When Should A Fulfillment Center Use Tray Forming? Operational Guidance And Cost Drivers

Tray Forming Forming a flat corrugated or paperboard blank into a tray used for packaging, shipping, or retail display. Fulfillment centers must decide when to invest in forming capabilities versus buying pre-formed trays; the right choice depends on volume, SKU variability, storage constraints, and retailer requirements.

Tray forming in-house gives control over timing, customization, and packaging inventory. It reduces the need to store multiple pre-formed SKUs and supports just-in-time operations. However, forming requires capital equipment, trained staff, and program management for blank inventories, adhesives, and maintenance schedules.

Key Decision Factors

Consider these operational and business factors when evaluating tray forming:

• Volume Thresholds: High or consistent daily volumes often justify automation; low volumes may be better handled with manual forming or outsourced pre-formed trays.
• SKU Mix: Wide variety increases value of on-demand forming to avoid stocking many pre-formed SKUs.
• Retail Requirements: Retail-ready trays with graphics or specific strength often need forming capabilities closely tied to printing and finishing.
• Space Constraints: Forming on demand reduces floor space required for prebuilt tray storage but needs manufacturing space and adhesives staging.

Cost Drivers To Model

When building a cost model, include:

• Capital Cost: Purchase price of erectors, folder-gluers, conveyors, and integration controls.
• Operating Cost: Labor for operators and maintenance, adhesive and consumables, energy use, and wear parts.
• Inventory Carrying: Reduced costs from fewer pre-formed trays versus increased raw blank inventory and adhesive stock.
• Changeover Time: Downtime and scrap during SKU changes—design blanks to minimize tooling time.

Operational Best Practices

Implementing tray forming effectively requires cross-functional planning:

• Standardize blank families: Use modular blank designs to reduce tooling and simplify changeovers.
• Integrate with WMS/PLC: Automate recipe selection for glue levels, forming speed, and labeling based on SKU scanned by the WMS.
• Train maintenance staff: Preventive maintenance on glue systems and feed mechanisms reduces unplanned downtime.
• Run trials: Validate handling, product fit, and stacking behavior under real pack conditions before full deployment.

Risk Management

Manage the primary risks by:

• Supplier backups: Keep qualified secondary suppliers for blanks and adhesives to avoid supply interruptions.
• Spares and SLAs: Stock critical spare parts and secure service-level agreements for vendor support.
• Quality control: Implement in-line checks for crease depth, glue placement, and joint integrity to reduce field failures.

Practical Example

An omnichannel fulfillment center serving a national grocer used to buy pre-formed printed trays for seasonal promotions. High storage costs and variable demand created waste. After investing in a semi-automatic folder-gluer and an inline digital labeler, the center formed trays on demand, reduced obsolete inventory, and achieved faster promotional turnarounds, improving margin despite the equipment lease cost.

Implementation Checklist

• Assess volumes and SKU volatility: Run a six-month volume analysis to determine break-even for automation.
• Pilot the most common SKU: Validate cycle times, quality, and handling.
• Plan for integration: Ensure PLC/WMS connectivity and recipe management for fast changeover.
• Budget for spares and training: Include first-year maintenance and operator training costs in ROI calculations.

In short, the Tray Forming decision hinges on volumes, SKU mix, and space. In-house forming reduces inventory and increases flexibility for retail-ready and promotional packaging, but requires capital, trained personnel, and supplier planning. Use a pilot and a clear cost model to decide whether to form trays internally or continue sourcing pre-formed units.