Choosing the right ink system for roll stock film printing is a technical decision that affects product quality, regulatory compliance, and total cost of ownership. For packaging buyers, converters, and brand teams, the choice between solvent-based systems and чернила на водной основе solutions requires evaluating film compatibility, press performance, VOC and safety requirements, downstream recyclability, and operating economics.
With Zhongjia Printing, an эксперт по производству гибкой упаковки, explore a pragmatic comparison and a decision framework to help B2B buyers specify the right solution for their application.
Why Ink Choice Matters for Roll Stock Film
Ink interacts with every part of the packaging supply chain:
- It must adhere reliably to the selected film or laminate while managing surface tension (dyne levels) to avoid wetting defects.
- It influences drying energy, line speed, and throughput.
- It contributes to VOC emissions and permits/exhaust requirements.
- It affects the recyclability and end-of-life treatment of printed films.
Getting the ink decision wrong can create expensive rework, regulatory headaches, or shelf-life issues — so treat it as an engineering specification, not just a creative choice.
Solvent-based Inks: Strengths and Constraints
Solvent systems are long-established in high-speed flexible packaging printing.
Strengths
- Excellent adhesion on non-porous, low-energy films (PET, metallized substrates).
- High color saturation and gloss; predictable color matching at scale.
- Proven at high press speeds with stable drying behavior due to the low latent heat of evaporation of organic solvents.
Constraints
- High VOC emissions require solvent recovery or abatement systems and increase capex and operating costs.
- Worker-safety, fire, and explosion controls add facility complexity.
- Increasing regulatory pressure and retailer sustainability demands reduce long-term attractiveness.
For projects where film adhesion and high throughput are the priority — and where the site already has solvent-handling infrastructure — solvent inks remain a dependable choice.
Water-based Ink: Sustainability with Growing Technical Capability
Чернила на водной основе has moved from a niche to a mainstream option as formulations and drying technology have improved.
Why it matters
- Lower VOC emissions greatly simplify environmental compliance and improve occupational safety.
- Good performance on corona-treated films and with appropriate priming or primers.
- Increasingly specified by brands and retailers as part of sustainability requirements.
Technical considerations
- Requires significant additional drying capacity (air knives, chill rollers) and tighter web-tension control to avoid set-off (ink transfer to the food-contact side during rewinding).
- Some films require surface treatment optimization (corona/primer) for adhesion parity with solvent systems.
- For metallized films (VMPET), specialized water-based grades are required to prevent aluminum layer oxidation and subsequent delamination.
- Low-migration water-based formulations are available for food-contact applications, but buyers must request validated data.
For buyers prioritizing sustainability, regulatory simplicity, and future readiness, чернила на водной основе is now the primary option to evaluate — provided the press and substrate are compatible.
Operational Trade-offs: Speed, Energy, and Waste
Ink selection changes operational economics.
- Solvent systems can achieve very high line speeds with established solvent recovery units; energy use is moderate, but capital investment is high.
- Water-based setups typically require 2x-4x more thermal energy for moisture removal; newer air-efficient dryers reduce this gap, but the increased electrical load per unit must be factored into TCO.
- Changeover waste and plate/slotting waste are reduced with digital printing — this is often combined with чернила на водной основе for SKU-heavy, short-run jobs.
Evaluate the full production profile: throughput targets, available dryer capacity, changeover frequency, and SKU mix before committing.
Compliance, Food Safety, and Recyclability
Three procurement checks are non-negotiable:
- Migration and low-migration data — ensure testing accounts for “set-off” migration during high-pressure roll storage.
- VOC and emissions reporting — suppliers should provide measured VOC figures and abatement specifications for solvent systems.
- Recycling impact — Verify de-inkability; some water-based inks can tint the wash-water in mechanical recycling, leading to discolored PCR (Post-Consumer Resin). Specify “washable” or “de-inkable” systems. Buyers must require documentation as part of RFQs — DoC, CoA, VOC reports, and independent recyclability tests (e.g., APR or RecyClass protocols).
Buyers must require documentation as part of RFQs — DoC, CoA, VOC reports, and independent recyclability tests.
When to Prefer Each System (Decision Rules)
- Choose solvent-based ink when: film is a reactive metallized substrate without specialized primers, required line speeds exceed validated water-based capability, or when a converter already has robust solvent-handling systems.
- Choose чернила на водной основе when: sustainability requirements (retailer/ESG) are primary, VOC limits are strict, or when running shorter, regionally localized production with treated films or primers.
Where possible, run side-by-side press trials on the actual film and at intended speeds — that validation is the single most reliable predictor of success.
Summary Table
| Comparison Item | Solvent Ink | Чернила на водной основе |
| VOC Emissions | Высокий | Низкий |
| Film Adhesion (untreated films) | Excellent | Good (requires corona/primer) |
| Print Speed | Very high | Medium–high |
| Color Saturation | Very high | Высокий |
| Drying Energy Consumption | Moderate | High to Very High |
| Food Packaging Suitability | Good (with controls) | Very good (low-migration options) |
| ESG / Retail Acceptance | Средний | Высокий |
| Retrofit Complexity | High (safety systems) | Medium (requires drying/chilling upgrades) |
Заключение
There is no one-size-fits-all answer. Water-based ink now offers strong sustainability and compliance benefits and is technically capable for an increasing range of roll stock film applications, but film treatment, high thermal energy demand, and production speed remain determining factors. Treat ink selection as a systems engineering problem: align film structure, press capability, emission rules, and downstream recyclability. When evaluated and validated together, either system can deliver reliable, compliant packaging — but the long-term strategic direction for many brands is toward water-based ink as the baseline.
О сайте Упаковка Zhongjia
Zhongjia Printing is an experienced производитель гибкой упаковки на заказ with advanced Технология печати чернилами на водной основе that delivers eco-friendly, vibrant, and food-safe results. Our factory uses water as the primary solvent in printing, significantly reducing VOC emissions and improving safety for packaging applications while maintaining high production efficiency through optimized processes.
Мы предлагаем wholesale custom flexible packaging bags и custom flexible packaging bags solutions that combine sustainability with market-ready performance. By integrating environmentally responsible printing with strict quality control, Zhongjia Printing supports brands seeking greener packaging options without compromising on visual impact or durability.
ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ
Q1: Can water-based inks match solvent inks in color quality?
Yes — modern water-based formulations deliver high color saturation. However, glossy finish and certain metallic effects may still favor solvent or UV systems.
Q2: Will switching to water-based ink require new equipment?
Often, you’ll need dryer upgrades and possibly improved web-tension control. For older lines, investment is likely; for newer presses, conversion is generally easier.
Q3: Are water-based inks safe for food-contact printing?
Low-migration water-based inks exist, but require validated migration testing and DoC. Always request lab reports matching your substrate and process.
Q4: Which ink system better supports recyclable packaging?
Generally, чернила на водной основе is friendlier for recyclability, but final compatibility depends on varnishes and coatings. Validate with recyclers.
Q5: What documentation should buyers request?
Layer-specific DoC, migration test reports, VOC measurements, and independent recyclability/EPD data where available. Insist on press-trial samples.