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Plastic PP IML Dairy Cup Injection Molding

In-mold labeling (IML) injection molding transforms dairy packaging by fusing high-quality polypropylene labels with durable cup walls during a single production cycle. This advanced process, central to our PP IML Yogurt Container Injection Moulding technology, eliminates post-decoration steps while delivering scuff-resistant, moisture-proof graphics that stay vibrant through filling, distribution and refrigeration. Our Polypropylene IML Plastic Yogurt Pot Injection Molding systems are engineered for high-cavitation molds with cycle times as fast as 4.8 seconds, enabling dairy producers to combine lightweighting goals with eye-catching shelf appeal. The hygienic monolayer construction also removes lamination layers, simplifying recyclability and supporting circular packaging mandates without sacrificing barrier performance.


The Plastic PP IML Dairy Cup Injection Molding line is designed for high-volume dairy containment with precise wall thickness distribution and rapid label positioning accuracy. Its core module integrates direct melt injection, robotic label insertion and in-cavity cooling calibrated to polypropylene’s narrow processing window. Below are the primary technical parameters that define the system’s capabilities.

  • Material: Food-grade polypropylene (PP) with melt flow index 12-35 g/10 min, suitable for thin-wall molding
  • Cavitation range: 2+2 to 8+8 stack molds, producing up to 16 cups per cycle
  • Clamping force: 180 to 650 tons, matched to mold size and projected area
  • Injection unit: Dedicated PP screw with 25:1 L/D ratio and barrier profile, shot capacity up to 1,200 grams
  • Label feed: Servo-driven rotary magazine, positioning repeatability of ±0.1 mm
  • Cycle time: 3.8–6.5 seconds depending on wall thickness (0.35–0.80 mm) and label complexity
  • Cooling system: Water-circulated channels with conformal cooling in critical zones, monitored by dual thermocouples
  • Control interface: 15-inch touchscreen with proprietary IML management software, remote diagnostic ready
ParameterValue
Mold base materialPre-hardened stainless steel (HRC 34-38)
Label materialPP film, 0.04–0.08 mm thickness, corona treated
Reject rate<0.3% continuous production
Energy consumption0.32–0.45 kWh per kg of material
Label positioning accuracy±0.15 mm in x/y axes
Maximum cup height120 mm (stackable design)
Supported rim diameters65 mm to 115 mm
ComplianceFDA, EU No 10/2011, ISO 9001:2015

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