There are to types of distinguished refractive interference structures: refractive-type miltilayers and bragg-type multilayers,An example of a multi-layer structure is the peacock feather that consists of alternate layers of melamine and keranine as shown in figure 1 on page 18.
Zero gravity technology and customizable software are the key point of Duplex Diameter which introduces to the market.Duplex is the traditional materials slitting onto to two rewinding shafts,high speed,maximum diameter up to 800mm and narrow bands;Simplex is to rewind/trim rolls up to 1000mm diameter.
All polyolefin based materials undergo oxidation reactions which may occur at every stageof the polymer's life cycle,during manufacture and storage as well as processing and end use.Polyolefins undergo a wide varity of oxidative reactions that eigher cause chain scission(decreased molecular weight) or molecular enlargements(increased molecular weight).Oxidation may change the appearance of the polymer as well as mechanical properties.The addition of antioxidants is the commonly used method to protect polymersagainst oxidation,and thus retarding the resulting aging of the polymers.
What do we expect from contemporary and functional packaging?
After the installation of an inspection ysytem the defects will be taught and classified quickly.Typical defects are gels,fish eyes,black specs,holes,insects,oil stains,but also coating voids.And now the real work starts-defining which defects are critical for which product.
There is no case after the installation pf a web inspection system