FLEXIBLE BAGS HAVING ENHANCED CAPACITY AND ENHANCED STABILITY IN USE

The present invention provides a flexible bag (10) comprising at least one sheet of flexible sheet material (52) assembled to form a semi-enclosed container (10) having an opening defined by a periphery (28). The opening defines an opening plane, and the bag (10) has an upper region (31) adjacent to the opening and a lower region (32) below the upper region. The upper region (31) has a preferential elongation axis perpendicular to the opening plane which permits the upper region (31) to expand in response to an externally-applied force upon the bag (10), while the lower region (32) has a preferential elongation axis parallel to the opening plane which permits the lower region (32) to expand in response to forces exerted by contents within the bag (10) to provide an increase in volume of said bag (10). The bag (10) therefore exhibits increased stability in use and is easier to close. The present invention provides a flexible bag comprising at least one sheet of flexible sheet material assembled to form a semi-enclosed container having an opening defined by a periphery. The opening defines an opening plane, and the bag has an upper region adjacent to the opening and a lower region below the upper region. The upper region has a preferential elongation axis perpendicular to the opening plane which permits the upper region to expand in response to an externally-applied force upon the bag, while the lower region has a preferential elongation axis parallel to the opening plane which permits the lower region to expand in response to forces exerted by contents within the bag to provide an increase in volume of said bag. The bag therefore exhibits increased stability in use and is easier to close. L'invention concerne un sachet flexible comprenant au moins une feuille de matériau flexible assemblée de manière à former un réceptacle semi-fermé comprenant une ouverture délimitée par une périphérie. Cette ouverture définit un plan d'ouverture et le sachet comprend une région supérieure adjacente à cette ouverture et une région inférieure située sous cette région supérieure. La région supérieure comprend un axe d'élongation préférentiel perpendiculaire au plan d'ouverture, permettant à la région supérieure de se dilater en réponse à une force appliquée à l'intérieur du sachet, tandis que la région inférieure présente axe d'élongation préférentiel parallèle au plan d'ouverture permettant à cette région inférieure de se dilater en réponse aux forces exercées par le conten