PP Injection Molded Dairy Cup for Yogurt

The dairy packaging sector demands absolute precision, and our Injection Molded PP Cup for Yogurt delivers exactly that. Engineered for high-speed filling lines, this container offers exceptional sidewall rigidity without brittleness, preventing cracks during capping and stacking. The polypropylene resin used meets FDA and EU food contact standards, containing no BPA or phthalates. Unlike thermoformed alternatives, injection molding guarantees uniform wall thickness distribution down to ±0.05 mm tolerance, a critical factor for achieving hermetic seal integrity with aluminum foil or snap-on lids. Every batch undergoes automated vision inspection to reject parts with flash, short shots, or surface blemishes. Dairies across Europe and North America rely on our Polypropylene Plastic Cup for Yogurt for both ambient and cold chain products, benefiting from its wide processing window that accepts filling temperatures from 4°C up to 85°C without deformation.

The is manufactured using electric injection molding machines with closed-loop process control, logging cavity pressure curves for every shot to ensure traceability. The mold core and cavity steel undergoes vacuum heat treatment to HRC 48-52, then receives a diamond-polished finish below Ra 0.025 μm, producing cups with glass-like inner surfaces that facilitate clean product release and minimize residual yogurt adhesion. Stacking lugs are molded into the rim design, enabling stable pallet loads exceeding 600 kg without column collapse. We offer in-mold labeling capability, where a thin polypropylene label fuses homogeneously with the cup wall during injection, creating a single-piece construction that withstands condensation and cold storage without peeling. Secondary operations include corona or plasma surface treatment to elevate dyne levels above 42 mN/m for subsequent printing, as well as UV-curable ink decoration systems. Custom colors are matched to Pantone references using masterbatch dosed at the machine throat, maintaining delta E below 1.0 across production lots. Clarity ranges from transparent clarified PP with haze values under 8% to opaque white formulations with titanium dioxide loading optimized for light barrier performance in probiotic and fruit preparation applications.

Technical Specifications

Key Product Features

• ► Leak-proof rim geometry – Sealing bead profile optimized through FEA simulation ensures zero liquid migration under 0.8 bar pressure differential.
• ► Rapid cycle time – Electric servo-driven machines achieve 4.5-6.5 second cycles, delivering output rates up to 28,000 cups per hour per mold set.
• ► Condensation resistance – Micro-textured inner surface reduces droplet nucleation, keeping the yogurt surface visually clean during shelf life.
• ► Light barrier options – TiO₂-loaded white body blocks >99% of UV and visible light below 500 nm, protecting probiotics and fruit color stability.
• ► Denesting consistency – Controlled draft angles of 2.5°-4° per side plus silicone-free release coating guarantee smooth robotic denesting without doubles.
• ► IML monomaterial construction – Cup and label are both PP homopolymer, enabling full recyclability in standard polypropylene recovery streams per APR design guidelines.
• ► Process validation package – IQ/OQ/PQ documentation, dimensional capability studies (Cpk >1.67), and migration testing reports included with commercial orders.