Detergent cartridge with seal, and dispensing system
The conical seal design for detergent cartridges addresses the issue of uncontrollable membrane tearing by enabling controlled puncturing and secure sealing, improving manufacturing ease and operational reliability.
WO2026131017A1PCT designated stage Publication Date: 2026-06-25HENKEL KGAA
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HENKEL KGAA
- Filing Date
- 2025-11-26
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Existing detergent cartridges for washing machines suffer from uncontrollable membrane tearing during the piercing process, leading to leakage and air ingress, which compromises the seal's dynamic tightness and complicates manufacturing.
Method used
A conical seal design with a shaft and flange, allowing separate assembly after filling, featuring a puncture zone and elastic deformation for controlled puncturing, ensuring secure sealing and easy insertion into the base plate.
Benefits of technology
The conical seal design provides reliable sealing during operation, preventing leakage and air ingress, simplifies manufacturing, and ensures easy assembly with the dosing system, enhancing the reliability and efficiency of detergent dispensing.
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Smart Images
Figure EP2025084262_25062026_PF_FP_ABST
Abstract
The invention relates to a detergent cartridge (26) comprising at least one chamber (27) for storing a preparation, comprising a base plate (34), which is adjacent to the chamber (27), and comprising a seal (29), which is arranged in an opening in the base plate (34) and has a piercing zone (46), wherein the piercing zone (46) is designed so that, when the detergent cartridge (26) is coupled for the first time to a dispensing device (25), it is pierced in an axial direction by a dispensing lance (28) of the dispensing device (25), characterized in that the seal (29) has a cone body (37) with a base (39) and a tip (38), and also has a flange (41) and a shank (40), which connects the base (39) of the cone body (37) to the flange (41), wherein radially in relation to the shank (40) the flange (41) has a first projection (43) and the base (39) of the cone body (37) has a second projection (45); and the tip (38) of the cone body (37) does not protrude. The invention also relates to a dispensing system having such a detergent cartridge (36).
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