How can aluminum foil and aluminum membrane be distinguished?
Six, knife scraping: aluminum foil with a knife can scrape the aluminum chip, then the aluminized film will not scratch the aluminum chip, and will be transparent on the film.Seven, fire fire point: aluminum foil is not easy to burn, the aluminum layer will rollback, burn after leaving aluminum foil packaging slag grey. When aluminum film is burned, the combustion of different plastic film can occur, and there is no residue of aluminum residue.
Three, handle: packaging aluminum foil is hard, crisp feel thick and heavy, hand packing aluminum film than is light and soft aluminum foil packaging.Four, folding aluminum foil packaging easy folding dead dead fold marks, aluminum package can not folded pleat die India, and will soon rebound.Five, twist and twist: foil packaging, twisting, coalescence is not easy to rebound, the aluminum layer will fracture. Aluminized film packaging, twisting will soon kink, will be scattered, the aluminum layer will not have obvious cracks.
A watch, two, feel, three, fold, four, twist, 5, knife scraping, 6, fire method, to help you identify whether plastic composite packaging is made of aluminum foil or aluminum film material.Two, watch: packaging aluminum layer brightness is not as bright as aluminized film, that is, made of aluminum foil packaging, it is better to use aluminum film packaging, high brightness. The aluminum layer of aluminum foil is thick, so it has strong light shielding property, and the aluminized coating is very poor in light shielding, so it can be made of aluminized film through bright light. Otherwise, the light transmittance is made with aluminum foil. Because the brightness of the aluminized film is bright, the reflection of the aluminum foil is better than that of the aluminized film, but the refraction and shielding of the aluminum foil is better than that of the aluminized film. The aluminum foil is silver white or silver gray, and the aluminum film is silver or black.
