Packaging system for producing pouches comprising a water-soluble foil and a powder
View Patent ↗Packaging system ( 1 ) for producing pouches comprising a water-soluble foil ( 3 ) and a powder, wherein the packaging system comprises multiple moulds ( 5 ) and a mould conveyor ( 8 ), wherein the moulds ( 5 ) are moved along a foil supplying device ( 50 ), a compartment forming device ( 12 ), a powder filling device ( 13 ), and wherein the powder filling device ( 13 ) comprises a powder supply ( 14 ) and a powder distribution unit ( 15 ).
1 . The packaging system for producing pouches comprising a water-soluble foil and a powder, the packaging system comprising:
multiple moulds, each mould having a mould cavity for forming a compartment in the foil, and
a mould conveyor configured to move the moulds in a conveying direction along a mould trajectory, such as an endless mould trajectory, and wherein the moulds are moved along:
a foil supplying device configured to position the foil on the moulds,
a compartment forming device configured to position parts of the foil in the mould cavities to form the compartments in the foil,
a powder filling device comprising multiple powder dispensers configured to fill the compartments with the powder, and wherein
the powder filling device comprises a powder supply for supplying the powder to a powder distribution unit which distributes the powder over multiple powder channels which are in fluid communication with the powder dispensers,
the powder distribution unit comprises a powder distributor comprising a distributor discharging opening which is positioned along a distribution path,
each powder channel comprises a channel receiving opening,
the channel receiving openings are positioned along the distribution path and directed towards the distributor discharging opening to receive powder discharged from the distributor discharging opening, and
the packaging system comprises a distribution drive configured to move the distributor discharging opening and the channel receiving openings relative to each other with a cyclical movement along the distribution path to supply powder from the powder distributor to the powder channels such that the distributor discharging opening passes each of the channel receiving openings at a constant speed during said cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other.
2 . The packaging system according to claim 1 , wherein the distributor discharging opening and the channel receiving openings are configured to overlap along an associated first overlap line extending in a first direction perpendicular to the distribution path in a same manner for each channel receiving opening during said cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other.
3 . The packaging system according to claim 2 , wherein each first overlap line has a same first overlap length.
4 . The packaging system according to claim 2 , wherein said first overlap line for each channel receiving opening has a same first overlap position in the first direction with respect to the distribution path.
5 . The packaging system according to claim 2 , wherein said overlapping along the associated first overlap line for each channel receiving opening is determined in a first situation of maximum overlap along the first overlap line between the distributor discharging opening and the respective channel receiving opening, wherein the first overlap line has a maximum first overlap length in said first situation.
6 . The packaging system according to claim 1 , wherein the distributor discharging opening and each of the channel receiving openings are configured to overlap along an associated second overlap line extending in a second direction along the distribution path in a same manner for each channel receiving opening during said cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other.
7 . The packaging system according to claim 6 , wherein each second overlap line has a same second overlap length.
8 . The packaging system according to claim 6 , wherein said overlapping in the second direction for each channel receiving opening is determined in a second situation of maximum overlap along the second overlap line between the distributor discharging opening and the respective channel receiving opening, wherein the second overlap line has a maximum second overlap length in said second situation.
9 . The packaging system according to claim 6 , wherein each channel receiving opening extends over a channel width in the second direction and the channel widths of all the channel receiving openings are equal to each other.
10 . The packaging system according to claim 1 , wherein the distribution drive is configured to move the distributor discharging opening and the channel receiving openings relative to each other at a constant speed.
11 . The packaging system according to claim 1 , wherein:
the distribution drive is configured to move the powder distributor in order to create said cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other, or
the distribution drive is configured to move the powder channels in order to create said cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other, or
the distribution drive is configured to move the powder distributor and the powder channels in order to create said cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other.
12 . The packaging system according to claim 1 , wherein the distribution path is a closed path, such as a circular path, and wherein optionally the cyclical movement is a cyclical continuous movement or a cyclical back and forth movement.
13 . The packaging system according to claim 1 , wherein the distribution path is an open-ended path, such as a straight path, and wherein optionally the cyclical movement is a cyclical back and forth movement.
14 . The packaging system according to claim 13 , wherein the distribution path extends between a first end position and a second end position, wherein the distributor discharging opening is free from fluid communication with any of the channel receiving openings when the distributor discharging opening is positioned at the first end position and/or the second end position.
15 . The packaging system according to claim 1 , wherein the distribution path comprises at least one parking section which is free from channel receiving openings to allow parking of the powder distributor without discharging powder in any of the channel receiving openings.
16 . The packaging system according to claim 1 , the powder distributor supplies powder to all the powder channels during the cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other.
17 . The packaging system according to claim 1 , the powder distributor supplies powder to each of the powder channels during the cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other.
18 . The packaging system according to claim 1 , wherein each powder channel is in fluid communication with only one powder dispenser and each powder dispenser is in fluid communication with only one of the powder channels.
19 . The packaging system according to claim 1 , wherein the packaging system comprises a further foil supplying device configured to position a water-soluble further foil on the foil and over the powder in the compartments in order to form a web of pouches holding the powder between the foil and the further foil.
20 . A method for producing pouches comprising a water-soluble foil and powder with the packaging system according to claim 1 , said method comprising moving the distributor discharging opening of the powder distributor and the channel receiving openings of the powder channels relative to each other with a cyclical movement along the distribution path to supply powder from the powder distributor to the powder channels, wherein:
the distributor discharging opening passes each of the channel receiving openings at a constant speed during said cyclical movement of the distributor discharging opening and the channel receiving openings relative to each other, and
the powder distributor supplies powder to each of the powder channels during said cyclical movement of the distributor discharging opening and the channel receiving openings.