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The world's leading intelligent equipment manufacturer, Xizhi Intelligent, adheres to the concept of "technology driving production transformation".

LFI·Long Fiber Reinforced Injection Molding

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LFI·Long Fiber Reinforced Injection Molding
LFI·Long Fiber Reinforced Injection Molding

High Strength and Lightweight Advantages:

Long fibers (5–25 mm) are uniformly dispersed within the matrix (polyurethane/epoxy resin), enhancing the product’s impact resistance and flexural strength by 30%–50%, making it suitable for dynamic loading applications.

Fiber content is adjustable (20%–60%), with a low density (1.2–1.8 g/cm³), enabling structural weight reduction—up to 40% lighter than comparable metal components.

Customizable upon customer request.

Equipment Introduction

Technical parameters

Application scenario

Performance Features

  • High-strength and lightweight advantages
    Long fibers (5–25 mm) are uniformly dispersed within the matrix (polyurethane/epoxy resin), enhancing the product’s impact resistance and flexural strength by 30%–50%, making it suitable for applications involving dynamic loads.
    Fiber content is adjustable (20%–60%), with low density (1.2–1.8 g/cm³), enabling structural weight reduction—more than 40% lighter than comparable metal components.
  • High-Efficiency Forming and Process Compatibility
    Integrated compounding–injection molding technology delivers fast production cycles (single‑part cycle times of 3–10 minutes), supports complex three‑dimensional geometries—such as automotive interior components with reinforcing ribs—and is compatible with a wide range of resin systems (e.g., polyurethane, nylon) and fiber types (glass fiber, carbon fiber, natural fibers), meeting diverse application requirements.
  • Energy conservation, environmental protection, and low waste rates
    Closed-mold molding reduces raw-material volatilization (VOC emissions are cut by more than 50%), with a scrap rate of less than 5%—one-third that of open-mold processes.
    The dynamic mixing head ensures precise ratio control (A/B component error < 1%), minimizing material waste.
  • Automation and Intelligent Control
    Integrated robotic arm for automated fiber mat and preform placement, supporting continuous production;
    The PLC system provides real-time monitoring of injection pressure, temperature, and fiber distribution, ensuring process stability.

Process flow

Fiber cutting → Mixing → Molding → Mold closing → Curing → Mold opening and part removal

Auxiliary equipment

  • Fiber cutting machine
  • Mixer
  • Note/Injector

Optional Add-ons

  • Exhaust Gas Collection System
  • Four-corner leveling system
  • Space Management System
  • Comprehensive Process System for Composite Materials
  • Mold-changing cart
  • Automotive industry
    Lightweight components such as dashboard frames, door panels, seat brackets (e.g., interior parts for BMW and MINI), and truck roof liners.
  • Construction and Engineering Machinery
    Construction formwork, forklift guard panels, and container flooring (for applications requiring high impact resistance and corrosion resistance).
  • Home Appliances and Consumer Electronics
    Washing machine drum brackets, air conditioner housings, and luggage frame components (with a smooth surface that requires no secondary coating).
  • New Energy and Environmental Protection Equipment
    Wind turbine equipment protective enclosures and wastewater treatment tanks (chemically resistant, long service life).