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US 2015/0360380 A1Published application
Methods and apparatus for elastic deactivation in a laminate
AssigneeCurt G. Joa, Inc.
InventorsRYAN FERGUSON, DENNIS FAUCHER, ROBERT E. ANDREWS, GOTTFRIED J. HOHM
Life of this patent
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Abstract
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.
Claims12
An apparatus comprising:
- a knife blade supported for revolution in a first direction about a knife axis;
- an anvil supported for revolution in a second direction about an anvil axis, the anvil having a working anvil surface facing away from the anvil axis;
- a nip having a nip gap formed at a nip position of the knife blade and working anvil surface during respective revolutions, the nip adapted to receive a web material, and
- wherein the nip gap is selectively variable by changing at least one of a stationary position of the knife blade about the knife axis and a stationary position of the anvil surface about the anvil axis.
1 more element
In a system having a revolving knife and a revolving anvil cooperating to form a nip, a method comprising the step of:
- changing a nip gap spacing between the knife and anvil by changing respective revolutional phase positioning of the knife and the anvil.
Dependencies are inferred from the claim text.