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    • 2. 发明申请
    • Breathable films
    • 透气膜
    • US20070123650A1
    • 2007-05-31
    • US11288631
    • 2005-11-28
    • Juan AguirreMark MillerDavid Turner
    • Juan AguirreMark MillerDavid Turner
    • C08L53/00
    • C08L23/10C08L23/16C08L53/02C08L2666/02
    • A polymeric composition having a MFR of less than 2 g/10 min. which when formed into a film has an oxygen transmission rate of equal to or greater than 300 cc/100 in2/24 h at 73° F. and 0% relative humidity per ASTM D 3895 and a water vapor transmission rate of equal to or greater than 0.5 g/100 in2/24 hrs at 100° F. and 100% relative humidity per ASTM F 1249. A polymeric film having a 2% secant modulus in the machine direction of 300 MPa to 700 MPa; an oxygen transmission rate of greater than 300 cc/100 in2/24 h at 100° F., a water vapor transmission rate of greater than 0.5 g/100 in2/24 hrs at 100° F. and 100% relative humidity; an Elmendorf tear strength in the MD of from 50 g to 400 g; an Elmendorf tear strength in the transverse direction of from 150 g to 400 g, a dart drop strength of from 200 g to about 500 g, a haze of from 0% to 85% and, gloss at 45° of from 5% to 70%.
    • MFR小于2g / 10min的聚合物组合物。 当形成膜时,在73°F和0%相对湿度下,根据ASTM D 3895和0℃的水,在32℃/ 24小时内具有等于或大于300cc / 100的氧气透过率 蒸汽透过率在100°F和100%相对湿度/ ASTM F1249下在0.2℃/ 24小时内等于或大于0.5g / 100。一种具有2%割线模量的聚合物膜 机器方向为300MPa至700MPa; 在100°F的2小时/ 24小时内的透氧率大于300cc / 100,在2℃下的水蒸汽透过率大于0.5g / 在100°F和100%相对湿度下24小时; 埃尔门多夫MD的撕裂强度从50克到400克; 在150克至400克横向方向的埃尔曼多夫撕裂强度,落镖从0%,在45℃的5%下降为200g的强度至约500克,的雾度为85%并将,光泽度至70 %。