Special receptacle or package – Infusion containing
Patent
1995-05-31
1997-03-25
Coan, James F.
Special receptacle or package
Infusion containing
53463, B65B 1150, B65B 2902
Patent
active
056136013
ABSTRACT:
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.
REFERENCES:
patent: 2531594 (1950-11-01), Abrahams
patent: 2655979 (1953-10-01), Eaton
patent: 2852795 (1958-09-01), Hermanson et al.
patent: 2925171 (1960-02-01), Eaton
patent: 2954294 (1960-09-01), Whelan
patent: 3384492 (1968-05-01), Spencer
patent: 4410441 (1983-10-01), Davies et al.
patent: 4876023 (1989-10-01), Dickenson et al.
Boulanger Roger
Metta Flavio
Barr James P.
Coan James F.
Johnson & Johnson Inc.
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