Package seal for individually packaged sanitary napkins

Details Package seal for individually packaged sanitary napkins Package seal for individually packaged sanitary napkins

1994-02-14

1995-10-31

Ackun, Jacob K.

Special receptacle or package

For body treatment article or material

Bandage, drape or dressing

206494, 229 8705, A61F 1320

Patent

active

054621666

ABSTRACT:
The present invention provides a sanitary napkin enclosed within a flexible wrapper formed of thermoplastic film. The sanitary napkin and wrapper are folded as a unit about at least two lateral fold axes, so that the sanitary napkin is disposed between two or more layers of the wrapper. The layers of the folded wrapper are joined by a pair of laterally spaced apart releasable seals. Each releasable seal extends longitudinally along a longitudinal edge of the wrapper. Each releasable seal comprises an array of discrete thermal-mechanical bonds joining the layers of the wrapper. The array of discrete bonds extends in a first direction generally parallel to a package edge and in a second direction generally perpendicular to the package edge. This arrangement of ratios of bond width to bond spacing reduces the strength of the seal parallel to the package edge relative to the strength of the seal perpendicular to the package edge. The seal arrangement thereby enhances the ability of the seal to resist bursting in a direction perpendicular to the package edge, while permitting the package edge to be peeled apart in a direction generally parallel to the package edge.

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Report titled "Preliminary Report on the Effect of Shapes and Patterns on the Strength Characteristics of Bonded Laminar Sheets," prepared by Frederick Chen (as supervised by Dr. Max Brown, University of Cincinnati) Mar. 24, 1988.

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