Plastic Stacking Cups and Bath Toy Set OEM Factory

Stacking cups look like the simplest moulding in the baby aisle and are actually a geometry problem: the stack has to hold together when a toddler carries it, come apart when they want it to, and do both after a season of being chewed. Bath toys add a second constraint — they have to float, drain and not grow mould in the cavity that makes them float. We mould both as one programme because the resin, the plant and the compliance file are the same.

The programme covers stacking cup sets of six to ten pieces, stacking rings, and the bath companions that ship with them: squeeze boats, watering cups and simple character shapes.

Cup geometry

The stack is specified by the taper and the interference between successive cups. Too little taper and the stack collapses when carried; too much and a toddler cannot pull it apart. We specify the fit as a range measured on a gauge, adjusted in the tool, and the first-article report includes the pull-apart force per pair. The base cup carries a drain pattern moulded into its floor so a cup left full in the bath does not carry water across the bathroom.

• Stack fit specified as a measured range, tool-adjusted per pair
• Base cup drain pattern moulded in, not drilled after
• Numbers and shapes moulded in for counting play, print optional
• Wall thickness uniform so cups survive the chew test

Bath toys: float and drain

A bath toy that sinks is a toy that goes down the plughole, so float is specified by the sealed volume and the resin density rather than by trial. Where a toy has a cavity, the cavity is either fully sealed or fully drained: a half-drained cavity grows mould, and mould in a baby product is a recall. Squeeze toys are moulded with a valve geometry that draws and expels water through the same path, specified so the jet is a trickle rather than a stream.

Material and food contact

Everything in the programme is moulded in food-grade PP, BPA free, with the resin declaration and migration documentation supplied with each lot. Colour is masterbatch matched to the buyer's standard, and where a set is specified for teething-age children, the soft elements are quoted in silicone with the same declaration. No phthalate plasticisers are used anywhere in the programme, and that is stated on the compliance sheet rather than left implied.

Compliance and age grading

Baby programmes are produced to the standard the buyer nominates for the target market, typically EN71-1/2/3 and CPSIA for the United States, with the age grade stated on the pack. Small-parts testing is run on the set as shipped, because the question is whether a cup or a part separates in a child's mouth. Where the set is marketed for the youngest age band, film and thin-wall features are designed out before tooling.

Specification

Set economics

The cup family is the platform: one tool family carries a six-piece starter set, a ten-piece standard set and a gift set with bath toys, at three retail price points from one steel investment. Bath toys are amortised across the sets that carry them. We quote the tool family once and each set as a bill of materials, so the range extension cost is visible before commitment.

For adjacent baby programmes, see our silicone teether programme or the Baby & Toddler Toys category.