Macro-molecular leakage-free self-adhering aluminum foil and manufacturing method thereof

Abstract

A macro-molecular leakage-free self-adhering aluminum foil has two layers of aluminum foil compounded using a PET film, and the other surfaces of each layer coated with a modified PE adhesive layer respectively; or air gaps in one surface or two surfaces are filled with nano-aluminum to form a permeable air gap-free surface. The foil has advantages: 1, high folding resistance, fatigue resistance and strength 2, wrapping self-adhering performance is good, and stripping strength formed after adhesion is several times as high as that of the prior art; 3, air gaps in the surface of the aluminum foil filled with nano-aluminum powder result in improved compactness; manufacture from low-grade aluminum foil, and so that rolling precision requirements are lowered, and manufacturing cost reduced; 4, insulating strength is high, shielding effect is good, the return loss phenomenon is avoided, and tensile strength is good.

Description

TECHNICAL FIELD[0001]The present invention relates to a micro-molecular, leakage-free double-foil self-adhering aluminum foil which has good folding resistance and fatigue resistance, high strength, good shielding property and no return loss, and also has high-reliability self-adhesion strength, and a manufacturing method thereof, belonging to the field of communication auxiliary materials.BACKGROUND ART[0002]The preceding patent CN201489850U, entitled “High-strength Double-surfaced Self-adhesive Aluminum Foil” possessed by the applicant comprises an aluminum foil and is characterized in that a layer of bonded adhesive is provided between two surfaces of the aluminum foil and a polyethylene terephthalate (PET) film respectively, and the surface of the PET film (1) is provided with a self-adhesive film. The need for improvement lies in that: in the production process of a common aluminum foil, due to lack of purity of aluminum ingots or presence of impurities and owing to the surface...

AI Technical Summary

Benefits of technology

The present invention is a new type of aluminum foil that is designed to overcome the shortcomings of existing aluminum foils. It is made up of a large number of single macromolecules that are tightly connected. This new foil is leakage-free, has good folding resistance and fatigue resistance, is strong, and has good shielding properties. It can be used to fill or repair gaps and holes in the surface of the foil, making it easier to seal and secure. The new foil can also improve the insulating strength and shielding effect of the aluminum foil, making it useful for high-speed data transmission. Overall, this new technology simplifies the manufacturing process, reduces the cost, and provides a more reliable and high-quality aluminum foil for various applications.

Problems solved by technology

The need for improvement lies in that: in the production process of a common aluminum foil, due to lack of purity of aluminum ingots or presence of impurities and owing to the surface gloss of a rolling roll or other factors, the rolled aluminum foil contains micropores and other defects, and these defects directly result in the communication signal attenuation and increased return loss of the wrapped cable.

The shortcomings are as follows: it is still not possible to solve the problem that pore and gap defects occur on the surface of the rolled aluminum foil due to small impurities of aluminum itself and unclean roll surface in the aluminum foil rolling process, and these pores and gaps will result in attenuation of a communication signal, interference of external signals to the communication signal and occurrence of return loss phenomenon when the aluminum foil is used for wrapping communication cables and cable shields.

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