Patent ID: 6824734
Filing Date: 2004-11-30
Classification: B29C,B29K,Y10T

Abstract:
A method of producing a latent elastic, cross-direction-oriented film, comprising the steps of:extruding a thermoplastic elastomer, wherein the thermoplastic elastomer comprises between about 55% and 90% elastomeric resin and between about 10% and 45% polyethylene; blowing the extruded thermoplastic elastomer to form a first blown bubble; stretch-thinning the thermoplastic elastomer while blowing the thermoplastic elastomer; simultaneously cooling and collapsing the first blown bubble; heating and inflating the stretch-thinned thermoplastic elastomer to form a second blown bubble, thereby orienting the thermoplastic elastomer in a cross direction while heating and inflating the thermoplastic elastomer; and simultaneously cooling, collapsing, and winding the second blown bubble, thereby forming a latent elastic, cross-direction-oriented film.