Waterproof printing process for paper printed matter

• Main Authors: LUO YUNZHENG, TANG DEHONG
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COLOUR PRINTING; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to the technical field of printing, and discloses a waterproof printing process of a paper printed matter, which comprises the following steps: S1, preparation of ink: (1) adding water-soluble acrylic resin, ethanol and a part of deionized water into a reaction kettle according to the formula of the ink used for the paper printed matter to be printed; and (2) putting the organic pigment and part of the auxiliary agent into a reaction kettle according to the formula, sufficiently and uniformly stirring, adding 3-5% of the water-based ink waterproof agent into the prepared water-based ink, and uniformly stirring to obtain the waterproof water-based ink. The water-based ink waterproof agent is added into the printing process, so that the water resistance of the printing ink used in the printing process is improved by utilizing the water-based ink waterproof agent, and the water-based ink waterproof agent is a water-soluble environment-friendly nonionic water-based ink waterproof agent, is a