A yogurt cup injection mould has to support fast output, clean appearance, stable stacking, and reliable sealing for dairy packaging. Small variation in rim size, wall thickness, label position, or cup roundness can create problems on filling and sealing lines.
For buyers, the mould should be specified around the complete packaging system: cup volume, resin, IML or non-IML decoration, foil or lid sealing, stack direction, filling equipment, cold-chain handling, and expected annual output.
Cup Geometry and Sealing Requirements
Yogurt cups need consistent wall thickness, a strong rim, a stable bottom, and predictable shrinkage. If the rim is uneven, foil sealing or lid fit can fail even when the cup body looks acceptable.
The mould design should be reviewed together with the sealing method and downstream equipment. Buyers should confirm top diameter, rim profile, cup height, stack height, label area, and acceptable dimensional tolerance before steel is cut.
IML and Branding Considerations
For in-mold labeling projects, the mould must support label placement, static control, robot access, and clean demolding. Label drift, wrinkles, or poor bonding can turn an otherwise good cup into a rejected packaging component.
Buyers should send label drawings, label material, robot information, cup drawings, and appearance standards. Hengqi can then review whether cavity geometry, vacuum support, and mould opening space match the intended IML workflow.
Hot Runner, Cooling, and Multi-Cavity Balance
High-volume yogurt cup moulds often use multi-cavity layouts and hot runner systems. The runner layout must fill each cavity evenly, while cooling must protect the rim, side wall, and bottom from deformation.
During sampling, buyers should check cup weight, cavity balance, rim roundness, stacking behavior, label position, gate mark, and cycle time. Consistency across cavities is more important than one perfect sample.
Hygiene and Production Handover
Dairy packaging requires clean, repeatable production. The mould should be easy to maintain, with accessible hot runner components, clear water circuit marking, suitable surface finish, and spare parts for wear areas.
Before shipment, request trial records, sample sets from every cavity, material data, cycle-time results, label-position checks if IML is used, and maintenance instructions. These documents help the buyer move from mould acceptance to stable dairy cup production.
