Beverage packages

• US 4,818,544 A
• Filed: 05/26/1987
• Issued: 04/04/1989
• Est. Priority Date: 05/27/1986
• Status: Expired due to Term

• Current Assignee: Mars Limited (GREE Inc.)
• Original Assignee: Mars Limited (GREE Inc.)
• Inventors: Seward, Barry
• Primary Examiner(s): WEINSTEIN, STEVEN L
• Application Number:
  US07/054,301
• Time in Patent Office: 679 Days
• Field of Search: 426/77-84, 426/112, 426/115, 426/113, 426/394, 426/433, 426/124, 99/295, 99/296, 99/287, 99/289 R, 99/289 T, 99/316, 99/317, 99/323, 99/319, 99/321, 99/281, 99/302 R, 222/129.1, 222/541, 206/5, 383/80, 383/21, 383/93, 383/94, 383/904, 383/102, 383/103, 383/119, 383/104, 210/282, 210/484
• US Class Current: 426/77
• CPC Class Codes: B65D 85/8043 Packages adapted to allow liquid to pass through the contents B65D85/808 takes precedence; filters or reusable cartridges for coffee or tea makers, not used as packages A47J31/06
• CPC Class Codes: Y10S 383/904 Filling tube

Abstract

A beverage sachet has improved base seam opening performance by the provision of sealed lands extending inwardly from the side seams to reduce the tendency of curling of the base seams in use.

Claims

1. A generally planar sealed beverage sachet formed of a substantially air- and water-impermeable flexible sheet material, said sheet material enclosing and being attached to a web of water permeable material which supports a product which provides a beverage when mixed with an aqueous medium, the sachet being provided with a locating means at one end thereof for an aqueous medium introducing means, a frangible base seam comprising a pressure- or heat-sensitive seal at the opposite end, and a pair of side seams each of which includes, adjacent the base seam, a sealed land, said lands extending inwardly towards one another across the generally planar surface of the sachet, said lands being configured and oriented within said sachet sufficient to reduce upward curling of the base seam when aqueous medium is introduced and said base seam opens when said sachet is used.

2. A sachet according to claim 1 wherein the side seams taper inwardly towards the base seam of the sachet, each land being disposed at the top of the taper and extending inwardly to approximately the same extent as the taper.

3. A sachet according to claims 1 or 2 wherein the locating means comprises a plastic nozzle attached to the sachet.

4. A sachet according to claims 1 or 2 wherein the product is ground coffee or leaf tea and the web material forms a filter therefor.