TPE Injection Molding Guide | China TPE Mold Maker – Focare Mould
TPE Injection Molding Guide | China TPE Mold Maker – Focare Mould
1. What is TPE (Thermoplastic Elastomer)?
TPE combines the elasticity of rubber with the processability of thermoplastics. It can be injection molded like plastic while providing the softness, flexibility, and rebound of rubber. This makes TPE widely used in products that require comfort, slip-resistance, and shock absorption.
2. Key Properties of TPE
| Property | Description | Difference vs. PP |
|---|---|---|
| Elasticity / Recovery | Can be stretched and quickly return to shape | PP is stiffer, recovery is slower or incomplete |
| Hardness Range | Adjustable (Shore A to Shore D) | PP mostly in higher hardness |
| Impact & Cold Resistance | Good toughness even at low temperatures | PP may become brittle in cold |
| Grip / Anti-slip | Soft touch, slip-resistant | PP surface is smooth unless textured |
| 2K / Overmolding | Bonds well with PP, ABS, etc. | PP usually used alone |
3. Common Applications
Handles and grips (tools, toothbrushes, sports equipment)
Seals
Household product bases, non-slip pads
Soft overmold for electronic devices and accessories
Collapsible products
4. Mold Design Considerations
Uniform wall thickness to avoid deformation or uneven cooling
Runner design for smooth flow; large parts may require hot runner or multi-gate design
Ventilation to avoid air traps in flexible parts
Ejector design with proper draft angles to prevent sticking or stretching during demolding
Cooling system for stable dimensions and shorter cycles
Surface finish can be polished for glossy look or textured for anti-slip feel
6. Advantages and Challenges
Advantages
Excellent comfort, flexibility, and touch
Wide hardness range available
Easy to combine with rigid plastics (2K injection or overmolding)
Challenges
Higher cost than rigid plastics
Limited heat resistance compared to PP/ABS
Aging issues (UV, oxidation, cleaning chemicals) if not stabilized
7. Focare Mould’s Expertise in TPE Molds
At Focare Mould, we have extensive experience in TPE injection molding:
Precise molding parameter control for consistent product softness and durability
2K / Overmolding solutions for grips, soft housings, and functional parts
Proven cases across consumer electronics, household goods, and industrial products
High-quality steel and surface treatments for longer mold life and stable mass production
Conclusion
TPE is increasingly important in applications where comfort, flexibility, and anti-slip performance are required. With proper mold design and optimized process control, TPE products can achieve high efficiency and stable quality.
If you are looking for reliable TPE mold solutions, Focare Mould is ready to support you with professional design, engineering, and quotation services.
