Embossed protective mark for core pipes
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- SONOCO DEVELOPMENT INC
- Filing Date
- 2022-12-09
- Publication Date
- 2026-06-10
AI Technical Summary
Existing core tubes for winding fabrics suffer from insufficient friction, leading to slippage during winding and unwinding, as embossments or perforations on the outer surface are diminished by contact with downstream surfaces, reducing their effectiveness in preventing slippage.
A core tube design featuring an inner tube with multiple layers and an outermost layer having helically wound raised gripping portions, protected by a radially extending protective strip that maintains the integrity of the embossments or perforations, preventing flattening and ensuring adequate grip during fabrication and material winding.
The protective strip preserves the effectiveness of the embossments or perforations, effectively preventing slippage of the fabric by maintaining their radial projection and grip strength, even when the tube is in contact with support surfaces.