US 6,312,416 B1 · Thin sanitary napkin capable of controlled deformation when in use

Abstract

The present invention provides a sanitary napkin that is thin (less than 5 mm in thickness), highly absorbent and has a lateral flexibility allowing for controlled deformation when in use, namely the assumption of a “W” pattern (good for absorption performance) or a “M” pattern (which enhances comfort). This controlled deformation provides a good comfort potential and simultaneously reduces the likelihood of bunching due to compression forces exerted laterally against the napkin by the thighs of the wearer. In a specific example, the sanitary napkin is characterized by a lateral stiffness of not less than about 400 g and comprises a cover layer, a barrier layer and an second absorbent layer having at least one preferential bending zone which allows the napkin to adopt a certain three-dimensional deformation profile in response to lateral compression.

Claims19

Dependent claims

A sanitary napkin adapted to be worn in a crotch portion of an undergarment, said sanitary napkin comprising:

a) a fluid-pervious cover layer;
b) an absorbent system under said cover layer said absorbent system having a central width of at least 64 mm;
c) a liquid-impervious barrier layer under said absorbent system;
d) said sanitary napkin being characterised by a thickness less than about 5 mm;
e) said sanitary napkin being characterised by a flexural resistance of not less than about 400 g;
f) said sanitary napkin having a main body with a longitudinal axis and two opposite longitudinal side areas, said sanitary napkin including a preferential bending line extending obliquely in relation to said longitudinal axis on said main body, said preferential bending line extending from one longitudinal side area of the sanitary napkin to an opposite longitudinal side area, crossing the longitudinal axis of the sanitary napkin.

3 more elements

Dependencies are inferred from the claim text.

Thin sanitary napkin capable of controlled deformation when in use

Life of this patent

Thin sanitary napkin capable of controlled deformation when in use

Life of this patent

Abstract

Claims19