Gas-phase rustproof packaging material and manufacturing method thereof

Abstract

The invention relates to a gas-phase rustproof packaging material which comprises a rustproof membrane and a fabric layer. The gas-phase rustproof packaging material is characterized by comprising two layers or three layers of composite structures, wherein the three layers of composite structures sequentially comprise an inner-layer polyolefin rustproof membrane (2) with the thickness of 15Mum to 80 Mum; a middle high polymer fabric layer (1) with the quantitation of 20g/m2 to 80g/m2; and an outer-layer high polymer membrane (3) with the thickness of 15Mum to 80 Mum. The manufacturing method comprises the following steps of: compositing the outer-layer membrane (3) and the fabric layer (1) and then putting on two players, casting the rustproof membrane (2) at the other side of the fabric layer (1) through a membrane laminating machine, and then towing and coiling to finish three-layer coating. The invention has the advantages that: 1. the processing mode of the gas-phase rustproof membrane breaks through the limitation of blown processing under the temperature condition of less than or equal to 200 DEG C; 2. a processing mode of direct membrane-laminating by adopting a casting method is respectively adopted at both sides of a fabric enhancing layer, which reduces a working procedure and has low cost and stable quality; 3. nano-grade high-barrier ingredients are adopted for the outer-layer membrane (3), which ensures that the water vapor permeation amount of the product is reduced by 0.2g/m2*24h-0.4g/m2*24h compared with the traditional similar products; and 4. the spent packaging material can be recycled completely and accords with environment requirements.

Description

technical field [0001] The invention relates to a gas phase antirust packaging material and a manufacturing method. Background technique [0002] At present, the rust-proof packaging of metallurgical steel coils, steel plates, and heavy machinery generally uses fabric-reinforced vapor-phase anti-rust paper. Defects such as oil absorption reduce the effect of anti-rust packaging and affect the anti-rust function of the product. In addition, due to the immaturity of paper-plastic separation technology, the materials are not easy to be completely recycled, resulting in a great waste of resources and environmental pollution. The gradual improvement of environmental protection requirements at home and abroad also limits the application of fabric-reinforced antirust paper. Furthermore, the traditional fabric-reinforced vapor-phase anti-corrosion film is processed by blow molding the vapor-phase anti-corrosion film, and then compounded with the fabric reinforcement layer, which h...

AI Technical Summary

Problems solved by technology

[0002] At present, the rust-proof packaging of metallurgical steel coils, steel plates, and heavy machinery generally uses fabric-reinforced vapor-phase anti-rust paper. Defects such as oil absorption reduce the effect of anti-rust packaging and affect the anti-rust function of the product

In addition, due to the immaturity of paper-plastic separation technology, the materials are not easy to be completely recycled, resulting in a great was