A process for making water-soluble pouches having at least one compartment on a sealing plane is disclosed. The process is characterized by the difference in the first water-soluble film heating temperature and the second water-soluble film heating temperature being reduced substantially. The resulting water-soluble pouch comprises of almost symmetrically shaped individual compartments relative to the sealing plane respectively and optionally with different depth of each compartment enabling stereoscopic and contemporary appearance to the consumer.

A gelatin-containing water-soluble film having excellent water solubility, excellent mechanical properties such as film strength and elongation, and excellent sealability is provided as follows. The water-soluble film contains gelatin and a polyvinyl alcohol resin (A). The polyvinyl alcohol resin (A) contains a modified polyvinyl alcohol resin.

The present invention provides a method of producing a unit dose capsule for treatment of a substrate comprising the steps of a. placing a first sheet of water-soluble polyvinyl alcohol film over a mould having sets of cavities, each set comprising three cavities arranged on the sealing plane one after the other in circumferential direction such that footprint area of the second and the third compartments is from 0.8 to 2.5 times the area of the footprint of the first compartment; b. heating and applying vacuum to the film to mould the film into the cavities and hold it in place to form three recesses in the film; a first recess, the second recess, and a third recess, the three recesses being connected to respective side recesses by the film; c. filling three different parts of a substrate treatment composition into the three recesses, the three parts together forming a full substrate treatment composition; d. sealing a second sheet of film to the first sheet of film across the formed recesses to form the sealing web comprising a peripheral sealing skirt and inter-compartment sealing webs; and e. cutting between the capsules so that a series of three compartment capsules are formed, each capsule containing a part of a substrate treatment composition in three compartments.

The present invention provides a method of producing a unit dose capsule for treatment of a substrate, the method comprising steps: a. placing a first sheet of water-soluble polyvinyl alcohol film over a mould having sets of cavities, each set comprising three cavities arranged on the sealing plane one after the other in circumferential direction; b. heating and applying vacuum to the film to mould the film into the cavities and hold it in place to form three recesses in the film; a first recess (502), the second recess (503), and a third recess (504), the three recesses being connected to respective side recesses by the film; c. filling three different parts of a substrate treatment composition into the three recesses (502, 503, 504), the three parts together forming a full substrate treatment composition; d. sealing a second sheet of film to the first sheet of film across the formed recesses to form the sealing web comprising a peripheral sealing skirt (108) and inter-compartment sealing webs (1024, 1023, 1034) having average sealing width in the range of 0.3 to 3 mm between compartments and a central sealing web (10234) thereby separating the compartments (102, 103, 104) from one another to produce a three compartment capsule (101); and e. cutting between the capsules so that a series of three compartment capsules (101) are formed, each capsule containing a part of a substrate treatment composition in three compartments (102, 103, 104).

Water-soluble film and unit dose article made therefrom, wherein the water-soluble film comprises a water-soluble polymer, wherein the water-soluble polymer comprises a blend of: i) pectin; and ii) polyvinyl alcohol; and wherein the pectin and the polyvinyl alcohol polymer are in a weight ratio of from 1:9 to less than 1:1.

Glycerin and sodium polyacrylate may be mixed at a first mixing speed for a first mixing time. Free water and a fibrillated cellulose mixture may be added to second mixer and mixed at a second mixing time speed for a second mixing time. The glycerin and the sodium polyacrylate may be mixed with the free water and fibrillated cellulose mixture at a third mixing speed for a third mixing time. One or more of sodium citrate, sodium bicarbonate, and sodium benzoate may be added and mixed at a fourth mixing speed for a fourth mixing time. Sodium carbonate may be added and mixed at a fifth mixing speed for a fifth mixing time. A surfactant mixture and optionally fragrances may be added and mixed at a sixth mixing speed for a sixth mixing time to form a final mixture, which may be transferred to molds, dehydrated, and removed.

A water dispersible sulfopolymer for use as a material in the layer-wise additive manufacture of a 3D part made of a non water dispersible polymer wherein the water dispersible polymer is a reaction product of a metal sulfo monomer, the water dispersible sulfo-polymer being dispersible in water resulting in separation of the water dispersible polymer from the 3D part made of the non water dispersible polymer.