Printed matter manufacturing method, printing ink set, and printed matter

JPWO2023013571A5Active Publication Date: 2025-04-14TORAY INDUSTRIES INC
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Patent Information

Application Number
JP2022547214
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-08-01
Filing Date
2022-08-01
Publication Date
2025-04-14
Estimated Expiration
2042-08-01

AI Technical Summary

Technical Problem

Existing printing inks for packaging applications face challenges with insufficient adhesion to substrates, particularly on non-absorbent materials like plastic films and metal-coated surfaces, which affects the durability and concealment properties of printed matter.

Method used

A method involving a two-step printing process using a lithographic printing white ink (a) for adhesion and a different white printing ink (b) for improved hiding properties, with specific ink compositions and surface tension differences to enhance adhesion and concealment, along with electron beam curing for instant curing and improved productivity.

Benefits of technology

The method achieves excellent adhesion to substrates and enhanced hiding properties, ensuring the printed matter's durability and visibility, particularly on non-absorbent materials, while maintaining productivity through instant curing.

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Abstract

The present invention addresses the problem of providing a printed matter manufacturing method and a printing ink set with which it is possible to obtain printed matter having excellent adhesion to a base material and hiding property.　The present invention provides a printed matter manufacturing method comprising in this order: (1) a step for printing at least one type of lithographic printing black or chromatic color ink and lithographic printing white ink (a) on a base material; and (2) a step for further printing printing white ink (b) different from the lithographic printing white ink (a).
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