| 摘要 |
<p>An oriented multilayer film comprises a barrier layer of polymerized ethylene vinyl alcohol, and an orientation-compatible polymeric layer having a modulus of at least about 4 x 10<4> psi. The a barrier layer occupies from about 2 to 15 volume percent of the oriented multilayer film, and has a thickness of from about 0.01 to 0.75 mils. The polymerized ethylene vinyl alcohol has an ethylene content of from about 38 to 48 weight percent. The orientation compatible layer has a thickness of from about 0.49 to 4.5 mils. The multilayer film is oriented at a temperature of from about 165 DEG F to 212 DEG F, has an orientation ratio greater than 9, an oxygen permeability at 0% relative humidity of from about 1 and 6 cm<3>-mil/day-m<2>-atm, and a total thickness of from about 0.5 to 5 mils.</p> |
