Low temperature resistance dual-surface coating polyester aluminum plating film and production method thereof

Abstract

The invention discloses a low temperature resistance dual-surface coating polyester aluminum laminated film, which is made from polyester base materials by coating on two surfaces, wherein one surface is coated with a polymethyl methacrylate (PMMA) composite coating, the other surface is coated with a polyurethane composite coating, the polyurethane composite coating is made from raw materials with parts by weight: aqueous polyurethane emulsion 30-40, water-epoxy resin emulsion 10-15, glycerol 2-4, rosins 2-4, acyclic acids 2-4, epoxidized soybean oil 1-2, turkey red oil 0.3-0.5, nano talcum powder 2-4, nanometer titania 1-2 and water 40-50. The low temperature resistance dual-surface coating polyester aluminum plating film can effectively an adhesion phenomenon, is excellent in barrier property and high in peel strength, has excellent acid and alkali resistance, improves compound fastness of the back surface of aluminum laminated films, is excellent in use performance, has excellent low temperature resistance simultaneously, is suitable to be used in low temperature cold environment, and is wide in appliance range and high in practical value.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a low-temperature resistant double-sided coated polyester aluminized film and a production method thereof. Background technique [0002] With the increasing development of the commodity economy, the role of commodity packaging is becoming increasingly important, especially for commodities with high quality assurance requirements such as food and medicine. In order to improve the circulation cycle and shelf life of commodities, packaging with high barrier performance packaging materials is often the most effective means. . At present, the commonly used packaging material is polyester aluminized film, and its common composite structure is "PET / VMPET / PE" three-layer composite. This structure has good barrier properties, but it will immediately delaminate when it meets water after peeling off It has the function of acid and alkali resistance, and the adhesion performance...

AI Technical Summary

Problems solved by technology

At present, the commonly used packaging material is polyester aluminized film, and its common composite structure is "PET / VMPET / PE" three-layer composite. This structure has good barrier properties, but it will immediately delaminate when it meets water after peeling off It has the function of acid and alkali resistance, and the adhesion performance of the aluminum layer after aluminization is poor, which affects the performance of the composite film

The general chemical coating film is only coated with polyurethane material on one side of the polyester film, so that the polyester aluminized film has a certain improvement in the barrier properties and the peel strength of the aluminized surface, and it does not have acid and alkali resistance.

At the same time, with the continuous development of the packaging industry, the performance requirements for aluminized films are increasing day by day, and new requirements are also put forward for the composite fastness and acid and alkali resistance of the back of the aluminized film. Improve

And the traditional aluminized polyester film is prone to become brittle and peel off when used at low temperature, which affects the use, so it is necessary to improve its low temperature resistance

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