Patent ID: 6835256
Filing Date: 2004-12-28
Classification: A44B,B29C,B32B,D04H,Y10T

Abstract:
A method of making an elastic laminate composite, comprising the steps of:providing a melt blowing apparatus comprising a die and a rotating collector drum; providing a first nonwoven web overlaying the collector drum, wherein the nonwoven web comprises a material selected from the group consisting of a melt blown nonwoven material, a spunbond nonwoven material, a spun laced nonwoven material, a staple carded web, an air laid web and a wet laid web; providing a scrim overlaying the nonwoven web and the collector drum comprising spaced-apart filaments oriented substantially in the machine direction that are perpendicular to spaced-apart filaments oriented substantially in the cross direction; providing a series of substantially parallel, spaced-apart elastic filaments overlaying the nonwoven web and scrim on the collector drum, wherein the elastic filaments are oriented substantially in the machine direction and wherein the elastic filaments are stretched at least 50% beyond their relaxed length; advancing the first nonwoven material, scrim and the overlaying stretched elastic filaments to a position beneath the melt blowing die by rotating the collector drum, melt blowing fibers comprising a pressure-sensitive adhesive from the die into the elastic filaments; providing a second nonwoven web downstream from the die wherein the second nonwoven web comprises a material selected from the group consisting of a melt blown nonwoven material, a spunbond nonwoven material, a spun laced nonwoven material, a staple carded web, an air laid web and a wet laid web; pressure laminating the second nonwoven web onto the blown fiber adhesive, the elastic filaments and the first nonwoven web, by advancing the layers through a nip formed between the collector drum and a calender roll to form an elastic laminate composite comprising the first nonwoven web, the elastic filaments, the blown fiber pressure-sensitive adhesive web and the second nonwoven web; and allowing the stretched elastic filaments to relax and collecting the elastic laminate composite on a winder roll.