- 专利标题: Convolute cardboard tube, apparatus and method for manufacturing the same
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申请号: US17743974申请日: 2022-05-13
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公开(公告)号: US12071317B2公开(公告)日: 2024-08-27
- 发明人: Pierre-Michel D'Anglade
- 申请人: ABZAC CANADA INC.
- 申请人地址: CA Drummondville
- 专利权人: ABZAC CANADA INC.
- 当前专利权人: ABZAC CANADA INC.
- 当前专利权人地址: CA Drummondville
- 代理机构: Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
- 主分类号: B65H18/28
- IPC分类号: B65H18/28 ; B31C1/00 ; B31C1/04 ; B31C1/08 ; B31C11/00 ; B31C11/04 ; B31C11/06 ; B65H18/00 ; B65H75/10
摘要:
A plastic film roll includes: a convolute cardboard tube including a tubular body having a tubular body wall formed by a plurality of layers of a straight rolled cardboard sheet having a weight equal to or less than 300 gsm; a plastic film wound about the convolute cardboard tube to form a plurality of plastic film windings around the convolute cardboard tube, the plastic film windings creating a radial compression force equal to or greater than 10 bar on the tubular body wall, wherein the cardboard sheet includes a plurality of fibers, at least a majority of the fibers being substantially aligned in a tangential direction relative to the tubular body to allow the convolute cardboard tube to resist the radial compression force.
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