Industry Information

What are the ingredients of food grade silicone tubes and what are their properties?

   Food-grade silicone tube is a kind of transparent and soft tube, which can pass water, seal and conduct air. With the improvement of extrusion process, many excellent products have been developed, such as food-grade braided silicone tube, two-color silicone tube, high temperature resistance Silicone tubes, flame-retardant silicone tubes, wear-resistant silicone tubes, large-diameter silicone tubes, etc. Due to the stability of the food-grade silicone tube, it is non-toxic, environmentally friendly, and so on. At present, it is widely used in food medicine and daily life. Common application products include: silicone hose for water dispenser, silicone straw for feeding bottle, silicone hose for coffee machine drainage, silicone hose for tea set drainage, etc. Why do these products use silicone material? What ingredients and properties does it have that attract everyone?
   1. Food-grade silicone tube composition: It is an inorganic polymer colloid material formed by polycondensation of silicic acid. The main component is Si02-nH20 (chemical formula), and its content is generally above 96%. The higher the concentration, the better. To put it another way, most of the raw materials of food-grade silicone tubes are extracted by precipitation method. The simple understanding is to put the silica gel in the container for precipitation. The middle and above parts are high-quality raw materials with high transparency and no impurities. This part of the raw materials is used To make food-grade silicone tubes, and some impurities and imperfect phases are precipitated to the lower layer and are generally used on industrial grades. The product is non-toxic and tasteless, and has stable chemical properties. Under normal circumstances, it basically does not react with any substance except strong acids and alkalis. And it has been certified by SGS, CTI, and other testing agencies to comply with FDA, ROHS, NSF, and LFGB. Compared with other materials, silicone tubes are more safe and healthy.
   2. Technical parameters of food grade silicone tube:
material food grade silicone
Hardness (Shore A) 35~70±5°
Density (g/cm3) 1.2±0.1
Elongation at break (%) ≥200%
Tensile strength (Mpa) ≥6Mpa
Tear strength (KN/m) ≥18KN/m
Temperature range (°C) -40~200°C
Anti-yellowing properties No significant change in a year
Environmental protection level ROHS, NSF, FDA, LFGB
color Customizable (generally the default is transparent)
Flame retardant grade (UL) UL-94-HB (V0 can be customized)