| 摘要 |
<p>A generally tubular heat-shrinkable article is disclosed. This article comprises at least one heat-shrinkable band portion which has a closed cross-section and which comprises a heat-shrinkable interior wall portion composed of a cross-linked polymeric compsition, which composition comprises (a) a cross-linked crystalline olefin polymer having a gel fraction of at least 0.3, a density of at least 0.95 and a modulus at 175.degree.C of at least 40 psi, and (b) has an absorptivity such that said band portion, when exposed to radiation having a wavelength of 1.15 microns, transmits 5 to 50% of the radiation.</p> |
