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All-plastic gas phase rust prevention complex film and production method thereof

A technology of vapor phase anti-rust and production method, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., and can solve the problems that waste cannot be recycled, paper and plastic resources are wasted, and anti-rust paper cannot be degraded naturally and other issues, to achieve the effects of environmental protection, waste reduction, and good packaging anti-rust performance

Inactive Publication Date: 2009-11-18
武汉市江夏区江南实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the physical strength of only one layer of PE film is obviously not enough. Using PE woven cloth to laminate PE layer with paper requires more procedures and higher cost.
The problem is that although this kind of anti-rust paper has good performance, it is not easy to separate after paper-plastic composite, and its waste cannot be recycled after unpacking. Because paper cannot be degraded naturally, it will also cause great pollution to the environment

Method used

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  • All-plastic gas phase rust prevention complex film and production method thereof
  • All-plastic gas phase rust prevention complex film and production method thereof
  • All-plastic gas phase rust prevention complex film and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Including multi-layer co-extrusion film layer 1, PE or PP coating layer 2, PE or PP foam film layer 3, multi-layer co-extrusion film layer is 3 layers, the formed multi-layer co-extrusion film layer and foam The film layer is compounded together by the coating layer 2 with a compound machine, and then the foamed film layer is coated with a gas-phase corrosion inhibitor 4 by a coating machine. The solid content of the gas-phase corrosion inhibitor in each square meter of the foamed film layer is 15g. The thickness of the foam film is 0.1-0.5 mm, and the thickness of the whole composite film is 0.2-1.0 mm. The width can be produced according to customer requirements, and the maximum width can reach 4000 mm. When used, the foamed film layer is inside, and the multi-layer co-extrusion film layer is outside.

Embodiment 2

[0023] Including foaming film layer 3 and multi-layer co-extrusion film layer 1, the multi-layer co-extrusion film layer is extruded by the extruder and poured on the foaming film layer, and the multi-layer co-extrusion film layer and the foaming film layer are formed by a compound machine. The multi-layer co-extruded film layer is 3-5 layers, and the foamed film layer is coated with multi-layered co-extruded film, and then the foamed film layer is coated with gas phase corrosion inhibitor 4 by a coating machine. The thickness of the bubble film is 0.1-0.5 mm, and the thickness of the whole composite film is 0.15-1.0 mm.

Embodiment 3

[0025] Including foaming film layer 3 and non-foaming film layer 1, when the extruder extrudes the multi-layer co-extruded film, the outermost layer of film is foamed and an appropriate amount of hydrophilic substances are added to it, so that the gas phase slows down. The other several layers are not foamed, and then extrude the multi-layer co-extruded film containing the foamed film layer at one time, wherein the foamed film layer is 1 layer, and the non-foamed film layer is 4 layers. The whole multi-layer The co-extrusion film has 5 layers, adopts an asymmetric structure, and the material distribution of each layer can be: PE foam film / EVA / PA / EVA / PA (only one of the raw material combinations); and then on the foam film layer Coating gas phase corrosion inhibitor 4, the solid content of gas phase corrosion inhibitor per square meter of foamed film layer is 15g.

[0026] The multi-layer co-extrusion film production of the embodiment of the present invention 2,3 is carried out...

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Abstract

The invention relates to a foaming spreading all-plastic gas phase rust prevention complex film used in steel antirust and protective wrapping and a production method thereof. The complex film comprises multilayer co-extrusion films, one side of the multilayer extrusion films is covered by foamed coatings, and the foamed coating is coated with a gas phase inhibitor. The production method comprises the following steps: multilayer co-extrusion films are extruded on the foamed coating by an extruding machine; a complex film is formed by combining the multilayer co-extrusion films and foamed coatings, or when multilayer co-extrusion films are extruded by the extruding machine, the outermost layer is foamed and added with appropriate hydrotropic substance to form multilayer co-extrusion films with the foamed coatings and finally the foamed coatings are coated with the gas phase inhibitor. The invention has good performances of antirust wrapping and protective wrapping, the physical property and mechanical strength of the multilayer co-extrusion films is obviously better than a monolayer plastic film, and the used antirust complex film can be completely recycled, thus reducing the waste and benefiting for the environmental protection; the invention has simple production process and low production cost.

Description

technical field [0001] The invention relates to a foam coating type all-plastic vapor phase antirust composite film for steel antirust and protective packaging and a manufacturing method thereof, belonging to the technical field of steel packaging materials. Background technique [0002] In the prior art, the processed iron and steel metal products, such as thin plate steel coils, are usually packaged with vapor phase antirust paper to play the dual role of antirust and protection. The existing vapor phase antirust paper is based on paper, coated with antirust and corrosion inhibitor on its surface, and a layer of PE film or a layer of PE woven cloth is compounded on the other side of the paper to enhance its strength and corrosion resistance. Water and moisture resistance. However, the physical strength of compounding only one layer of PE film is obviously not enough. Using PE woven cloth to compound the PE layer and paper through the laminating film requires many procedur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/18B32B27/06B32B27/08B32B27/32B32B27/30B32B33/00
Inventor 刘威王菊珍陈立艳潘启顺刘雄文
Owner 武汉市江夏区江南实业有限公司