Process for preparing perfume film chips
View Patent ↗A process for preparing perfume film chips comprising inclusions of perfume particles.
1. A process for preparing perfume film chips comprising inclusions of perfume particles wherein process comprises the steps of
a) forming a film of water reactive material containing inclusions of perfume particles;
b) solidifying said film by cooling and/or drying and
c) comminuting the solidified film into perfume film chips comprising inclusions of perfume particles wherein said particles comprise particle carrier material and perfume loaded into said carrier material.
2. A process according to claim 1 wherein, the film containing inclusions of perfume particles is solidified to an average film thickness of less than 4 mm.
3. A process according to claim 1 whereby after communition step c) the diameter of the inclusions is less than the diameter of the perfume film chip.
4. A process according to claim 1 whereby the perfume film chip comprises, in addition to the inclusions of perfume particles, more than 5% (vol/vol) of gas-inclusions by volume of the perfume film chip.
5. A process according to claim 1 whereby the film is formed by aqueous casting on a rotating drum or a moving belt in step a).
6. A process according to claim 1 whereby the film comprising inclusions of perfume particles has a brittleness degree of less than 100%.
7. A process according to claim 1 whereby the amount of perfume particles in the perfume film chips is from 0.1 to 80 wt. % by weight of the final perfume film chip composition.
8. A process according to claim 1 wherein the perfume film chips comprise from about 1 wt. % to about 95 wt. % of the water reactive material by weight of the total perfume chip composition.
9. A process according to claim 1 wherein said water reactive material of said film comprises polymers, copolymers or derivatives thereof selected from polyvinyl alcohols, polyvinyl pyrrolidone, polyalkylene oxides, cellulose, cellulose ethers, polyvinyl acetates and acetals, polycarboxylic acids and salts, proteins, polyamides, polyacrylates, polymethacrylates, polysaccharides, resins, gums, carbohydrate material and mixtures thereof.
10. A process according to claim 1 whereby the perfume particle carrier material is selected from encapsulation, swellable carrier material and mixtures thereof.
11. A process according to claim 1 wherein the perfume film chip comprises 0 to 70 wt. % of a dye or a pigment by weight of the final perfume film chip composition.
12. A method of improving the storage stability of perfume particles comprising the steps of
a) forming a film of water reactive material containing inclusions of perfume particles;
b) solidfying said film by cooling and/or drying and
c) comminuting the solidified film into perfume film chips comprising inclusions of perfume particles wherein said particles comprise particle carrier material and perfume loaded into said carrier material.