Integrated plastic turnover-crate mould solutions

Build warehouse speed into the tool.

From crate definition and CAE flow analysis to hot runners, conformal cooling, trials and handover — HENGSTACK delivers stackable, foldable and nestable crate injection moulds for logistics, food, beverage and agriculture.
√ 200+
√ Chair mould projects
√ 1,000,000
√ Shot life potential
√ ±0.05mm
√ Critical tolerance
√ 30+
√ Export markets
Application Coverage
Built for mainstream crate architectures
Euro / JIS footprints, cavity counts and steel grades matched to resin, tonnage and annual volume.
Stackable plastic logistics crate
Stackable plastic logistics crate molds produce crates in standard modules such as 600×400 and 800×600, widely used in warehousing, transportation, distribution, and production line turnover across industries like food, fresh produce, beverages, pharmaceuticals, electronics, automotive parts, hardware, and chemicals. The mold design focuses on precise stacking registers, base ribs, and load-bearing structure to ensure stable stacking, reliable load capacity, easy palletizing, and reusable circulation — ideal for high-volume, standardized production.
Ventilated fruit and vegetable crate
Ventilated fruit and vegetable crate molds produce plastic crates with ventilation holes, widely used for harvesting, sorting, packaging, transporting, and storing fruits and vegetables such as apples, citrus, grapes, tomatoes, leafy greens, potatoes, and onions. They are also common in wholesale markets, supermarket distribution, cold chain logistics, and fresh food e-commerce. The mold design focuses on ventilation layout, stacking registers, base ribs, and load-bearing structure to ensure airflow, stable stacking, reliable load capacity, easy cleaning, and reusable circulation — ideal for high-volume standardized production.
Beverage/beer plastic crate
Beverage/beer crate molds are used to produce plastic crates widely applied in the packaging, storage, transportation, and distribution of bottled products in the beverage, beer, mineral water, and dairy industries. They are commonly used in breweries, beverage plants, water factories, filling lines, wholesale markets, supermarket distribution, food service supply chains, and returnable logistics, supporting whole-crate handling, stacked storage, and reusable circulation of bottled products. The mold design focuses on bottle divider structure, stacking registers, base ribs, and load-bearing structure to ensure stable stacking, reliable load capacity, impact resistance, easy cleaning, and reusable circulation — ideal for high-volume, standardized production.
Foldable plstic crate
Foldable crate molds are used to produce collapsible plastic crates widely applied in logistics, warehousing, distribution, retail, and manufacturing. They are commonly used in food, fresh produce, fruits and vegetables, beverages, daily chemicals, pharmaceuticals, electronics, automotive parts, and hardware industries, meeting needs for raw material storage, work-in-progress handling, finished goods packaging, transportation, distribution, and returnable logistics. The foldable structure allows empty crates to be collapsed, significantly saving storage and transport space and reducing return logistics costs. The mold design focuses on hinge structure, folding positioning, stacking fit, and load-bearing structure to ensure smooth folding, stable stacking, reliable load capacity, durability, and easy cleaning — ideal for high-volume, standardized production.
Workflow
Custom Crate Mold Development Process
From initial 3D conceptualization to final trial shot testing in our high-tonnage injection machines, our streamlined 6-stage process ensures total transparency.
Discuss the product dimensions, structure, appearance, material, mold steel requirements, injection machine tonnage, and other key information needed for product design.
Communication of requirements
Discuss the product dimensions, structure, appearance, material, mold steel requirements, injection machine tonnage, and other key information needed for product design.
Step 1
The documents to be confirmed include: product 3D drawings, mold drawings, and any related drawings required for mold flow analysis, if applicable.
Technical Drawing Approval
The documents to be confirmed include: product 3D drawings, mold drawings, and any related drawings required for mold flow analysis, if applicable.
Step 2
Prepare the required steel according to customization needs, and arrange mold processing such as CNC machining, EDM, deep-hole cooling, polishing and texturing, as well as steel heat treatment.
Custom Materials & Mold Processing
Prepare the required steel according to customization needs, and arrange mold processing such as CNC machining, EDM, deep-hole cooling, polishing and texturing, as well as steel heat treatment.
Step 3
Conduct trial molding and send samples to the customer for confirmation, and keep improving the mold until the customer approves it as qualified.
Trial Sample Approval
Conduct trial molding and send samples to the customer for confirmation, and keep improving the mold until the customer approves it as qualified.
Step 4
Prepare the mold 2D/3D drawings, inspection reports, etc., and customize wooden crates as required, arrange booking, and confirm the shipping schedule.
Shipment and Delivery
Prepare the mold 2D/3D drawings, inspection reports, etc., and customize wooden crates as required, arrange booking, and confirm the shipping schedule.
Step 5
Provide services such as rapid response, technical support, repair and maintenance, and spare parts supply for customers' mold usage.
After-sales Follow-up Service
Provide services such as rapid response, technical support, repair and maintenance, and spare parts supply for customers' mold usage.
Step 6
Engineering
Designed for large, thin-wall, heavily ribbed crates
Turnover crates combine large projected area, dense sidewall ribs and awkward release directions. Cooling uniformity, slider reliability and cycle stability lead the design.
√ Balanced hot-runner fill
4–8 drops placed on flow length to cut weld lines and short shots, with almost no cold-runner scrap.

√ Conformal / BeCu cooling
Priority cooling in the base and rib zones. Cycle time often 15–30% shorter than conventional circuits.
√ Four-side slider release
Angle pins, wear plates and hard stops keep mesh and ribbed crates from seizing over long runs.

√ Long-life guides & venting
DME / HASCO-style standards. Vent gaps held at 0.015–0.02 mm to limit flash.
Spec Sheet
Configurable Mould Parameters
Typical ranges only. Final build follows part size, resin grade and target output. Part size determines mold structure and machine tonnage; resin grade determines steel and runner system; target output determines tool life and steel grade. Cooling, surface finish, lead time and budget should also be confirmed together.
ItemOptions / ValuesNotes
Cavity / Core SteelP20, 718H, 2738, NAK80, H13, S136Selected by tool life and polish requirements
Cavity / Core HardnessPre-hardened steel HRC 30–35; Heat-treated steel HRC 48–52Directly affects wear resistance and mold life
Mold BaseLKM / HASCO / DME / MISUMILKM S50C or P20 are common choices
Runner SystemHot runner (pin-point gate) / Cold runnerHot runner is common for chairs to reduce cold scrap and improve efficiency
Number of CavitiesSingle cavity (large chairs) / Multi-cavity (stools)Large chairs are usually 1-cavity; small parts can be multi-cavity
ResinsPP, HDPE, ABS, PC, regrindPP is commonly used for chairs; UV-stable PP required outdoors; glass-filled resins need wear-resistant steel
Tool Life300,000 – 1,000,000 shotsP20 approx. 200,000–300,000; 2738/heat-treated steel can reach 600,000–1,000,000
Cycle Time35 – 70 s1.3–2.5 kg chairs: 45–66 s on standard machines; 35–50 s on high-efficiency machines
Injection Machine Tonnage650T – 1650TStandard chairs approx. 850T; PC chairs / gas-assist chairs require 1350T+
Clamp Force CheckProjected area × cavity pressure (350–500 kg/cm²) × 1.17 safety factorMust exceed the parting force; insufficient clamp force causes flash
Surface FinishMirror / grain / rattan EDMParting line should be smooth to the touch
Corrosion ConsiderationPVC/POM/PBT and other corrosive resins require S136, 2316Halogen-containing or acidic plastics require stainless steel molds
CAD / CAEUG, SolidWorks, Pro/E, AutoCAD, MoldflowFill and cooling studies completed before steel is cut
Tools, lines and finished crates
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Send the file. A proposal in 2 working days.
Prepare your project details and glass manufacturing specifications, and we will provide you with a quote within 24–48 hours.
Fill out a Request a Quote form
Prepare your project details and glass manufacturing specifications, and we will provide you with a quote within 24–48 hours.
Once the sample or drawing is received, we will provide a solution within 2 working days to ensure you get the best product for your project.
Send Sample/Picture/3D
Once the sample or drawing is received, we will provide a solution within 2 working days to ensure you get the best product for your project.
Once the drawing is confirmed, you can book online, and we will arrange production as soon as possible.
Order Online
Once the drawing is confirmed, you can book online, and we will arrange production as soon as possible.
Request a Quote
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