Silica uses in Plastic Film
Silica ( SiO2 ) is an important ingredient used in various industries. One of its many uses is in plastic film manufacturing as an anti-blocking agent or opening agent. The main process used in producing this silica is the precipitation method. In this method, a solution containing silicate ions and a strong mineral acid such as hydrochloric acid are mixed together under controlled conditions. The reaction produces a gel-like substance which then undergoes washing, drying, and milling to obtain the final product.
The main reason for using silica as an anti-blocking agent in plastic film is to prevent product wastage. As plastic films are widely used in packaging, they tend to stick together due to the presence of static charges or other contaminants. This makes it difficult for consumers to separate them, resulting in damage to the films. Silica particles added in small amounts to the film formulations act as tiny spacers between the films, thereby creating air gaps and preventing adhesion. This results in easy separation of the films, reducing product wastage and ensuring that the product reaches its intended end-use in good condition.
Another important aspect of using silica as an opening agent is its high level of purity, non-reactivity with other materials and absence of taste or odor. This makes it safe for use in food packaging applications where the health and quality of the packaged product is of utmost importance. In addition, silica is highly stable and does not decompose even under high temperatures and humidity, ensuring a longer shelf life for the packaged products.
In conclusion, silica produced by the precipitation method has a vital role to play in enhancing the quality of plastic film products. As an anti-blocking agent, it helps reduce wastage and ensures that the product reaches the consumer in good condition. Its high level of purity, non-reactivity and absence of taste and odor make it an ideal choice for use in food packaging applications. The use of silica in plastic film manufacturing is a positive step towards creating a sustainable, high-quality, and efficient packaging industry.