CapamaBlog
Introduction
In the label printing industry, rotary letterpress and screen printing are the two most widely used processes. When choosing equipment, most customers face one core question: Should I go with rotary letterpress or screen printing?
There is no universal "better"—only "more suitable." This article provides a comprehensive comparison to help you make the right decision.
1. Technical Principle Differences
1.1 Rotary Letterpress Principle
Rotary letterpress uses raised image areas on printing plates to transfer ink. The image areas are higher than the non-image areas, and ink is transferred to the substrate through pressure.
Technical Characteristics: - Plate: Photopolymer resin plate - Transfer: Direct impression - Drying: UV curing and hot air - Suitable Screen Ruling: 150-200 lpi
1.2 Screen Printing Principle
Screen printing uses a mesh screen to transfer ink. Image areas have open mesh, non-image areas are blocked, and a squeegee forces ink through the mesh onto the substrate.
Technical Characteristics: - Screen: Polyester or stainless steel mesh - Transfer: Squeegee pressure through mesh - Drying: UV curing and hot air - Suitable Screen Ruling: 60-120 lpi
1.3 Core Differences Summary
| Comparison | Rotary Letterpress | Screen Printing |
|---|---|---|
| Principle | Raised plate impression | Mesh ink transfer |
| Ink Layer Thickness | 5-10μm | 15-100μm (5-10x letterpress) |
| Registration Accuracy | ±0.1mm | ±0.15mm |
| Dot Reproduction | 1%-98% | 5%-95% |
| Minimum Text | 4pt readable | 6pt readable |
2. Application Scenarios
2.1 Where Rotary Letterpress Excels
✅ High-volume label production - Fast-moving consumer goods labels - Daily output >10,000 sheets - Speed advantage equals lower per-unit cost
✅ Fine text and lines - Pharmaceutical label instructions (high clarity small text) - Fine line patterns and micro QR codes - Multi-color labels requiring precision registration
✅ Standardized labels - Consistent design, repeat orders - Same label produced for days or weeks - Low changeover frequency
2.2 Where Screen Printing Excels
✅ Thick ink layer effects - White ink underpinning (unique screen printing advantage) - Back-printing on transparent materials (screen printing is the only feasible option) - Labels requiring tactile effect
✅ Special materials - Film substrates (PE, PP, PET) - Low surface energy materials - Uneven or textured surfaces
✅ Short runs and special effects - Screen + foil stamping combination - Electronic product labels - Durable industrial labels
2.3 Industry Fit
| Industry | Recommended Process | Reason |
|---|---|---|
| Food Labels | Rotary Letterpress | High volume, 4-6 colors, fast |
| Cosmetics/FMCG | Rotary Letterpress | Standardized, vibrant colors, low cost |
| Electronics | Screen Printing | Special materials, thick ink layer |
| Cosmetics (Premium) | Screen Printing | White base, special effects |
| Pharmaceutical | Rotary Letterpress | Small text clarity, precision |
| Industrial Labels | Screen Printing | Durability, material variety |
| Security Labels | Screen Printing | Special inks, thick layers |
3. Cost Structure Comparison
3.1 Initial Investment
| Equipment | Price Range | Suitable Scale |
|---|---|---|
| Rotary Letterpress CPM270L | ¥500K-800K | Medium to large volume |
| Roll-to-Roll Screen Printer RR-320S | ¥200K-600K | Small to medium volume |
| Roll-to-Roll Screen Printer RR-520S | ¥600K-1.25M | Large format |
Note: Screen printers have a lower entry barrier, but high-end wide-format models cost more.
3.2 Plate/Screen Costs
| Item | Rotary Letterpress | Screen Printing |
|---|---|---|
| Per-color plate cost | ¥50-150 | ¥30-80 |
| Plate/screen preparation | 1-2 hours | 0.5-1 hour |
| Plate/screen life | 500K-1M impressions | 10K-50K impressions |
| Changeover cost | Medium | Low |
3.3 Monthly Operating Costs (Estimated)
| Cost Item | CPM270L | RR-520S | Notes |
|---|---|---|---|
| Electricity | ¥3,000-5,000 | ¥2,000-3,500 | Screen slightly lower |
| Ink & Consumables | ¥8,000-15,000 | ¥6,000-12,000 | Screen mesh has shorter life |
| Labor | ¥6,000-10,000 | ¥5,000-8,000 | Similar complexity |
| Maintenance | ¥1,000-2,000 | ¥500-1,500 | Screen simpler structure |
| Monthly Total | ¥18K-32K | ¥13.5K-25K | Screen slightly lower overall |
3.4 ROI Case Study
Scenario: Medium-sized label printer, 150,000 labels/month
| Metric | CPM270L Plan | RR-520S Plan |
|---|---|---|
| Equipment Investment | ¥600K | ¥800K |
| Monthly Cost | ¥25K | ¥20K |
| Cost Per Label | ¥0.17 | ¥0.13 |
| Monthly Profit (¥0.50/unit) | ¥50K | ¥55K |
| Payback Period | 12 months | 14.5 months |
| Annual Net Profit | ¥600K | ¥660K |
Analysis: While CPM270L pays back faster, RR-520S offers unique advantages in wide-format and special materials.
4. Comprehensive Decision Matrix
| Decision Factor | Letterpress Weight | Screen Weight | Your Score (1-5) |
|---|---|---|---|
| High volume (>10K/day) | ★★★★★ | ★★★ | |
| Fine detail printing | ★★★★★ | ★★ | |
| Thick ink/white base | ★★ | ★★★★★ | |
| Material diversity | ★★★ | ★★★★★ | |
| Short-run quick response | ★★ | ★★★★ | |
| Lower investment threshold | ★★★ | ★★★★ | |
| Operational flexibility | ★★★ | ★★★★ |
Scoring: Rate each factor based on your needs (1-5), multiply by star count (weight), and add up. Higher score = better fit.
5. CAPAMA Recommended Solutions
Plan A: Rotary Letterpress Primary
Best for: High-volume food/FMCG label printers Recommended: CPM270L Rotary Letterpress Complement: Add ZH-CW65 digital die-cutter for short runs
Plan B: Screen Printing Primary
Best for: Specialty material / short-run / high-variety printers Recommended: RR-520S Roll-to-Roll Screen Printer Complement: Add TJ-350 screen & foil stamping machine
Plan C: Combination (Optimal)
Best for: Comprehensive label printers handling diverse orders Recommended: CPM270L + RR-320S Advantage: Letterpress for volume, screen for special orders—full coverage
6. Common Misconceptions
❌ "Screen printing is outdated"
Screen printing is irreplaceable for specialty materials, thick ink layers, and white underpinning. Demand is growing steadily in electronics, cosmetics, and industrial labels.
❌ "Rotary letterpress is less precise than screen printing"
In reality, rotary letterpress outperforms screen printing in fine text and dot reproduction. Screen printing's advantage lies in ink layer thickness, not precision.
❌ "Higher price means better equipment"
Choose equipment based on actual production needs, not price alone. The right fit matters more than the price tag.
Conclusion
Rotary letterpress and screen printing have complementary strengths—not a replacement relationship. CAPAMA manufactures both technologies, allowing us to provide unbiased recommendations.
Need a free consultation? Contact us: - Tel: +86-13761062128 - Email: info@capama.com - Showroom: Jiading District, Shanghai (by appointment)
About CAPAMA CAPAMA (Shanghai) Machinery Co., Ltd., 20+ years specializing in label printing equipment R&D and manufacturing. Main products: Rotary Letterpress, Roll-to-Roll Screen Printers, Digital Die-Cutting Machines, Multi-Layer Label Laminating Machines. CE certified, serving 500+ customers worldwide.