In the field of paper packaging printing, the demand for substrate diversity, color complexity, and finished product functionality is on the rise. The4 6 8 color stack type flexo printing machine, with its unique structural design and robust adaptability, has emerged as the preferred equipment for printing on mainstream papers such as coated paper, kraft paper, and white cardboard. It empowers a wide range of finished products including paper cups, paper bags, and paper boxes, striking a perfect balance between efficiency, quality, and flexibility.
CH-B-Z 4 Colour Stack Type Flexo Printing Machine for Paper/Non woven
I. Stack Flexo Printing Machine: The High-Efficiency and Precision Core of Printing
Also called the stack type flexo printing machine, its key edge is independent printing units arranged vertically-centrally integrated on one or both ends of the main wallboard. It runs efficiently via standardized synchronous belt transmission and an intelligent control system. Against other flexographic presses, it has three core strengths in paper printing:
1.Flexible Multi-Color Switching:It supports on-demand 4/6/8-color configuration, enabling single or multi-color continuous printing to cover needs from simple logos to complex gradients. With automatic tension control, edge position control, and register systems, it ensures smooth color transitions, sharp pattern edges, and no color bleeding or blurring.
2.Wide Substrate Compatibility:It is compatible with various forms of coated paper, kraft paper, white cardboard, and tissue base paper-including sheet-fed, roll-fed, and non-woven fabrics-covering the full range of 20–400 gsm materials. It can handle both thin tissues and non-woven fabrics, as well as heavy-duty food carton paper stably. Through adjustable impression pressure and precise tension control, it prevents material damage, wrinkling, and deviation, adapting to the physical properties of different substrates.
3.Simultaneous Double-Sided Printing: Fitted with a precise double-sided printing mechanism, it handles front and back printing in one pass-no secondary registration needed-boosting production efficiency significantly. Ideal for products requiring double-sided marking, like food paper bags and disposable diaper outer packaging.The register accuracy is consistent with single-sided printing, avoiding pattern misalignment between the front and back sides.
In addition, the equipment is designed to primarily use water-based inks supplemented by solvent-based inks. Combined with laser-engraved anilox rollers, it precisely controls ink film thickness and delivers high color reproduction. Water-based inks, in particular, are odorless and highly adhesive, balancing environmental friendliness and safety, and complying with the green printing trend in food and hygiene products.
Detail Image
II. Adaptation to Mainstream Substrates: Mutual Empowerment of Material Properties and Printing Advantages
The4 6 8 color stack type flexo printing machine is tailored to coated paper, kraft paper, white cardboard, tissue base paper, and non-woven fabrics. It maximizes material strengths and printing outcomes to fit food packaging and hygiene product needs.
1.Coated Paper: A Premium Pick for Vivid Color Printing
Coated paper has a smooth surface coating, high whiteness, and strong ink absorption-able to accurately reproduce complex colors and design details. It's ideal for food packaging labels and high-end food gift box liners. The stack flexo printing press uses precise ink control and low-pressure printing to avoid coating abrasion, delivering bright, saturated patterns with great glossiness. It works with coated paper of various grammages, and laminated printed products are more scratch-resistant, meeting food packaging's aesthetic needs.
2.Kraft Paper: Durable, Eco-Friendly with Retro Texture
Made from natural yellow-brown wood pulp, kraft paper is tough, wear-resistant, with clear fiber textures-plus great recyclability and ink absorption. It fits food paper bags and cartons. The stack flexo machine has a stable tension control system, ensuring no deviation or wrinkling when processing kraft paper of different grammages. It also handles thin kraft paper for food inner bags, balancing eco-friendliness and load-bearing to meet food industry needs.
3.White Cardboard: The Stiff and Fold-Resistant Mainstay of High-End Packaging
Crafted from pure wood pulp, white cardboard is rigid, stiff, uniformly white, and smooth without impurities, with excellent fold resistance. It is the core material for pizza boxes, hamburger boxes, and food cartons. The stack-type flexographic printing machine is precisely adapted to white cardboard of different grammages, maintaining the material's stiffness after printing. It can be integrated with die-cutting processes for one-step forming, ensuring the sealing and load-bearing capacity of food packaging boxes. Meanwhile, the printed patterns are clear and firm, meeting the mass production needs of catering packaging.
4.Tissue Base Paper: Printing for Soft, Skin-Friendly Hygiene Products
Known for softness and high water absorbency, tissue base paper is widely used in catering napkins and household kitchen paper-needing strict standards for ink safety, adhesion, and material protection. The equipment uses low-pressure flexographic printing to avoid damaging tissue fibers. Paired with food-grade water-based inks, it delivers odorless, fade-resistant prints that clearly show brand logos and simple patterns, balancing hygiene and looks for high-speed mass production.
5.Non-Woven Fabric: Printing for Durable, Breathable Multi-Functional Materials
Non-woven fabrics are breathable, water-resistant, and biodegradable, fitting non-woven bags and hygiene product outer packaging. Their easy stretch and weak ink absorption demand strict standards from printing equipment. The stack type flexo press tweaks the tension control system and uses specialized ink adaptation, ensuring clear, smudge-free prints with strong adhesion. It is suitable for thin non-woven fabrics used in food fresh-keeping packaging, as well as wear-resistant printing for disposable diaper outer packaging, balancing practicality and environmental friendliness.
Printing Sample
III. Safety and Compliance Assurance: The Core Premise of Printing for Food and Hygiene Products
Given that food packaging and hygiene products are in direct contact with the human body or food, the stack-type flexo printing machine 4/6/8-colo builds a comprehensive safety defense line across inks, processes, and substrate adaptation, complying with industry regulatory standards:
1.Compliant Environmentally Friendly Inks:Standard-equipped with food-grade water-based inks, it has passed domestic and international food contact material safety certifications such as FDA and GB 4806. Free of benzene and heavy metal residues, and odorless after printing, it can be directly used for intimate or food-contact products such as napkins, food paper bags, and disposable diapers.
2.Hygienic Process Control: The equipment uses a closed printing unit design to keep dust and impurities from contaminating substrates. It also supports quick ink changes and cleaning, cutting cross-contamination between batches and suiting hygiene product production's high-frequency order changes.
3.Safe Substrate Adaptation:For special substrates such as tissue base paper and food-grade non-woven fabrics, it optimizes impression parameters to avoid material damage and bacterial growth. The physical properties of printed materials-such as tissue water absorbency and non-woven fabric breathability-remain unaffected, ensuring the safe use of finished products.
IV. Core Finished Products: Food Packaging & Hygiene Supplies
With precise adaptation to various substrates and multi-color printing, the 4/6/8-color stack flexo printing machine focuses on food packaging and hygiene products. Its core finished products include:
1.Catering Packaging: It works with white cardboard, kraft paper, and non-woven fabrics to make pizza boxes, hamburger boxes, food cartons, paper bags, and disposable placemats. It also prints napkins, kitchen paper, and other tissue products-delivering clear, odorless, colorfast patterns that meet food safety standards. Ideal for mass printing needs of chain restaurants, bakeries, and delis.
2.Eco-Friendly Packaging: It uses kraft paper, white cardboard, and non-woven fabrics as core raw materials to make food-grade eco-friendly paper bags, cartons, and non-woven bags. It also works for disposable diaper outer packaging printing, showing simple brand logos and product details. It strikes a balance between eco-friendliness, load capacity, and hygiene safety, aligning with food and hygiene industry trends.
V. Conclusion: Empowering Efficient Upgrading of Printing for Food and Hygiene Products
With core advantages of multi-substrate adaptation, multi-color precision, and safety & environmental friendliness, the 4/6/8-color stack-type flexo printing machinebreaks the limitations of traditional equipment. It precisely meets the printing needs of coated paper, kraft paper, white cardboard, tissue, non-woven fabrics, and other substrates, providing an integrated solution for core product categories such as pizza boxes, hamburger boxes, food paper bags, tissues, and disposable diapers. Focusing on serving the food packaging and hygiene product industries, it helps enterprises achieve efficient mass printing and quality upgrading, seizing a competitive edge in the market.
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