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FORMING STRUCTURE, APPARATUS AND METHOD FOR FORMING A BREATHABLE, LIQUID IMPERMEABLE, APERTURED FORMED FILM AND FILM MANUFACTURED THEREBY
FORMING STRUCTURE, APPARATUS AND METHOD FOR FORMING A BREATHABLE, LIQUID IMPERMEABLE, APERTURED FORMED FILM AND FILM MANUFACTURED THEREBY
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机译:形成透气,液体不可渗透的薄膜形成薄膜和膜的形成结构,装置和方法
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摘要
A forming structure includes an outer surface configured to receive a polymer web, an inner surface, a thickness between the outer surface and the inner surface, and a plurality of openings extending through the thickness at an acute angle relative to a plane tangential to the outer surface. Each of the plurality of openings has a shape at the outer surface defined by a first ellipse having a first major axis and a first minor axis and a second ellipse having a second major axis and a second minor axis. The first major axis is substantially parallel to a machine direction and coincides with the second minor axis. The second major axis is substantially parallel to a transverse direction orthogonal to the machine direction and is offset from the first minor axis.
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