Food freshness preservation is one of the core needs of the food industry, and sealing performance is the key to determining the effect of food freshness preservation. With its comprehensive advantages of excellent sealing performance, safety, environmental protection, and resistance to high and low temperatures, liquid silicone rubber (LSR) is widely used in the field of food packaging sealing. From household fresh-keeping containers to industrial food packaging, it comprehensively strengthens the food freshness barrier, extends the shelf life of food, reduces food waste, and helps the high-quality development of the food industry. The core demand of food packaging sealing is to isolate air, moisture, and dust, preventing food from oxidation, moisture absorption, and deterioration. The sealing performance of liquid silicone rubber can be called the "industry benchmark". It is soft in texture and has excellent elasticity, which can closely fit every gap of the packaging, forming a dense protective layer. It effectively blocks air, moisture, and dust from entering the packaging, maximally retaining the freshness and taste of food, extending the shelf life of food, and reducing food waste caused by sealing failure. Safety and environmental protection are the core competitiveness of liquid silicone rubber applied in food packaging sealing. It has a pure composition, is non-toxic and tasteless, contains no harmful substances, and does not release volatile organic compounds (VOCs). It will not contaminate food when in contact with it, complying with food-grade safety standards and the latest national food safety standards. It not only ensures the safety of food but also meets consumers' demand for green and environmentally friendly packaging, conforming to the trend of green development in the food industry. The advantages of high and low temperature resistance and aging resistance make liquid silicone rubber suitable for various food packaging scenarios. Whether it is fresh food and dairy products that need refrigeration, or snacks, grain and oil that need room temperature storage, liquid silicone rubber seals can maintain stable performance. It can withstand low temperatures of tens of degrees below zero, will not become hard and brittle due to refrigeration, and can also withstand long-term storage at room temperature, not easy to age, deform, or crack. It can maintain a good sealing effect after long-term use, adapting to the storage needs of different foods. From the production perspective, liquid silicone rubber is convenient to process and has strong adaptability. It has excellent fluidity, can be accurately injected into molds of various shapes of seals, and quickly cured and formed. It has precise dimensions and a smooth surface, and can adapt to food packaging of different specifications and shapes. Whether it is the sealing ring of household fresh-keeping boxes and sealed cans, or the gaskets and sealing strips of industrial food packaging, it can be perfectly adapted. Moreover, it can closely bond with various packaging substrates such as plastic, glass, and metal, not easy to fall off, ensuring the reliability of sealing, while simplifying the production process and improving production efficiency. Nowadays, liquid silicone rubber has been widely used in various scenarios such as household food fresh-keeping containers, industrial food packaging, and takeout boxes, becoming the core material in the field of food packaging sealing. With its multiple advantages of excellent sealing performance, safety, environmental protection, high and low temperature resistance, and durability, it solves the pain points of traditional sealing materials such as poor sealing effect, easy aging, and insecurity, and strengthens the food freshness barrier. In the future, with the continuous upgrading of the food packaging industry, liquid silicone rubber will adapt to more high-end food packaging scenarios, provide more reliable support for food freshness preservation, and help the healthy development of the food industry.

Regarding liquid silicone rubber, please refer to our website for details: IOTA Liquid Silicone Rubber