E TUB) METHOD OF CONTINUOUSLY POPURING SPECIALLY FORMED SHRINKABL
Continuously extruded thermoplastic tube was intermittently sealed by passing 2 rollers with finlike embossings and blown in an expansion control tube to give heat- shrinkable tubes. A heat-shrinkable polyethylene and PVC tubes with partial longitudinal seals, useful for fitting lead wires to light...
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| Sprache: | eng |
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| Zusammenfassung: | Continuously extruded thermoplastic tube was intermittently sealed by passing 2 rollers with finlike embossings and blown in an expansion control tube to give heat- shrinkable tubes. A heat-shrinkable polyethylene and PVC tubes with partial longitudinal seals, useful for fitting lead wires to light bulb were prepd. 2 lead wires passed through 2 holes formed by the seal and the unsealed portion was fitted to the bulb. |
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