Invention Grant
US09284147B2 Method and apparatus for producing coreless rolls of paper 有权
用于生产无芯卷纸的方法和设备

Method and apparatus for producing coreless rolls of paper
Abstract:
The mandrel is formed from flexible and elastic material, and after the roll is wound, the mandrel is pulled longitudinally and withdrawn from the roll of paper to form a coreless roll.
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