The invention provides a method for making silicone hydrogel contact lenses. The method of the invention is characterized by using an organic solvent as a processing-aid tool for controlling lens diameter without significantly affecting lens equilibrium water content during cast-molding of soft contact lenses from a polymerizable composition. By adjusting the weight percentage of the organic solvent in a polymerizable composition for making SiHy contact lenses, one can adjust lens diameter of produced SiHy lenses to meet target without affecting adversely the lens properties.

A oil gel composition, consisting essentially of: 65-80 wt. % of a mineral oil, 15-25 wt. % of a hydrogenated styrenic block copolymer (HSBC), 1 to 15 wt. % of glass spheres having an average particle size of at least 15 microns, 1 at least 50 wt. % of a plasticizer selected from mineral oil, a paraffinic oil, an oil-enriched in paraffin, and mixtures thereof, and 0.25-5 wt. % of a tack reducing component selected from the group of steric acid, metal stearates, long chain fatty acids, fatty acid salts, fatty acid esters, amide waxes, ethylene-bis-stearamides, erucamide, polyester modified siloxanes, and mixtures thereof. The oil gel composition has an average peel strength of less than 0.3 lbf/in measured according to ASTM D 1876. Articles formed from the oil gel composition are characterized as being tack-free.

The invention provides a method producing contact lenses, comprising the step of: separating the mold into the male and female mold halves, with the silicone hydrogel contact lens adhered on one of the male and female mold halves; bring a shaped ultrasonic horn in direct contact with at least one area of a non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon; and applying a ultrasonic vibrational energy to the at least one area of the non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon so as to separate the molded silicone hydrogel contact lens from the mold half attached thereon.

There is provided a 3D printing system, methods, and materials for the 3D printing of objects that include a cured hydrogel material, an uncured hydrogel material, and a support material. The cured hydrogel material may define a scaffold for organs or other biological structures. The 3D printing system selectively deposits the hydrogel material and support material, dries the hydrogel material, and selectively applies a catalyst to the hydrogel material to selectively cure the hydrogel material. Once the 3D printing has completed, the uncured hydrogel material may be drained and the support material may be melted or dissolved leaving a scaffold of cured hydrogel material that may be infused with living cells of the desired organ or biological structure.

A method for making a mold is provided. The method includes the following steps a) to d): a) in which a polymer solution is discharged from a liquid droplet discharger onto a stage, where the polymer solution is capable of solating at a temperature lower than a sol-gel transition temperature and gelating at a temperature higher than the sol-gel transition temperature; b) in which the polymer solution discharged onto the stage is maintained at a temperature higher than the sol-gel transition temperature; c) in which the liquid droplet discharger and the stage are relatively moved to form a gel layer on the stage, where the gel layer has a shape corresponding to a locus of the relative movement; and d) in which the polymer solution is discharged from the liquid droplet discharger onto the gel layer to laminate another gel layer thereon and obtain a laminated object.

A composition comprising a first material and a second material, wherein said first material is cross-linkable by a first cross-linking reaction and said second material is cross-linkable by a second cross-linking reaction, wherein said first cross-linking reaction and said second cross-linking reaction are inducible by a common activator.

A solid freeform fabrication object includes a hydrogel including a polymer, water, and a coloring material inclusion substance.

Disclosed is a press-molding apparatus for a cosmetic patch, suitable for use in cutting a piece of patch fabric to a predetermined shape while being pressed using a press, including: a planar pressing plate, which forms a pressing portion of the press; at least one cutter, which is fixedly secured to the lower surface of the pressing plate and protrudes therefrom so as to cut the piece of patch fabric through pressing of the press, and is formed in a cylindrical shape so that a plurality of stacked pieces of patch fabric is simultaneously cut and the cut pieces of patch fabric are received in the space inside the cutter; and an ejector, which separates the pieces of patch fabric received in the cutter from the cutter.

The disclosure relates to articles and components thereof, including outsoles, which can be used in conditions normally conducive to the accumulation of soil. In particular, the articles has a substrate body, a material including a hydrogel secured to the substrate body, and a mesh component present on and/or adjacent to a second side of the hydrogel-containing material opposing the first side. The article can prevent or reduce the accumulation of soil during use.

The disclosure relates to articles and components thereof, including outsoles, which can be used in conditions normally conducive to the accumulation of soil. In particular, the articles have substrate body, a tie layer secured to the substrate body, and a material including a hydrogel secured to the tie layer. The material can prevent or reduce the accumulation of soil during use. The presence of the tie layer can minimize or prevent delamination of the hydrogel containing material during normal use.