WATER SOLUBLE PELLET AND METHOD FOR MANUFACTURING SAID WATER SOLUBLE PELLET

Abstract

A water soluble pellet for releasing one or more actives including a vegetable soap carrier in an amount of 10-95 wt %; a perfume oil in an amount of 2-12 wt %; and a dye in an amount of 0.001 to 0.5 wt %. The method for manufacturing the water soluble pellet includes the following steps: mixing the composition; extruding the composition; and cutting the extruded composition to form water soluble pellets.

Claims

1. A water soluble pellet that dissolves in water so as to release one or more actives from the pellet, said water soluble pellet comprising: a vegetable soap carrier in an amount of 10-95 wt %; a perfume oil in an amount of 2-12 wt %; at least one water soluble filler selected from the group consisting of sodium chloride, potassium chloride and calcium chloride, and at least one additive selected from the group consisting of natural cellulose fibers, microcrystalline cellulose, sodium carboxy methyl cellulose and hydroxypropyl cellulose.

2. The water soluble pellet according to claim 1, wherein the water soluble pellet further comprises a dye in an amount of 0.001 to 0.5 wt %.

3. The water soluble pellet according to claim 1, wherein the water soluble pellet further comprises perfume capsules in an amount of 0.5-12 wt %.

4. The water soluble pellet according to claim 1, wherein the water soluble pellet further comprises a water soluble polymer in an amount of 5-40 wt %.

5. The water soluble pellet according to claim 1, wherein said vegetable soap carrier comprises at least one of coconut, olive, rice and corn soaps.

6. The water soluble pellet according to claim 3, wherein said perfume capsules are formed from melamine formaldehyde.

7. The water soluble pellet according to claim 1, wherein the water soluble pellet has a weight of from 5 mg to 1 g.

8. The water soluble pellet according to claim 1, wherein the water soluble pellet is soluble in water at 30° C. under stirring conditions in less than 20 minutes.

9. The water soluble pellet according to claim 8, wherein the water soluble pellet is soluble in water at 30° C. under stirring conditions in less than 10 minutes.

10. The water soluble pellet according to claim 8, wherein the water soluble pellet is soluble in water at 30° C. under stirring conditions in less than 5 minutes.

11. The water soluble pellet according to claim 4, wherein the water soluble polymer is polyethylene glycol.

12. A method for manufacturing water soluble pellets according to claim 1, wherein the method comprises the following steps: mixing a composition according to claim 1; extruding said composition; and cutting said extruded composition to form the water soluble pellets.

Description

DESCRIPTION OF A PREFERRED EMBODIMENT

[0026] According to the invention, the pellet comprises a vegetable soap carrier (10 to 95 wt %) perfume oil (2 to 12 wt %), perfume capsules (0 to 12 wt %) and optionally a dye (0.001 to 0.5 wt %), and it is soluble in water at 30° C. under 500 rpm stirring simulating washing machine conditions in less than 20 minutes, preferably less than 10 minutes, and even more preferably less than 5 minutes.

[0027] A first example of the invention is:

[0028] Coconut soap beads: 92.95 wt %

[0029] Perfume oil: 5 wt %

[0030] Perfume capsules (made preferably from melamine formaldehyde shell): 2 wt %

[0031] Dye (such as bluemarine): 0.05 wt %

[0032] It must be pointed out that instead of coconut, rice, corn or olive can also be used, or any suitable vegetable soap.

[0033] The above materials are mixed together via an extruder and delivered in the form of solid pellets of mass 5 mg to 1 g each. It must be pointed out that the normal dose per wash in a washing machine would be between 10 grams and 25 grams formed by a plurality of pellets.

[0034] This material has been tested for water solubility according to the following protocol:

[0035] pour into a beaker about 50 ml of water;

[0036] warm up it until get 30° C.:

[0037] put about 250 mg of pellets into the beaker mixing continuously at 500 rpm via magnetic stirrer;

[0038] wait until all the pellet is dissolved.

[0039] We demonstrated this water soluble pellets dissolve completely in less than 5 minutes.

[0040] The use of the extruder allows to provide a shape to the final pellets in the form of stars, hearths, flowers or any other 2D object shape, which can be implemented to the nozzle of the extruder.

[0041] This allows to design the shape which best fit with the perfume fragrance and/or the brand/artwork design, making enjoyable the consumer experience.

[0042] Furthermore, the extrusion allows producing pellets with a skin/core structure, and surface hardness allows pellets to be extruded without sticking on themselves during their production and storage.

[0043] Additionally, some of the vegetable soap polymer should provide softness effect to fabrics but avoiding drawbacks of fabric usual softeners.

[0044] An alternative preferred composition of the pellets can be:

[0045] Coconut soap beads: 70 wt %

[0046] Palm soap: 20 wt %

[0047] Perfume oil: 7 wt %

[0048] Perfume capsules (made preferably from melamine formaldehyde shell): 2.95 wt %

[0049] Dye (pink from millkan): 0.05 wt %

[0050] The use of a second vegetable soap as palm soap or olive soap can help tailoring: 1) mechanical or surface properties of the final pellets, and/or 2) the solubility properties and/or improve the extrusion process.

[0051] A third preferred composition can be:

[0052] Coconut soap beads: 60 wt %

[0053] PEG 6000: 30 wt %

[0054] Perfume oil: 7 wt %

[0055] Perfume capsules (made preferably from melamine formaldehyde shell): 2-95 wt %

[0056] Dye (pink from millkan): 0.05 wt %

[0057] In the third alternative embodiment, the water soluble polymer is added to improve flowability during process (e.g. polyethylene glycol (PEG) 6000) (5 to 40 wt %).

[0058] PEG addition allows to improve mechanical properties, as well as to help better mixing of the fragrance in the material.

[0059] In the composition of the water soluble pellets according to the present invention, other fabric care active ingredient components can be added to be released through the wash together or alternatively to perfume providing consumer fabrics with additional benefits. These actives could be but not limited to stain removal ingredients, whitening agents as huying dyes and optical brighteners, lime removals additive, color care ingredients, softener agents, anti-wrinkles polymers, etc.

[0060] Additionally, the water soluble pellets made of vegetable soap could be used for release of actives in contact with water in other categories as for example in personal care (shampoo, conditioners, skin care, etc.).

[0061] Additionally, some other kind of additives could be added to the formulation. On one side, some additives can be added with the purpose to make the pellets less sticky and make the dosification by the user easier. For example, moisture absorbent additive such as Sodium sulfate or magnesium sulfate can be used.

[0062] Another kind of additive, still with the purpose to make the pellets less sticky are water soluble fillers such as sodium chloride or potassium chloride or calcium chloride.

[0063] Finally, additive to make dissolution during the washing cycle faster can be used, such as natural cellulose fibers, microcrystalline cellulose, or sodium carboxy methyl cellulose or hydroxypropyl cellulose.

[0064] An example of formulation with these kinds of additives is:

[0065] Coconut soap 48%

[0066] Sodium Sulfate 20%

[0067] Sodium Chloride 15%

[0068] Microcystalline cellulose 10%

[0069] Fragrance 4%

[0070] Microcapsules 3%

[0071] In addition to that, typical stabilizer/antioxidants additives can be added in order to stabilize the formulation and avoid its degradation with time.

[0072] Even though reference is made to a specific embodiment of the invention, it is clear for a person skilled in the art that the disclosed pellets and method are susceptible of variations and modifications, and that all the details cited can be substituted by other technically equivalent ones, without departing from the scope of protection defined by the attached claims.