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Logistics Crate & Box Injection Molding

Turnover crates, stackable boxes and pallet containers are structural products with long service lives. The molding challenge is stiffness and impact resistance at the lowest possible weight.

What logistics containers demand

Materials and machine implications

MaterialUseMachine note
PP copolymerStandard turnover cratesGood impact/stiffness balance
HDPEHeavy-duty boxes, palletsHigh shrinkage — mold and process control matter
Glass-filled PPReinforced basesAbrasive; hardened barrel options

Machine selection

Large crates need high clamping force and large shot capacity with long, stable holding phases — the same profile as large appliance parts. Direct-pressure and high-performance series fit this profile; precision is measured in consistent part weight at high shot volumes.

SK series mechanical direct-pressure machineSeries page
S series high-performance machineSeries page

Crate molds are heavy and expensive; confirm the machine's tie-bar spacing and shot capacity against the mold drawings before committing either side.

Frequently asked questions

What material suits turnover crates?

PP copolymer is the standard for impact/stiffness balance; HDPE for heavy-duty boxes and pallets where its higher shrinkage is accounted for in the mold.

Why do crates fail in stacking?

Usually under-designed corners and bases, or inconsistent wall thickness from an unstable process. Stacking load testing with production parts is the reliable check.

What machine profile suits large crates?

High clamping force, large shot capacity and long stable holding phases — direct-pressure and high-performance series are the natural fit.