TPE-KRAIBURG Thermolast K TC5GPZ
Per offrire una piacevole sensazione tattile premium soft-touch rispettando al contempo i severi standard VDA 270 per basse emissioni e basso odore per gli interni automobilistici, è necessario un elastomero specializzato, che il THERMOLAST® K TC5GPZ di KRAIBURG TPE fornisce. Con una densità di 1,10 g/cm³ e una durezza di 49 Shore A, questo elastomero termoplastico a base SEBS è progettato per un'eccezionale coesione del fuso e un'adesione chimica superiore ai substrati in polipropilene (PP). Jucheng Precision, nell'ambito dei quadri IATF 16949 e ISO 9001, è specializzata nel sovrastampaggio multi-shot del TC5GPZ. Supportati dalla nostra attrezzatura CNC a 5 assi, ottimizziamo le linee di divisione e controlliamo l'elevato ritiro elastico, prevenendo distacchi o bave, verificati tramite CMM Zeiss.
Thermolast K TC5GPZ Elastomeric & Low-Emission Profile
THERMOLAST® K TC5GPZ is a universal GP/FG series SEBS-based compound engineered by KRAIBURG TPE, certified to deliver outstanding soft-touch surface feel, exceptional elongation, and low emissions under automotive standards:
| Physical & Tactile Parameter | Thermolast K TC5GPZ Value | Overmolding & Aesthetic Advantage |
|---|---|---|
| Softness & Hardness | Shore Hardness 49 Shore A | Delivers an exceptionally warm, non-sticky, and rubber-like premium soft touch, perfect for high-aesthetic hand grips and covers. |
| Dynamic Elongation | Tensile Elongation at Break 750% | Highly elastic block copolymer matrices provide extreme stretchability without permanent tear or crack propagation. |
| Low Volatile Emissions | Odor Optimized (VDA 270 B-3) | Maintains extremely low fogging and VOC levels under VDA 278, complying with strict commercial automotive cabin requirements. |
Process & Bonding Configurations for Overmolding TC5GPZ
With outstanding melt flow and interfacial chemistry, TC5GPZ bonds permanently during multi-shot cycles:
| Tecnologia di stampaggio | Compatibilità di stampaggio e dettagli operativi |
|---|---|
| Overmolding / Co-Molding | Excellent. The primary process for TC5GPZ. Forms highly reliable, seamless chemical bonds over rigid Polypropylene (PP) substrates, preventing edge peeling. |
| Stampaggio a 2 componenti (2K) | Excellent. Simultaneously injects rigid PP cores and soft TPE grips using advanced rotating platens, saving cycle times and delivering crisp parting lines. |
| Standalone Injection Molding | Excellent. Ideal for standalone, highly flexible components like vehicle car mats, dynamic sealing gaskets, and vibration dampening mounts. |
TPE-KRAIBURG Thermolast K TC5GPZ Tooling & Overmolding Guide
Processing a high-performance block copolymer like TC5GPZ requires strict control of parting lines to prevent flash, alongside careful drying to secure robust bonds:
Perfect Interfacial Adhesion (Overmolding compatibility)
Because TC5GPZ is optimized for chemical bonding with PP, the thermal cohesion at the interface is critical. Our tooling division designs balanced runners to ensure high melt heat is delivered across the bond boundary, while managing mold temperatures at 20°C–40°C (68°F to 104°F) using pressurized water chillers to prevent peel.
Controllo del flash a livello di micron (taglio a bassa viscosità)
At melt temperatures of 200°C–220°C (392°F to 428°F), TPE can easily flash into mold parting line gaps. Jucheng’s tooling division uses 5-axis CNC machines to achieve micro-tolerances, keeping mold parting clearances strictly within 0.010mm on premium S136 stainless steel mold cavity blocks.
Essiccazione con Setaccio e Prevenzione dei Difetti Superficiali
To prevent moisture splay and maximize bonding strength, we desiccant-dry TC5GPZ resin at 60°C–80°C (140°F to 176°F) for 2–4 hours. This eliminates visual silver streaks and ensures a perfectly non-slip, aesthetic finish.
Compensazione dell'elevato ritiro elastico
Like standard TPE, TC5GPZ 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 TPE-KRAIBURG Thermolast K TC5GPZ
- Interni automobilistici e guarnizioni (certificazione IATF 16949): Custom car floor mats, weatherstripping gaskets, window guide seals, soft-touch dashboard panels, and steering column boots.
- Power Tools & Household Grips: Impugnature antiscivolo e soft-touch per cacciaviti, maniglie di trapani elettrici, impugnature per spazzolini, manici per utensili da cucina e coperture per leve regolabili.
- Dynamic Sealing & Enclosures: Flexible dynamic water gaskets, chemical-resistant soft washers, industrial expanding boots, and protective wire-terminal caps.
Proprietà
| Densità | 1.1 g/cm³ |
| Shore Hardness (Shore A) | 49 - |
| Sforzo di trazione a rottura (DAM) | 6.5 MPa |
| Allungamento a rottura (DAM) | 750 % |
| Resistenza alla lacerazione | 14 kN/m |
| Deformazione residua a compressione (23°C, 72h) | 20 % |
| Compression Set (70°C, 24h) | 34 % |
| Deformazione residua a compressione (100°C, 24h) | 66 % |
| Valutazione di infiammabilità | Classe UL 94 HB |
| Drying Temperature Range | 60 - 80 °C |
| Drying Time Range | 2.0 - 4.0 hr |
| Rear Barrel Temperature | 180 °C |
| Middle Barrel Temperature | 200 °C |
| Front Barrel Temperature | 220 °C |
| Intervallo di temperatura dello stampo | 20 - 40 °C |
| Ritiro da stampaggio lineare | 1.5 - 2.5 % |
| Dimensione massima del pezzo | 800 x 600 mm |
| Dimensione minima del pezzo | 1 x 1 mm |