Water-soluble pouches

A system for producing a water-soluble pouch comprising:

• a first pouch-filling line;
• a second pouch-filling line parallel to and directly adjacent to the first pouch-filling line;
• a first film-feeding device;
• and
• a conveyor receiving a first water-soluble film fed from the first film-feeding device and configured to convey the first water-soluble film along a first direction,
• wherein the first and second pouch-filling lines extend along the first direction and comprise respective first and second cavity-forming devices configured to respectively form a first and a second cavity in the first water-soluble film, wherein the first cavity-forming device is separated from the second cavity-forming device at least by a minimum distance along a second direction, wherein the second direction is substantially perpendicular to the first direction, and
• wherein the second cavity has a second maximum width along the second direction and the ratio of the second maximum width over the sum of the minimum distance and the second maximum width is less than 80%.

A method of transforming a first system for producing a water-soluble pouch into a second system for producing a water-soluble pouch;

• wherein the first system comprises:
• a first pouch-filling line extending in a first direction and comprising a first cavity-forming device for forming a first cavity in a water-soluble film, the first cavity having a first surface area;
• and
• a second pouch-filling line directly adjacent to the first pouch-filling line extending in the first direction and comprising a second cavity-forming device for forming a second cavity in the water-soluble film, the second cavity having a second surface area,
• wherein the second surface area is substantially equal to the first surface area, the method comprising:
• adapting the second cavity-forming device such that the second surface area is comprised between 10 and 90% of the first surface area and such that a minimum distance between a resulting first cavity and a resulting second cavity along a second direction substantially perpendicular to the first direction is increased,
• wherein the first surface area and the second surface area are defined along the surface of the water-soluble film within the respective cavity.

A water-soluble pouch comprising:

• a first cavity formed in a first water-soluble film;
• a second cavity formed in the first water-soluble film;
• a second water-soluble film sealing the first and the second cavities;
• and
• a linking portion formed at least from a portion of the first and of the second water-soluble films separating the first cavity from the second cavity,
• wherein the second cavity has an elongated aspect ratio along a first direction that is substantially perpendicular to a second direction,
• wherein the first cavity, the second cavity and the linking portion are aligned along the second direction,
• wherein a distance measured along the second direction between any point comprised in the first cavity and any point comprised in the second cavity is at least 0.5 cm, and
• wherein the second water-soluble film has a substantially planar structure.