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Gas-Assisted Injection Molding Tool: Precision Mold for Hollow-Structure Plastic Components

What is the advantage of gas assist mold and injection molding parts
1. low injection pressure
2. A small deformation of the part
3.good surface quality
4.the thick part of the products is hollow ,reducing plastic up to 40%
 
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  • Yixun-23059

  • China mold brand

  • 8480419090

Gas-assisted injection molding (GAIM) molds are specialized tooling designed to produce lightweight, high-strength hollow plastic parts—ideal for automotive, electronics, and household appliance industries. Our gas-assisted molds integrate advanced gas channel design, pressure control systems, and precision cavity engineering to deliver defect-free, material-saving components.


I. Product Overview: Redefine Hollow Part Molding

This gas-assisted mold is engineered to solve pain points of traditional injection molding (e.g., sink marks, warpage, excessive material use):
  • Mold Type: Custom gas-assisted injection mold (suitable for 1–32 cavities, based on part size).

  • Core Features:

    • Integrated Gas Channels: Precision-drilled gas channels (0.5–1.5mm diameter) that inject nitrogen gas into the plastic melt to form hollow structures.

    • Gas Pressure Control System: Synchronized gas pressure (5–25 MPa) and timing control to ensure uniform hollowing without surface defects.

    • Durable Tool Steel: S136/H13 mold steel (HRC 48–52) with corrosion-resistant coating, supporting 1–3 million production cycles.


II. Key Advantages of Gas-Assisted Molds

  • Lightweight Components: Reduces part weight by 20–40% via hollow structures (lower material costs and transportation fees).

  • Defect Elimination: Eliminates sink marks, warpage, and stress concentrations (common in thick-walled traditional parts).

  • High Structural Strength: Hollowed sections maintain rigidity (e.g., automotive door handles, electronic housings) while reducing material use.

  • Cost Efficiency: Cuts material consumption by 15–30% and shortens cooling time by 20% (boosts production efficiency).


III. Mold Design & Gas-Assisted System

The performance of GAIM molds relies on precise gas channel and cavity engineering:

1. Gas Channel Design

  • Channel Layout: Optimized to follow the part’s thick-walled areas (e.g., ribs, bosses) to ensure smooth gas flow and uniform hollowing.

  • Gas Nozzle Integration: High-precision gas nozzles (leak-proof seal) that inject nitrogen at controlled pressure/timing (synchronized with injection cycles).

2. Cavity & Cooling System

  • Cavity Tolerance: ±0.005mm to match gas-assisted melt flow characteristics, avoiding uneven wall thickness.

  • Conformal Cooling Channels: 3D-printed channels that follow the part’s contour, ensuring uniform cooling of hollow sections (prevents deformation).


IV. Compatible Materials & Applications

This mold works with most thermoplastics and serves high-demand industries:
Material Typical Components Industry
PP, PA66+Glass Automotive door handles, mirror brackets Automotive
ABS, PC Electronic device housings, TV stands Electronics
PS, PMMA Household appliance handles, furniture parts Home Goods

V. Quality Control & Process Validation

  • Gas System Testing: 100% leak testing of gas channels to ensure stable pressure control.

  • Trial Run Validation: 500–1000 test injections to optimize gas pressure, timing, and melt temperature (ensures defect-free hollow parts).

  • Compliance: ISO 9001-certified manufacturing, with material certificates (COA) for mold steel.


VI. Customization & After-Sales

  • Custom Design: Adapt to your part’s geometry (thick-walled sections, hollowing requirements) with 3D mold flow simulation.

  • After-Sales Support: 12-month warranty, on-site gas system calibration, and mold maintenance training.

gas assisted plastic parts

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