TPV-Teknor Apex Sarlink 3140
Offrir une conformité d'étanchéité microscopique exceptionnelle et une durée de vie en fatigue dynamique sous des contraintes de légèreté nécessite un élastomère spécialisé à faible dureté, que le Sarlink 3140 de Teknor Apex fournit grâce à sa matrice de vulcanisat thermoplastique (TPV) non renforcée à base de polypropylène. Avec une faible densité de 0,93 g/cm³ et une dureté de 46 Shore A après moulage par injection, ce grade hautement ductile est conçu pour une excellente résistance à la compression (18 % à 23 °C) et une performance thermique robuste jusqu'à 125 °C. Jucheng Precision, sous les systèmes de qualité certifiés ISO 9001 et IATF 16949, se spécialise dans le moulage haute précision du Sarlink 3140. En utilisant un outillage en acier inoxydable S136 usiné par CNC cinq axes, nous contrôlons son retrait de cristallisation élevé et prévenons les bavures sur les plans de joint, fournissant des composants impeccables vérifiés par CMM Zeiss.
Sarlink 3140 Low-Hardness & Mechanical Recovery Profile
Sarlink® 3140 is a low-hardness, low-density multi-purpose polypropylene-based thermoplastic vulcanizate (TPV) engineered by Teknor Apex, designed to deliver exceptional compression set and elastomeric toughness under ISO standards:
| Paramètre physique et de résistance | Sarlink 3140 Tested Spec | Avantage d'étanchéité dynamique |
|---|---|---|
| Low Hardness Spec | 46 Shore A (Injection Molded / 5s) | Offers high mechanical compliance and low-load sealing compressibility, perfect for squeezable grips and high-sealing lip gaskets. |
| Allongement en traction | Elongation at Break 600% (Cross Direction) | High-molecular-weight polymer matrices provide extreme elastic stretchability without dynamic tear or shear failure. |
| Compression Recovery | Compression Set 18% (at 23°C, 22h) | Maintains excellent, repeatable sealing recovery under long-term compression, preventing leakage under low torque loads. |
Process & Sealing Configurations for Highly Flexible Sarlink 3140
With its ultra-soft matrix and high melt stability, Sarlink 3140 processes consistently inside precise molds:
| Classe de processus de moulage | Compatibilité de moulage et détails de configuration du processus |
|---|---|
| Precision Dynamic Seals & Gaskets | Excellent. Configured with hot-runner manifolds to mold high-compliance water gaskets, soft dynamic seals, and expanding boots. |
| Low-Hardness Squeezable Grips | Excellent. Ideal for overmolding onto rigid PP tool cores, dynamic hand grips, and squeezable cosmetic container caps. |
| Multi-Cavity Automated Fast Runs | Good. Highly optimized for high-pressure injection molding with highly uniform weight replication on large automated runs. |
TPE-KRAIBURG Thermolast M TM6MED Tooling & Overmolding Guide
Molding an amorphous medical-grade elastomer like TM6MED requires strict control of parting lines to prevent flash, alongside cleanroom contamination control:
Optimizing Soft-Touch Tool Release (Draft Angles)
Because Sarlink 3140 is exceptionally soft and flexible, parts can easily stick to cores, causing severe ejector pin drag marks. Jucheng’s tooling division machines generous draft angles (minimum 1.5° to 2.0°) and uses wide ejector pins or stripper bars to distribute demolding forces evenly.
High-Precision合模线 clearances (Flash Prevention)
With its ultra-soft elastomer base, molten TPV can seep easily into minor mold gaps, causing parting line flash. Jucheng’s tooling division uses 5-axis CNC machines to achieve micro-tolerances, keeping mold parting clearances strictly within 0.005mm on premium S136 stainless steel mold cavity blocks.
Cold Mold Temperature Control (Quick Freeze)
We maintain mold temperatures at 20°C–40°C (68°F to 104°F) using pressurized water chillers. Keeping tools cold is critical to freeze the soft elastomeric phase quickly, allowing for automatic, warp-free ejection. Melt temperatures are controlled at 180°C–220°C.
Compensation de retrait élastique élevé
Like standard TPV, Sarlink 3140 exhibits high shrinkage (typically 1.5% to 2.5% depending on hardness and grade). Our tooling division scales mold cavities precisely to compensate for this shrinkage, ensuring exact dimensional results verified by Zeiss CMM.
Key Application Fields for TPV-Teknor Apex Sarlink 3140
- Precision Sealing & Gaskets: Dynamic plumbing mixing-valve seals, high-density water meter connection rings, domestic water gaskets, and high-pressure pipe couplings.
- Automotive Powertrains & Chassis (IATF 16949): High-temperature dust bellows, steering rack protective sleeves, vibration-damping grommets, and chassis seals.
- Squeezable Consumer Grips: Non-slip, soft-touch hand grips for screwdrivers, electric drill handles, toothbrush grips, kitchenware handles, and adjustable lever covers.
Propriétés
| Densité | 0.93 g/cm³ |
| Hardness (Shore A, 5s, Injection Molded) | 46 - |
| Hardness (Shore A, 5s, Extruded) | 41 - |
| Tensile Strength at Break (Cross Flow Direction) | 4.4 MPa |
| Tensile Strength at Break (Flow Direction) | 2.5 MPa |
| Modulus at 100% Elongation (Cross Flow Direction) | 1.2 MPa |
| Modulus at 100% Elongation (Flow Direction) | 2.5 MPa |
| Tensile Elongation at Break (Cross Flow Direction) | 600 % |
| Tensile Elongation at Break (Flow Direction) | 210 % |
| Tear Strength (Cross Flow, ISO 34B) | 16 kN/m |
| Compression Set (23°C, 22h) | 18 % |
| Compression Set (70°C, 22h) | 31 % |
| Déformation rémanente après compression (125°C, 70h) | 52 % |
| Retrait au moulage linéaire | 1.5 - 2.5 % |
| Taille maximale de pièce | 800 x 600 mm |
| Taille minimale de pièce | 1 x 1 mm |