Intelligent Food Packaging Line Retrofit: From 12 to 3 People per Shift

In February 2026, Shunxiang Central Kitchen completed an intelligent packaging line upgrade for a food processing enterprise in Shandong Province. The retrofit delivered a 300% increase in production capacity, a 75% reduction in labor requirements, and a payback period of just 14 months.

## Retrofit Background

The original packaging line relied heavily on manual labor, facing three critical pain points:
1. **Throughput Bottleneck**: A daily packaging capacity of only 5,000 bags — unable to meet growing order volumes
2. **Quality Inconsistency**: Monthly seal-failure complaint rate averaging 3.2%
3. **Labor Shortage**: A 12-person-per-shift configuration chronically understaffed

## Retrofit Solution

### Phase 1: Semi-Automation (Months 1–2)
- Deployed 2 Shunxiang 600-series benchtop vacuum packaging machines
- Added 1 heat shrink machine (Model SHR-4522)
- Upgraded the conveyor belt system

### Phase 2: Full Automation (Months 3–4)
- Integrated an automatic weighing and filling machine
- Added an automatic labeling machine
- Incorporated a metal detection and rejection system

## Retrofit Results

| Metric | Before | After | Improvement |
|--------|--------|-------|-------------|
| Daily Capacity | 5,000 bags | 20,000 bags | **+300%** |
| Labor | 12 persons/shift | 3 persons/shift | **−75%** |
| Waste Rate | 3.5% | 0.8% | **−77%** |
| Packaging Cost | ¥0.35/bag | ¥0.12/bag | **−66%** |
| Seal Pass Rate | 96.8% | 99.6% | **+2.8%** |

## Return on Investment

- Total Investment: ¥320,000
- Annual Labor Savings: ¥270,000
- Annual Packaging Material Savings: ¥80,000
- **Payback Period: 14 months**

> Complimentary packaging line retrofit assessment available upon request