The mechanism by which dishwasher capsules dissolve rapidly in water mainly relies on the characteristics of their water-soluble membrane materials and the structural design of the capsules. The following is a specific analysis:
First, characteristics of water-soluble membrane materials
Dishwasher capsules usually use water-soluble polymer materials as the outer packaging film, such as polyvinyl alcohol (PVA) or its copolymers. This type of material has the following characteristics:
Soluble upon contact with water: After water-soluble membranes come into contact with water, the hydrophilic groups (such as hydroxyl groups) in their molecular structure will rapidly combine with water molecules, causing the membrane material to expand and dissolve.
The dissolution rate is controllable: By adjusting the thickness and molecular weight of the membrane material or adding additives, its dissolution rate can be controlled to ensure complete dissolution within a short period after the dishwasher starts.
Moderate mechanical strength: In a dry state, the water-soluble film has sufficient flexibility and tear resistance, capable of withstanding external forces during packaging and transportation. However, it rapidly loses strength and dissolves upon contact with water.
Second, capsule structure design
The design of dishwasher capsules usually adopts a multi-layer structure or a special packaging method to facilitate rapid dissolution:
Single-layer water-soluble film encapsulation: The outer layer of the capsule is only wrapped with a water-soluble film, which is directly exposed to water. It dissolves rapidly upon contact with water and releases the detergent inside.
Multi-layer composite film design: Some capsules may adopt multi-layer composite films, with the outer layer dissolving faster and the inner layer dissolving slower, to achieve the phased release of detergent. However, most fast-dissolving capsules are mainly composed of single-layer membranes to ensure complete dissolution within a short period of time.
Miniaturization and thin-walled: The wall thickness of capsules is relatively thin and their volume is small, reducing the time and water required for dissolution.
Third, the working conditions of the dishwasher assist in dissolution
The working conditions of the dishwasher also provide support for the rapid dissolution of the capsules:
High-temperature water flow: After the dishwasher is started, the water temperature usually reaches 60-80℃. The high-temperature water flow can accelerate the dissolution process of water-soluble films.
Mechanical scouring: The high-pressure water flow generated by the spray arm exerts an impact force on the capsule, promoting the rupture and dissolution of the membrane.
Moist environment: The high humidity inside the dishwasher keeps the capsules in a moist state all the time, further accelerating their dissolution.
Fourth, the advantage of rapid dissolution
The rapid dissolution mechanism of dishwasher capsules brings the following advantages:
High-efficiency cleaning: The capsules dissolve completely in a short time, and the detergent can disperse quickly and come into full contact with the tableware, improving the cleaning efficiency.
Avoid residue: Rapid dissolution reduces the residue of detergent inside tableware or dishwashers, lowering the risk of corrosion to tableware and dishwashers.
User experience optimization: Users need not worry about poor cleaning effect caused by incomplete dissolution of capsules, and the operation is more convenient.
9tzzuo