Which is better, food grade liquid silicone or medical grade liquid

It depends on what you use it for, if the food grade meets your requirements, there is no need to use the medical grade, each has its own requirements and standards.

This mainly depends on what product you make, medical grade liquid silicone will be more expensive than food grade liquid silicone! "Hongfeng" has both silicones, and they will recommend suitable silicone for you according to your product!

<>1. The appearance is different. Liquid silica gel is in a liquid state and has fluidity, while solid silica gel is solid and has no fluidity.

2. Different fields of use. Liquid silicone is used in baby products and kitchen supplies and medical supplies, which can directly contact food and the human body, and solid silicone is used in daily necessities and industrial miscellaneous parts and auto parts.

3. Security is different. Liquid silica gel is a highly transparent and high-safety food-grade material, which does not add vulcanizing agents and other auxiliary materials when forming Qinsun, and is sealed and fed. Solid silica gel is a transparent and environmentally friendly material, and it is necessary to add vulcanizing agent to speed up the vulcanization molding time when molding, and open mold feeding molding.

The performance is different, the field of use is also different, and different raw materials need to pass different testing and certification! Food-grade silicone is mainly used for the production of daily products, and medical silicone is mainly used for medical human body materials, both of which are high-quality silicone raw materials!

Food-grade silicone tubing and medical silicone tubing are made of fumed silica gel raw materials plus platinum vulcanizing agent, and the process molding process is the same, and the formula will be different. The finished products are non-toxic and tasteless, and they are environmentally friendly products, which can be used without reaction to human organs.

If there is little difference between food-grade silicone tubing and medical silicone tubing in terms of appearance alone, it mainly depends on whether there is relevant certification for raw materials or finished products when they leave the factory.

Medical silicone tubing must have professional medical grade (NSF) certification to be sold on the market, but this is only such a qualification for medical device companies, and general industrial silicone rubber processing plants cannot submit such a certificate. Foodstuff.

The certification standard is stricter for medical treatment! There is also a difference in the application. Food-grade application: tableware or food outer packaging, sealing, silicone, etc.! The latter can be used in the body.

and other fields such as cosmetology.

More biocompatible! Therefore, these two silicone adhesive glues also have relevant requirements!

Since KN300 glue is silicone after curing, they often use the same certification system as silicone!

1. Performance.

Food-grade silica gel: the nozzle is round, not flattened, the stress is small, the two counties are less, the wall thickness uniformity instrument, the chemical properties of the product are stable, the reagent resistance is good, and some imported materials have passed the biocompatibility cytotoxicity test, in line with ISO10993

uspclass

vi standard. Medical silicone: highly transparent, environmentally friendly and odorless, sterilized by high temperature and autoclaved. High and low temperature resistance, no deformation at high temperature, no harmful substances, aging resistance. Passed the biocompatibility test.

2. Application field.

Food-grade silicone: food-grade silicone tubing is mainly used as medical device accessories, medical catheters, using inhibition design to ensure safety, food-grade silicone tubing is usually used as a water dispenser, coffee machine diversion pipe, as well as household appliances ventilation line maintenance, used as a medical equipment connecting pipeline, catheter, etc.; Baby bottle mouths, catheters, etc.; Electrical instruments and other casings.

Medical silicone: medical silicone tubing has super performance, and is widely used in oxygen ventilators, medical diversion tubes, pharmaceutical equipment, infusion catheters, cosmetics, biological research, chemical experiments, food and beverage transmission, veterinary drug pharmaceutical fields and so on.

3. Durability.

Food-grade silica gel: resistant to weak acids and alkalis, chemical reagents, liquids, alcohol, etc.

Medical silicone has high strength, tear resistance and strong resilience; It is physiologically inert and implanted in the human body and will not react with human tissues.

Extended Information: First of all, is silicone food grade environmentally friendly?

At present, there are 2 kinds of liquid silica gel, one condensation type (not environmentally friendly, odor, toxic), and one addition molding (completely environmentally friendly, non-toxic and odorless).

Feel: The toughness and elasticity of food-grade silicone are very good, not easy to be permanently deformed due to external force, and the feel will be relatively smooth, while industrial silicone products are easy to deform, and they are relatively rough to the touch.