Packart Innovation

Flexo Printing

Flexo Printing

Flexo printing is the go-to solution for cost-effective, high-speed production of corrugated boxes with basic designs, while offset printing is ideal for premium, detailed graphics.

Flexographic (Flexo) printing is a widely used method for printing on corrugated boxes, particularly for bulk packaging and shipping needs. It is cost-effective, fast, and highly versatile, making it ideal for large-scale production of boxes that require simple designs, logos, or text.

Flexographic printing is a direct printing process that uses flexible relief plates made of rubber or photopolymer to transfer ink onto substrates like corrugated cardboard. It is well-suited for printing on uneven, absorbent surfaces, such as corrugated boxes.

Types of Corrugated Boxes for Flexo Printing

Flexo printing is the go-to solution for cost-effective, high-speed production of corrugated boxes with basic designs, while offset printing is ideal for premium, detailed graphics

Shipping Boxes:

Brown kraft corrugated boxes with logos, handling instructions, or barcodes.

Retail Ready Packaging (RRP):

Simple branded boxes for store displays.

Custom Printed Cartons:

Boxes with product names, logos, and safety information.

E-Commerce Boxes:

Corrugated boxes printed with brand logos and website details.

Flexo Printing Process for Corrugated Boxes

It is well-suited for printing on uneven, absorbent surfaces, such as corrugated boxes.

  • Artwork Creation: Designs are created in vector format (simple logos, text, and graphics) using software like Adobe Illustrator.
  • Color Management: Limited to 1–4 solid colors (Pantone shades) for simplicity and cost efficiency. Complex gradients or images are avoided.
  • Plate Making:
    • Flexible photopolymer plates are made for each color.
    • These plates have raised areas corresponding to the design.
  • Plates are mounted onto cylinders in the flexo printing press.
  • Each cylinder corresponds to one color of ink.
  • Water-based inks or solvent-based inks are used for corrugated boards because they dry quickly and absorb well into the surface.
  1. Ink Application:
    • Ink is transferred onto the flexible plate using an anilox roller that controls ink volume.
    • The plate transfers the design directly onto the corrugated board.
  2. Substrate Feeding:
    • Corrugated sheets are fed into the printing press.
  3. Color Layering:
    • For multi-color designs, the substrate passes through multiple stations (each for a specific color).
  4. Drying:
    • Quick drying with hot air or infrared dryers to prevent smudging.
  1. Die-Cutting: Printed corrugated sheets are cut into box shapes using rotary or flatbed die-cut machines.
  2. Folding and Gluing: The boxes are folded along crease lines and glued together for assembly.
  3. Quality Inspection: Ensures consistent print quality and alignment.

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