Collapsible Plastic Crates are designed for operations where storage space fluctuates between peak and off-peak seasons. Produced by Yancheng Bingo Machinery Equipment Co., Ltd., these crates feature a foldable sidewall mechanism that reduces their collapsed height to approximately 25–30% of the assembled state. Unlike fixed-wall containers, they combine the rigidity of a solid crate with the space efficiency of a flat-pack system, making them ideal for agricultural harvesting, retail reverse logistics, and just-in-time manufacturing supply chains.
The hinge-and-latch assembly uses glass-fiber-reinforced nylon pivots tested for over 50,000 open-close cycles without fatigue failure. When erected, the interlocking corner posts create a true vertical stack without lateral drift, supporting loads up to 180 kg in static column stacking. Yancheng Bingo Machinery Equipment Co., Ltd. validates every mold cavity with pressure transducer data to ensure consistent wall thickness and hinge torque across production batches.
Technical Specifications
Table 1: Collapsible crate dimensions, capacity, and stacking performance
| Model |
External Dimensions (L×W×H) |
Collapsed Height |
Capacity |
Static Stack Load |
Dynamic Load |
Ventilation Open Area |
| CPC-4328 |
400 × 300 × 280 mm |
75 mm |
26 L |
120 kg |
25 kg |
18% |
| CPC-5432 |
530 × 370 × 320 mm |
85 mm |
48 L |
150 kg |
35 kg |
22% |
| CPC-6440 |
600 × 400 × 400 mm |
95 mm |
72 L |
180 kg |
45 kg |
25% |
| CPC-7550 |
750 × 500 × 500 mm |
110 mm |
140 L |
200 kg |
55 kg |
28% |
Folding Mechanism and Durability
Hinge System
The long and short sidewalls pivot on molded-in living hinges reinforced with 30% glass-fiber nylon inserts. This hybrid design eliminates metal fasteners that could corrode or loosen during steam-cleaning cycles. The hinge axis is offset by 8 mm from the crate centerline, creating a self-centering action that prevents wall bowing under internal load pressure.
Latching and Drop-Down Gates
Each crate includes at least one drop-down access gate on the long side, secured by spring-loaded latches rated for 500 N of impact force. The gate opening allows partial SKU retrieval without unstacking the entire column, a critical feature for FIFO inventory rotation in cold-storage environments. Yancheng Bingo Machinery Equipment Co., Ltd. offers optional full-perimeter latching for high-vibration transport modes such as rail and maritime drayage.
Application Scenarios
- Agricultural Harvesting: Ventilated sidewalls promote air circulation for field-fresh produce, while the collapsed return volume cuts seasonal transport costs by up to 65%.
- Bakery and Dairy Distribution: Smooth internal surfaces and rounded corners simplify sanitation to meet EU 10/2011 and FDA food-contact requirements.
- Apparel Reverse Logistics: Collapsed crates occupy minimal floor space in retail backrooms during low-return periods, then deploy rapidly during promotional return windows.
- Automotive Sequencing: Drop-down gates enable line-side operators to access components without interrupting forklift replenishment cycles.
Customization and Accessories
Yancheng Bingo Machinery Equipment Co., Ltd. provides modular add-ons that extend crate utility without compromising the fold-flat profile. Available options include:
- Interlocking lid systems with integrated security seals for pharmaceutical and high-value electronics transport.
- Label holders molded into the short sidewalls, sized for standard A5 barcode sleeves or RFID inlays.
- Drainage plug kits that convert solid-base models into wash-down crates for seafood and poultry processing.
- Color-coded corner caps that support visual inventory zoning without requiring adhesive labels.
Frequently Asked Questions
1.How does a collapsible crate differ from a nestable tote?
A collapsible crate uses hinged sidewalls that fold inward, reducing height while preserving the full footprint. A nestable tote tapers all walls so that empty units fit inside one another, reducing both height and plan area. Collapsible crates maintain a rigid rectangular footprint when erected, making them preferable for automated stackers and conveyor merges where dimensional consistency is critical.
2.What is the expected service life of the hinge mechanism?
Accelerated fatigue testing conducted by Yancheng Bingo Machinery Equipment Co., Ltd. demonstrates a mean cycle count exceeding 50,000 open-close operations before hinge stiffness degrades by more than 15%. In typical distribution environments with one cycle per day, this equates to a functional lifespan of over 15 years. Hinge replacement kits are available for field repair without discarding the crate shell.
3.Can collapsed crates be washed in industrial tunnel washers?
Yes. The polypropylene formulation withstands continuous exposure to water temperatures up to 80°C and common alkaline detergents used in food-industry wash tunnels. When collapsed, the flat profile allows spray jets to reach all internal surfaces without shadow zones. Yancheng Bingo Machinery Equipment Co., Ltd. recommends inspecting hinge pivots every 2,000 wash cycles for calcium buildup that could increase friction.
4.How many collapsed crates fit on a standard pallet?
Stacking density depends on model size. For the CPC-5432, approximately 18 collapsed units fit on a 1200 × 1000 mm pallet, compared to only 4 erected units. This 4.5× density improvement directly reduces return-freight costs and warehouse aisle congestion during seasonal troughs.
5.Are there temperature limits for outdoor storage?
The standard copolymer grade operates from -30°C to +90°C. For extreme cold-chain applications such as blast freezing at -40°C, Yancheng Bingo Machinery Equipment Co., Ltd. offers a specialized impact-modified resin that maintains hinge flexibility without brittle fracture. UV-stabilized grades are also available for outdoor agricultural use where prolonged sun exposure would degrade standard polypropylene.
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