| 摘要 |
<p>An elongated wrapper which is initially flexible and which, when wrapped around one or more bodies, is adapted to be stretched and assume a substantially rigid condition. The wrapper has an outer, elongated, tubular, elastic envelope assembly which is of a generally flat cross section and which is adapted to surround one or more bodies while being longitudinally stretched and wrapped around the bodies. This envelope assembly has an inner surface carrying one of a pair of materials which, when they combine, react to assume a hardened condition. The other of these materials is situated in the interior of the envelope assembly and is separated from the one of the pair of materials by a separating layer structure which is located in the envelope assembly between the pair of materials separating them from each other to prevent them from combining. This separating layer assembly has the property of responding to the longitudinal stretching of the envelope assembly when the latter is wrapped around one or more bodies to assume a non-separating condition placing the materials in contact with each other so that they will then combine to assume the hardened condition.</p> |
