Sealing adhesive and preparation method thereof

Abstract

The invention relates to a sealing adhesive for sealing and adhesion of edges and bottoms of various packing boxes, and in particular relates to an aqueous sealing adhesive. The sealing adhesive comprises the following components: a hard monomer, a soft monomer, a functional monomer, an initiator, an emulsifying agent, a buffering agent, a functional auxiliary, a viscosity regulating agent and deionized water. Compared with the prior arts such as oil adhesive and ethylene-vinyl acetate (EVA) thermosol technologies, the sealing adhesive disclosed by the invention has the beneficial effects of low cost, environment conservation and no toxicity, no pollution, strong early adhesive force, short drying time and large adhering strength; and after adhesion is carried out, the sealing adhesive is stable in property, is not exploded and is not crisped, can resist high and low temperatures, and has good adhesiveness on upper calendaring and composite film products and the like.

Description

technical field [0001] The invention relates to a sealing glue used for edge sealing and bonding of side openings and bottom openings of various packaging boxes and a preparation method thereof. Background technique [0002] Sealing glue is also called lapping glue, edge-sealing glue, paper-plastic adhesive, etc., and is used for edge-sealing bonding of the edge and bottom of various packaging boxes. [0003] It is required to be environmentally friendly, non-toxic, non-polluting, strong initial adhesion, fast drying time, high bonding strength, stable performance after bonding, no cracking, no brittleness, and high and low temperature resistance. Good adhesion. Sealing glue can be divided into oily, water-based and hot-melt glue. [0004] The toxicity and use safety of oil-based glue are becoming more and more prominent. Not only is the environment polluted, but the health damage to the workers is great. Therefore, oily glue still has a certain range of applications in t...

AI Technical Summary

Problems solved by technology

[0004] The toxicity and use safety of oil-based glue are becoming more and more prominent. Not only is the environment polluted, but the health damage to the workers is great. The effect of glue, therefore, oily glue still has a certain range of applications in the market

[0005] Hot melt is an adhesive made of ethylene-vinyl acetate (EVA) co-polymer (commonly known as resin), mixed with other additives. This glue has a certain smell and is still an environmentally friendly product. The biggest problem with the glue is its slow speed and low efficiency. It can only be used in some manual work, and it is difficult to apply it in the large-scale carton packaging process. In addition, the glue also has the problem of high cost

[0006] At present, there are some water-based sealing adhesives on the market, but there are generally problems of slow drying speed and low bonding strength. The oiling process is a kind of coating wax solidified on the surface of the color printing paper. Because the surface of the coating is relatively smooth, it is a difficult-to-stick substance, and it is difficult to bond with ordinary water-based sealing glue.

Images