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Why thin wall cup mould so expensive?

Why thin wall cup mould price is so high? General speaking, thin wall cup mould are using better steel, hot runner, better cooling, better venting and better demolding effectiveness.

The thin wall cup mould runs on high speed machine which needs withstand high pressure during cup molding, so the mould moving plate and fixed plate thickness are thicker than common mould. There need many interlocks inside the thin wall mould to ensure accuracy and pillar support to avoid deform and eccentric. The plastic airline cup mould need use high hardness steel, high-wear and high-erosion with HRC 55 or above. This means thin wall mould steel cost is higher.

The hot runner design is larger than the common plastic moulds, and at the same time, need limit the melt residence tome to prevent the resin degradation. When the mould is mult-cavities, the gating balance is much higher than that of common molds. Which means thin wall cup mould hot runner cost is higher.