Custom Over Molding Solutions — Bost Engineering Plastics

Custom Over Molding by Bost — Precision Meets Performance

Why Bost?

Bost is a professional, innovative and green high‑tech manufacturer specialising in engineering plastics R&D, production and sales. Our custom over molding services combine deep materials expertise with precision mold design to produce durable, high-performance components that meet stringent industrial, automotive and consumer standards. We focus on quality, repeatability and customer satisfaction throughout the entire process.

Advanced Materials & Capabilities

We supply a broad portfolio of specially modified engineering plastics — ultra-high anti-scar, super corrosion-resistant, fatigue-durable, ultra-abrasion-resistant, high-temperature transparent, flame-retardant and conductive thermal grades. Our materials are optimized for overmolding adhesion, wear resistance and mechanical performance so your overmolded assemblies deliver long-term reliability.

Custom Over Molding Process

Our full-service capability includes product mold design, precision mold manufacturing, mechanical processing and assembly. From concept and rapid prototyping to pilot runs and full-scale production, Bost handles multi-material overmolding, hard-soft bonding, steel-plastic combinations and plastic-rubber integrations with strict process control to ensure consistent part quality and tight tolerances.

Quality, Testing & Sustainability

Bost’s technical R&D team performs thorough testing for adhesion, thermal cycling, abrasion, chemical resistance and fatigue life. We implement green manufacturing practices, energy-efficient processes and material optimization to reduce waste and support sustainable product lifecycles. Certification and traceability ensure compliance with customer and regulatory requirements.

Applications & Industries

Our custom over molding solutions serve automotive, electronics, medical devices, industrial equipment, consumer products and more. Typical benefits include enhanced ergonomics, improved sealing, electrical insulation or conductivity, impact resistance and aesthetic finishes — all tailored to your specifications.

Get Started with Bost

Partner with Bost to transform your product with engineered overmolding expertise. Contact our team for material recommendations, design for manufacturability (DFM) review and fast-turn prototyping. We turn complex requirements into reliable, scalable overmolding solutions.

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FAQ:

Can Bost customize modified plastics with special properties?

Yes! We offer modification services such as reinforcement, flame retardancy, conductivity, wear resistance, and UV resistance, for example:
• Adding carbon fiber to enhance stiffness
• Reducing the coefficient of friction through PTFE modification
• Customizing food-grade or medical-grade certified materials

What is the delivery lead time? Do you offer global logistics?

Standard products: 5–15 working days; custom modifications: 2–4 weeks. We support global air/sea freight and provide export customs clearance documents (including REACH/UL certifications).

How do I select the appropriate engineering plastic grade for my product?

Selection should be based on parameters such as load conditions (e.g., pressure/friction), temperature range, medium contact (e.g., oil/acid), and regulatory requirements (e.g., FDA/RoHS). Our engineers can provide free material selection consulting and sample testing.

What are the core advantages of Bost engineering plastics compared to ordinary plastics?

Bost engineering plastics feature ultra-high mechanical strength, high-temperature resistance (-50°C to 300°C), chemical corrosion resistance, and wear resistance. Compared to ordinary plastics, their service life is extended by 3 to 8 times, making them suitable for replacing metals in harsh environments.

What is the minimum order quantity (MOQ)? Do you support small-batch trial production?

The MOQ for standard products is ≥100kg. We support small-batch trial production (as low as 20kg) and provide mold testing reports and performance data feedback.