Invention Grant
US08097312B2 Paper roll with pre-cut windows 有权
纸卷带预切窗

Paper roll with pre-cut windows
Abstract:
A web of fibrous material having windows covered by a transparent material, and which is modified by compression, shaving, or embossing, so as to maintain a substantially uniform thickness throughout the length of the web. When the web is then wound onto itself, the resulting roll will have a substantially circular cross-section.
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