Abstract: A decorative film structure includes: a surface layer constituted by a transparent or translucent resin layer; an achromatic layer constituted by dots provided on a back surface of the surface layer; and a metal luster layer provided on the back surface of the surface layer to fill a gap between the dots. As surface roughness of a front surface of the surface layer, an Ra is 2 ?m or less and either an Rmax is 4 ?m or less or a Sm is 50 ?m or more. A lightness L* of the achromatic layer is 0-80. An area of each dot when viewed from a front side of the surface layer is 10?3-105 ?m2. A dot area percentage per a unit area when viewed from the front side of the surface layer is 1-80%. A stimulus value Y45° of the metal luster layer is 10000 or more.

Abstract: A decorative film structure includes: a surface layer constituted by a transparent or translucent resin layer; a metal luster layer constituted by dots provided on a back surface of the surface layer; and an achromatic layer provided on the back surface of the surface layer to fill a gap between the dots. As surface roughness of a front surface of the surface layer, an Ra is 2 ?m or less and either an Rmax is 4 ?m or less or a Sm is 50 ?m or more. A stimulus value Y45° of the metal luster layer is 10000 or more. An area of each dot when viewed from a front side of the surface layer is 10?3-105 ?m2. A dot area percentage per a unit area when viewed from the front side of the surface layer is 20-99%. A lightness L* of the achromatic layer is 0-80.

Abstract: A decorative film structure includes: a surface layer constituted by a transparent or translucent resin layer; an achromatic layer constituted by dots provided on a back surface of the surface layer; and a metal luster layer provided on the back surface of the surface layer to fill a gap between the dots. As surface roughness of a front surface of the surface layer, an Ra is 2 ?m or less and either an Rmax is 4 ?m or less or a Sm is 50 ?m or more. A lightness L* of the achromatic layer is 0-80. An area of each dot when viewed from a front side of the surface layer is 10?3-105 ?m2. A dot area percentage per a unit area when viewed from the front side of the surface layer is 1-80%. A stimulus value Y45° of the metal luster layer is 10000 or more.

Abstract: A membrane panel switch is formed by cutting holes in a sheet of extruded foam-molded polypropylene having a thickness greater than 2 mm. The sheet is placed on a printed circuit board with a pair of contact elements located in each of the holes. Clicking plates with extensions projecting from them are placed in the holes in contact with one contact element and spaced from the other. A press plate with a spherical upper surface and holes in the lower surface is placed in each of the sheet holes with the clicking plate extensions projecting into the press plate's lower surface holes. An insulating layer is coupled to the to cover the sheet holes and components therein.

Abstract: A membrane panel switch is disclosed wherein a sheet of extruded foam-molded polypropylene with apertures for switches has a thickness greater than 2 mm, a printed circuit board has a pair of contact elements disposed within the aperture, a clicking plate in the aperture contacts with one of the contact elements and is spaced from the other of the contact elements, the clicking plate has projections at ends thereof extending to an opening of the aperture from a bottom pf the aperture, a press plate in the aperture has a spherical upper surface and lower surface contacting the clicking plate, the press plate further has holes in where the projections are inserted and guided and an insulating layer coupled to the sheet extending over the aperture and over the spherical upper surface.

Abstract: The disclosure relates to a compact apparatus which effectively washes holes of printed circuit cards, flushes exfoliation off printed circuit cards and nameplates after etching, degreases and flushes number-plates before painting, and cleans iron, plastic, and glass plates, wherein a processing cistern is divided into a carry-in compartment (A), a cleaning compartment (B), a water-wash finishing compartment (C) and a drying compartment (D), the carry-in compartment (A) comprising an infeed roller, a pair of rubber rollers mounted vertically facing each other at a certain forward position thereof and a cleaning solution shut-out roller rotatable by the lower roller of the pair, the cleaning compartment (B) comprising a pair of rubber rollers vertically facing each other at a certain forward position of the pair of rubber rollers, a cleaning solution shut-out roller rotatable by the lower roller thereof, transfer rollers with conveying belts stretched therebetween so mounted that they may be rotated at the sam

Abstract: This printed circuit plate washing apparatus is used for effectively washing the openings of printed circuit plates, eliminating a cleaning water after etching printed circuit plates or nameplates, degreasing aluminum plates before printing and number plates before painting and washing iron, plastic or glass plates. For these purposes, said apparatus is divided into three sections (or chambers) such as a bring-in chamber, a washing chamber, and a wash-out/finishing chamber. Further, this washing line of said apparatus is so composed that a plate to be washed may be elevated in slope with a certain fixed angle for the level line from said bring-in chamber toward said wash-out/finishing chamber, thereby a washing water being overflown to said washing chamber and to said bring-in chamber in this order through respective partition plate. And a carrying means is provided in every chamber by means of belt, chain or wire net.