Flat-Top Chuan-Character Plastic Pallet Mold — Product Introduction (Motek Pallet Mold Series)
Flat-Top Chuan-Character Plastic Pallet Mold — Product Introduction (Motek Pallet Mold Series)
Product Positioning
Motek introduces dedicated injection molds for flat-top Chuan-character plastic pallets. The Chuan-character pallet features three longitudinal support runners on the bottom (resembling the Chinese character "川") paired with a flat top deck, combining four-way forklift entry convenience with flat-surface load-bearing capability—widely used in warehousing, logistics, racking, and export transport. Compared with grid Chuan-character or nine-leg pallet molds, the core challenges of flat-top Chuan-character pallet molds lie in damage-free demolding of the central longitudinal groove, balanced filling of the three longitudinal runners, and warpage control of the flat deck. Motek configures dedicated solutions around trapezoidal angled lifter demolding mechanisms, side core-pulling systems, and hot runner layout, helping customers achieve stable mass production of flat-top Chuan-character pallets.
Core Specifications
| Item | Specification |
|---|---|
| Applicable Plastics | HDPE / PP (high-rigidity grades; steel tubes can be embedded for enhanced rack load capacity) |
| Mold Material | P20 / 718H / 2738 (cavity and core); 1.2344ESR optional for high-volume production |
| Number of Cavities | 1×1 (single cavity for large pallets) |
| Mold Life | P20 configuration no less than 300,000 shots; 718 configuration no less than 500,000 shots |
| Cycle Time | Depending on pallet size and cooling design; hot runner solutions can effectively shorten cycles |
| Injection Machine | 800T–2250T (depending on pallet size) |
| Runner System | Hot runner (multi-point gates, balanced filling of three longitudinal runners and deck); single-layer pallets typically use 12-point hot runners |
| Ejection Method | Straight ejector pins + trapezoidal angled lifter mechanism (for central groove separation) |
Product Features
Trapezoidal Angled Lifter Demolding Design for the Central Groove.
A longitudinal groove forms between the left and right cavity sections of Chuan-character pallets. The straight parting line at this groove connects tightly with the lower mold plate, and ejection using straight ejector pins alone can easily cause scratching or deformation in the groove area. Referencing mature industry solutions, Motek arranges trapezoidal angled lifter structures between the left and right cavity sections: two lifter blocks with right-angle trapezoidal cross-sections cooperate with T-shaped support blocks. When the ejector rod fixing plate moves upward, the lifter blocks move apart along the inclined direction, applying lateral separation force to the groove area, causing the groove to detach from the lower mold plate before ejection—effectively preventing product damage.
Multi-Directional Side Core-Pulling for Forklift Openings.
Chuan-character pallets must meet four-way forklift entry requirements. Motek configures No. 1 side core-pulling components perpendicular to the left/right cavity dividing line (two units arranged vertically) and No. 2 side core-pulling components parallel to the dividing line on the lower mold plate, forming forklift openings in different directions respectively. The No. 1 translation driver drives the No. 1 core-pulling seat horizontally toward or away from the forming cavity, disengaging the core rod from the product before ejection, ensuring consistent forklift opening dimensions and smooth demolding.
Warpage Control and Cooling Optimization for the Flat Deck.
The Chuan-character pallet deck is a large flat surface where uneven cooling can easily cause warpage. Motek designs zoned cooling circuits covering the deck area and three longitudinal runner inserts separately, equalizing cooling rates between thick-wall runners and thin-wall deck. In reference industry solutions, cooling water pipes can be routed through the fixed plate to enhance central area heat dissipation. Mold flow analysis verifies shrinkage distribution across deck regions, applying pre-deformation compensation to the cavity. Proper fillet design is critical to pallet structural strength.
Steel Selection and Surface Treatment.
Flat-top Chuan-character pallet molds are medium-to-large molds. Motek references industry configurations: P20 (no less than 300,000 shots in normal use) or 718 (no less than 500,000 shots) for cavity and core. Steels undergo quenching and tempering to improve hardness, followed by nitriding treatment to achieve high surface hardness with minimal deformation at lower temperatures. Cooling systems are designed with circulating water circuits, balancing production efficiency with mold life. Needle valve hot runners combined with proper venting systems ensure smooth, flash-free pallets without uneven wall thickness.
Embedded Steel Tubes for Enhanced Rack Load Capacity.
Chuan-character pallets can have steel tubes inserted into the bottom longitudinal runners after molding to enhance rack load capacity. In industry patent solutions, embedded steel tubes not only form the plastic part surface but also rapidly cool the middle section of the plastic part through heat conduction, preventing deformation caused by excessive cooling rate differences. Motek reserves forming positions for steel tube installation channels in mold design, ensuring smooth insertion without affecting pallet appearance or stacking precision.
Mold Outer Dimensions Reference
The following table lists Chuan-character pallet mold parameters available from search materials for reference. Actual mold dimensions vary depending on product specifications, cavity count, and cooling system design. Motek provides customized solutions based on customer pallet 3D drawings and injection machine specifications.
| Product Specification / Notes | Mold Material / Configuration | Applicable Injection Machine | Source Type |
|---|---|---|---|
| 1210 Chuan-character PP pallet (1200×1000mm) | P20/718/718H/2738, etc. | Customized per product | Mold maker |
| Chuan-character pallet G1210R2 (1210×1000×160mm, dynamic load 1.5T/static load 6T) | P20/H13/718H/S136 | Customized per product | Mold maker |
Applications
Motek flat-top Chuan-character plastic pallet molds are suitable for:
- Flat-top Chuan-character single-face pallets for warehousing and logistics
- Chuan-character pallets for racking storage (steel tubes can be embedded for enhanced load capacity)
- Flat-top Chuan-character plastic pallets for export transport
- Standard four-way entry Chuan-character pallets (1200×1000mm, 1200×800mm, etc.)
- Warehousing pallets for pharmaceutical/food/glass industries
Service Process
After the customer provides 3D product drawings, load requirements (dynamic/static/rack load), and target output, Motek completes mold flow analysis (including three longitudinal runner filling evaluation, deck warpage prediction, and cooling optimization) and mold structure confirmation; cavity steel and hot runner systems are procured according to agreed specifications; progress and key milestones are regularly reported during processing. During trial molding, emphasis is placed on verifying central groove demolding smoothness, forklift opening dimensional accuracy, deck flatness, and load-bearing performance, with samples and inspection reports provided. Before shipment, molds undergo anti-rust treatment and action testing, with water circuit diagrams, hot runner wiring diagrams, consumable parts lists, and maintenance instructions provided. Technical support is available during the warranty period, with lifetime maintenance consultation.
Motek — From flat-top Chuan-character pallets to grid nine-leg pallets, providing reliable mold solutions for injection molding of logistics and warehousing plastic pallets.
