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    • 33. 发明申请
    • Process for producing molded article of reclaimed thermoplastic resin
    • 回收热塑性树脂成型体的制造方法
    • US20050127579A1
    • 2005-06-16
    • US10502116
    • 2003-01-23
    • Yasuhiro Suzuki
    • Yasuhiro Suzuki
    • B29B17/00B29C44/34B29C45/17B29D22/00B29C45/00
    • B29C44/3411B29B17/0042B29C45/1704Y02W30/62
    • The object of the present invention is to provide a recycled molded article, not having defects such as sink, warping, bending, and the like, and whose molding contraction does not change substantially depending on its recycle turn number so that said molded article having a good dimensional stability can be manufactured without changing design of the injection molding machine or molding conditions in every turn. To attain this object, the gas assist injection molding method or the expansion injection molding method wherein gas pressure or expansion pressure is effected on the melted molding material mixture in the mold, are applied in the present invention. By applying these methods, the melted molding material mixture may fill the mold uniformly and contraction strain by cooling may be absorbed in the inner hollow or the foamed structure in the resulting molded article, and further change of mold contraction depending on recycle turn number is reduced to obtain a molded article having a good dimension stability.
    • 本发明的目的是提供一种不具有凹陷,翘曲,弯曲等缺陷的再循环成型品,其成型收缩根据其循环回转数不发生显着变化, 可以在不改变注塑机的设计或每一轮的成型条件的情况下制造良好的尺寸稳定性。 为了达到上述目的,在本发明中应用气体辅助注射成型法或膨胀注射成型法,其中在模具中熔融的成型材料混合物上进行气体压力或膨胀压力。 通过应用这些方法,熔融的成型材料混合物可以均匀地填充模具,通过冷却的收缩应变可以被吸收到所得模制品中的内部中空或发泡结构中,并且根据再循环转数而进一步改变模具收缩 以获得具有良好尺寸稳定性的模塑制品。
    • 36. 发明授权
    • Molding thermoplastic resin material and a method for equal quality recycle of thermoplastic resin mold
    • 热塑性树脂模塑成型和热塑性树脂模具等质量循环的方法
    • US06703445B2
    • 2004-03-09
    • US09969975
    • 2001-10-03
    • Yasuhiro Suzuki
    • Yasuhiro Suzuki
    • C08K554
    • C08J11/06B29B17/00Y02W30/62Y02W30/701
    • The object of the present invention is to provide a molding thermoplastic resin material giving resin mold whose quality and value are substantially equal to original resin mold even in a case where said resin mold is recycled. To attain said object, olefin group rubber and/or acrylic rubber to which monomer(s) being the same or similar monomer as (to) monomer(s) composing said molding thermoplastic resin material is(are) graft-copolymerized to give said rubbers compatibility with said molding thermoplastic resin material is(are) added in said molding thermoplastic resin material to improve said equal quality recycling property (property that quality and value are substantially equal to original thermoplastic resin mold even in a case where said thermoplastic resin mold is recycled). Said olefin group rubber and/or said acrylic rubber has(have) excellent thermal stability, heat-resistance, ozone resistance, oxidation resistance, and durability and has(have) effect on improvement of impact resistance for said thermoplastic resin material which is substantially immutable against heat history affected by repeated recycles and said molding thermoplastic resin material of the present invention can be used as a resin material of equal quality resin mold whose quality and value are substantially equal to resin mold using virgin resin material even in a case where said resin mold is recycled.
    • 本发明的目的是提供一种成型热塑性树脂材料,其树脂模具的质量和价值基本上等于原始树脂模具,即使在所述树脂模具被再循环的情况下,为了达到上述目的,烯烃基橡胶和/或 丙烯酸橡胶与构成所述成型热塑性树脂材料的(单体)单体相同或相似的单体被接枝共聚以使所述橡胶与所述成型热塑性树脂材料相容, 添加在所述成型热塑性树脂材料中以改善所述相同质量的再循环性能(即使在所述热塑性树脂模具被再循环的情况下,其质量和数值基本上等于原始热塑性树脂模具的性质)。烯烃基橡胶和/或所述丙烯酸酯 橡胶具有优异的热稳定性,耐热性,耐臭氧性,抗氧化性和耐久性,并具有对改进的影响 所述热塑性树脂材料的电阻基本上不能反映受重复再循环影响的热历史,并且本发明的所述模塑热塑性树脂材料可用作等品质树脂模具的树脂材料,其质量和值基本上等于树脂模具 即使在所述树脂模具被再循环的情况下也使用原始树脂材料。
    • 39. 发明授权
    • Lead frame free of irregular deformation
    • 引线框架无变形
    • US5763942A
    • 1998-06-09
    • US800297
    • 1997-02-13
    • Yasuhiro Suzuki
    • Yasuhiro Suzuki
    • H01L23/50H01L23/495
    • H01L23/49541H01L2924/0002
    • There is provided a lead frame including an outer frame, a die pad on which a semiconductor device is to be mounted, a plurality of outer leads extending from the outer frame to the die pad, a dam bar connected at opposite ends thereof to the outer frame for connecting the outer leads to one another for prevention of resin overflow, and a support lead extending obliquely to the dam bar for connecting the die pad to the outer frame. The outer frame is formed beyond an end of the dam bar with an opening extending in a direction making an angle with a direction in which the dam bar longitudinally extends so that there is formed an elastically deformable portion between the opening and an end of the dam bar, the opening having a length covering at least a width of the dam bar. When there is generated a stress because of shrinkage of resin with which a semiconductor device is sealed, the elastically deformable portion is first deformed by absorbing a stress to thereby prevent the stress from spreading further to the dam bar. Thus, it is possible to prevent irregular bending of outer leads connected by the dam bar with each other. As a result, higher accuracy is expected with respect to a position of outer leads after a semiconductor device is sealed with resin.
    • 提供了一种引线框架,其包括外框架,其上安装有半导体器件的管芯焊盘,从外框架延伸到管芯焊盘的多个外引线,在其两端连接到外管 用于将外引线彼此连接以防止树脂溢出的框架,以及倾斜延伸到坝条的支撑引线,用于将管芯焊盘连接到外框架。 外框架形成为超过阻挡杆的端部,开口沿与坝条纵向延伸的方向成一角度的方向延伸,使得在开口和坝的端部之间形成可弹性变形的部分 所述开口具有覆盖所述坝条的至少宽度的长度。 当由于密封半导体器件的树脂的收缩而产生应力时,首先通过吸收应力来使可弹性变形部变形,从而防止应力进一步扩散到堤坝。 因此,可以防止由堤坝彼此连接的外部引线的不规则弯曲。 结果,在用树脂密封半导体器件之后,相对于外部引线的位置,期望更高的精度。