Environment-friendly skip hot-stamping alumite hot-stamping foil and preparation method thereof

Abstract

The invention discloses environment-friendly skip hot-stamping alumite hot-stamping foil and a preparation method thereof. The adhesive force of an existing alumite hot-stamping foil coating to a base film layer and the adhesive force between coatings are low. A coloring layer of the hot-stamping foil is prepared from, by weight percent, 20%-40% of thermosetting acrylic resin, 2%-10% of blocked isocyanate, 3%-8% of a styrene-maleic anhydride copolymer, 1%-8% of cellulose acetate butyrate, 2%-10% of adhesive force promotion resin, 2%-7% of dye, 30%-60% of butanone and 1%-10% of cosolvent. The special adhesive force promotion resin is added in the formula, so that the adhesive force of the coloring layer and a base film layer and the adhesive force of the coloring layer and a vacuum aluminum coating layer are effectively improved. A water-soluble paint formula is adopted in a water-based back glue layer, an adhesion promoter is added, and therefore the usage amount of a low-softening-point low-molecular-weight auxiliary is reduced, meanwhile, the adhesive force of the water-based back glue layer to the vacuum aluminum coating layer and the temperature resistance of the water-based back glue layer are improved, and the utilization rate can be increased to 90% or above from original 40%-50%.

Description

technical field [0001] The present invention relates to a printing plate or foil and the materials used therein, and more particularly relates to an environment-friendly skipping hot stamping anodized aluminum hot stamping foil and a preparation method thereof. Background technique [0002] Anodized aluminum hot stamping foil is composed of polyester film base layer, release layer, coloring layer, vacuum aluminized layer and adhesive layer. The transfer coating is transferred to the surface of the substrate under the action of heat and pressure. After hot stamping, the polyester film and the part that has not been transferred are peeled off from the substrate, and on the surface of the substrate according to the shape of the hot stamping template Form a hot stamping layer with a metallic texture. [0003] The preparation process of anodized aluminum hot stamping foil is to first coat the release layer and the coloring layer on the polyester film base, then coat the adhesive...

AI Technical Summary

Problems solved by technology

[0005] The anodized aluminum hot stamping foil coating produced by the existing technology has low adhesion to the base film layer and the coating layer, and the water-based adhesive layer has poor temperature resistance, etc., which cannot reach the number of times of repeated skipping hot stamping set by the user. , easily lead to waste

When the hot stamping foil is subjected to mechanical forces such as stretching and extrusion after repeated steps of hot stamping, the adhesion of the transfer coating to the base film layer gradually decreases, making its release more and more loose. If the hot stamping is repeated 6-10 times, the coating is easy to come off, the hot stamping layer is not clear, there are many edge burrs, flying gold and other quality defects, and even the coating directly falls off; in addition, it is now applied to anodized aluminum hot stamping foil The water-based adhesive coating has a certain degree of environmental protection and realizes zero VOC emissions in the production process. However, due to repeated heating and the accumulation of waste heat after hot stamping and winding, the small molecular weight with low softening point Resin migrates to the coating surface, sticking occurs, and the transfer coating is transferred to the back of the base film layer when the foil is reopened, making the foil unusable