A kind of pp/pet blending environment-friendly waterproof and oil-proof automobile outer wheel cover and its manufacturing method

Abstract

The invention provides a PP / PET blended environment-friendly waterproof and oil-proof automobile outer wheel cover, which includes a hot-melt felt layer, and a waterproof and oil-proof layer is provided on the back of the hot-melt felt layer, and the hot-melt felt layer is made of two layers of PP and PET. A fiber layer made of a mixture of two substances, in terms of mass percentage, the hot-melt felt layer includes 40-60% PP and 60-40% PET, and the square gram weight of the waterproof and oil-proof layer is 80-170g / ㎡ . The invention also provides a preparation method of the automobile outer wheel cover. The automobile outer wheel house of the present invention, PP / PET hot-melt felt composite PE / PA film has simple processing, low cost, excellent cold resistance, temperature resistance, and aging resistance, especially the PE / PA layer effectively solves the problem of porous structure. Disadvantages of water absorption and oil absorption, high-pressure water washing resistance meets GM9531P‑B standard, water splash resistance meets SO 9073‑17 standard, and water absorption resistance meets SAE J913 standard.

Description

technical field [0001] The invention relates to an automobile outer wheel cover and a manufacturing method thereof, in particular to a PP / PET blended environmental protection waterproof and oil-proof automobile outer wheel cover and a manufacturing method thereof. Background technique [0002] Carpet is a floor covering made of cotton, linen, wool, silk, grass and other natural fibers or chemical synthetic fiber materials, which are knitted, tufted or woven by hand or mechanically. It is one of the arts and crafts categories with a long history and tradition in the world. Covering the ground of residences, hotels, gymnasiums, exhibition halls, vehicles, ships, aircraft, etc., it has the effects of noise reduction, heat insulation and decoration. There are many ways to classify carpets. According to the manufacturing process, there are hand-tufted carpets, hand-woven plain weave carpets, hand-tufted carpets, hand-made felt blankets, and machine-made carpets; There are wool ...

AI Technical Summary

Problems solved by technology

[0005] There are generally two types of existing car outer wheel covers: the first one is PE or PP through injection molding and blister molding, the disadvantages are heavy weight, high cost, smooth surface, loud sand and stone knocking noise during the use of the car, and low temperature is easy to be brittle The second is hot-melt felt made by needle punching process, its main component is PP / PET fiber, which is made into outer wheel cover products after heating and molding. The advantages are low cost, light weight, good sound absorption and vibration reduction effect, But because of its porous structure, the waterproof and oil-proof effect is not good during use

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