摘要:
A photo-curable resin composition suitable as a material for photo-fabricating and capable of producing cured products with excellent mechanical strength and high heat resistance. Further disclosed is a process for molding a resin-based mold which provides superior molding dimensional precision and superb repetition durability. The resin composition contains a monomer component containing (A) 30-70 wt % of a polyfunctional unsaturated monomer having a cyclic structure and (B) 70-30 wt % of a monofunctional unsaturated monomer having a cyclic structure of which the homopolymer has a glass transition temperature (Tg) of 70.degree. C. or higher; (C) a photo-initiator; and (D) an inorganic filler having an average particle diameter or an average fiber length of 1-50 .mu.m, wherein the ratio of the inorganic filler to 100 parts by volume of the monomer components and the photo-initiator is 100-160 parts by volume, and the heat distortion temperature of the cured resin produced from the photo-curable resin composition is 100.degree. C. or higher.
摘要:
A photo-curable resin composition suitable as a material for optical molding. The composition can produce cured products with excellent mechanical strength and high heat resistance. Further disclosed is a process for molding a resin-based mold which provides superior molding dimensional precision and superb repetition durability. The composition contains a monomer component which contains (A) 20-80 wt % of a urethane-bond polyfunctional (meth)acrylate having a number average molecular weight of 1,000 or less and (B) 80-20 wt % of an ethylenically unsaturated monomer containing a cyclic structure and at least one ethylenically unsaturated bond in the molecule and of which the homopolymer has a glass transition temperature of 50.degree. C. or higher; (C) a photopolymerization initiator; and (D) an inorganic filler having an average particle diameter or an average fiber length of 1-50 .mu.m, wherein the ratio of the inorganic filler for 100 parts by volume of said monomer components and the photopolymerization initiator is 100-160 parts by volume, and the heat distortion temperature of the cured resin produced from the photo-curable resin composition is 80.degree. C. or higher.
摘要:
An optical forming apparatus which can form a homogeneous three-dimensional object exhibiting desired properties over all parts, while effectively suppressing sedimentation of filler even though the filler is easily precipitated in a photo-curable resin composition. The optical forming apparatus can produce a three-dimensional object consisting of laminated layers of cured resin produced by repetition of forming cured resin layers by selectively irradiating a photo-curable liquid resin composition placed in a container (20), wherein the apparatus is characterized by having a means (60) for circulating the photo-curable liquid resin composition.
摘要:
Process for the manufacture of a mold for making products from fibrous materials by performing a combination of steps of(1) applying a thin layer of resin on a supporting stage(2) selectively irradiating the thin layer of resin as to cure a selected part of said resin(3) applying a further thin layer of resin, and repeating steps (2) and (3) as to obtain a three dimensional shape of a plurality of cured layers, optionally combined with either one of the steps of washing and post-curing the three dimensional shape, as to obtain the mold, wherein the resin ocmpositiona is formulated from constituents comprises at least one photoreaction monomer at least one photoinitiator at least one filler.
摘要:
Disclosed herein is an anisotropically conductive sheet that exhibits conductivity in its thickness-wise direction, and is suitably used as a connector.The anisotropically conductive sheet of the first feature may comprise a plurality of columner conductive parts extending in the thickness-wise direction and a semiconductive part that exhibits semiconductivity in its plane direction. In the sheet, respective conductive parts may be surrounded by the semiconductive part with an insulating part therebetween. The sheet may comprise conductive particles contained in a sheet member exhibiting semiconductivity in a state oriented so as to be arranged in the thickness-wise direction thereof.The sheet of the second feature has a static charge-eliminating layer integrally provided on the surface of a sheet member.The sheet of the third feature has a conductive part for static-charge elimination to be connected to a ground.The sheet can inhibit static electricity from being accumulated on the surface thereof.
摘要:
An anisotropically conductive sheet that can surely achieve necessary electrical connection even to an object to be connected, the arrangement pitch of electrodes to be connected of which is extremely small, a production process thereof, and applied products equipped with the anisotropically conductive sheet. The anisotropically conductive sheet according to the present invention has an insulating sheet body formed of an elastic polymeric substance, in which a plurality of through-holes for forming conductive paths, each extending in a thickness-wise direction of the insulating sheet body, have been formed, and conductive path elements integrally provided in the respective through-holes for forming conductive paths of the insulating sheet body. The through-holes for forming conductive paths are formed by using a mask for exposure, in which a plurality of through-holes for beam transmission, the diameter of each of which becomes gradually small from one surface toward the other surface of the mask, have been formed in accordance with a pattern corresponding to a pattern of conductive path elements to be formed, and irradiating the insulating sheet body with a laser beam through the through-holes for beam transmission from the other surface side of the mask for exposure.
摘要:
Disclosed herein is an anisotropically conductive sheet that exhibits conductivity in its thickness-wise direction, and is suitably used as a connector. The anisotropically conductive sheet of the first feature may comprise a plurality of columner conductive parts extending in the thickness-wise direction and a semiconductive part that exhibits semiconductivity in its plane direction. In the sheet, respective conductive parts may be surrounded by the semiconductive part with an insulating part therebetween. The sheet may comprise conductive particles contained in a sheet member exhibiting semiconductivity in a state oriented so as to be arranged in the thickness-wise direction thereof. The sheet of the second feature has a static charge-eliminating layer integrally provided on the surface of a sheet member. The sheet of the third feature has a conductive part for static-charge elimination to be connected to a ground. The sheet can inhibit static electricity from being accumulated on the surface thereof.
摘要:
The invention provides an inspection adapter board for printed board, which has inspection electrodes of a pitch wider than electrodes to be inspected, permits carrying out the necessary inspection for a printed board by a tester having a small capacity, and can be designed and fabricated with ease, and a method for inspecting the printed board by an inspection adapter board. The invention also provides a method and apparatus for producing information for fabricating such an inspection adapter board. The inspection adapter board is equipped with inspection electrodes corresponding to the electrodes to be inspected. At least one of the inspection electrodes is a common inspection electrode commonly corresponding to two or more electrodes to be inspected. The common inspection electrode is formed in a state that wiring networks do not form a closed circuit. Alternatively, at least one of the inspection electrodes is formed as a representative inspection electrode corresponding to one electrode to be inspected in each wiring network.
摘要:
A process for inspecting an electrode plate having plural electrodes. The process includes the first step of using a rough alignment between the plate to be inspected and the standard inspecting plate so that the two lie on top of each other. One of the plates is then rotated relative to the other by a predetermined small angle. The electrical connection state between the two plates is then determined. A mathematical analysis of the position deviation between the two plates takes place. The analysis is based on the relative positions of the electrode inspected and the corresponding inspecting electrode before and after the rotation.