| 主权项 |
1. A laminated structure comprising a microporous film bonded in a face to face relationship with a plexifilamentary nonwoven web with an adhesive layer situated in contact with a least a portion of both the microporous film and the nonwoven web, wherein;
the film contains filler in an amount between 30% and 50% by weight of the total film weight, and between 40% and 90% of polyolefin polymer by weight of the total film weight, the film has a thickness of between 12 and 25 microns, the film is bonded to the plexifilamentary web by adhesive, the laminated structure has a water vapor transmission rate (WVTR) as measured by the EN ISO 12572 Climate C method of greater than or equal to 1000 g/m2/day, the basis weight of the laminated structure is at least 55 g/m2, the tensile strength of the laminated structure according to EN ISO 13934-1 is at least 35 Newtons in the machine direction, the tensile elongation of the laminated structure according to EN ISO 13934-1 is at least 8% in the machine direction, the tensile strength of the laminated structure according to EN ISO 13934-1 is at least 35 Newtons in the cross direction, the tensile elongation according to EN ISO 13934-1 is at least 15% in the cross direction, and the laminated structure has a hydrohead according to EN 20811 of at least 200 cm of water. |
