid including a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from the first component; (c) irradiating the build region with light through the optically transparent member to form a solid polymer scaffold from the first component and also advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, and containing the second solidifiable component carried in the scaffold in unsolidified and/or uncured form; and (d) concurrently with or subsequent to the irradiating step, solidifying and/or curing the second solidifiable component in the three-dimensional intermediate to form the three-dimensional object.

A fiber-reinforced resin article with excellent mechanical properties can be provided efficiently in a short time. The method includes 3D printing including forming fibers and a resin by a 3D printer, and pressurizing the 3D printed article formed by the 3D printing step, in which the pressurizing is performed at a temperature at which the resin of the 3D printed article is softened, and heating to the temperature at which the resin is softened is performed by induction heating.

A fiber-reinforced resin article with excellent mechanical properties can be provided efficiently in a short time. The method includes 3D printing including forming fibers and a resin by a 3D printer, and pressurizing the 3D printed article formed by the 3D printing step, in which the pressurizing is performed at a temperature at which the resin of the 3D printed article is softened, and heating to the temperature at which the resin is softened is performed by induction heating.

This invention relates to a biodegradable polymer composition which is particularly suitable for use in the manufacture of articles having a high heat deflection temperature (HDT) by injection moulding and thermoforming.

This invention relates to a biodegradable polymer composition which is particularly suitable for use in the manufacture of articles having a high heat deflection temperature (HDT) by injection moulding and thermoforming.

A build plate for a three-dimensional printer includes: a rigid, optically transparent, gas-impermeable planar base having an upper surface and a lower surface; and a flexible, optically transparent, gas-permeable sheet having an upper and lower surface, the sheet upper surface comprising a build surface for forming a three-dimensional object, the sheet lower surface positioned on the base upper surface. The build plate includes a gas flow enhancing feature configured to increase gas flow to the build surface.

A polymer body includes a first thermoplastic polymer, and a second thermoplastic polymer. The first thermoplastic polymer and the second thermoplastic polymer form a continuous solid structure. The first thermoplastic polymer forms an external supporting structure that at least partially envelops the second thermoplastic polymer. A first flow temperature of the first thermoplastic polymer is at least 10° C. higher than a second flow temperature of the second thermoplastic polymer. The first thermoplastic polymer may be removable by exposure to a selective solvent.

The method involves supplying a profile which is wound round a winding structure (13). The stresses are present in the profile as a result of the winding. The profile comprises several fibers extending along one another, which are embedded in a partially cured thermosetting matrix material. A heat treatment is carried out on the profile, by means of a heat treatment device, while the profile is wound round the winding structure. The matrix material is post-cured, during heat treatment. The glass-transition temperature of the matrix material is increased as a result of the heat treatment and the temperature to which the profile is exposed during the heat treatment remains below the glass-transition temperature. The stresses remain constant and the shape is retained both in cross-section as well as radius of curvature of the profile, in the stress-free state, despite the heat treatment and despite winding the profile round the winding structure prior to the heat treatment.

The method involves supplying a profile which is wound round a winding structure (13). The stresses are present in the profile as a result of the winding. The profile comprises several fibers extending along one another, which are embedded in a partially cured thermosetting matrix material. A heat treatment is carried out on the profile, by means of a heat treatment device, while the profile is wound round the winding structure. The matrix material is post-cured, during heat treatment. The glass-transition temperature of the matrix material is increased as a result of the heat treatment and the temperature to which the profile is exposed during the heat treatment remains below the glass-transition temperature. The stresses remain constant and the shape is retained both in cross-section as well as radius of curvature of the profile, in the stress-free state, despite the heat treatment and despite winding the profile round the winding structure prior to the heat treatment.