Aqueous laminating adhesive for gold and silver cards and preparation method thereof

Abstract

Belonging to the field of aqueous binder preparation, the invention discloses an aqueous laminating adhesive for gold and silver cards and a preparation method thereof. With a solid content of 45-55%, the laminating adhesive is an aqueous laminating adhesive employing monomers, an emulsifier, an initiator, a buffering agent, a pH conditioning agent, aqueous auxiliary agents and deionized water asthe raw materials, which undergo the steps of pre-emulsification, seed reaction, polymerization and complex formulation. Wherein, the monomers include hard monomers, soft monomers and functional monomers containing -COOH and -OH groups; the hard monomers consist of methyl methacrylate and styrene; the soft monomers consist of butyl acrylate monomer and enthyl hexyl acrylate; the functional monomers containing -COOH and -OH groups are composed of any of methacrylic acid and acrylic acid, any of hydroxyethyl acrylate and hydroxypropyl acrylate, and ethylene glycol diacrylate; the emulsifier is composed of alkyl ether ammonium sulfate and KD AHPS with a ratio of 1:0.4-0.8 by weight.

Description

technical field [0001] The invention relates to the field of adhesive manufacturing, in particular to a water-based laminating adhesive for gold and silver cards and a preparation method thereof. Background technique [0002] Gold and silver cards are obtained by printing a layer of gold and silver ink on the surface of paper. After this printing paper is combined with plastic film, it can obtain special effects of gold and silver. It is used for some high-end gifts, health products, wine, daily necessities, cosmetics Such packaging gives people a very intuitive stimulating effect, makes the packaged goods appear more high-end, and can increase the value of the goods. Therefore, it is widely used in the packaging industry and is an important form of paper packaging. Most of the various laminating adhesives used in the market are solvent-based laminating adhesives, which require a large amount of toluene solvent, which pollutes the environment and is also unfavorable to the p...

AI Technical Summary

Problems solved by technology

At present, most of the various laminating adhesives used in the market are solvent-based laminating adhesives, which require a large amount of toluene solvent, which pollutes the environment and is not good for the physical and mental health of operators.

However, the ordinary emulsion-type laminating adhesives on the market have some defects in the coating of gold and silver cards, mainly manifested in insufficient bonding strength and poor initial viscosity; When the film paper is peeled off, the ink is difficult to remove, and it is prone to delamination; the post-processing performance is not good, and creasing, embossing, and wrinkling or delamination occur during die-cutting, etc.

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