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Excellent soft-touch feel with Shore A 55 hardness for ergonomic handling and comfort.
Good adhesion to polypropylene (PP) and polyethylene (PE) substrates without primer or surface treatment.
RoHS-compliant and free of phthalates, heavy metals, and halogens per standard regulatory requirements.
Optimized for injection molding and two-shot overmolding processes with consistent melt flow and low warpage.
UV-stabilized formulation offering enhanced resistance to discoloration under indoor ambient lighting conditions.
Overmolded grips for power tools and handheld industrial equipment.
Soft-touch buttons and control surfaces in automotive interior components.
Sealing and gasketing elements in consumer appliance housings.
Ergonomic handles for medical devices requiring tactile feedback and cleanability.
Consumer electronics accessories including charging cables, earbud cases, and docking station surfaces.
| Chemical Type | Thermoplastic Elastomer (TPE), Styrenic Block Copolymer (SBC)-based |
| Product Form | Pellets |
| Appearance | Opaque black, uniform color, free of visible specks or gels |
| Shore Hardness (ASTM D2240) | 55 A |
| Melt Flow Rate (ASTM D1238, 2.16 kg @ 200°C) | 12 g/10 min |
| Density (ASTM D792) | 0.91 g/cm³ |
| Primary Applications | Two-shot overmolding, soft-touch grips, sealing components |
| Key Features | PP/PE adhesion, RoHS compliance, soft-touch texture, UV stability |
Q1: What is the primary application profile for RTP 6091-55A BLACK TPE?
A: RTP 6091-55A BLACK TPE is engineered as a soft-touch overmolding compound, commonly used for ergonomic grips, consumer electronics housings, medical device components, and automotive interior trim where tactile comfort, abrasion resistance, and aesthetic consistency are critical.
Q2: Is this grade suitable for two-shot injection molding with common engineering thermoplastics?
A: Yes — RTP 6091-55A BLACK TPE exhibits strong adhesion to substrates such as polypropylene (PP), polyethylene (PE), ABS, and PC/ABS when processed under appropriate mold temperature, melt temperature, and dwell time conditions. Bond strength optimization requires validation within the specific part geometry and processing setup.
Q3: Does RTP 6091-55A BLACK TPE contain halogenated flame retardants or heavy metals?
A: No — this grade is formulated without brominated or chlorinated flame retardants and complies with global RoHS directives regarding restricted heavy metals. It is not inherently flame-retardant; flame performance depends on base polymer selection and additive package.
Q4: What drying conditions are recommended prior to processing?
A: A minimum of 2–4 hours at 70–80 °C using desiccant-assisted drying is generally recommended to achieve moisture levels below 0.05% before injection molding or extrusion. Extended drying times or higher temperatures may be required depending on ambient humidity and material history.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
