| abstract |
A crosslinked tube and heat-shrinkable tube, which each comprises an ionomer resin composition layer, the ionomer resin composition layer comprising (a) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with potassium ions and (b) an ionomer resin having a structure in which a copolymer of ethylene and acrylic or methacrylic acid has been intermolecularly crosslinked with sodium ions or/and zinc ions, the proportion of the ionomer resin (a) to the ionomer resin (b) being from 100/0 to 50/50 by weight. A heat-shrinkable tube, which comprises the ionomer resin composition layer having on the inner surface thereof an adhesive layer. |