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    • 3. 发明授权
    • Method of producing a foam-insulated electric wire using a blowing agent
mixture
    • 使用发泡剂混合物制造泡沫绝缘电线的方法
    • US5391335A
    • 1995-02-21
    • US86505
    • 1993-07-01
    • Kazuhide SakamotoMasanobu Sugimura
    • Kazuhide SakamotoMasanobu Sugimura
    • B29C44/32C08J9/14H01B3/44H01B13/14B29C67/22
    • C08J9/14B29C44/322H01B13/142H01B3/441B29K2023/00B29L2031/3462C08J2323/02Y10S264/05
    • In producing a foam insulated electric wire having an insulating layer made of a polyolefin foam, a foaming agent is employed, which is a liquid mixture of at least two kinds of compounds selected from the group consisting of ethers, esters, ketones and saturated hydrocarbons having boiling points of 100.degree. C. or below, or a liquid mixture of at least one kind of compound selected from the group consisting of ethers, esters, ketones and saturated hydrocarbons having boiling points of 100.degree. C. or below and at least one kind of liquid compound selected from the group consisting of ethers, esters, ketones, saturated hydrocarbons and alcohols having boiling points higher than 100.degree. C. but not exceeding 150.degree. C. Thus, a foam insulating layer having a high cell content and a low deformation ratio become available. Since the foam insulating layer has a high cell content and a low deformation ratio, the foam insulating layer, if reduced in diameter, is hardly squeezed. Since the foaming agent is a liquid, it can be supplied in an exact amount. The obtained wire is useful as a core applied to a high-speed signal transmission cable, an under-carpet cable, etc.
    • 在制造具有由聚烯烃泡沫制成的绝缘层的泡沫绝缘电线时,使用发泡剂,其是选自醚,酯,酮和饱和烃中的至少两种化合物的液体混合物,其具有 沸点为100℃以下的沸点或至少一种选自醚,酯,酮和沸点为100℃以下的饱和烃的化合物的液体混合物,以及至少一种 选自醚,酯,酮,饱和烃和沸点高于100℃但不超过150℃的醇的液体化合物。因此,具有高细胞含量和低变形的泡沫绝缘层 比例变得可用。 由于泡沫绝缘层具有高的电池含量和低变形率,所以泡沫绝缘层如果直径减小,几乎不被挤压。 由于发泡剂是液体,因此可以精确地供给。 所获得的导线可用作应用于高速信号传输电缆,地毯下电缆等的核心。