Motek introduces dedicated blow mold solutions for nine-leg blow-molded plastic pallets. The nine-leg blow-molded pallet features a flat top deck supported by nine legs underneath, formed through the hollow blow molding process. It combines lightweight construction, high impact resistance, and convenient four-way/two-way forklift entry, making it widely used in warehousing logistics, cold-chain transportation, racking storage, and export turnover scenarios. Compared with injection-molded nine-leg pallet molds, the core challenges of blow molds lie in wall thickness uniformity control of the hollow structure, blow-forming precision of the nine support legs, and the parting line treatment and cooling efficiency unique to the blow molding process. Motek configures dedicated solutions around the cavity layout, cooling system, and blow pin positions of blow molds, helping customers achieve stable mass production of nine-leg blow-molded pallets.
| Item | Specification |
|---|---|
| Applicable Plastics | HDPE (High-Density Polyethylene, preferred for blow-molded pallets, low-temperature resistant, impact-resistant) |
| Mold Material | P20 / 718H (pre-hardened steel) for cavity and core; surface hardness up to HV800–1000 after nitriding treatment |
| Number of Cavities | 1×1 (single cavity for large blow-molded pallets) |
| Mold Life | 300,000–800,000 shots (depending on steel selection and maintenance) |
| Molding Process | Hollow blow molding (extrusion blow molding), parison inflation forming |
| Cycle Time | Depends on pallet size and cooling design; blow-molded pallets typically require longer cycles |
| Mold Base Standard | Customized according to customer blow molding machine model |
| Cooling System | Circulating water channels + dedicated cooling layout for blow molds |
| Demolding Method | Mold opens for removal, coordinated with demolding mechanisms |
Wall Thickness Uniformity Control for Hollow Structures.
The core advantage of nine-leg blow-molded pallets lies in the lightweight and impact-resistant properties provided by the hollow structure. Wall thickness uniformity directly affects the pallet's load-bearing strength and service life. Motek optimizes parison dimensions and blow ratios based on the support leg distribution and deck structure of nine-leg pallets, ensuring the melt is evenly distributed across the nine legs and deck area during inflation. Industry experience shows that the wall thickness in the support leg areas of blow-molded pallets must be controlled within a reasonable range based on load-bearing requirements to ensure structural strength during rack storage.
Blow-Forming Precision of the Nine Support Legs.
The nine support legs are critical for load-bearing, and their shape, dimensions, distribution, and spacing must be precisely guaranteed in the mold design. Motek performs precision machining on the nine leg cavities, ensuring consistent leg height and flat bottoms, so that all nine legs contact the ground simultaneously without wobbling. In the blow molding process, material thickness in the leg areas must be ensured through coordinated control of parison volume and inflation parameters, avoiding insufficient load-bearing capacity from overly thin legs or material waste from overly thick legs.
Parting Line Treatment and Appearance Quality of Blow Molds.
Blow molding produces parting lines (flash) at the mold parting surfaces, affecting the pallet's appearance and usability. Motek performs precision matching machining on parting surfaces, positioning parting lines on non-appearance or non-contact areas wherever possible to reduce subsequent processing. For pallets with higher appearance requirements, parting surface matching precision must be controlled within tight tolerances to ensure thin, easily trimmed parting lines.
Cooling Efficiency and Cycle Time Optimization.
Cooling time accounts for the major portion of the blow molding cycle for pallets. Motek designs circulating cooling water channels in cavities and cores, focusing on the nine support leg areas and thick-wall deck regions. The cooling layout of blow molds must balance cooling uniformity with mold rigidity, avoiding pallet warpage or leg deformation caused by uneven cooling. In industry solutions, cooling channel diameters and layouts are optimized to effectively shorten cycle times.
Blow Pin Position and Air Intake System Design.
The blow molding process injects compressed air into the parison through blow pins to conform the material to the mold walls. Motek reasonably selects blow pin positions (typically at the pallet center or non-appearance areas) based on the structural characteristics of nine-leg pallets, ensuring even air distribution to the nine legs and deck corners. Blow pin positions must avoid appearance surfaces and critical load-bearing areas while facilitating subsequent trimming.
Load-Bearing and Impact-Resistant Design of the Nine-Leg Structure.
Blow-molded pallets absorb impact energy through their hollow structure, making them suitable for cold-chain and logistics scenarios. Motek coordinates with product structure in mold design, ensuring sufficient material thickness at leg-to-deck connection areas to enhance connection strength. The nine-leg layout distributes loads across nine contact points, resulting in lower per-point loads compared to four-leg structures—ideal for warehousing scenarios requiring distributed load-bearing.
Motek supports customizing nine-leg blow-molded pallet molds for various sizes, load capacities, and self-weights. Below are common production models compiled from the specification list. Motek can provide dedicated mold design and development for all the following specifications:
| Pallet Size (mm) | Color | Reference Self-Weight (kg) | Application & Features |
|---|---|---|---|
| 1000×1000×140 | Blue | 7.5 | Lightweight, suitable for light-duty turnover and export |
| 1200×1000×140 | Blue | 7.5 / 8.5 | Standard light-duty, suitable for general warehousing and flat-ground turnover |
| 1200×1000×150 | Blue | 10 / 13 | Standard load-bearing, suitable for racking and logistics stacking |
| 1100×1100×150 | Blue | 10 | Fits square spaces, four-way entry |
| 1100×900×150 | Blue | Custom | Smaller size, suitable for narrow aisles or specific equipment |
| 1200×1200×150 | Blue | 14 | High load-bearing, suitable for heavy cargo stacking |
| 1300×1100×150 | Blue | 13 | Enlarged size, increasing single-load capacity |
| 1400×1000×150 | Blue | Custom | Extended length, suitable for long cargo |
| 2400×850×150 | Blue | Custom | Extra-long, dedicated for special industries (e.g., building materials, pipes) |
| 1690×1010×150 | Black | 18 | Black light-blocking, heavy load-bearing |
| 1970×1010×150 | Black | 20 | Extra-heavy duty, suitable for high-intensity logistics and industrial scenarios |
Note: Specifications of the same size but different self-weights typically correspond to different wall thickness designs and internal reinforcement structures. Motek will customize the mold design based on your specific dynamic/static load requirements during the design phase.
Motek plastic pallet forklift nine-leg blow-molded warehouse pallet molds are suitable for:
After the customer provides 3D product drawings, load requirements (dynamic/static/rack load), specific size specifications (refer to the list above), blow molding machine model, and target output, Motek completes blow molding simulation (including parison size evaluation, wall thickness distribution prediction, and cooling optimization) and mold structure confirmation; cavity steel is selected per blow molding process requirements (P20/718H, nitrided); progress and key milestones are regularly reported during processing. During trial molding, Motek cooperates with the customer's blow molding machine for parison adjustment, inflation parameter optimization, and wall thickness inspection, with emphasis on verifying nine-leg forming completeness, wall thickness uniformity, parting line quality, and pallet flatness. Before shipment, molds undergo anti-rust treatment and action testing, with water circuit diagrams, consumable parts lists, and blow molding process parameter recommendations provided. Technical support is available during the warranty period, with lifetime maintenance consultation.













Motek — From injection-molded nine-leg pallets to blow-molded nine-leg warehouse pallets, supporting full-size series customization, providing reliable mold solutions for blow molding of logistics and warehousing plastic pallets.