The main component of the outer film of laundry detergent pods is water-soluble polymer materials, and the common ones are as follows:
Polyvinyl Alcohol (PVA)
Characteristics: It has good water solubility, film-forming property, flexibility, and mechanical strength. It can dissolve rapidly in water, enabling the laundry liquid inside the laundry detergent pods to be released quickly. Meanwhile, it can maintain the shape and stability of the pods at room temperature, ensuring that they are not easy to break during storage and use.
Advantages: It is environmentally friendly and biodegradable, and will not cause pollution to the water body and other environments. Moreover, its dissolution rate can be controlled by adjusting parameters such as the degree of polymerization and the degree of alcoholysis to meet different usage requirements.
Application: It is the most commonly used material for the outer film of laundry detergent pods at present and is widely used in various brands of laundry detergent pod products.
Polyethylene Glycol (PEG)
Characteristics: It has good water solubility and hygroscopicity, which can keep the outer film soft to a certain extent in a humid environment and is not easy to crack. At the same time, it also has certain surface activity, which can help the laundry detergent pods disperse and dissolve better in water.
Advantages: It has high safety and is harmless to the human body and the environment. Its relative molecular mass can be adjusted within a wide range, and PEG with different relative molecular masses has different properties, which can be selected and formulated according to needs.
Application: It is often used in combination with other materials such as PVA to improve the performance of the outer film, such as enhancing the flexibility of the outer film and adjusting the dissolution rate.
Other Auxiliary Components
Plasticizers: In order to improve the flexibility and plasticity of the outer film, some plasticizers such as glycerin and propylene glycol are usually added. These plasticizers can be inserted between the polymer chains, reducing the force between the molecular chains, making the outer film softer and not easy to break.
Antioxidants: In order to prevent the oxidative degradation of the outer film materials during storage and use, which affects the performance of the outer film, an appropriate amount of antioxidants such as hindered phenol antioxidants will be added to extend the service life of the outer film.
Pigments and Fragrances: In order to give the laundry detergent pods different colors and scents, some food-grade pigments and fragrances will be added. These components can not only make the laundry detergent pods more beautiful but also bring a pleasant aroma to the clothes.
We are especially produce and export the laundry detergent pods with different formula to meet different requirements from customers, and could supply you OEM and ODM service.
Warmly welcome friends from all over the world to visit our factory or initiate inquiries online. We will sincerely welcome you.
Hebei Guangsheng Technology Co.Ltd
