Abstract:
Disclosed are a work glove, which prevents slip and improves wearability by using waterborne polyurethane dispersion foam and halite, and a method of fabricating the same. The method includes (a) preparing pre-treatment solution consisting of methanol and a calcium nitrate or the methanol and an acid-based material, (b) depositing the glove into the prepared pre-treatment solution and drying the glove, (c) coating a waterborne polyurethane dispersion foam on a portion of a surface of the dried glove by dipping the portion of the surface of the glove into the waterborne polyurethane dispersion foam, and (d) applying a surface-treatment powder to the coated portion of the glove and drying the coated portion of the glove.
Abstract:
Technologies are generally described to increase a surface smoothness of a 3D printed article implementing a water-based treatment using layer by layer (LBL) deposition. An initial 3D printed article having an anionic surface may be treated with a first aqueous solution comprising at least one polycation that may bind to the anionic surface to produce a first treated surface, which may be rinsed with water to remove the first aqueous solution. The first treated surface may be treated with a second aqueous solution comprising at least one anionic microparticle that may bind to the polycation to produce a final 3D printed article having a second treated surface, which may be rinsed with water to remove the second aqueous solution. The bound polycation and anionic microparticle may be present as a single layer in the final 3D printed article that may act as a conformal coating to increase the surface smoothness.
Abstract:
Various embodiments disclosed relate to melt-stabilized materials including ultra high molecular weight polyethylene (UHMWPE), methods of making the same, and medical implants including the same. In various embodiments, the present invention provides a method of melt-stabilizing a material including UHMWPE. The method includes obtaining or providing a solid material including UHMWPE including a first concentration of free-radicals. The method includes coating at least part of the solid material with a liquid composition including at least one antioxidant, to provide a coated solid material. The method includes heating the coated solid material in an environment including oxygen, the heating being sufficient to melt at least part of the UHMWPE, to provide a heated material. The method also includes solidifying the heated material, to provide a melt-stabilized material including UHMWPE including a second concentration of free-radicals, wherein the second concentration of free-radicals is less than the first concentration of free-radicals.
Abstract:
There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.
Abstract:
A pinch valve tube according to the present invention includes a fluororubber tube, the entirety of which is formed integrally of fluororubber and having an internal cavity arranged as a flow passage for a fluid, and a crosslink density of the fluororubber forming an inner surface of the flow passage is made higher than an average crosslink density of the entirety.
Abstract:
The invention relates to a method for unpacking a component (11) produced by means of an additive product method from a particulate-material fill (9) of loose, unconsolidated particulate material, which fill is arranged together with the component (11) in a construction chamber (5) and surrounds the component (11). In order to unpack the component (11), the particulate-material fill (9) surrounding the component (11) is converted into a fluidized bed, such that the loose, unconsolidated particulate material is fluidized, and the fluidized unconsolidated particulate material is drained from the construction chamber (5) downward. The invention further relates to a device for use in the method.