B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 81/34 (2006.01) B29C 65/02 (2006.01) B29C 65/08 (2006.01) B29C 65/18 (2006.01) B65B 51/16 (2006.01) B65D 81/00 (2006.01) D06F 58/20 (2006.01) B65D 75/30 (2006.01)
Patent
CA 2132786
ABSTRACT OF THE DISCLOSURE A package for dispensing a substance that imparts a desirable property to a body of water. The dispensing package comprises a water permeable bag of non-woven fabric enclosing a predetermined quantity of particulated product, such as tea or coffee that releases a flavouring substance in steeping liquid. The non-woven fabric has a thermally activated bonding surface permitting to permanently close the bag by peripherally heat-sealing the bag walls to one another. The heat-sealing operation is performed by driving in the wall portions to be joined a multitude of heated projections that rapidly transfer heat to the thermally activated bonding layers in order to quickly effect the seal. The resulting joint area displays a plurality of perforations formed by the heated projections. The invention also extends to a method and apparatus for heat-sealing the dispensing package.
Boulanger Roger
Metta Flavio
Johnson & Johnson Inc.
Smart & Biggar
LandOfFree
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