TH-828 Chiller

What the TH-828 Chiller Does in a Footwear Production Line

The TH-828 Chiller is a refrigeration-based shoe cooling machine that rapidly reduces the temperature of freshly formed shoe uppers and bottoms — bringing them down to as low as -15°C within the same production cycle. Without a dedicated chilling stage, residual heat from steam forming or bottom-press operations causes deformation during last removal, undermining the shape accuracy the forming step was meant to achieve. The TH-828 Chiller addresses this directly by passing the lasted shoe through a refrigerated conveyor tunnel, locking the formed shape before the last is removed and returning each last to the production line faster.

For footwear factories running paired last sets, a shorter last occupancy time directly determines how many pairs can complete a shift without expanding the last inventory. The TH-828 Chiller is positioned between the forming and last-extraction stages in a cemented construction footwear production line, functioning as the shape-stabilization step that makes consistent last cycling possible.

TH-828 Chiller Specifications: Three Conveyor Lengths

The TH-828 Chiller is available in 3.2M, 3.8M, and 4.2M conveyor length configurations. Each variant shares the same refrigeration standard while scaling output capacity to match different production volumes and shift targets.

All three TH-828 Chiller models operate on a 380V three-phase 50Hz electrical supply — the standard industrial voltage for footwear factory infrastructure in most manufacturing markets. Buyers planning installations in regions with non-standard voltages should confirm local electrical compatibility before finalizing the order. The 4.2M model draws 7 kW — approximately 75% more than the 3.2M variant — a difference that should be factored into the factory's electrical load planning when adding the TH-828 Chiller to an existing circuit.

Key Design Features of the TH-828 Chiller

The TH-828 Chiller incorporates specific design choices that translate directly into daily production reliability and output consistency.

• Double-Track Automatic Door: Built for continuous multi-shift use. The automatic door mechanism limits operator intervention at entry and exit points and maintains a stable interior temperature environment between conveyor passes.
• High-Grade Conveyor Belt: Manufactured from materials selected for extended service life under refrigeration conditions, reducing belt replacement frequency and associated line interruptions across the operating lifetime of the TH-828 Chiller.
• Automatic Defrosting Device: Prevents frost accumulation on cooling surfaces without requiring a manual shutdown-and-defrost sequence. This also limits moisture contact with shoe surfaces during the cooling pass, reducing the risk of mildew on processed uppers.
• German-Technology Compressor: The TH-828 Chiller's refrigeration circuit uses imported compressor components based on German engineering specifications. This delivers a fast cooldown — from ambient temperature to -15°C within a few minutes — with uniform temperature distribution across the full conveyor width during operation.
• Output-End Shoe Sensor: A sensor at the machine's exit point detects the presence of a shoe leaving the chilling tunnel, providing a basic safeguard against exit-end falls and the conveyor jams they cause.

Spec sheets for the TH-828 Chiller list temperature rating and power consumption, but what matters in a continuous production environment is whether temperature uniformity holds across a full eight-hour shift without climate control. The TH-828 Chiller is specified for uniform temperature distribution across the conveyor width, supporting consistent shape retention at both center and edge positions throughout the shift.

Application Scenarios for the TH-828 Chiller

The TH-828 Chiller is designed for three primary scenarios in footwear manufacturing operations:

• Post-Steam-Forming Cooling: After a steam forming or hot-press lasting cycle, the TH-828 Chiller brings the lasted upper to -15°C, locking the formed geometry and enabling immediate last removal rather than waiting for ambient temperature dissipation.
• Bottom Pressure Freeze Shaping: For shoe bottoms after high-pressure forming, the TH-828 Chiller fixes the compressed shape before the shoe advances to the next assembly step, shortening shape stabilization time and reducing work-in-process inventory held in ambient cooling queues.
• Multi-Shift High-Turnover Lines: In factories targeting 1,200 to 2,500 pairs per shift, the faster last cycle time enabled by the TH-828 Chiller allows a given last set to rotate more frequently — or allows the same output level to be sustained with fewer total lasts in circulation.

Selecting the right TH-828 Chiller model means matching the conveyor length to available floor space, not just to the rated output. The 4.2M model requires 4,500 mm of floor length plus infeed and outfeed clearance for operator access. A larger TH-828 Chiller with higher rated capacity may not be the right choice if the factory floor plan requires a routing workaround around fixed infrastructure — the handling time and ergonomic cost of that workaround can offset the rated capacity advantage within a single production season.

Procurement Checklist for the TH-828 Chiller

Factory owners specifying the TH-828 Chiller should confirm the following before selecting a model:

• Voltage Compatibility: Confirm 380V / 50Hz three-phase supply is available at the installation point before ordering any TH-828 Chiller variant.
• Capacity Match: Select the model whose rated output aligns with the current shift target. The step-up investment to a larger TH-828 Chiller variant is typically justified when the production line consistently operates at or above 80% of the smaller model's rated capacity.
• Floor Space: Verify that the installation area accommodates the machine length (2,500 / 3,200 / 4,500 mm for the respective models) plus operator clearance at both the infeed and outfeed ends.
• Spare Parts Access: For international buyers, confirm compressor component and conveyor belt lead times before purchase to minimize downtime risk after installation.

The TH-828 Chiller is designed for simple operation and easy maintenance, which supports faster operator onboarding and reduces skill-level dependency in facilities with high turnover. For footwear factories that have integrated steam forming or bottom-press operations and need a reliable cooling stage to complete the shape-locking cycle, the TH-828 Chiller is available in three documented production-scale variants to match line output and floor space requirements.