In the fields of food processing, cooking utensils, etc., the safety and durability of food-grade silicone rubber sheets are crucial. The following are the key points for purchase:
1. Certification and safety
Make sure that the food-grade silicone rubber sheets have passed international authoritative certifications (such as FDA, LFGB or SGS). These certifications indicate that the materials are non-toxic, have no irritating odor, and do not release harmful substances. Avoid using silicone products that are not marked with certification to prevent health risks.
2. Temperature resistance and durability
High-quality food-grade silicone rubber sheets need to withstand extreme temperatures from -50℃ to 250℃, and remain flexible and dimensional stable after repeated heating. A simple test can be performed: observe whether they are deformed or emit odor after heating at high temperature.
3. Material and process
Choose silicone sheets made by 100% gas phase process. Such products have high purity and few impurities. Inferior silicone may be mixed with fillers, easy to age and crack, and long-term contact with food poses a safety hazard.
4. Applicability and design
Choose thickness (1mm-10mm) and hardness (Shore A 20-80 degrees) according to the purpose. For example, food packaging gaskets require high elasticity, while baking mats require a non-stick surface. Make sure that the food-grade silicone rubber sheet is suitable for the equipment or mold specifications.
5. Daily maintenance verification
After use, observe whether the food-grade silicone rubber sheet is easy to clean and stain-resistant. Inferior products are prone to residual oil stains or breeding bacteria.
In summary, the purchase of food-grade silicone rubber sheets requires comprehensive certification, performance, process and actual needs to ensure food safety and long-term use benefits.