MULTI-LAYER ELASTIC FILMS

The present invention is directed to a multi-microlayer film that includes a plurality of alternating coextruded first and second microlayers, wherein the first microlayers include an elastomeric polyolefin polymer composition, and further wherein the second microlayers include a styrenic block copolymer composition. The multi-microlayer films provide good elastic performance at relatively low cost. The present invention is directed to a multi-microlayer film that includes a plurality of alternating coextruded first and second microlayers, wherein the first microlayers include an elastomeric polyolefin polymer composition, and further wherein the second microlayers include a styrenic block copolymer composition. The multi-microlayer films provide good elastic performance at relatively low cost. The present invention is directed to a breathable multi-microlayer film material that includes a plurality of alternating coextruded first and second microlayers, wherein the first microlayers comprise an unfilled first polymer composition, and further wherein the second microlayers comprise a second polymer composition and filler particles. The multi-microlayer films may be used in disposable absorbent products, have increased breathability, and generally retain their integrity and strength during processing and use. La presente invención se dirige a una película de múltiples microcapas que incluye una pluralidad de primeras y segundas microcapas coextruidas alternas, en donde las primeras microcapas incluyen una composición polimérica de poliolefina elastomérica, y en donde además las segundas microcapas incluyen una composición de copolímero de bloque estirénico. La película de múltiples microcapas proporciona buen comportamiento elástico a un costo relativamente bajo.