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    • 6. 发明授权
    • Keytop for push-button switches, and method of manufacturing same
    • 按钮开关的键盘及其制造方法
    • US5399821A
    • 1995-03-21
    • US138260
    • 1993-10-20
    • Jiro InagakiAtsushi HariNobuyuki YagiYasutoshi KakuTakashi Shinoki
    • Jiro InagakiAtsushi HariNobuyuki YagiYasutoshi KakuTakashi Shinoki
    • B29C45/14H01H13/705H01H3/12
    • H01H13/705B29C45/1418H01H2219/028H01H2221/002H01H2221/07H01H2223/002H01H2229/044H01H2229/047
    • A push-button switch keytop includes a flexible resin film deformed in such a manner that the resin film bulges upwardly to form a curved portion that is filled with a molding resin while the resin film is being deformed. The molding resin is allowed to harden to form a keytop body, whereby the top side of the keytop body consisting of the molding resin is integrated with the resin film in a state in which the top side of the keytop body is covered by the resin film. The keytop is manufactured by clamping a resin film between upper and lower molds, charging a molten resin from a pin gate provided on the lower mold into a cavity provided in the lower mold, thereby deforming and urging the resin film upward by pressure and heat produced by the molten resin and causing the resin film to adhere to the inner surface of the upper mold, filling the cavities of the upper and lower molds with the molten resin and separating the upper and lower molds after the resin hardens. An adhesive layer may be provided directly or indirectly via another printed layer on the underside of the resin film on that portion thereof where the keytop is located.
    • 按钮开关键盘包括柔性树脂薄膜,该树脂薄膜以树脂薄膜向上凸起形成弯曲部分,该树脂薄膜在变形时填充有模制树脂。 使成形树脂硬化以形成键顶体,由此由成型树脂构成的键帽体的上侧与树脂膜一体化,其中键帽体的顶侧被树脂膜覆盖 。 键帽是通过在上模和下模之间夹持树脂膜来制造的,从设置在下模上的销门将熔融树脂装入设置在下模中的空腔中,从而通过压力和热产生向上的树脂膜的变形和推压 通过熔融树脂使树脂膜粘附到上模的内表面,用熔融树脂填充上模和下模的空腔,并在树脂硬化之后分离上模和下模。 粘合剂层可以直接或间接地通过树脂膜的位于键顶的部分上的另一个印刷层上提供。
    • 8. 发明授权
    • Method of affixing synthetic resin film and molding resin
    • 固定合成树脂薄膜和模塑树脂的方法
    • US6086810A
    • 2000-07-11
    • US800210
    • 1997-02-12
    • Jiro InagakiTakashi Shinoki
    • Jiro InagakiTakashi Shinoki
    • B29C45/14B29K33/04B29K67/00B29K69/00B29K101/12
    • B29C45/1418B29C2045/14319
    • A method of strongly affixing a molding resin to a synthetic resin film in direct fashion includes preparing a synthetic resin film and a molding resin each of which consists of a thermoplastic material, stretching a prescribed surface of the synthetic resin film, simultaneously bringing the molten, high-temperature molding resin into contact with the surface of the synthetic resin film, while stretching of the surface thereof is in progress, in such a manner that the molding resin presses directly against this surface in a state of high pressure, and subsequently cooling a surface of contact between the synthetic resin film and molding resin to a temperature at which the molten molding resin solidifies. As a result, the surfaces of contact between the synthetic resin film and molding resin are directly and strongly fused.
    • 将成型树脂直接固定在合成树脂薄膜上的方法包括制备合成树脂薄膜和模塑树脂,它们由热塑性材料组成,拉伸合成树脂薄膜的规定表面,同时使熔融的, 高温成型树脂与合成树脂膜的表面接触,同时其表面的拉伸正在进行中,使得模塑树脂在高压状态下直接压在该表面上,然后冷却 合成树脂膜与模塑树脂之间的接触表面达到熔融模塑树脂固化的温度。 结果,合成树脂膜与成型树脂之间的接触表面直接强烈熔融。