Improvements in or relating to beverage capsules

• Main Authors: Benedict William Flynn Taylor, Sinem Gkioulen, Geoff York, Christopher John Jones, Matthew Edwards
• Format: Patent
• Language: English
• Published: 05.04.2023
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPARATUS FOR MAKING BEVERAGES; COFFEE MILLS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HANDLING THIN OR FILAMENTARY MATERIAL; HUMAN NECESSITIES; KITCHEN EQUIPMENT; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPICE MILLS; STORING; SUCTION CLEANERS IN GENERAL; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Welding 141 a thermoplastic lid 110 to a peripheral flange 105 of a thermoplastic capsule containing an ingredient; and using the heat and pressure of the welding head to form a recess 145 in the flange into which the lid seals. Ideally the recess is an annular groove on a circular flange. The heat can be 200-250 degrees Celsius applied for 0.3-1.5 seconds. The flange and lid can have unsealed tabs to allow peeling. The channel can be generally circular with a deviation at the tab to focus peeling so that only 20-50N are required. The capsule can also have an annular wall 112 defining a manifold chamber and a central tubular wall defining an outlet. The lid can be concentrically sealed to both of these. The sealing head can include an annular projection to form the channel.