Heat-recoverable article
    3.
    发明授权
    Heat-recoverable article 失效
    热回收制品

    公开(公告)号:US4569868A

    公开(公告)日:1986-02-11

    申请号:US71762

    申请日:1979-08-31

    摘要: Heat-recoverable articles, especially heat-shrinkable tubular articles, having an open end are formed so that the section adjacent said open end has a lower recovery ratio than a section adjacent thereto, thereby substantially reducing the risk of splitting when the degree of recovery is high or in applications where a high degree of unrecovered strain remains after recovery about a substrate such as a supply line. A preferred article is a tubular cap which has an open end section having a first expansion ratio, an intermediate section having a second expansion ratio and a closed end section having a third expansion ratio, the second expansion ratio being greater than the first and third expansion ratios. Such a cap may be employed to seal a conduit against ingress of moisture and other contaminants. When a supply line is subsequently to be passed through the conduit the closed end may be removed and the article shrunk to grip the supply line.

    摘要翻译: 形成具有开口端的热收缩性制品,特别是具有开口端的热收缩性管状制品,使得与所述开口端相邻的部分的回收率比与其相邻的部分具有较低的回收率,从而当恢复程度为 高或在诸如供应管线之类的基板上恢复之后保持高度未回复应变的应用中。 优选的制品是具有第一膨胀比的开口端部分,具有第二膨胀比的中间部分和具有第三膨胀比的封闭端部分的管状帽,第二膨胀比大于第一和第三膨胀 比率。 可以使用这种盖子来密封导管以防止湿气和其它污染物的进入。 当供应管线随后通过导管时,封闭端可以被移除并且物品收缩以夹紧供应管线。

    Thermochromic composition
    4.
    发明授权
    Thermochromic composition 失效
    热变色组合物

    公开(公告)号:US4344909A

    公开(公告)日:1982-08-17

    申请号:US105587

    申请日:1979-12-20

    摘要: Heat-recoverable articles carrying a "thermochromic" composition comprising organic materials which melt and decompose to provide a color-change indicating that the articles have been heated to a certain temperature, e.g. to melt a sealant carried on the surface of the article which is to contact a substrate around which the article is to be shrunk. Mixtures of relatively simple compounds may be used to graduate the color change, and means are described for preventing reversion to the original color on long-term exposure to moisture.

    摘要翻译: 携带“热变色”组合物的热可回收制品,其包含熔融和分解以提供颜色变化的有机材料,其指示制品已被加热到一定温度,例如, 使在物品表面上承载的密封剂熔化,该密封剂将与物品要被收缩的基底接触。 可以使用相对简单的化合物的混合物来调整颜色变化,并且描述了用于在长期暴露于水分时防止回复到原始颜色的手段。