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Food machinery materials can be used by those

Food machinery materials can be used by those

Answer:

With the development of the food industry, the problem of food hygiene is becoming more and more important. Because the food in contact with the food directly determines the health of the food, therefore, in the process of food processing and packaging, the first consideration is the food contact with the food, and can not have any pollution to food.
Considering the cost and health point of use of nonmetallic materials, other materials can be used instead of stainless steel, now suitable material is polypropylene (pp.polypropylene) which is a polymer material (- CH3, CH - N) is a crystalline plastics, its mechanical properties such as strong rigidity, hardness, elastic modulus other than a non-toxic plastic polyethylene, it also has excellent heat resistance, in the absence of external force, heating to 150 DEG C is commonly used in plastic deformation, only can withstand high temperatures, materials. Compared with stainless steel, it has the advantages of corrosion resistance and cost, but stainless steel is not as good as stress and surface hardness. Many parts of the food machinery can be used instead of stainless steel. In addition, in contact with food may also consider the use of ceramics and other materials.
Because the surface of the metal is corroded and then contacted with the food, it is contaminated with food. Therefore, in the design of food machinery, the metal materials which are contacted with food are used to Srainless.steel.

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