EP4501156A1 — Cartridge loading method

USPTO Abstract

A method for assembling a cartridge is provided. The method for assembling the cartridge includes the following. Multiple outer tubes (10) are provided, where each of the multiple outer tubes (10) has a sealing portion (20) at a first end (11) of a corresponding outer tube (10). Tobacco (30) is loaded from a second end (12) of the outer tube (10), where the second end (12) is opposite to the first end (11). A closed end (41) of a cooling tube (40) is identified, and the cooling tube (40) is mounted into the outer tube (10) from the second end (12) to make the closed end (41) adjacent to the tobacco (30), where the cooling tube (40) has the closed end (41) and an open end (42) opposite to the closed end (41). A filter member (50) is mounted into the outer tube (10) from the second end (12) to make the filter member (50) adjacent to the cooling tube (40). A heat-not-burn (HNB) cartridge prepared by the method for assembling the cartridge is of high quality.