TPU Bionic Film + Graphene Heating Robotic Bionic Skin （rafavi Bionic Skin）

Giving Robots the Warmth and Sensitivity of Life

Presented by Beijing Richsifang Automotive Technology Co., Ltd.
Automotive‑Grade Precision × Next‑Generation Biomimetic Interfaces

From “Lifelike” to “Alive”

Bionic Skin Is More Than a Shell

For service robots, humanoid robots, and high‑end animatronics, realism is no longer just about appearance. True human‑like interaction requires skin that delivers warmth, tactile sensitivity, and dynamic response.

rafavi Bionic Skin combines automotive‑grade precision manufacturing with advanced biomimetic materials to achieve a world‑first integration of:

• TPU nanofiber matrix — breathable, highly elastic, “breathes” like real skin
• Graphene active heating layer — precisely simulates human body temperature (36–37 °C)
• MXene/graphene hybrid sensing network — detects touches as light as a feather and recognizes gestures
• Self‑powered tactile feedback — instant response with zero external power consumption

Core Technology: Not Just Imitation, but Re‑engineering

01 Three‑Layer Biomimetic Structure

Dermis · Actuation · Epidermis

• Dermis base: Electrospun TPU nanofiber membrane, water‑vapor transmission rate ≥57.6%/2h – no stuffiness even with long‑term contact
• Smart actuation layer: Graphene/TPU composite film, electrothermal conversion efficiency >95%, capable of micro‑motions (breathing‑like undulations, touch‑induced retraction) under infrared or humidity stimulation
• Biomimetic epidermis: High‑grade TPE/silicone material with customizable pore, fingerprint, and vascular textures for unmatched visual and tactile realism

02 Ultra‑Sensitive Tactile Sensing

Surpassing Human Fingertip Sensitivity

Inspired by mussel‑adhesion structures and micro‑crack networks, the sensor achieves a gauge factor >80,000 and can detect strain as low as 0.05%. It not only senses pressure but also distinguishes stroking, pressing, and sliding gestures with high precision.

03 Graphene Active Warming

Say Goodbye to the “Cold” Robot

• Uniform far‑infrared radiation with no hot spots
• Programmable temperature curves: maintain natural human skin temperature in normal conditions, automatically compensate in cold environments
• Up to 70% improvement in thermal realism compared to conventional silicone skins

BOM List + Process Drawing Specification

1. BOM List (Directly Issuable to Factory)

1.1 Core Materials

表格

1.2 Structural Auxiliary Materials

表格

1.3 Electrical Components

表格

2. Process Drawing & Structure Specification

2.1 Layer Structure (Top to Bottom)

1. Surface Layer: TPU Bionic FilmThickness: 0.1mm (face) / 0.2mm (body); surface with pore texture; edge fillet R2mm
2. Heating Layer: Graphene Heating FilmThickness ≤0.1mm; heating area indented 5mm from edge
3. Insulation Layer: PU Insulation FilmThickness 0.02mm
4. Bottom Layer: Silicone Buffer FoamThickness 0.3–0.5mm

Total Thickness

• Face: ≤0.5mm
• Body: ≤0.8mmTolerance: ±0.05mm

2.2 Standard Dimensions

• Face bionic skin: 220mm × 180mm
• Body bionic skin: 300mm × 200mm
• Cable outlet: 8mm × 30mm; centered on one side
• All edges: fillet R2mm

2.3 Electrical Interface Definition

• VCC: DC 12V
• GND: Ground
• NT: NTC temperature signal
• Protection: Auto power-off at 42°C

3. Production Process Flow (SOP)

1. TPU Film PrepCleaning → Plasma surface treatment → Skin-tone printing → Pore texture embossing
2. Graphene Heating Film PrepLaser cutting → Continuity test → Insulation encapsulation
3. LaminationHot-melt adhesive alignment → Hot pressing (60°C / 0.2MPa / 10s) → Holding & cooling
4. Circuit IntegrationFPC soldering → Lead fixing → Waterproof sealing
5. Function TestHeating test → Constant temperature stability → Insulation test → Bending test → Waterproof test
6. Final Inspection & PackagingAppearance / dimension / function inspection → ESD packaging

4. QC Acceptance Standard

• Heating performance: ≥0°C in 0.5min at -20°C; ≥30°C in 2min at -20°C
• Constant temperature: 36±1°C; fluctuation ≤±0.5°C
• Waterproof: IPX4; normal operation after 24h water immersion
• Durability: No failure after 100,000 bending cycles
• Safety: Low-voltage supply; over-temperature protection; qualified insulation

5. Product Example Diagram (For Reference)

Attached: TPU Bionic Film + Graphene Heating Robotic Bionic Skin Rendering

• Structure: TPU skin surface + graphene uniform heating + flexible temperature control
• Features: Realistic texture, 36°C constant temperature, high elasticity, long durability

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