摘要:
An upper die has a cavity member constituting an inner bottom surface of a cavity, and a surrounding member. The cavity member is formed of a low adhesion material in accordance with the present invention, and includes a body portion and a surface layer formed on an undersurface of the body portion exposed to a fluid resin. The body portion is formed of a first material of 3YSZ and a second material of ZrN that are mixed at a predetermined ratio. The surface layer is formed of Y2O3 having a low adhesion property with respect to a set resin, and has a thermal expansion coefficient smaller than that of the body portion. By bonding the body portion and the surface layer at a high temperature and then cooling them down, compressive residual stress is caused in the surface layer due to a difference in the thermal expansion coefficients thereof, and the compressive residual stress is present in the surface layer.
摘要:
A mold surface (6) of an upper mold (1) with which a fluid resin comes into contact has an oxide (3) therein. The oxide (3) contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and an ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface (6), releasability between the cured resin and the mold surface (6) is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface (6) is established. With this evaluation method, a material with high releasability (3) can readily be provided. Further, if the material with high releasability (3) is used for the mold surface (6) of the upper mold (1), a mold for molding a resin having excellent releasability can be obtained.
摘要:
A transmission source bridge collects packets sent from nodes connected to a serial bus in accordance the IEEE1394 Standards, into one packet in an order they are to be transmitted and then sends them onto an ATM network, so that a transmission destination bridge receives this packet and divides it into a plurality of smaller packets and transfers them, in the order they were sent, to nodes connected to the serial bus in accordance with the IEEE1394 Standards.
摘要:
A resin mold material includes one-dimensional communicating holes extending substantially linearly from a mold surface and having diameters from 1 nm to less than 10 μm; a surface layer including the mold surface and the one-dimensional communicating holes; a support layer covering a back of the surface layer; and three-dimensional communicating holes communicating with the one-dimensional communicating holes in the support layer and having diameters larger than those of the one-dimensional communicating holes. Accordingly, a liquid resin is unlikely to enter the one-dimensional communicating holes, thereby reducing a contact area of the mold surface and the liquid resin, i.e., the mold surface is repellant to the liquid resin. Gas in a mold cavity bounded by the mold surface is discharged through the one-dimensional and three-dimensional communicating holes sequentially. Consequently, a release property of a molded product from the mold surface is improved and generation of voids is suppressed.
摘要:
A transmission source bridge collects packets sent from nodes connected to a serial bus in accordance the IEEE1394 Standards, into one packet in an order they are to be transmitted and then sends them onto an ATM network, so that a transmission destination bridge receives this packet and divides it into a plurality of smaller packets and transfers them, in the order they were sent, to nodes connected to the serial bus in accordance with the IEEE1394 Standards.
摘要:
A transmission source bridge collects packets sent from nodes connected to a serial bus in accordance the IEEE1394 Standards, into one packet in an order they are to be transmitted and then sends them onto an ATM network, so that a transmission destination bridge receives this packet and divides it into a plurality of smaller packets and transfers them, in the order they were sent, to nodes connected to the serial bus in accordance with the IEEE1394 Standards.
摘要:
A mold surface (6) of an upper mold (1) with which a fluid resin comes into contact has an oxide (3) therein. The oxide (3) contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and an ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface (6), releasability between the cured resin and the mold surface (6) is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface (6) is established. With this evaluation method, a material with high releasability (3) can readily be provided. Further, if the material with high releasability (3) is used for the mold surface (6) of the upper mold (1), a mold for molding a resin having excellent releasability can be obtained.
摘要:
A resin molding die has a molding surface formed of a low adhesion material formed of a solid solution of La—Y2O3 produced from Y2O3 and an other oxide of La2O3. La2O3 contains La, which has an ionic radius larger than Y3+, and is larger in basicity than Y2O3. The low adhesion material contains La2O3 at a predetermined ratio relative to a total of Y2O3 and La2O3. The low adhesion material thus has a large iconic radius contributing to a smaller number of sites per unit area than Y2O3, a larger basicity contributing to a smaller force binding the low adhesion material with a basic substance than Y2O3, and a ratio contributing to shape retention. The low adhesion material thus less adhesive and more shape-retentive than Y2O3 configures the molding surface. A low adhesion material that is less adhesive to a basic substance than Y2O3 is and excellently shape-retentive, and an excellently releasable and shape-retentive resin molding die can thus be obtained.
摘要翻译:树脂成形模具具有由由Y 2 O 3制成的La-Y 2 O 3和La 2 O 3的其它氧化物的固溶体形成的低粘合性材料形成的成型面。 La2O3含有大于Y3 +的离子半径的La,其碱度比Y2O3大。 低粘附性材料相对于Y 2 O 3和La 2 O 3的总量以预定比例含有La 2 O 3。 因此,低粘附性材料具有大的标志性半径,有助于每单位面积比Y2O3更少的位置数,较大的碱度有助于结合低粘合材料与碱性物质比Y2O3更小的力,以及有助于形状保持的比例 。 因此,低粘合性材料因此比Y2O3更少的粘合性和更形状保持性构成了模制表面。 与Y 2 O 3相比,对碱性物质的粘合性较差的低粘合性材料具有良好的保持性,因此可以获得良好的脱模性和形状保持性的树脂成型模具。
摘要:
A mold surface of an upper mold with which a fluid resin comes into contact has an oxide therein. The oxide contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface, releasability between the cured resin and the mold surface is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface is established. With this evaluation method, a material with high releasability can readily be provided. Further, if the material with high releasability is used for the mold surface of the upper mold, a mold for molding a resin having excellent releasability can be obtained.
摘要:
A mold for resin-seal-molding an electronic component is constituted by a first mold and a second mold. At a mold face (PL face) of the molds, a substrate supply-set surface having a flat shape without a step is provided. A pot block is joined with and separated from a side position of the mold intersecting perpendicularly with the mold face (PL face) of the molds. In a state where the mold face and the pot block are joined, a molten resin material in the pot block is injected into a cavity. The overall structure of the mold for resin-seal-molding an electronic component mounted on the substrate is simplified. Additionally, when resin-seal-molding the electronic component, a problem of variation in the thicknesses of the substrates is solved. Thus, resin flash formation on the substrate surface is prevented.