Pre-coating with aluminized non-woven fabric or aluminized card paper base material

Abstract

The invention discloses a pre-coating with an aluminized non-woven fabric or an aluminized card paper base material. The pre-coating sequentially comprises a transparent coating A, a transparent coating B, an aluminum coating, an enhanced aluminum coating, a non-woven fabric or card paper, a base coat and a hot melt adhesive layer from top to bottom, wherein the thickness of the transparent coating A and the transparent coating B is less than 400 angstroms; the refractive index of the transparent coating A to visible light is less than that of the transparent coating B. According to the pre-coating disclosed by the invention, the enhanced aluminum coating is coated on the surface of the non-woven fabric or card paper, so that the firmness and toughness of the aluminum coating are improved;due to evaporation of two transparent coatings having different physical properties, the problems that color change occurs and the aluminum coating darkens because the non-woven fabric or card paperis printed or coated after surface aluminizing are solved.

Description

technical field [0001] The invention belongs to the technical field of packaging and printing. More specifically, it relates to a precoated film having an aluminized non-woven fabric or an aluminized cardboard substrate. Background technique [0002] For aluminized non-woven fabrics and aluminized cardboard products, the product structure at home and abroad is basically similar. Ordinary products have the aluminized layer directly exposed to the air, while high-end products use methods such as spraying transparent ink or resin to protect the aluminum layer, resulting in Aluminum brightness and cause discoloration and graying of the aluminized surface. However, the transparency of aluminum-coated non-woven fabrics or cardboard products produced by covering methods such as net roll coating with resin is definitely not good; and the thickness of ink or resin coating can achieve a micron-level accuracy, which cannot achieve a thickness less than The level of 400 angstroms; in ...

AI Technical Summary

Problems solved by technology

[0002] For aluminized non-woven fabrics and aluminized cardboard products, the product structure at home and abroad is basically similar. Ordinary products have the aluminized layer directly exposed to the air, while high-end products use methods such as spraying transparent ink or resin to protect the aluminum layer, resulting in Aluminum brightness and cause discoloration and graying of the aluminized surface

However, the transparency of aluminum-plated non-woven fabrics or cardboard products produced by covering methods such as net roll coating with resin is definitely not good; and the thickness of ink or resin coating can achieve the accuracy of micron level, and the thickness less than The level of 400 angstroms; in addition, the spray resin needs to be diluted with a solvent, and it is extremely difficult to avoid chemical reactions during the drying process; therefore, the performance and parameter indicators of various parts on the surface of the product material cannot be guaranteed.

[0003] The above problem is a common problem in the printing and packaging industry, and it is also a technical difficulty that seriously affects product quality.

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