Process for forming a multilayer coextruded article and articles therefrom

A process for coextruding a 5-layer article comprising coextruding at a selected coextruding temperature:

• (i) two outer polymer resin layers each comprising an outer layer polymer resin having at the selected coextruding temperature:
• a) a viscosity;
• b) a melting temperature;
• and c) a degradation temperature;
• (ii) two intermediate polymer resin layers disposed between a core layer and the two outer layers, the two intermediate resin layers each comprising an intermediate layer polymer resin having at the selected coextruding temperature:
• a) a viscosity;
• b) a melting temperature;
• and c) a degradation temperature;
• and
• (iii) a core layer comprising a core layer polymer resin having at the selected coextruding temperature:
• a) a viscosity;
• b) a melting temperature;
• and c) a degradation temperature;
• wherein at each polymer resin interface the ratio of the outermost polymer resin viscosity to the next innermost polymer resin viscosity at the coextruding temperature is less than or equal to about 1 and the coextruding temperature is above the melting temperature of the highest melting resin and below the degradation temperature of the lowest degrading resin to form a 5-layer article.