Fitment with blend component and flexible container with same

A process comprising:

• A. providing a fitment having a top portion, a base, and a channel extending through the top portion and the base, the fitment composed of a polymeric composition comprising
• (i) from 70 to 90 weight percent of a high density polyethylene (HDPE) having a density from 0.940 g/cc to 0.970 g/cc, a melt temperature, Tm, greater than 125° C., and a melt index from 1 g/10 min to 50 g/10 min;
• and
• (ii) from 30 to 10 weight percent of an olefin-based elastomer having a density from 0.860 g/cc to 0.905 g/cc and a Tm less than 125° C.;
• B. placing the base between two opposing multilayer films, each multilayer film having a respective seal layer comprising an olefin-based polymer;
• C. sealing the base to each multilayer film under heat seal conditions;
• and
• D. forming a hermetic seal between the fitment and the multilayer films,
• wherein a fitment base 2 has the same structure as the base and base 2 consists of an HDPE having a density from 0.940 g/cc to 0.970 g/cc, a Tm greater than 125° C., and a melt index from 1 g/10 min to 50 g/10 min, the process further comprising
• sealing the base under a second set of pressure and dwell time (condition 2), wherein the hermetic seal is formed at a temperature 1, and temperature 1 is less than a temperature 2 required to form a hermetic seal with base 2 under condition 2.