A multilayer biodegradable film is based on polylactides (polylactic acid), preferably obtained by reactive coextrusion, and may include at least one first layer A and at least one second layer B, in which the layer A and layer B are different from each other and the layer A includes: i) a minimum of 75 wt. % amorphous polylactic acid (PLA) with D isomer content ?5%; and ii) triblock epoxy styrene-acrylate copolymer up to 5 wt. % of the total polylactic acid in this layer; and layer B includes: i) a minimum of 75 wt. % semi-crystalline polylactic acid with a degree of crystallinity ?20% and low content of D isomer ?5%; and ii) triblock epoxy styrene-acrylate copolymer up to 5 wt. % of the total polylactic acid in this layer. The multilayer biodegradable film may be three-layered and obtained by the blown extrusion method.

Compositions which are curable by, for example, exposure to radiation to form useful articles such as three-dimensionally printed objects are prepared using multistage polymers, polymerizing organic substances and (meth)acrylic polymers. The multistage polymer is effective to toughen and impact modify the cured articles, yet the compositions prior to curing are relatively low in viscosity and agglomerate content even at high loadings of multistage polymer.

A method of additive manufacturing is described wherein powder material is spread in a layer, contacted with a binding polymer and cured with light. Also described is a system for preparing additive manufactured objects such as molds, tools and composites.

Modeling material formulations usable in additive manufacturing of a denture structure, and additive manufacturing methods employing same are provided. Kits comprising the modeling material formulation, optionally in combination with a support material formulation, are also provided.

The present document discloses an automated method and apparatus to manufacture almost any shape strength and stiffness enhancement structures from composite materials. The method supports the manufacture of strength and stiffness enhancement structures that follow the curved surfaces.

A molded lens assembly includes a cover and at least four molded elongated features. The cover may have a substantially planar portion and side portions extending away perpendicularly at a periphery of the substantially planar portion and defining an inner surface of the substantially planar portion. The at least four molded elongated features generally extend away from the inner surface of the substantially planar portion and are arranged such that a long axis of each of the molded elongated features is aligned with a side of a polygon having a number of sides equal to the number of molded elongated features. Each molded elongated feature generally includes a first convex lens portion at a first end and a second convex lens portion at a second end.

Provided herein are methods, compositions, devices, and systems for the 3D printing of biomedical implants. In particular, methods and systems are provided for 3D printing of biomedical devices (e.g., endovascular stents) using photo-curable biomaterial inks (e.g., or methacrylated poly(diol citrate)).

Invention relates to a multilayer article comprising successively: a non-woven layer of fibers (3) comprising at least 50% by weight of at least one biodegradable polymer melting point of which is below 220 C.; a layer of food-safe adhesive (2); a cellulose-fiber based support (1).

A pattern forming method includes a contact step of bringing a curable composition containing a polymerizable compound and arranged on a field of a substrate into contact with a mold; a curing step of forming a cured film including a pattern formed by a cured product of the curable composition by irradiating the curable composition arranged on the field with light; and a separation step of separating the cured film and the mold, wherein the field includes a plurality of regions, and in the curing step, for each of the plurality of regions, the curable composition is irradiated with light in accordance with an illuminance and an irradiation time decided based on a target line width of the pattern.

A composite material that includes: particles of a two-dimensional material having one or plural layers; and an anionic resin material. The one or plural layers includes a layer body represented by: M.sub.mX.sub.n, wherein M is at least one metal of Group 3, 4, 5, 6, or 7, X is a carbon atom, a nitrogen atom, or a combination thereof, n is 1 to 4, and m is more than n but not more than 5, and a modifier or terminal T exists on a surface of the layer body, wherein T is at least one of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, and a hydrogen atom. A ratio of the particles of the two-dimensional material to a total of the particles of the two-dimensional material and a solid content of the resin material in the composite material is 50% to 99.9% by mass.