Conical body and device for shaping a planar material in the form of a hollow frustoconical tube for a smoking article
The conical body with separate vacuum and blower apertures ensures uniform pressure application, addressing assembly complexity and material deformation issues, enabling reliable production of smoking article tubes.
WO2026145888A1PCT designated stage Publication Date: 2026-07-09GVF MACHINES AG
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GVF MACHINES AG
- Filing Date
- 2025-11-11
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing devices for shaping planar material into hollow frustoconical tubes for smoking articles are complex to assemble, prone to loosening of flow lines, and can cause deformation or tearing of the material during the manufacturing process.
Method used
A conical body with distinct first and second apertures for vacuum and blower connections, respectively, allows uniform application of negative and positive pressures to secure and eject the planar material without deformation, featuring a simplified assembly and improved material handling.
Benefits of technology
Ensures reliable production of tubes with secure junctions, allowing further processing steps like adding filters and filling with substances, while maintaining material integrity and hygiene.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure EP2025082618_09072026_PF_FP_ABST
Abstract
The invention relates to a conical body (10) for shaping a planar material in the form of a hollow frustoconical tube for a smoking article. The conical body comprises first apertures (40) on the outer surface in fluid communication with a vacuum source (42) to secure a contact region (44) of the planar material when a negative pressure is applied, and second apertures (50) in fluid communication with a blower (52) to eject the tube from the conical body when a burst of air is applied. The conical body comprises a first and a second cavity (60, 62) connected to the vacuum source (42) and to the blower (52), respectively. The first apertures are arranged in two rows circumferentially spaced apart from each other extending along the conical body axis to form a receiving region between the two rows to secure the contact region along the two rows.
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