Environment-friendly degradable kraft ink packaging bag and preparation method thereof

Abstract

The invention discloses an environment-friendly degradable kraft ink packaging bag and a preparation method thereof. The packaging bag is sequentially composed of a transparent layer, a kraft layer, a bonding layer, a barrier layer and a hydrophobic and oleophobic layer from outside to inside, wherein the transparent layer is prepared from a polylactic acid-glycolic acid copolymer, polyvinyl butyral and titanium dioxide nanoparticles; the bonding layer is a polyurethane adhesive film; the barrier layer is an aluminum foil film; and the hydrophobic and oleophobic layer is prepared from polysiloxane resin, nano-silicon dioxide, absolute ethyl alcohol, isopropanol, an epoxy silane coupling agent and an ultraviolet curing hot melt adhesive. The environment-friendly degradable kraft ink packaging bag has excellent barrier property under the synergistic effect of a multi-layer structure, and can effectively block oxygen, water vapor, light and the like, so the quality and the storage life of the ink are ensured, and ink residues are reduced. The preparation method of the packaging bag comprises the steps of manufacturing of a composite material, coating of the hydrophobic and oleophobic layer, and bag manufacturing. The raw materials adopted in the preparation process are all environment-friendly materials and can be biodegraded or recycled.

Description

technical field [0001] The invention relates to a packaging container, in particular to an ink packaging bag. Background technique [0002] With the increasing emphasis on environmental protection issues in national policies, the environmental protection requirements for the printing industry have been increasing year by year in recent years. According to incomplete statistics, the global average annual consumption of ink tin cans is 3.5-4 billion, and the domestic average annual consumption of ink tin cans is about 1.5 billion. These tin cans cause a large amount of solid waste pollution. Ink tin can packaging has obvious disadvantages of ink residue, so flexible packaging has become an inevitable trend in the development of ink packaging. The publication number is CN109080967A which discloses a kind of ink packaging bag, which changes the way of traditional ink tin can packaging and solves the problem of ink residue, but it uses materials such as polyethylene terephthalat...

AI Technical Summary

Problems solved by technology

The publication number is CN109080967A which discloses a kind of ink packaging bag, which changes the way of traditional ink tin can packaging and solves the problem of ink residue, but it adopts materials such as polyethylene terephthalate in the preparation process. This material is difficult to degrade and is not environmentally friendly

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