Composite pure waterborne hard-to-be-adhered material adhesive for packaging paper commodities and preparation method thereof

Abstract

The invention relates to a composite pure waterborne hard-to-be-adhered material adhesive for packaging paper commodities and a preparation method thereof. The adhesive is prepared from a chain transfer agent, a reactive emulsifier, a thickener, an azo initiator, deionized water and a pH modifier, modified long-chain methacrylate, a modified active monomer containing hydroxyl, modified double-ended ester containing double bonds, a modified copolymerizable special monomer for a self-cross-linking emulsion, a modified functional monomer, modified methyl glucoside and modified water-soluble modified rosin resin, wherein the modified active monomer containing hydroxyl, the modified double-ended ester containing double bonds, the modified copolymerizable special monomer for a self-cross-linking emulsion, the modified functional monomer, the modified methyl glucoside and the modified water-soluble modified rosin resin are obtained under radiation of cobalt 60 gamma-ray. The preparation method comprises the steps of modifying the raw materials; preparing a pre-emulsion; preparing protection dispersed emulsion liquid; preparing seeds; preparing a copolymer emulsion and compounding the adhesive. The adhesive is odorless and has no toxic substances and meets the four quality standards in the terms of environment friendliness, water-temperature resistance, quick adhesion and persistent adhesivity standard and has good adhesion effect on the paper film which is not subjected to corona treatment and the non-polished UV oil coating.

Description

technical field [0001] The invention provides a pure water-based hard-to-stick material adhesive for composite paper commodity packaging and a preparation method thereof, belonging to the technical field of adhesive synthesis. Background technique [0002] In the field of natural science, materials with a surface tension lower than 38 dynes are defined as difficult-to-stick materials, such as: polypropylene, polyethylene, BOPP film and UV oil coating. In the printing and packaging industry, this kind of difficult-to-stick material is widely used in the production process of color-printed paper products coated with film or color-printed paper products coated with UV oil coating composite paper products, and is used as packaging for goods such as cartons, cartons and paper bags. The veneer layer plays the role of decoration, protection and moisture insulation. These products must be bonded and sealed with paper-plastic sealant, UV sealant and other difficult-to-stick material ...

AI Technical Summary

Problems solved by technology

[0010] 1) There are strict requirements on the surface tension of BOPP film, one of the materials that need to be sealed, that is, it must reach 36-38 dynes, otherwise the bonding quality cannot be guaranteed

However, in actual production, even the corona-treated BOPP film has a dynamic surface tension. Three months after the BOPP film leaves the factory, the dyne value will gradually decrease with the passage of time until it disappears; In recent years, the new product "non-adhesive coating" BOPP film in the printing and packaging industry has appeared and has been widely used. The non-coating film surface of the "non-adhesive coating" BOPP film has not been corona treated at all. It is impossible for the tension to reach 36-38 dynes

[0011] 2) The scope of application is small, and it can only be used for bonding paper-plastic materials that are difficult to stick. It has no bonding effect on UV oil-paper products with lower surface tension than BOPP films.

[0012] 3) The third type of paper-plastic sealing glue is mostly a mixture of organic solvents and water, because it contains a large amount of toluene or other organic solvents, which will endanger the health of the staff during the production of packaging boxes, bags, and boxes, and its residues will endanger the health of end consumers

[0013] 4) Difficult to break through the technical bottleneck: Most of this type of sealing glue can only withstand the "high temperature" of 60°C and cannot withstand humid air, so it is of little significance to be used in ocean-going containers

[0014] To sum up, in the field of commodity circulation, there is no adhesive product that can fully and comprehensively meet the aforementioned four quality indicators, standards and requirements among the adhesive products of difficult-to-stick materials for composite paper commodity packaging in the prior art Therefore, to develop an environmental protection standard that exceeds the basic requirements of the society and whose quality, applicability, and application can meet and adapt to the increasingly stringent environmental protection or quality requirements of the society and the requirements of technological progress, and in production, use and consumption Adhesive products for difficult-to-adhesive materials that are in line with the good vision of human society for time and waste post-processing are the urgent desire of society, science and technology circles, business circles, and consumers

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