Flexographic Printing Basics
Overview of Flexographic Printing Process
In this section, Dan provides an overview of how flexographic printing works, detailing the process and key components involved.
Introduction to Flexographic Printing
- Flexographic printing, also known as flexo, is a form of relief printing where ink is applied to a raised image on a flexible plate and then transferred onto a substrate.
Manufacturing Flexible Printing Plates
- The process begins with creating artwork optimized for flexo printing.
- Flexible printing plates are manufactured by exposing a photo polymer plate to UV light to build up the image areas.
Components of Flexible Printing Press
- The flexible printing press consists of multiple stations corresponding to the number of colors to be printed.
- Each station includes three rolls: Anilox roll, plate cylinder, and impression cylinder.
Ink Transfer and Quality Control in Flexographic Printing
This section delves into the ink transfer process within flexographic printing stations and emphasizes quality control measures.
Ink Transfer Mechanism
- Anilox roll carries ink from a reservoir onto the printing plate.
- Plate cylinder holds the photo polymer plate for image transfer.
- Impression roll supports the substrate during ink transfer from plate cylinder.
Importance of Precise Ink Alignment
- Each color's ink transfer must align accurately for high-quality image reproduction.
- Fast-drying inks are used in flexo printing to ensure efficient production processes.
Efficiency and Color Standards in Flexographic Printing
This part focuses on efficiency considerations and maintaining color standards in flexographic printing.
Water-Based Process Inks
- Label Technology uses water-based process inks developed internally for optimal adhesion and resistance properties.
- Automated ink blending ensures consistency across print runs for reproducible results.
Maximizing Web Width and Reverse Printing
- Web width optimization occurs before slitting the web into required widths post-printing.
- Flexo printing allows reverse artwork printing for specific applications like film lamination processes.