Systems and techniques are described for additive manufacturing, e.g., 3D printing, a component on an unconstrained freeform build surface. The systems and techniques may allow determining a 3D trajectory and/or deformation of a target deposition region on the build surface by determining a relative location of at least one registration feature on the build surface. Control circuitry may control, based on the 3D trajectory and/or deformation and based on a build model of the component, at least one dispenser to cause dispensing of at least one composition from the at least one dispenser in a predetermined pattern on or adjacent to the target deposition region. The predetermined pattern of the composition defines at least one portion of the component.

A method and a device are described for creating a pattern (7) of a first fluid in a second fluid, the density of which is adapted, as a function of the viscosity thereof, to the density of the first fluid, and wherein the two fluids are immiscible or are miscible only with difficulty, said device comprising a storage container (1) for the first fluid and an injector which is connected to the storage container (1) and is associated with a positioning unit (5). In order to make it possible to create floating patterns (7) of a first fluid in a second fluid, in particular in the food sector for creating predefined floating patterns (7) in beverages, it is proposed that the injector forms a capillary (3) which is connected to the storage container (1) via a metering device (4) and the length of which corresponds at least to the maximum pattern depth in the second fluid, and that the outlet tip (9) of the capillary (3) is movable by way of the positioning unit (5) in the longitudinal direction of the capillary (3) and in at least one direction transverse thereto.

Bone Composite and Compositions, particularly multicomponent or multipart compositions, are for the preparation of bone constructs for use in trauma, or cancer patients for example. The multipart compositions are based around combinations of fibrinogen, thrombin, hydrogels and calcium/phosphorous salts. The multipart compositions are capable of being printed to yield bone constructs using a 3D printing process to produce accurate and precise bone constructs of a desired geometry.

A method of additive manufacturing (AM) includes dispensing a first building material formulation to form an outer region, and dispensing a second building material formulation to form an inner region, the outer region surrounding the inner region, the inner and outer regions being shaped to form a layer of the object; exposing the layer to a first curing condition, repeating the dispensing and the exposing to sequentially form a plurality of layers of the object and collectively exposing the plurality of layers to a second curing condition. The selections are such that the first building material formulation is hardened to a higher degree than the second building formulation. The outer regions form a hardened coating that at least partially encapsulates the inner regions. The second curing condition is other than the first curing condition and is selected to increase the degree that the inner region is hardened.

A high-density polyethylene composition that is formulated for being injection molded into an injection-molded bottle cap closure comprising a skirt that axially extends from the periphery of a base, and internal screw threads for securing the cap to a container, and method of producing the same.

The present invention provides a process for preparing an improved compounded product and a compounded product prepared by that process.

A method of layerwise fabrication of a three-dimensional object is disclosed. The method comprises, for each of at least a few of the layers: dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both the first and the second modeling formulations, and at least one envelope region at least partially surrounding the core region using one of the first and the second modeling formulations but not the other one of the first and the second modeling formulations. The method can also comprise exposing the layer to curing energy. The first modeling formulation is characterized, when hardened, by heat deflection temperature (HDT) of at least 90° C., and the second modeling formulation is characterized, when hardened, by Izod impact resistance (IR) value of at least 45 J/m.

An extrusion additive manufacturing process including the step of extruding a polyethylene composition having a melt flow index MIE of at least 0.1 g/10 min., the composition made from or containing: A) from 1% to 40% by weight of a polyethylene component having a weight average molar mass Mw, as measured by GPC (Gel Permeation Chromatography), equal to or higher than 1,000,000 g/mol; B) from 1% to 95% by weight of a polyethylene component having a Mw value from 50,000 to 500,000 g/mol; and C) from 1% to 59% by weight of a polyethylene component having a Mw value equal to or lower than 5,000 g/mol.

An embodiment can provide a polyamide-imide film and a method for producing same, the film comprising a polyamide-imide polymer formed by polymerizing an aromatic diamine compound, an aromatic dianhydride compound and a dicarbonyl compound, wherein, in an XRD graph with a section in which 2θ=8° to 32° as a baseline, the film shows a peak area of 50% or above around 2θ=23° with respect to a peak area seen around 2θ=15°.

The invention relates to an additive manufacturing process by extrusion for forming a three-dimensional part in an additive manufacturing machine having a build environment, the process comprising: i) providing a composition comprising at least one poly-aryl-ether-ketone (PAEK) having a melt viscosity from about 200 Pa.Math.s to about 1500 Pa.Math.s, according to ASTM D3835-16, measured at a temperature of 320° C. and at a shear rate of 100 s.sup.−1, by capillary rheology using a 1 mm diameter, 15 mm long die; ii) extruding the composition in the build environment at an extrusion temperature equal to 330° C. or less, to form an extruded part section; and, iii) cooling the extruded part section in the build environment.

The invention also relates to a filament and its use in said additive manufacturing process and the corresponding object obtainable from said additive manufacturing process.