PP Injection Molded Cup for Ice Cream

Polypropylene (PP) injection molded cups have become the backbone of modern ice cream packaging, combining structural integrity with excellent thermal resistance. These containers are manufactured through high-pressure injection molding, a process that forces molten PP resin into precision-engineered steel cavities under extreme pressure. The result is a consistently formed cup with uniform wall thickness, smooth interior surfaces, and the dimensional accuracy required for high-speed filling lines. Unlike thermoformed alternatives, injection molded PP cups offer superior rim strength, which prevents deformation during lidding and stacking, and maintains a secure seal throughout distribution and retail display.

Material Composition and Food Safety

Our cups utilize virgin polypropylene grade suitable for frozen food contact, fully compliant with FDA 21 CFR 177.1520 and EU Regulation No 10/2011. The raw material contains minimal additives to preserve clarity and taste neutrality. PP possesses an inherent moisture barrier and a wide service temperature range from -40°F to 250°F (-40°C to 121°C), making it ideal for both freezer storage and microwave defrosting when specified. This grade is BPA-free, phthalate-free, and originates from suppliers with full traceability documentation. Independent migration testing under frozen and room temperature conditions confirms that no substances transfer to the ice cream in detectable quantities.

Key Product Specifications

Below is a breakdown of the core parameters that define our standard injection molded PP ice cream cup range. Custom dimensions, volumes, and decorative options are available upon request.

• Material: 100% virgin polypropylene homopolymer (PP-H)
• Manufacturing process: High-speed injection molding with hot runner system
• Standard colors: Natural translucent, white, custom Pantone matching
• Wall thickness: Uniform distribution from 0.6 mm to 1.1 mm depending on format
• Lid compatibility: Designed for snap-on PE or PP lids, heat-sealable membrane options
• Stacking feature: Anti-rotation lugs and nesting shoulders for stable palletizing
• Shelf-ready decoration: In-mold labeling (IML) or dry offset printing up to 8 colors
• Packaging: Bulk packed in polyethylene bags with corrugated outer cartons

Dimensional Range and Capacities

The table below illustrates our commonly stocked configurations for small to large ice cream servings. Each cup incorporates a draft angle between 1.5° and 3° to ensure clean demolding without affecting the aesthetic of the finished product.

In-Mold Labeling and Print Quality

In-mold labeling technology permanently fuses a pre-printed PP label to the cup wall during the injection cycle, producing a scratch-proof, moisture-resistant graphic that remains vibrant even under condensation. This method eliminates post-process labeling steps and provides 360-degree decoration up to the rim edge. High-resolution gravure or flexo printed labels achieve photographic quality required for premium gelato and artisanal brands. For shorter runs, dry offset printing directly onto the cup surface applies food-grade UV-curable inks with precise registration, offering a cost-effective path to strong shelf presence.

Rim Design and Sealing Performance

The cup rim is engineered with a distinctive bead profile that accommodates multiple closure technologies. A rolled rim with a flat sealing surface ensures full contact with induction heat-seal liners, achieving leak-resistant seals tested at -20°C. Mechanical snap lids engage with an audible click, providing tamper evidence and resealability for consumers. Our rim geometry maintains consistent dimensions within a ±0.15 mm tolerance, critical for automated filling and capping equipment running at speeds exceeding 200 cups per minute.

Logistics and Sustainability Profile

Nestable design reduces freight volume by up to 65% compared to straight-walled containers. Carton quantities are optimized for 40-foot container loads, typically loading 970 to 1,050 cartons depending on cup format. PP offers end-of-life recycling via established polypropylene streams (resin identification code 5). Mono-material combinations with PP lids create a fully recyclable package that aligns with circular packaging commitments. Lightweight construction contributes to lower transportation emissions without compromising the structural demand of frozen storage.