METHODS AND APPARATUS FOR ELASTIC DEACTIVATION IN A LAMINATE

摘要

A variable interference anvil and knife combination is provided to selectively sever elastics in a laminate and preferably not sever the nonwoven portions of the laminate. The distance between the anvil and the knife can be programmatically altered to provide for smaller or larger gaps as processing speeds are changed.

主权项

1. In a system having a revolving compression blade and a revolving anvil cooperating to present a nip, a method comprising the step of:
spacing a revolving compression blade apart from a revolving anvil during a closest passage between said compression blade and said revolving anvil, said closest passage greater than zero, said closest passage defining a nip gap between the compression blade and the anvil during respective revolutions; changing said nip gap by at least one of the steps of advancing said revolving anvil relative to said compression blade or advancing said compression blade relative to said revolving anvil; receiving in the nip gap a composite web comprising at least two layers; and completely severing at least one layer of said composite web without severing at least another layer of said composite web.