| 摘要 |
<p>Polyolefin/filler breathable films may be produced by machine or transverse direction orientation using interdigitating grooved rollers (16, 26). Biaxial orientation to similarly produce breathable films may be accomplished by the same method. By heating the rollers (16, 26), the breathablity of the film is increased without increasing the depth of engagement of the interdigitating rollers.</p> |
