Wholesale Printed FSA Food Grade Paper Cup Fan Raw Materials With Flexographic Printing PLA coated

Flexographic printing is ideally suited for printing on PLA-coated paper cup stock for several key reasons, which stem from the material's properties and the requirements of the packaging industry.

• Compatibility with Non-Porous Substrates:
  • PLA (Polylactic Acid) is a bioplastic coating derived from corn starch or sugarcane. It creates a smooth, non-absorbent surface similar to traditional plastic.
  • Offset printing relies on the paper absorbing some moisture and the interaction between water and oil-based ink. The non-porous PLA surface prevents this, making offset unsuitable.
  • Flexo uses fast-drying, low-viscosity liquid inks (often water-based or UV-curable) that can adhere well and dry effectively on non-porous surfaces like PLA.
• Excellent Adhesion with Flexible Inks:
  • Flexographic inks are formulated for flexibility and adhesion on challenging surfaces like plastic films, foils, and coated papers.
  • These inks bond reliably with the PLA coating, ensuring the print does not crack, peel, or rub off during the subsequent cup-forming process (where the flat fan is rolled and curled) or during use.
• Ability to Use Water-Based Inks:
  • For food-contact items like paper cups, safety is paramount. Flexo excels at using compliant, low-VOC (Volatile Organic Compound) ink systems.
  • Water-based inks are extremely common in flexo for this application. They are odorless, non-toxic, and meet stringent food safety regulations, which is a critical advantage over many solvent-based inks used in other processes.