How Temperature Affects TPE Sex Dolls?

Before starting, it’s worth understanding what TPE actually is and why it’s so widely used in doll manufacturing.

What Is TPE?

TPE stands for Thermoplastic Elastomer, a class of polymers that exhibit both the elasticity of rubber and the moldability of plastics. This unique blend means TPE can be heated and shaped like plastic, yet still offers a soft, flexible feel similar to rubber—a big reason it’s become a popular choice for realistic dolls.

The Melting Point of TPE

Generally, TPE has a melting point in the range of 150–200 °C. However, the exact melting point of each TPE formulation can vary depending on its composition, additives, and manufacturing process. Doll manufacturers typically add oils, fillers, and stabilizers to adjust softness, color, and durability. Because formulations vary by brand, each TPE doll has its own melting point.

Based on previous tests, Mishka1965, a doll expert on TDF, once published related content on repairing TPE show that TPE will melt when it exceeds 110℃, so that TPE dolls can be better repaired when TPE melts.

TPE repairs, a comprehensive tutorial on TDF: https://dollforum.com/forum/viewtopic.php?p=1325585#p1325585

If you need to determine your doll’s melting point, purchase a TPE test block from the manufacturer and use a heat gun to test it—always follow safety guidelines when applying heat.

How Temperature Affects TPE Sex Dolls?

First of all, we should take care of sex dolls as we take care of human skin. TPE material is sensitive to temperature (hot and cold). However, there has not been a clear temperature range for the heat resistance of this composite polymer material.

In addition, low temperature has less impact on TPE material than high temperature. Like humans, the skin of sex dolls will feel stiff under low-temperature conditions, and the doll’s “fluctuations” will also be suppressed. If the doll is placed in a very cold environment, its material will become hard and no longer soft.

Compared with temperature, high temperature will destroy the physical structure of TPE, while low temperature is different. Low temperature only temporarily causes the material to fail. Once the doll is brought back to the correct temperature, the original stiffness will slowly disappear and return to its original state. But TPE dolls are also more fragile and more susceptible to damage at low temperatures.

What is the optimal storage temperature for TPE sex dolls?

According to material reference data, it is generally believed in the industry that the storage temperature range of TPE materials can be maintained between -40℃ and 60℃, but there is no evidence or research to prove that this value range is correct.

According to WM and ZELEX, the appropriate storage temperature for TPE sex dolls is between 5°C and 28°C. Within this range, TPE can be stored safely without the risk of degradation or loss of performance. However, the best storage temperature for TPE, as recommended by WM and ZELEX, is between 18°C and 20°C.

In summary, it is important to store TPE sex dolls in a suitable environment with a temperature range between 18°C and 20°C. It is also necessary to avoid using water above 60°C to clean them.