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DFDVX16 ha inviato un aggiornamento 3 anni, 2 mesi fa
With regards to flexible packaging design, an ESD Antistatic Shielding Bag is any bag made with anti static polymers so that when it rubs or touches other materials it does not create static. Essentially, an anti static bag prevents itself from holding charge . Since it is not holding a charge, it cannot release charge as electrostatic discharges (ESD) when it is laying on a grounded surface. The term “ ant static ” refers to the upper static dissipative range- usually defined as between 1 x 1010 and less than 1 x 1012 ohms/square . Polyethylene and polyesters used in bags for static control are always in this “ anti static ” range.
Commonly LDPE Antistatic Bags are tinted (usually pink or blue) and made of a single layer of polyethylene (PE) with static dissipative coatings sputtered onto them. These bags do not stop ESD, but they prevent the build-up of static charges on their surfaces that precedes ESD. Whether an anti static bag is static shielding depends upon whether it incorporates conductive materials, like aluminum or carbon, into its design. A static shielding bag presents a conductive barrier to ESD in addition to allowing charges to dissipate off it. Static Shielding” as a term usually refers to bags that use aluminum. This gives the bags a silver transparent sheen.
Aluminium Foil Pouches are used for packaging in various commercial markets – food, beverages, cosmetics, pharmaceuticals, automobiles etc. Their wide popularity in the packaging industry is due to their numerous properties. Aluminium is found in abundance in Earth’s crust and can be reshaped and recycled again and again. On the other hand, plastic has a weak tendency to be recycled multiple times as compared to aluminium and thus plastic pouches are sidelined by aluminium foil pouches as a more environment friendly option.