摘要:
There are provided a light irradiation device and a light irradiation system which are capable of correcting changes in optical power output. A light irradiation device (100) includes: a substrate having an upper surface provided with a first recess and a second recess; a light-emitting element located in the first recess, the light-emitting element emitting ultraviolet light; and a detecting element located in the second recess, the detecting element being capable of detecting ultraviolet light.
摘要:
Novel support material formulations, characterized as providing a cured support material with improved dissolution rate, while maintaining sufficient mechanical strength, are disclosed. The formulations comprise a water-miscible non-curable polymer, a first water-miscible, curable material and a second, water-miscible material that is selected capable of interfering with intermolecular interactions between polymeric chains formed upon exposing the first water-miscible material to curing energy. Methods of fabricating a three-dimensional object, and a three-dimensional object fabricated thereby are also disclosed.
摘要:
To provide a method of producing a film, comprising: ejecting a liquid B over a liquid surface of an active energy ray-curable liquid as a liquid A by an inkjet process, according to a predetermined periodic signal; and subsequently applying an active energy ray to the liquid A and the liquid B so as to perform curing and obtain a film which comprises a pattern according to any one of (1) to (4) below, (1) a smooth pattern having a periodic amplitude based upon a trigonometric function, (2) a pattern having a periodic depression, (3) a pattern in the form of a periodic flat surface, and (4) a pattern having a periodic semicylindrical shape.
摘要:
The present invention relates to methods for making highly crystalline cross-linked polymeric material, for example, highly crystalline cross-linked ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped highly crystalline cross-linked polymeric material using high pressure and high temperature crystallization processes, medical implants made thereof, and materials used therein.
摘要:
In order to provide a method for the radiation-crosslinking of elements (16) made of a radiation-crosslinkable plastics material, with which the radiation-crosslinking can be carried out more easily and cost-effectively than to date in terms of operating procedure, it is proposed that said method comprises the following steps of: placing one or more elements in a packaging unit with a receptacle (20) for the one or more elements, wherein the receptacle is produced from a poorly heat conducting material; heating the elements contained in the packaging unit to a temperature which is equal to or greater than a predetermined crosslinking temperature; introducing the heated elements in the packaging unit into an irradiation device for the radiation-crosslinking of the plastics material; and removing the packaging unit with the elements from the irradiation device following the radiation-crosslinking.
摘要:
Disclosed herein are compositions including a cross-linked polycarbonate. The cross-linked polycarbonate may be derived from a polycarbonate having about 0.5 mol % to about 5 mol % endcap groups derived from a monohydroxybenzophenone. A plaque including the composition can achieve a UL94 5VA rating. Also disclosed herein are articles including the compositions, methods of using the compositions, and processes for preparing the compositions.
摘要:
A method for making an ultra-high weight polyethylene (UHMWPE) medical implant starts with obtaining a preform consolidated from UHMWPE resin. Thereafter the preform is hot isostatically pressed at a temperature between 150°C and 190°C at a pressure up to 30,000 psi. After the hot isostatic pressing the preform is sequentially irradiated in a solid state at a total radiation dose of 2 to 10 MRad. The irradiated UHMWPE preform is then heated to a temperature of about 110°C to about 190°C for between 2 to 10 hours. The irradiated and heated preform is then cooled after each irradiation and heating to at or below 50°C, and thereafter a medical implant is formed from the preform. Alternately, the process can be performed on the medical implant itself.
摘要:
The present invention generally relates to a method for making colored contact lenses, in particular to colored silicone hydrogel contact lenses. The present invention is also related to a method of a first high intensity UV curing the colored print on the mold and a second high intensity UV treating mold for making colored silicone hydrogel contact lenses. The present invention illustrates the right combination of the first high intensity UV exposure and the second high intensity UV exposure allows a lens that maintains good ion permeability (IP) value and a good print quality.