Ultraviolet shielding transparent plastic packaging film

Abstract

The invention discloses an ultraviolet shielding transparent plastic packaging film. The packaging film sequentially comprises a polyester film, an ink layer, a first ultraviolet shielding adhesive layer, a barrier layer, a second ultraviolet shielding adhesive layer and a heat sealing layer from outside to inside, the thickness of the ultraviolet shielding transparent plastic packaging film ranges from 100 micrometers to 250 micrometers. The thickness of the polyester film layer is 30-80 [mu] m, the thickness of the ink layer is 1-5 [mu] m, the thickness of the first ultraviolet shielding adhesive layer is 5-15 [mu] m, the thickness of the barrier layer is 5-30 [mu] m, the thickness of the second ultraviolet shielding adhesive layer is 10-30 [mu] m, and the thickness of the heat sealing layer is 40-80 [mu] m; methoxycinnamate, octocrilene and a hydrophobically modified zinc oxide ultraviolet shielding agent are added into the first ultraviolet shielding layer and/or the second ultraviolet shielding layer. The transparent plastic packaging film provided by the invention is good in ultraviolet blocking and shielding effect and excellent in appearance performance, and effectively prevents an ultraviolet absorbent from diffusing to contents.

Description

technical field [0001] The invention relates to the technical field of packaging films, in particular to an ultraviolet shielding transparent plastic packaging film. Background technique [0002] Transparent film packaging, under the light, people can clearly see the goods in the package. Its bright and beautiful colors, exquisite and eye-catching appearance, etc. can be seen at a glance, which helps consumers understand the specific conditions of the goods, improves consumers' desire to buy, and has a good understanding of the products. Make the right judgment. However, there is a big defect in highly transparent packaging, that is, under the action of light, the product will undergo a chemical reaction. Electronic light-emitting devices are sensitive to water vapor and require high-barrier film packaging, but the light radiation emitted by them has attracted more and more attention in recent years. Under long-term irradiation in life and work, it is easy to cause damage t...

AI Technical Summary

Problems solved by technology

However, there is a big defect in high-transparency packaging, that is, under the action of light, the product will undergo a chemical reaction.

Electronic light-emitting devices are sensitive to water vapor and require high-barrier film packaging, but the light radiation emitted by them has attracted more and more attention in recent years. Under long-term irradiation in life and work, it is easy to cause damage to human eyes and skin

[0003] The existing technology is to use inorganic ultraviolet absorbers such as zinc oxide or titanium dioxide, but after adding them to the polymer substrate to form a film, the nanoparticles are not cross-linked with the plastic polymer chains, and the presence of nanoparticles will affect the gas barrier properties of the film. , and the inorganic UV absorber also has the risk of escaping into the contents during the long-term packaging

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