Dosing and dispensing device for liquid laundry detergent
View Patent ↗A container adapted to contain and dispense a product and method for its use. The container comprises a hollow body, a filling opening, a dispensing opening, a valve and a resiliently deformable means for said valve. The valve may form a leak-tight engagement with the dispensing opening, and is openable by an external force acting on said valve whereby the leak-tight engagement is disengaged, allowing the product to be spread onto a fabric by the valve. The container may be used in a method for pretreating and subsequently laundering pretreated fabrics in an automatic washing machine.
1. A method of dispensing a detergent, the method comprising the steps of:
providing a container adapted to contain and dispense a detergent, said container comprising a hollow body, a filling opening, a dispensing opening, a moveable valve and a resiliently deformable means for said valve, wherein in a first position the moveable valve is urged against the dispensing opening by the said resiliently deformable means achieving a leak-tight engagement between said valve and said dispensing opening, wherein in a second position the valve and the dispensing opening are disengaged when the resiliently deformable means are deformed by an external force acting on said valve creating a fluid flow pathway which has a cross section of great than 10% of the width of the dispensing opening through which fluid flow pathway the detergent may be dispensed from the container;
providing a liquid detergent to the said container via the filling opening and;
subsequently dispensing a portion of the liquid detergent present within the said container via the dispensing opening to a soiled area of a fabric, and,
thereafter inserting the container and the fabric into an automatic washing machine for an automatic wash cycle.
2. A method according to claim 1 wherein said flow pathway is disposed at a side of the valve.
3. A method according to claim 1 wherein said resiliently deformable means comprises a spring located under said valve.
4. A method according to claim 1 wherein said resiliently deformable means is made of a material selected from the group consisting of: injected resins, elastomeric polymers and a combination thereof.
5. A method according to claim 1 wherein the container further comprises a spreading/scrubbing means.
6. A method according to claim 5 , wherein the spreading/scrubbing means is in the form of a ridge, which is linear or curved.
7. A method according to claim 1 wherein said container is made of a rigid or flexible material.
8. A method according to claim 1 wherein said container is in the form of a bottle or a tube.
9. A method according to claim 1 wherein said container is a dosing and/or dispensing device.
10. A method according to claim 1 wherein said valve has a terminal shaped dome.