A drag reduction structure wherein a first portion including a plurality of convex portions and concave portions, and a second portion are placed on a first surface; a height from a bottom portion of the concave portion to a top portion of the convex portion, of the first portion, is 10 ?m or more and 1000 ?m or less; a length of the first portion in a second direction is 30 mm or more; and a width of the first portion and a width of the second portion, in a first direction crossing the second direction, is 0.2 mm or more and 50 mm or less.

Methods for fabricating a resin object are provided. In embodiments. such a method comprises irradiating a curable composite with a focal spot of a focused ultrasound beam. the curable composite comprising a porous material having a solid matrix defining pores distributed throughout the solid matrix and a curable composition comprising prepolymers filling the pores. to form at least one cured region of polymer within the curable composite so as to provide a resin object comprising an interpenetrating network comprising the solid matrix of the porous material entangled with the polymer of the at least one cured region.

FDisclosed herein are compositions including a thermoformable sheet having three of more layers. Two layers include one or more monovinylidene aromatic monomer containing polymers which are impact modified by a rubber, one or more monovinylidene aromatic monomer and unsaturated nitrile containing copolymers, or a blend of one or more monovinylidene aromatic monomer containing polymers and a polyolefin, which exhibit resistance to environmental stress cracking. At least one of the two layers is an outer layer. An inner layer includes post-consumer recycled monovinylidene aromatic monomer containing polymers which are impact modified by a rubber, post-industrial recycled monovinylidene aromatic monomer containing polymers which are impact modified by a rubber. Optionally, the composition may include virgin monovinylidene aromatic monomer containing polymers which are impact modified by a rubber. Optionally, the composition may include an outer layer which is a gloss layer.

The present invention is an optical fiber unit (cable) made from a coated optical fiber with UV-curable resin that is integrated into a cross-section of Fiber-reinforced polymer (FRP) composite to provide more mechanical protection for the optical fiber. In the first stage, the optical fiber is covered with a coating of acrylic or silicon UV-curable resin, and then all or a part of the cross-section of the optical fiber is placed in a fiber-reinforced polymer (FRP) that is cured by UV in Pultrusion process. Then, the composition is covered by thermoplastic polymers. At least one optical fiber is regularly located on the cross-section or outer surface of an FRP in such a way that all or part of the cross-section of the optical fiber is placed in the cross-section of FRP cross-section.

The disclosure provides drug delivery devices and methods of making and using the drug delivery devices. The devices include single and multi-layer polymer films made by a breath figure technique having therapeutic agents associated therewith. For example, the devices may be a dual layer polymer film wherein the first layer includes a therapeutic agent incorporated into it by spin coating the first agent with a polymer solution and the second agent is incorporated into the second layer by loading the agent into pores of the second layer after it is spin coated onto the first layer. In some cases one layer provides a burst release and the second layer provides a slow release drug delivery profile. The devices may take on the form of a surgical mesh with a slow release therapeutic drug.

The present invention relates to a novel process for the production of novel fiber-reinforced profile materials comprising a rigid foam core, in particular a PMI foam core. In particular, the present invention relates to a novel process which can be carried out in two variants, a short Pul-press process and a Pul-shape process. One step here produces a fiber-reinforced profile material and simultaneously inserts the rigid foam core into same. The same step moreover ensures very good binding of the rigid foam core to the fiber-reinforced profile material.

Provided herein is a process for forming a 3D object on a substrate using liquid inkjet compositions, machinery and methodologies, devoid of dry powders or UV-curable agents. The 3D object is digitally printed according to the additive approach, by inkjet printing a top layer over a base layer before curing the base layer, whereas a layer is formed as a gel, and the gelatinous object is thereafter cured.

A glass part to be made into a two-part freeform optical element is received. The glass part includes a precision freeform surface in a first specific spatial shape and a to-be-corrected surface. A non-glass material layer is added onto the to-be-corrected surface of the glass part to produce an accurate second surface in a second specific spatial shape. An optical coating is applied to the precision freeform surface of the glass part in the two-part freeform optical element.

A non-aqueous inkjet ink comprising a near infrared absorbing particle, a dispersant, a solvent, the dispersant is a polymer comprising an amine group or an acidic group and the solvent is selected from the group consisting of ketones, esters, ethers and alcohols. The non-aqueous inkjet ink can act as a fusing agent in a high speed sintering process. The non-aqueous inkjet ink is suitable for printing transparent or coloured 3D-objects.

A method is provided for manufacturing a product having a three dimensional surface layer. The method may involve applying a water based resin on an underlying surface of the product. The water based resin may be at least in part thermocurable. A UV-curable liquid may be provided onto at least one portion of the water based resin, when the water based resin is liquid or partially cured. The water based resin may be cured at least by heating. The UV-curable liquid may be optionally UV cured. The UV-curable liquid may be optionally removed. The surface layer and the underlaying surface may be optionally pressed together by a pressing device.