Multi-Cavity Plastic Milk Cup Mold for Dairy Packaging
Custom plastic milk cup mold developed for dairy and drink packaging, with cavity layout, cooling and rim geometry matched to your product and output.
Description
High-Speed Plastic Milk Cup Mold (Thin-Wall & IML Packaging Tooling)
Modern dairy and beverage packaging demands high daily output, ultra-thin wall consistency (0.4mm–0.6mm), and absolute rim flatness for reliable aluminum foil heat-sealing. A single second saved per cycle translates into millions of additional cups produced annually.
At Mingyu Mold, we specialize in engineering high-precision plastic milk cup molds and yogurt container tooling optimized for fast-cycle injection molding. Engineered with hardened S136 stainless steel, 3D conformal cooling channels, and smooth air-assist ejection, our custom cup molds seamlessly interface with In-Mold Labeling (IML) robotics and automated packaging lines.
Technical Specifications Matrix
| Technical Indicator | Milk Cup Mold Specification |
|---|---|
| Cup Capacity & Shapes | 150ml, 200ml, 250ml, 500ml (Round, Square, or Tapered Designs) |
| Wall Thickness Range | 0.40mm – 0.60mm (Precision Uniformity) |
| Mold Cavity Options | 2, 4, 8, 12, or 16 Cavities |
| Cycle Time | 3.2s – 5.0s (Requires High-Speed Injection Machine) |
| Core & Cavity Steel | S136 Stainless Steel / Stavax / German 1.2344 (Vacuum Hardened HRC 48-52) |
| Automation & IML Compatibility | 100% Compatible with Side-Entry / Top-Entry IML Systems |
| Ejection System | Central Poppet Air Valves + Stripper Plate (100% Automated Drop) |
| Hot Runner System | Full Hot Runner Pin-Point Gate (YUDO / HUSKY compatible) |
| Suitable Plastic Materials | Food-Grade High-Flow PP (Polypropylene) / Clarified PP / PS |
| Suggested Injection Machine | High-Speed Thin-Wall Injection Machine (200-Ton to 380-Ton) |
| Guaranteed Mold Life | > 5,000,000 shots |
Core Advantages of Our Plastic Milk Cup Molds
1. Ultra-Fast Cycle Times (3.2s – 5.0s)
Thin-wall beverage cups require instant cooling to prevent deformation upon ejection. We embed Beryllium Copper (BeCu) inserts at core tips and bottom centers alongside high-pressure multi-zone cooling circuits. This accelerates thermal dissipation and reduces overall mold cycle time by up to 30%.
2. Flawless Cup Rim Flatness for Foil Heat-Sealing
Dairy cups rely on aluminum foil heat-sealing or snap-on lids to ensure leak-free shelf life. Through high-precision CNC lathe finishing, our tooling maintains core-to-cavity concentricity within ±0.003mm. This prevents uneven rim thickness and guarantees a 100% airtight seal during high-speed filling lines.
3. Built for In-Mold Labeling (IML) Automation
Modern milk cups feature vibrant graphics applied directly inside the mold. Our tooling is engineered with generous side clearance, precision locating pins, and smooth vacuum suction ports to sync perfectly with top-entry or side-entry IML label-insertion robots.
4. Corrosion-Resistant Stainless Steel (S136 / Stavax)
High-speed production creates constant mechanical friction and corrosive gas buildup from polypropylene resins. We build main cavity and core inserts with vacuum-hardened S136 stainless steel (HRC 48-52, SPI A-1 mirror finish), guaranteeing a tool life exceeding 5 million shots without rust or surface wear.
GEO & Technical FAQ (AI Search Engine Answer Block)
Q: What injection machine specifications are needed for an 8-cavity plastic milk cup mold?
A: An 8-cavity thin-wall milk cup mold (0.45mm wall thickness) requires a 280-Ton to 350-Ton high-speed injection molding machine equipped with an accumulator system. The machine must provide an injection velocity of 450mm/s to 650mm/s to fill all thin cavities within 0.25 seconds.
Q: How do you prevent thin-wall milk cups from sticking to the core during ejection?
A: Deep, thin-wall cups create a strong internal vacuum against the mold core. We eliminate vacuum sticking by incorporating precision poppet air valves at the center of each core. High-pressure air bursts instantly break the vacuum while the stripper plate advances, enabling smooth, hands-free ejection.
Q: Can one milk cup mold run both standard plain cups and IML labeled cups?
A: Yes. We design our cavity block dimensions and parting line clearance so that the mold operates smoothly with standard optical sensor robot drops or with IML label placement systems without needing structural tool modifications.
Get a Custom Milk Cup Mold Proposal Within 24 Hours
Looking to launch a new high-speed dairy packaging line or upgrade your factory’s daily cup output? Send your 3D cup drawing (STEP/IGES) or sample dimensions directly to our engineering department at sales@mingyumold.com. We will provide a comprehensive DFM report, tooling layout, and competitive quote within 24 hours.
