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6 条记录 (耗时 0.016 秒)

    Process for a diaphragm for electroacoustic transducers
    1.
    发明授权
    Process for a diaphragm for electroacoustic transducers 失效
    电声换能器隔膜的工艺

    公开(公告)号：US06655001B1

    公开(公告)日：2003-12-02

    申请号：US09926706

    申请日：2002-02-12

    申请人： Dirk Roosen ,  Leonhard Maier ,  Hermann Seibert

    发明人： Dirk Roosen ,  Leonhard Maier ,  Hermann Seibert

    IPC分类号： H04R3100

    CPC分类号： B32B37/18 ,  B32B2305/022 ,  B32B2309/02 ,  B32B2309/12 ,  B32B2333/04 ,  H04R7/125 ,  H04R31/003 ,  Y10T29/42 ,  Y10T29/49005 ,  Y10T29/49126

    摘要： A diaphragm for an electroacoustic transducer has a) a core layer containing poly(meth)acrylimide foam and b) at least one cover layer. The diaphragm is produced by laminating the cover layer with the core layer, using a pressure of 0.4 MPa and a temperature of 160° C., whereby at least the side of the core layer which comes into contact with the cover layer is compressed. The resultant composite is subsequently cooled to a temperature below 80° C., before the pressure is reduced to the ambient pressure. The process can be carried out as a single-step process. The diaphragms produced by this process demonstrate an excellent stability, whereby the cover layers in particular are highly resistant to separation.

    摘要翻译： 用于电声换能器的隔膜具有：a）含有聚（甲基）丙烯酰亚胺泡沫的芯层和b）至少一个覆盖层。 隔膜通过使用0.4MPa的压力和160℃的温度将覆盖层与芯层层压而制成，由此至少与覆盖层接触的芯层的一侧被压缩。 随后将所得复合材料冷却至低于80℃的温度，然后将压力降至环境压力。 该过程可以作为单步过程进行。 通过该方法制备的隔膜显示出优异的稳定性，由此覆盖层特别是高度抵抗分离。

    Method for making laminates comprising a hard foam layer and a fiber-reinforced synthetic resin layer
    5.
    发明授权
    Method for making laminates comprising a hard foam layer and a fiber-reinforced synthetic resin layer 失效
    制造包含硬泡沫层和纤维增强合成树脂层的层压体的方法

    公开(公告)号：US4316934A

    公开(公告)日：1982-02-23

    申请号：US164564

    申请日：1980-06-30

    申请人： Leonhard Maier ,  Wolfgang Pip

    发明人： Leonhard Maier ,  Wolfgang Pip

    IPC分类号： B32B37/16 ,  B29C35/00 ,  B29C63/00 ,  B29C71/00 ,  B29D1/00 ,  B32B5/24 ,  B32B5/28 ,  B32B37/00 ,  B32B5/18 ,  B29D27/00 ,  B32B5/16

    CPC分类号： B32B5/24 ,  Y10T428/249958 ,  Y10T428/249991

    摘要： What is disclosed is a method for making a laminate comprising a hard foam layer and a fiber-reinforced synthetic resin layer, which method comprises heating and compressing, in two steps, at least one layer of a high-temperature resistant hard foam and at least one layer of a fiber-containing synthetic resin capable of flowing and of hardening when heated, wherein in a first step, the temperature and pressure employed are sufficient for initiating flow of the synthetic resin and are applied until the synthetic resin has completed flowing, said pressure having a value exceeding the compressive strength of the foam at the temperature employed but not exceeding its compressive strength at room temperature and, wherein in a second step, at a temperature and for a time sufficient to complete hardening of the synthetic resin, pressure is applied which does not exceed the compressive strength of the foam at the temperature used.

    摘要翻译： 所公开的是制造包含硬质泡沫层和纤维增强合成树脂层的层压体的方法，该方法包括以两步加热和压缩至少一层耐高温硬泡沫和至少 一层加热时能够流动和硬化的含纤维的合成树脂，其中在第一步骤中，使用的温度和压力足以引发合成树脂的流动，并施加直到合成树脂已经完成流动，所述 压力的值在所用的温度下超过泡沫体的抗压强度，但不超过其在室温下的抗压强度，其中在第二步骤中，在足以完成合成树脂硬化的温度和时间下，压力为 应用在所用温度下不超过泡沫的抗压强度。