Device and method for preparing fully granular cigarette/filter rod, and prepared fully granular cigarette/filter rod
US11918034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2019 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Apr 2, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/0287
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A device and method for preparing a fully granular cigarette/filter rod, and a prepared fully granular cigarette/filter rod are disclosed. In certain embodiments, negative pressure is used to adhere granular material onto a mesh-type conveyor belt. The granular material is preliminarily formed into fully granular cigarette/filter rod material by means of a pre-forming apparatus; the fully granular cigarette/filter rod material, traveling with the mesh-type conveyor belt, enters into a forming cavity, and undergoes heating and humidifying treatment, and a continuous solid porous substance is formed; the continuous solid porous substance is moved into the cooling/drying cavity, drying and cooling treatment are performed under the action of negative pressure, and a fully granular cigarette/filter rod with strong adhesion, porosity, permeability, and appropriate moisture is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.