In order to improve polyethylene characteristics, it has been modified in the following ways: With the decrease of polyethylene melting index, its recyclability is impaired however it features better resistance to impact, chemicals and wearing as well as having better sliding performance. When the density increases, the impact resistance and transparency decrease and there is a rise in melting temperature, density, strength, chemical resistance and impermeability to gas and odour. The main features of polyethylene are its density and melting index. It is chemically resistant to acids, alkalis, salt solutions and it is light-permeable. It is not soluble in any of the normal solvents at room temperature. It features high flame resistance and, once ignited, burns without soot. PE - polyethylene is a thermoplastic, elastic and nontoxic polymer. However nitrile is not as elastic as latex, therefore it is imperative to choose correct glove size. Nitrile is not as "sticky" as latex and the majority of people do not have problems when putting on and taking off the gloves. Nitrile gloves are suitable to use at high temperatures, however they should be stored at low temperatures, in a dry and dark place. Nitrile gloves are widely used in machine repair shops and households where there is direct contact with lubricants, automotive petrol or other chemicals. After having improved production processes, the characteristics of nitrile gloves can be closely compared to their latex counterparts in terms of level of comfortability, elasticity (elongation limit 500%) and adaptability to hand shape. The nitrile glove is 3 times more puncture resistant than latex or a vinyl. Another important feature of nitrile gloves is their durability. However, Nitrile has more advantages other than being made of synthetic rubber that is not an allergen. Nitrile gloves were developed as a solution for the growing group of people that are developing allergies to latex gloves. Nitrile is a synthetic acrylonitrile and butadiene polymer.
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