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Heavy-Duty Plastic Injection-Molded Grid Tray: Ventilated Storage and Circulation Solution

Engineered for durability, ventilation, and versatility, our plastic injection-molded grid tray is a go-to tool for food service, medical labs, and industrial workflows. Its precision-molded design balances structural strength with functional airflow, making it ideal for drying, organizing, and transporting items.
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  • YIXUN mold

  • 8480419090

Engineered for durability, ventilation, and versatility, our plastic injection-molded grid tray is a go-to tool for food service, medical labs, and industrial workflows. Its precision-molded design balances structural strength with functional airflow, making it ideal for drying, organizing, and transporting items.


I. Product Overview: Built for Ventilation & Durability

This grid tray is optimized for high-use environments:
  • Material: Food-grade/industrial-grade PP (polypropylene)

    • Food-Grade PP: resistant to water, oil, and mild detergents.

    • Industrial-Grade PP: Impact-resistant, temperature-stable (–20°C to 80°C), suitable for heavy loads.

  • Core Features:

    • Ventilated Grid Design: Dense cross-shaped & slotted openings (5–10mm gaps) for maximum airflow/drainage (reduces moisture buildup by 80% vs. solid trays).

    • Reinforced Structure: Edge ribs + corner support feet boost load capacity (up to 15kg per tray) and enable stable stacking (up to 8 layers).

    • Multi-Purpose Details: Corner positioning holes (for stacking alignment) and smooth edges (to avoid scratches on items).

  • Standard Sizes: 400×300mm, 500×400mm (custom dimensions available).


II. Injection Mold Engineering: Precision for Uniformity

The tray’s performance starts with mold design tailored to grid structures:

1. Mold Design Highlights

  • Uniform Grid Cavities: 5-axis CNC-machined mold cores (tolerance ±0.1mm) ensure consistent opening size across the tray—critical for even airflow.

  • Undercut & Rib Integration: Slide mechanisms form the grid’s cross-shaped supports and edge ribs without compromising demolding efficiency.

  • Wear-Resistant Mold Steel: S136 tool steel (HRC 50–52) with anti-corrosion coating ensures 1 million+ production cycles (low maintenance costs).

2. Injection Process Parameters (Food-Grade PP)

Parameter Specification Purpose
Melt Temperature 180–200°C Ensures smooth flow into dense grid cavities (no voids or flow marks).
Mold Temperature 50–60°C Reduces internal stress to prevent tray warpage (maintains stacking fit).
Injection Pressure 800–1000 bar Fills thin rib sections (2–3mm thick) for structural strength.
Cooling Time 40–50s Fully cures the grid to avoid deformation during demolding.

III. Key Advantages

  • Superior Ventilation: Grid design speeds up drying (e.g.lab instruments) and prevents mold/germ buildup.

  • Heavy-Duty Performance: Reinforced structure supports 15kg loads—ideal for industrial part transport or bulk food storage.

  • Hygienic & Easy to Clean: Smooth PP surface + open grid design allow quick washing (compatible with commercial dishwashers).

  • Stackable & Space-Saving: Corner positioning holes enable stable stacking (saves 70% storage space vs. unstackable trays).


IV. Application Scenarios

This tray adapts to diverse industries:
  • Food Service: Dish drying rack, produce storage tray, or catering ingredient organizer.

  • Medical & Lab: Instrument drying after sterilization, sample tube storage (ventilated to prevent condensation).

  • Industrial: Electronic component drying, small part circulation (avoids scratches via open grid), or workshop tool organization.


V. Customization Options

Tailor the tray to your workflow:
  • Grid Size: Adjust opening gaps (3–15mm) for specific items (e.g., smaller gaps for tiny parts, larger gaps for bulky tools).

  • Branding: Molded logos or part numbers (for inventory tracking).

  • Color & Material: Tinted PP (for color-coded organization) or anti-static PP (for electronic component handling).

  • Special Features: Add drainage holes (for liquid-heavy items) or handle cutouts (for easy carrying).


VI. Quality & Compliance

  • Durability Testing: Drop-tested from 1.5m (no cracking) and load-tested to 20kg (no deformation).

  • Traceability: Each batch includes COA (Certificate of Analysis) for material compliance.

injection moldVentilated Storage and Circulation Solution

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