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AssigneeLever Brothers Company
InventorsDavid E. Clarke, James F. Davies, John B. Tune
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A detergent product comprises a water-insoluble, water-permeable bag containing a particulate detergent composition, the bag material having a water-soluble or removable water-insoluble layer to protect the bag material from the composition and to reduce dusting. The protective layer may be coated on or impregnated into the bag material or may form a continuous layer laminated to the inside of the bag material or may be in the form of a separate inner bag. The water-soluble material may be soluble polyvinyl alcohol, polyethylene glycol, polysaccharide, alkali metal silicate, soap, nonionic detergent, gelatine, salts or esters of alginic acid. The removable water-insoluble material may be a silicone, a fatty acid, a water-insoluble cationic fabric softener, polyvinylacetate, insoluble polyvinyl alcohol, clay, zeolite, calcite, silica, titania or a wax. The bag material may be paper and/or plastics material such as polypropylene. The detergent composition is a fully formulated composition or other fabric treatment material.
In a detergent product comprising a particulate detergent composition contained within a closed water-insoluble water-permeable bag formed of sheet material, the improvement which comprises the provision of a layer of water-soluble or water-dispersible material between said particulate detergent composition and said sheet material in an amount effective to protect the bag material from the detergent composition and substantially to prevent dusting-out of the detergent composition through the sheet material when in a dry state.
Dependencies are inferred from the claim text.