Silicone sex dolls have strict requirements for silicone performance, safety, and process compatibility, which directly impact the user experience, safety, and durability of the product. Specific requirements are as follows:
1. Safety Requirements (Core)
Non-toxic and harmless, meeting contact standards
Must pass authoritative safety certifications such as EU REACH, US FDA, and China GB 4706.100 to ensure the absence of harmful chemicals such as phthalates (plasticizers), heavy metals (lead, mercury, cadmium, etc.), and formaldehyde.
The silicone material itself must be chemically stable and not release toxic substances or cause allergic, irritating, or inflammatory reactions when in long-term contact with human skin and mucous membranes.
Odor-free: High-quality silicone should be free of pungent odors. Odors may indicate residual chemical solvents or inferior additives, posing health risks.
Biocompatibility
While medical-grade silicone does not need to meet implantable medical standards, it must demonstrate basic biocompatibility, meaning it will not trigger immune rejection or toxic reactions when in contact with human tissue, especially in intimate contact scenarios. II. Physical Performance Requirements
Softness and Touch
To simulate the softness and elasticity of human skin, silicone with a lower hardness is typically used (Shore hardness between 0-30A, with adjustments depending on the area, such as firmer for limbs to maintain shape, and softer for the chest and face to enhance touch).
The touch should be smooth and delicate, avoiding roughness, stickiness, or excessive hardness, which will significantly impact the user experience.
Durability and Damage Resistance
Tear and Stretch Resistance: The silicone must possess a certain degree of toughness to prevent cracking, chipping, or deformation during daily use, handling, or cleaning.
Aging Resistance: After long-term use (typically 3-5 years), it should not become hard, brittle, yellow, or crack due to oxidation, light exposure, or temperature fluctuations.
Abrasion Resistance: The surface must be abrasion-resistant and resist linting and wear after repeated washing or contact.
Stability
High and Low Temperature Resistance: The silicone must maintain stable performance at ambient temperatures (-10°C to 40°C), resisting softening or oil leakage due to excessively high temperatures, or hardening or cracking due to excessively low temperatures. Chemical Resistance: It must not dissolve, swell, or deteriorate when exposed to water, neutral detergents, or lubricants.
III. Process Compatibility Requirements
Easy to Process and Mold
The silicone must have good flowability to facilitate the creation of complex shapes (such as facial details and body curves) through mold casting and remolding. The finished surface must be smooth, bubble-free, and flawless.
Colorability: It must evenly absorb food-grade colorants, ensuring natural and realistic skin and hair colors, and resist fading and fading over time.
Compatibility with Other Components: If the silicone doll includes movable joints or electronic components (such as AI interaction modules), the silicone must be compatible with metal, plastic, and other components, not chemically reacting (such as corroding metals) and providing a tight, non-loose fit.
IV. Hygiene and Maintenance Requirements
Easy to Clean: The surface must be smooth and stain-resistant, washable with water or a mild detergent, and resist bacterial growth after drying (some high-end products contain antibacterial ingredients). Waterproof: The entire product or key parts must have good waterproof performance to prevent water from entering and damaging the internal structure during cleaning or use (such as models with electronic components).