Fengming Machinery | Embracing the Green Packaging Transition: How Integrated Flexo Printing and Coating Empowers Upgrades of the Paper Packaging Industry

With the continuous implementation of plastic restriction and carbon reduction policies, China’s paper packaging industry is undergoing technological iteration. Water-based flexo printing is gradually replacing part of gravure printing, while plastic-free barrier coating technology is being rapidly commercialized. Demand is rising in segmented sectors such as carton pre-printing, paper cups and bags, medical sterile packaging materials, and biodegradable paper containers. Printing factories no longer merely need standalone printing machines; instead, they require complete process equipment solutions enabling coordinated printing, glue coating, wax coating and barrier coating. Since 2006, Wenzhou Fengming Machinery has focused on flexo printing and coating equipment. Boasting more than 20 domestic and international patents, the company has built a full equipment portfolio covering sleeve flexo presses, petal-type printing units, medical frame-coating printing machines, plastic-free coating machines and wax coaters. Its solutions serve multiple sectors including food packaging, medical packaging, carton pre-printing and eco-friendly paper containers, delivering customized production line solutions for packaging manufacturers.

Multiple Technical Routes of Machines to Adapt to Diverse Order Conditions

When selecting flexo printing equipment, three core factors determine machine selection: printing substrate, order batch size and job change frequency. No single machine can handle all production scenarios.

Sleeve-type full-servo flexo presses are designed for small and medium-batch production with multiple SKUs. Traditional gear-driven flexo presses are limited by gear pitch, offering a narrow range of repeat printing lengths and cumbersome plate-changing procedures, which lead to long downtime for small order changeovers. Fengming FM‑TS and FM‑FS sleeve models adopt sleeve roller structures. Free from gear pitch restrictions in repeat printing lengths, sleeves can be pre-plated offline, drastically cutting downtime for job changeovers. Equipped with full-servo drive, digital pre-registration and online full inspection modules, these machines reduce reliance on operators’ experience. Compatible with both water-based and UV inks, they stably process tissue paper, aluminum foil paper, BOPP, PET and various paper grades ranging from 30gsm to 400gsm. They are ideal for packaging and printing enterprises with high shares of gift wrapping paper, multi-specification food paper bags and label orders. The FM‑FS push-pull version is further upgraded with turret non-stop rewinding for large-batch paper printing projects to achieve high-speed continuous production.

For mainstream markets of paper bags, paper cups and carton pre-printing, petal-type flexo presses have become a popular industry choice. Fengming FM‑CS series petal models feature quick-change petal plate mounting structures. Anilox rollers and plate cylinders can be easily assembled and disassembled, and printing units support one-click positioning for simplified operation. Full-servo shaftless drive technology maintains stable register accuracy during speed acceleration and deceleration, cutting material waste during machine setup. Kraft paper, coated paper, PE-coated paper, non-woven fabrics and multi-layer composite paper are all processable, covering numerous real production scenarios including shopping paper bags, milk tea paper cups, courier bags, milk packaging and carton pre-printing.

For wide-format, large-batch corrugated carton pre-printing, the FM‑S wide-format pre-print flexo press adopts heavy cast frames to ensure stable long-hour high-speed operation. Equipped with servo pre-registration and closed-loop tension monitoring across the whole machine, it handles heavy-weight kraft paper and meets high-capacity demands of color carton pre-printing factories. The FM‑A/B general modular flexo press supports inline integration of post-processes such as dust removal, corona treatment, die-cutting, creasing and slitting. Combining multiple procedures on one production line reduces semi-finished product handling and suits printing enterprises aiming to build integrated production lines. The stack-type FM‑VSP50 model features a compact footprint and short material path. Compatible with paper, films and non-woven fabrics, it fits manufacturing plants with limited workshop space.

Two Types of Specialized Equipment to Enter High-Value Segmented Tracks

Many packaging factories gain profit growth from differentiated, high-threshold product segments, and specialized process equipment serves as the hardware foundation to access these markets.

Medical sterile packaging is a highly specialized sector. Ordinary general printing machines struggle to realize both front-side printing and back-side glue coating in one pass. Medical dialysis paper is thin and prone to stretching and wrinkling during production, while finished products tend to curl. The uniformity and concentration control of glue coating directly affect the final sterile sealing performance. Fengming FM‑YL medical frame-coating flexo printing machines are specially developed for medical glove and medical consumable packaging. One machine completes multi-color front printing and frame glue coating on the reverse side. It is equipped with an automatic glue concentration control system that triggers automatic ventilation adjustment when concentration exceeds limits. Zoned independent temperature-controlled ovens paired with active traction mechanisms prevent thin paper from stretching and deformation. A strong cooling plus micro water replenishment unit at the discharge end effectively solves curling issues of finished dialysis paper. The complete machine meets the clean production requirements for medical packaging processes, helping packaging manufacturers enter the medical packaging material sector.

Amid the plastic-free trend, traditional PE-laminated paper cups and paper bags face prominent recycling challenges, making plastic-free water-based barrier coating a major technological trend in the industry. The FM‑T1020 plastic-free coater applies water-based barrier coatings on base paper for paper cups, paper bags and paper straws. The coating delivers waterproof, oil-proof and heat-sealing properties. The finished products are recyclable and repulpable with food-contact safety, replacing traditional PE lamination processes. In addition, the FM‑L series wax coaters perform wax coating for hamburger paper and candy wrapping paper. FM‑TL high-speed coaters for thin/thick paper adapt to substrates of different grammages such as straw paper and cup kraft paper, meeting diverse coating requirements of food paper packaging and enabling green packaging transformation.

Equipment Selection: Beyond Nominal Parameters, Focus on Total Cost of Ownership (TCO) Throughout the Lifecycle

Many purchasing enterprises treat quotation as the primary evaluation standard for equipment assessment, ignoring the comprehensive operating costs over the equipment’s full lifecycle. The true cost of a machine covers procurement investment, energy consumption, setup waste, replacement of wearing parts, losses caused by breakdowns, after-sales spare parts supply and other factors.

In actual production, the maximum speed marked on machine brochures does not equal effective production speed. Actual output is jointly determined by substrate stability, drying capacity, job change time and automation level. The core advantages of sleeve and petal-type machines lie not merely in top speed, but improved job change efficiency brought by automatic pre-registration and quick-change mechanisms, which reduce raw material waste during setup. During procurement evaluation, enterprises should sort out their business plans for the next 1–3 years, clarify main production substrates, order batch distribution and mainstream finished product categories, and verify the modular expandability of equipment – whether color groups, coating or die-cutting units can be added in the future to adapt to business iteration.

Meanwhile, the supplier’s manufacturing experience is critical. Flexo printing and coating equipment belongs to heavy machinery. The component supply chain, assembly process, on-site commissioning & training, and spare parts response speed directly affect output efficiency after machine commissioning. Since 2006, Fengming Machinery has continuously upgraded its machine models, gradually expanding from early film blowing and bag-making equipment to a full range of flexo printing and complete coating lines. It boasts independent R&D and manufacturing capability for complete machines, providing integrated services including customized solutions, installation & commissioning, operator training and spare parts supply for global customers.

The packaging industry is accelerating toward green development and differentiation. Homogenized orders relying purely on price competition see shrinking profit margins. Exploring segmented markets and adopting new technologies such as water-based flexo printing and plastic-free coating has become a key way for packaging factories to stand out. Printing and coating equipment is more than production machinery; it acts as a process carrier for enterprises to take on new business. Whether you run general paper bag and paper cup production, develop carton pre-printing business, or enter high-value tracks such as medical packaging and plastic-free paper containers, selecting equipment matching your order structure and product roadmap can fully unlock production capacity and generate long-term value.