Such a wonderful foil fabrication process will produce aluminum foil we usually use, but everything has advantages and disadvantages, aluminum foil will have shortcomings, so what are the disadvantages? Take a look!
(1) Pinhole
Pinhole is the primary disadvantage of aluminum foil(aluminum foil tape). Original guess, on a roll, rolling oils, and even dust in the air to reach the scale 6μm or so into the roll gap will cause pinholes, so 6μm foil pinholes is not possible, only with the number and size evaluate it. Because improved foil rolling conditions, particularly dust and rolling oil usefully filtering and convenient roll changing system settings, the number of aluminum foil pinhole increasingly dependent on the quality and processing of metallurgical material shortcomings, as is usually the pinhole material shortcomings fall, (aluminum foil tape)it is difficult to find the original link corresponding disadvantages.
Usually think, pinhole primary and gas content, adulterated, segregation and related compounds. Take effective aluminum liquid purification, filtration, grain refiners have helped reduce pinholes. Of course, the choice of alloying hardening techniques such as material improvements also help to reduce pinholes. High-quality hot-rolled aluminum foil rolling 6μm pinhole in 100 / m or less. When the casting material when better purification, 6μm foil pinholes in the 200 / m or less. Aluminum foil rolling process, pinholes or many elements, even disastrous, per square meter of the other thousands of pinholes are not rare. Useful rolling oil filter, (aluminum foil tape)replace the roll short-term approach and dust are cut aluminum foil pinhole conditions necessary, and use big rolling force, rolling little tension will also help reduce pinholes.