Formaldehyde-free decorative adhesive film paper and preparation method thereof

Abstract

The invention belongs to the technical field of decorative paper, and particularly relates to formaldehyde-free decorative adhesive film paper and a preparation method thereof. The formaldehyde-free decorative adhesive film paper sequentially comprises a back-coated resin layer, a first resin-impregnated layer, base material paper, a second resin-impregnated layer and a surface-coated resin layerfrom inside to outside. According to the formaldehyde-free decorative adhesive film paper, formaldehyde-free waterborne polyurethane resin serves as a preparation raw material and replaces traditionalurea resin and melamine resin, the prepared decorative adhesive film paper is green, environmentally friendly, free from formaldehyde, high in drying speed, excellent in performance and simple and convenient to construct, has hardness and toughness and can be popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of decorative paper, in particular to a formaldehyde-free decorative adhesive film paper and a preparation method thereof. Background technique [0002] Formaldehyde is a colorless gas with a special pungent smell. It is highly toxic and easy to cause cancer. The release cycle is as long as 8 to 15 years. It is more harmful to the human body, especially the elderly, children and pregnant women. It is poisonous in my country. Chemicals on the Priority Control List. Formaldehyde is the most important and most harmful pollutant in indoor air. Excessive indoor formaldehyde temperature will cause serious damage to the immune function of the human body. At the same time, formaldehyde can cause nasal cavity cancer, sinus cancer and leukemia. It can cause women's menstrual disorders, pregnancy syndrome, and neonatal physical decline and chromosomal abnormalities. People who are exposed to low-dose formaldehyde for a...

AI Technical Summary

Problems solved by technology

For example, Chinese patent document CN 104804168A discloses a kind of aqueous polyurethane emulsion and its preparation method and application on wallpaper base film, wallpaper base film, and this emulsion comprises following raw materials: polyester polyol, diisocyanate, hydrophilic chain extender , salt forming agent and water. Although it has good waterproof and alkali-proof properties when applied to wallpaper base film, its scratch resistance, corrosion resistance and wear resistance are not good, and there are also certain problems in flexibility. It brings difficulties to the later cutting and other processes

Chinese patent document CN 105368370A discloses a water-based polyurethane wallpaper adhesive, which includes the following raw material components: polyol, polyisocyanate, first chain extender, second chain extender, third chain extender, organic bismuth Catalyst, triethylamine, wetting and leveling agent, antifungal agent and thickener, which are safe and environmentally friendly, and have excellent alkali resistance, but the water-based polyurethane wallpaper has strong adhesive force, and adhesion problems are prone to occur during later construction. At the same time, it resists external scratch resistance and wear resistance.

[0005] At present, many water-based polyurethane adhesives used to prepare decorative film paper have problems such as slow drying speed, lack of hardness and toughness, poor water resistance, and poor wear and scratch resistance. Therefore, it is necessary to overcome the current traditional formaldehyde-based adhesives. Adhesives prepared from raw materials and water-based polyurethane adhesives have deficiencies, so as to provide people with a formaldehyde-free decorative adhesive film paper with green environmental protection, fast drying speed, hardness and toughness, and excellent performance and its preparation method

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