The physical doll brand will popularize the material knowledge of physical dolls for you

1. Introduction to the concept of TPE and silica gel Silica gel is a thermosetting elastomer with the advantages of safety and non-toxicity. It is insoluble in water and any solvent, non-toxic and tasteless, and has stable chemical properties. It does not occur with any substances except strong alkali and hydrofluoric acid. Reaction, high adsorption performance, good thermal stability, stable chemical properties, the earliest widely used in adult products, food products.

 

TPE is a thermoplastic elastomer, which is environmentally friendly, non-toxic, easy to color, smooth and soft to the touch, and has a hardness range of 0A-120A. It can be coated and bonded with PP, PE, PC, PS, ABS and other plastic materials (secondary injection molding), or it can be molded separately. Second, the difference between TPE and silicone:

 

1. TPE is a general term for a variety of elastomer materials that have rubber elasticity at room temperature and can melt and flow at high temperatures. Silica gel is a kind of special rubber. It has good mechanical strength, wear resistance and high temperature resistance after cross-linking. It belongs to thermosetting rubber. It will not melt when heated after vulcanization. When the temperature is too high, it will burn. The product of complete combustion is water. and silica.

 

2. They are different in analytical structure: silica gel is an elastomer connected by silicon-oxygen bonds in the main chain, and the side chain is generally methyl, that is, CH3. TPE is a thermoplastic elastomer, which includes styrene, olefin, and polyurethane. The main difference between the two molecular structures is that one is SI02 structure and the other is CC structure.

 

3. From the point of view of processing performance: silica gel needs to be vulcanized and heated to form, while TPE can be processed and formed without vulcanization. Silicone processing is difficult to form, while TPE production and processing are simple.

 

4. Silica gel has advantages over TPE in high temperature resistance. The temperature resistance of silica gel is generally between 200 degrees and 300 degrees, while TPE theoretically generally has a high temperature resistance of 130-150 degrees Celsius, and then it will age and crack.

 

5. The price of silica gel is generally more than 30,000 yuan per ton, while the general price of TPE is between 13,000 and 30,000. TPE has an advantage in price, except for special TPE materials, such as halogen-free flame retardant, food grade and so on.

 

6. From the perspective of cost, the waste of silica gel cannot be recycled. TPE waste, nozzle material, leftover material, etc. can be completely recycled and reused, and TPE can save more costs. 4. Which is more suitable for dolls, TPE or silicone? Both have their own advantages, but TPE is less expensive than silicone material in terms of processing performance, recyclability, and cost price. With the increasing variety and application of TPE, TPE is the preferred material instead of silicone!

In terms of material safety, silica gel is environmentally friendly, non-toxic and odorless. The most important thing about TPE is that it cannot be reused, while TPE can be recycled. In terms of material characteristics, silica gel has strong wear resistance and high temperature resistance, while TPE material has better softness, but it is easy to deform and has permanent deformation. Physical dolls have very high requirements on wear resistance and deformability, so silicone materials are more suitable for dolls.

 

5. In fact, you can choose the brand of silicone head + TPE body

 

However, the head carving made by TPE is lack of realism. If you choose silicone head carving, it will definitely be more realistic than TPE. This is because of the material. TPE material cannot be used for in-depth painting and carving of the head carving. arrive. The physical doll brand manufacturer is the first domestic doll inversion product made of wax-level head carving + TPE body, but it is not enough to use silicone for head carving, and it also needs the craftsmanship of wax sculpture. At present, the physical doll has its own head carving generation line, and will create the most realistic and cost-effective products in the domestic high-end model.




---Reprinted from the public account: Entity doll combat experience