摘要:
An injection moulded acoustic filter comprising a foil piece or filter structure having a plurality of micro-slits configured to act as acoustic channels through the foil piece for filtering sound waves impinging the foil piece. The micro-slits have a maximum slit width across a surface of the foil piece of less than one hundred micrometres and a combined slit length along the surface of the foil piece of at least five millimetres. An earplug comprising the acoustic filter. A method and mould for manufacturing the acoustic filter.
摘要:
A vented or decorative finger ring and its method of manufacture that employs a co-injection mold casting of the vented or decorative finger ring that is formed with joined outer and inner rings where the inner ring includes a plurality of interconnected lateral and longitudinal slots or grooves, where the lateral slots or grooves are space apart and extend from the inner ring edges that each connect to a series of linked longitudinal slots or grooves formed around the inner ring that extend to the inner surface of the outer ring, forming air flow paths across the inner ring, between the inner ring edges.
摘要:
A vented finger ring and its method of manufacture are provided. The vented ring includes an outer ring portion, an inner ring portion, and an anti-stretch element positioned between the outer ring portion and the inner ring portion. The inner ring portion includes lateral grooves connected to inner grooves, the connected lateral grooves and inner grooves forming at least one fluid conduit from a first side of the vented ring to a second side of the vented ring. The method includes injecting a first material into a first mold to form an outer ring portion, injecting a second material into a second mold to form an inner ring portion, and positioning an anti-stretch element between the outer ring portion and the inner ring portion. The second mold includes at least one feature on a surface thereof, the at least one feature corresponding to connected lateral grooves and inner grooves on an inner surface of the inner ring portion.
摘要:
A semiconductor encapsulation apparatus for encapsulating a semiconductor device on a substrate, the apparatus comprising a mold comprising a cavity pressure zone that is configured to be at a molding process pressure during molding, a base vacuum pump conduit connecting a base vacuum pump to the cavity pressure zone, a base vacuum valve located along the base vacuum pump conduit such that the base vacuum pump is in fluid communication with the cavity pressure zone when the base vacuum valve is open, a reservoir vacuum pump conduit connecting a reservoir vacuum pump to the base vacuum pump conduit, and a reservoir vacuum valve located along the reservoir vacuum pump conduit such that the reservoir vacuum pump is in fluid communication with the base vacuum pump conduit when the reservoir vacuum valve is open. The base vacuum pump and the reservoir vacuum pump are each operative to reduce a pressure of the cavity pressure zone to the molding process pressure when they are in fluid communication with the cavity pressure zone.
摘要:
A filter unit connecting an inner cylinder (gate connection part) to an outer cylinder includes a plurality of longitudinal ribs formed at regular intervals orthogonally to an X-axis and in parallel with a Y-axis when a virtual plane orthogonal to a central axis of the inner cylinder is assumed to be an X-Y plane. A plurality of transverse ribs is formed at regular intervals orthogonally to the longitudinal ribs and in parallel with the X-axis, and a plurality of rectangular openings is formed between the longitudinal ribs and the transverse ribs. The longitudinal ribs are formed on a front side or a rear side of the filter unit, and the transverse ribs are formed on the other of the front side and the rear side of the filter unit.
摘要:
A molding die for molding a substrate to be included in a microchip includes a first die and a second die contactable with and separable from the first die. One of the first die and the second die includes a ridge for molding the groove and a columnar first protrusion for molding at least a smallest diameter portion of a hole in the substrate, the portion having the smallest inner diameter. The other of the first die and the second die includes a second protrusion which is formed to be columnar having a diameter larger than the diameter of the first protrusion and contacts with a distal end of the first protrusion to mold the hole so as to extend through the substrate in cooperation with the first protrusion. A microchip also is provided.
摘要:
Disclosed is a production method for a bezel for display panels, whereby unnecessary material costs are reduced, a three dimensional surface shape can easily be imparted and deformation can be minimized The production method for a bezel for display panels according to the present invention comprises the steps of: (a) providing a lower mould formed so as to have a three-dimensional pattern for imparting the surface shape of the bezel at the molding surface; (b) fastening a gasket to the molding-surface edge of the lower mould; (c) fasten an upper mould, which is provided with a raw-material injection part, on the gasket on the lower mould; (d) injecting a polymeric raw material for the bezel via the raw-material injection part of the upper mould; and (e) transferring the three-dimensional pattern formed in the molding surface of the lower mould, while curing the polymeric raw material.
摘要:
A Flexible VCD Having Domed Center and Method of Making Thereof is disclosed. The disc will has a flat data storage section of its substrate that is less than 0.7 millimeters thick, while the central region of the disc is defined by a dome structure adjacent to the spindle aperture that is of standard digital disc thickness. The disc is thin enough such that its substrate is flexible. The dome structure is shaped to provide the widest compatibility with player/recorders, as well as with disc printing systems. Disc versions are available that provide conical dome structures, as well as slivered dome structures of both conical and rectangular cross-section. The method for manufacturing the discs simply requires the replacement of the conventional stamper holder with a stamper holding having a non-flat face.
摘要:
An information recording medium comprising a substrate having a recording surface provided with emboss pits or guiding grooves, a reflective film formed on the recording surface of the substrate, and a first protective film formed on the reflective film. This information recording medium is featured in that both sides of the information recording medium are constituted by a first surface provided with the protective film and by a second surface formed opposite to the first surface, and that an irradiated light beam is irradiated through the first surface, a recorded information being reproduced based on changes in light intensity of the reflected light beam. The distance between the recording surface of the substrate and the light incident surface is smaller than a thickness of the substrate, and a surface roughness “R” of the light incident surface meets a relationship represented by the following formula (1): R≦λ/(8n) (1) wherein λ is a wavelength of the light beam, and n is a refractive index of the first protective film to a light having the wavelength λ.
摘要:
Provided is a method of treating a surface of a mold to achieve good demoldability and capable of preventing wearing of the mold by avoiding load concentration on one part of the surface of the mold. After a first blasting is performed on the surface of the mold to remove a hardened layer produced on the surface and/or to adjust the surface roughness, a second blasting is performed to create fine irregularities on the surface. Then, an elastic abrasive in which abrasive grains are carried on an elastic body, or a plate-like abrasive having a planar shape with a maximum length that is 1.5 to 100 times the thickness thereof, is ejected onto the surface of the mold at an inclined ejection angle such that the abrasive is caused to slide along the mold surface to flatten peaks of the irregularities created on the mold surface.