The material of soft silicone model products is mainly made of silicone rubber and its auxiliary chemical products. The ROHS certification is the safest and environmentally friendly chemical material in the rubber and plastic industry at present. Moreover, the soft silicone model products have been certified by FDA and meet the environmental protection standards, which can be used in the field of food and cosmetics. So soft silicone model products are non-toxic and tasteless. And the production of soft silicone model products using silicone different degrees of hardness to reflect different organs of the human body, so that the soft silicone model can more directly reflect the internal structure of human organs; The image is more realistic.
The main material of PVC model products is made of PVC powder, oil and color paste mixed and blended. The raw materials are heated and cooled by micro-injection glue dropping process. PVC soft glue has the difference between ordinary material and environmental protection material, environmental protection material is also called ATBC-PVC, can pass some lower standards of environmental protection certification, but there is also some toxicity, can not be used in the field of food and cosmetics. PVC model products are generally hard in texture, which can only simply reflect the shape of human tissues, but can not directly and objectively express the degree of softness and hardness of different human tissues.
Soft silicone model products feel soft, good toughness and elasticity, smooth appearance, color, brightness. Because the silicone material has many other similar materials difficult to replace the characteristics, its high adsorption performance, good thermal stability, chemical stability, and high mechanical strength, so the production of the model is durable, the surface of the product can not see the pores, with smooth and realistic feel and accurate shape, convenient teaching display and simulation anatomy training, It is very scientific and practical.
PVC model products have hard hand feel, no toughness, and slightly rough appearance, so the simulation effect of PVC model products is poor, the fidelity of display is limited, there is a certain deviation in the process of teaching and display, the hand feel effect and the sense of experience is not good. In addition, due to the characteristics of plastic texture, the model is easy to embrittlement and damage, which is not conducive to storage, cleaning and use.
