| 摘要 |
A method of making a spiral-wound tube, a tube made by such a method, and an outer layer used in such a tube includes structure and steps for bonding a regenerated cellulose web to an outer surface of a spiral-wound substrate. Preferably, the regenerated cellulose comprises a laminate of reverse-printed PVDC-cellophane bonded to a protective layer such as paper. The regenerate cellulose outer web has high strength, is substantially impermeable to liquid and air, has a low coefficient of friction, and is biodegradable. By reverse printing the regenerated cellulose web, printing inks are not smudged or transferred to other surfaces, thus providing an appealing and usable product.
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