SPIRAL WINDING OF PAPER CORE
Patent Information
- Application Number
- DE602020048313
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-07-05
- Filing Date
- 2020-07-03
- Publication Date
- 2025-03-26
- Estimated Expiration
- 2040-07-03
AI Technical Summary
The paper industry faces challenges in manufacturing, storage, and logistics due to the need for transporting pre-made paper cores, which are costly and inefficient, and existing winding methods like spiral and convolute winding have limitations in producing cores of varying dimensions and strength.
A method and apparatus for convolutely winding paper sheets into cores by cutting the paper web perpendicular to the winding direction, allowing for easy adjustment of core width and thickness, using complementary or mirror-symmetrical grinded edges for uniform thickness and high adhesion, and applying adhesive for enhanced bonding.
This approach enables efficient on-site production of strong paper cores with uniform thickness and varying widths, reducing logistical costs and waste, and allows for continuous feeding without overlaps, resulting in a more material-efficient and radially uniform core.