Secondary Packaging Conveyor Systems
Case packing, shrink wrapping, and palletizing operations prepare packaged products for shipping and distribution. Custom Conveyor & Equipment Corporation engineers material handling systems for secondary packaging lines providing reliable product flow from primary packaging through final unitization ready for loading onto transport vehicles.
Material Handling Requirements in Secondary Packaging
Secondary packaging consolidates individually packaged products into shipping units—cases, shrink-wrapped bundles, or palletized loads. This consolidation protects products during transportation, enables efficient material handling throughout distribution channels, and creates retail-ready display units. Conveyor systems must coordinate product flow from high-speed primary packaging through lower-speed consolidation operations maintaining overall line efficiency.
Material flow challenges in secondary packaging include accumulation buffering between operations with different cycle times, product orientation for automated case loading, proper product spacing for wrapping equipment, and stable layer formation for palletizing systems. These requirements demand coordinated conveyor designs rather than simple product transport from point to point.
Speed Differential Management
Primary packaging lines often operate faster than secondary packaging equipment. A filling line producing 300 bottles per minute feeds case packers consolidating products into twelve-unit cases at only 25 cases per minute. Conveyors must buffer this speed differential without creating production bottlenecks or forcing primary packaging slowdowns reducing overall line output.
We design accumulation conveyors between primary and secondary packaging providing adequate buffer capacity. Zero-pressure accumulation maintains product spacing preventing crushing or container damage during temporary storage. Control systems monitor accumulation levels automatically adjusting primary packaging speed if buffer capacity approaches limits. Properly sized accumulation enables maximum primary packaging utilization while preventing secondary packaging overload.
Product Grouping and Lane Formation
Case packing equipment requires products arriving in specific patterns—groups of four, six, twelve, or other counts matching case configurations. Products must be arranged in proper lanes enabling automated loading into cases. Lane formation and product grouping occur on conveyors upstream of case packers through mechanical guides, diverters, or timing mechanisms.
Custom Conveyor designs lane formation conveyors using adjustable guides accommodating different product sizes. Timing screws or star wheels meter products into specified groupings. Lane dividers separate product streams creating multi-lane patterns. Vision systems verify correct product grouping triggering reject mechanisms removing improper patterns before reaching case packing equipment where they would cause operational problems.
Case Packer Feed Conveyor Systems
Case packing machines place products into corrugated cases using robotic pick-and-place systems, drop packers, or horizontal load mechanisms. Conveyors must deliver products with precise spacing and proper orientation enabling reliable automated loading. Product damage during conveying defeats quality objectives of protective secondary packaging.
We engineer case packer feed conveyors with gentle handling characteristics preventing product damage. Belt surfaces provide cushioned support. Transfer mechanisms use smooth geometry minimizing drop heights. Product guides maintain orientation without excessive contact forces potentially crushing containers or shifting contents. Speed synchronization between conveyors and case packers prevents product gaps or compression at loading stations.
Case discharge conveyors remove filled cases from packing machines transporting to downstream closing and sealing operations. Weight and size increase substantially compared to individual products requiring adequate conveyor capacity. Drive systems are sized for heavy loaded cases rather than light empty case weights. Structural frameworks support concentrated loads without excessive deflection.
Shrink Wrap and Bundle Packaging Material Flow
Shrink wrapping consolidates products using heat-shrinkable film creating multi-packs or bundled units. Products must arrive with proper spacing enabling film application without interference. Film application may occur while products move or require stationary positioning during wrapping operations. Wrapped products exit requiring cooling time before handling prevents film damage or bundle distortion.
Shrink wrap conveyors coordinate product flow with film application and heat shrink tunnel operation. Product spacing mechanisms maintain intervals between bundles enabling reliable film cutting and sealing. Multi-pack formation occurs on conveyors grouping individual products before film application. Lane formation creates proper bundle patterns for retail display or distribution requirements.
Heat shrink tunnel conveyors withstand elevated temperatures in shrink chambers where film tightens around products. Heat-resistant belt materials maintain tensile strength and dimensional stability in tunnel environments. Drive components are positioned outside heated zones where practical. Product support during shrinking prevents bundle collapse or film wrinkles creating unacceptable appearance.
Post-shrink cooling conveyors provide residence time allowing film and product temperature reduction before downstream handling. Extended conveyor length or reduced belt speed increases cooling duration. Adequate cooling prevents film damage from subsequent product contact or handling operations. Temperature monitoring verifies products reach acceptable temperatures before advancing to palletizing or case loading operations.
Palletizer Infeed Material Handling
Palletizing systems stack cases or bundles onto pallets creating unitized loads for efficient material handling through distribution systems. Products must arrive with proper spacing, orientation, and stability enabling automated layer formation and stacking operations. Damaged or unstable products cause palletizer jams or create unsafe pallet loads prone to collapse during transportation or storage.
Palletizer infeed conveyors deliver products with consistent spacing matching palletizer cycle times. Orientation devices rotate cases presenting proper faces for load pattern formation. Squaring mechanisms align cases ensuring uniform dimensions across pallet layers. Product inspection systems reject damaged cases preventing introduction of defective units into pallet loads where they compromise overall load stability.
Layer formation occurs on specialized conveyors or within palletizer mechanisms grouping cases into configurations for placement onto pallets. Row forming, column formation, or matrix patterns are created matching customer pallet specifications or optimizing trailer loading efficiency. Proper layer formation maximizes pallet cube utilization and creates stable loads surviving distribution handling.
Finished pallet discharge conveyors remove completed loads from palletizing areas transporting to stretch wrapping, strapping, or warehouse storage. Conveyors must support substantial pallet loads—often exceeding one ton—without deflection causing pallet instability. Low-friction surfaces enable smooth pallet movement. Powered roller or chain construction provides positive product advance without requiring external push forces.
Empty Case Supply and Return Conveyors
Case packing operations require steady supply of empty corrugated cases feeding to packing machinery. Cases arrive collapsed from suppliers requiring erecting before product loading. Case erectors form flat blanks into open cases. Conveyors transport erected cases to case packers maintaining adequate supply supporting continuous packer operation without interruption from case shortages.
We design case supply conveyors with capacity exceeding case packer consumption rates providing buffer margin preventing case shortages during brief supply interruptions. Storage capacity on conveyors enables accumulation of erected cases buffering between case erector output and packer demand. Controls monitor case supply levels alerting operators before depletion forces packer shutdown.
Some operations use returnable containers requiring empty container return to filling areas. Return conveyors transport empty totes, bins, or cases from packaging areas back to production or filling operations. Conveyors may incorporate cleaning systems washing containers before reuse. Return flow capacity must match forward container consumption preventing accumulation of empty containers at packaging areas.
Complete Packaging Line Coordination
Secondary packaging systems often integrate equipment from multiple manufacturers—case packers from one supplier, shrink wrappers from another, palletizers from third vendors. Conveyors provide mechanical linkage between these diverse equipment types while controls coordinate operation throughout complete packaging lines.
Custom Conveyor works with packaging equipment suppliers coordinating conveyor specifications with machine requirements. Interface dimensions are verified ensuring proper fit at equipment connection points. Conveyor heights match equipment infeed and discharge elevations. Control interfaces provide communication between conveyors and packaging machinery coordinating material flow throughout production lines.
Startup support includes commissioning coordination with packaging equipment installation. Timing parameters are adjusted achieving optimal throughput throughout complete lines. Training covers conveyor operation, routine maintenance, and troubleshooting procedures. This support ensures reliable operation throughout packaging system service life.
Reliable Operation in Packaging Environments
Secondary packaging operations often run extended shifts supporting high-volume production requirements. Conveyor reliability is essential preventing packaging line stoppages disrupting overall manufacturing operations. Component selections and maintenance provisions must support sustained operation with minimal unplanned downtime.
We specify packaging conveyor components emphasizing proven reliability. Industrial-grade motors and reducers provide long service life under continuous operation. Sealed bearings resist contamination from packaging environment dust and debris. Belts and chains include appropriate safety factors extending replacement intervals. Conservative capacity sizing prevents operation at thermal limits where component failures accelerate.
Maintenance accessibility enables routine service without extensive production interruption. Modular construction allows section replacement minimizing downtime when component renewal becomes necessary. Spare parts for critical components enable rapid restoration of operation following unexpected failures. Preventive maintenance schedules address component service before failures occur.
Engineering and Manufacturing Capabilities
Custom Conveyor & Equipment Corporation has designed and built packaging conveyors from our Cedar Rapids, Iowa facility since 1984. Our engineering team understands secondary packaging requirements and can develop conveyor solutions coordinating with case packers, shrink wrappers, and palletizing systems.
Fabrication capabilities include 3kW fiber laser cutting and 300-ton press brake forming producing components for packaging conveyor construction. Welding across carbon steel, stainless steel, and aluminum supports material selection appropriate for various packaging environments. Manufacturing capacity from 6 grams to 6 tons per unit enables fabrication of all components required for secondary packaging conveyor systems.
Project support includes detailed engineering analysis of packaging line requirements, product characteristics, and equipment integration needs. Documentation packages support installation, operation, and maintenance throughout conveyor service life. Our team can coordinate with packaging equipment suppliers ensuring compatible operation throughout complete production lines.
Secondary Packaging Conveyor Solutions
Custom Conveyor & Equipment Corporation engineers material handling systems for case packing, shrink wrapping, and palletizing operations. Our team can evaluate your secondary packaging requirements and develop conveyor solutions supporting efficient product consolidation and preparation for shipping.
Contact our Cedar Rapids facility at (319) 449-3322 or visit /contact/ to discuss secondary packaging conveyor needs.
