Three-Color Steamed Buns Packaging System | Dual-Mode Weighing & Packaging Line for Frozen Pastries

Tailor-made for frozen food factories, supporting both three-color cereal bag combination packaging and single-spec steamed bun/flower roll packaging

Industry Pain Points We Solve

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• ·Manual sorting and combination of three-color cereal bags leads to severe weight inconsistency, color ratio imbalance, and high product giveaway, damaging brand reputation and increasing production costs

• ·Fragile frozen steamed buns/flower rolls suffer high breakage rate during rigid conveying and weighing,

• reducing finished product yield and appearance quality

• ·Single-function packaging lines cannot meet dual production demands of mixed three-color bags and single-spec pastries, requiring multiple equipment investments and occupying excessive workshop space

• ·Unstable material feeding causes weighing jams and frequent downtime, resulting in low overall equipment efficiency (OEE) and delayed delivery

• ·Non-food-grade equipment design and open conveying process bring cross-contamination risks, failing to meet FDA, BRC, HACCP and other global food safety standards

• ·Lack of temporary storage and diversion functions leads to material accumulation and waste, further increasing production costs

• ·Manual weighing and packaging rely heavily on labor, leading to high labor costs, low efficiency and frequent human error

Core Customer Requirements We Meet

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• ·Dual-mode production capability to support both three-color cereal bag combination weighing and single-spec steamed bun/flower roll packaging

• ·High-precision combination weighing to ensure consistent total weight and color ratio of three-color cereal bags

• ·Gentle conveying and weighing design to minimize breakage of frozen pastries and maintain product integrity

• ·Compact integrated layout to save workshop space and reduce equipment investment costs

• ·Food-grade material and sanitary structure design, fully compliant with global food safety regulations for frozen food

• ·Flexible material diversion and temporary storage functions to avoid accumulation and ensure stable production flow

• ·Easy operation and quick mode switching, adapting to multi-SKU production demands

• ·Stable continuous operation with low failure rate and easy maintenance

Our Tailored Integrated Solution

We provide a fully automatic, dual-mode Three-Color Steamed Buns Packaging System, exclusively designed for frozen pastry manufacturers. This integrated line seamlessly combines high-precision combination weighing, gentle inclined conveying, intelligent material diversion, temporary storage and dual-mode production switching, perfectly solving core pain points of mixed and single-spec frozen pastry packaging. The whole line adopts food-grade SUS 304 stainless steel design, realizing semi-automated production from frozen material feeding to discharging for manual bagging, ensuring every product meets your strict quality requirements and global food safety standards.

Core System Units

1. ·14-Head Mixing Multihead Weigher (3 Units for Three-Color Combination)

   The core weighing unit for three-color cereal bag combination packaging, with 3 sets of weighers (A/B/C) working in synergy. Weighers A and C first complete independent quantitative weighing, then transmit data to weigher B. Weigher B adjusts the weight of color B based on A and C’s total weight, ensuring the sum of three colors reaches the target weight range. The food-grade contact parts and gentle weighing design avoid material damage and cross-contamination.
2. ·14-Head Multihead Weigher (1 Unit for Single-Spec Packaging)

   Specialized weighing unit for frozen steamed buns/flower rolls, with high-precision combination weighing function to ensure consistent weight of single-spec products. The optimized hopper design prevents frozen pastries from sticking and breaking, maintaining product appearance integrity.
3. ·420/600/700 Inclined Conveyors

   Three types of food-grade inclined conveyors with non-slip belts, tailored for different material conveying needs. The adjustable inclination angle ensures gentle, stable and damage-free transportation of frozen cereal bags and pastries, avoiding slipping and breakage during lifting and conveying.
4. ·Temporary Storage Bin

   Food-grade storage unit to buffer materials between conveying and weighing processes, preventing material accumulation and ensuring stable feeding to the weigher. It features an open structure for easy cleaning and disinfection, with no sanitary dead corners.
5. ·Diversion Conveyor

   Intelligent material diversion unit with automatic identification function, which sorts three-color frozen cereal bags and single-spec steamed buns/flower rolls into corresponding conveying lines. It supports quick mode switching between mixed and single-spec production, maximizing production flexibility.

Standard Automated Workflow

Mode 1: Three-Color Cereal Bag Packaging

1. ·Material Feeding & Diversion: Frozen three-color (A/B/C) cereal bags are transported to the diversion conveyor via the climbing conveyor. The conveyor identifies and diverts the three colors into the silos of ABC slot elevators respectively.

2. ·Synchronized Lifting & Combination Weighing: The three ABC elevators operate simultaneously, lifting materials into the upper hoppers of three 14-head mixing multihead weighers. Weighers A and C complete quantitative weighing first, then send data to weigher B. Weigher B adjusts the weight of color B to ensure the total weight of A+B+C meets the target range.

3. ·Discharging & Manual Packaging: The combined three-color cereal bags are discharged through the chute. Workers perform manual bagging and sealing to complete the packaging process.

Mode 2: Steamed Buns/Flower Rolls Packaging

1. ·Material Feeding & Diversion: Frozen steamed buns/flower rolls are transported to the diversion conveyor, which directs them to the large-angle elevator D of the 14-head combination weigher.

2. ·Lifting & Precision Weighing: Elevator D lifts the materials into the silo of the 14-head multihead weigher. The weigher completes high-precision combination weighing, and the qualified weighing hoppers wait for discharging.

3. ·Discharging & Manual Packaging: The weighed steamed buns/flower rolls are discharged through the chute. Workers perform manual bagging and sealing to finish the production cycle.

Proven Results & Core Business Benefits

• ·100% Weight & Ratio Consistency: Three-set 14-head mixing weighers achieve ±0.5g weighing accuracy, ensuring consistent total weight and color ratio of three-color cereal bags, reducing customer complaints by 99% and enhancing brand reputation

• ·Dual-Mode Production Flexibility: One line supports both mixed three-color and single-spec packaging, eliminating the need for multiple equipment investments and saving 40% of workshop space

• ·Ultra-Low Product Breakage Rate: Gentle inclined conveying and optimized weigher design reduce breakage rate of frozen pastries by over 90%, greatly improving finished product yield and appearance quality

• ·Full Global Regulatory Compliance: All product-contact parts adopt food-grade SUS 304 stainless steel with no sanitary dead corners, fully meeting FDA, BRC, HACCP and other international food safety standards, supporting smooth product export

• ·30% Efficiency Improvement: Semi-automated integrated production cuts manual labor by 70%, reduces weighing downtime by 85%, and improves overall production efficiency by 30%

• ·Cost Saving & Waste Reduction: Temporary storage and diversion functions eliminate material accumulation and waste, reducing raw material loss by 25% and lowering production costs significantly

• ·Quick Mode Switching: Tool-free dual-mode switching can be completed within 10 minutes, perfectly adapting to multi-SKU production demands of frozen pastries