US 11,690,767 B2 · Apparatus and methods for securing elastic to a carrier web

Abstract

Apparatus and methods are provided to allow for creation of an elastic laminate. Non-stretched elastic can be laid at peaks over a nonwoven layer contained in valleys and atop peaks. Stretched elastic can be laid over tented nonwoven to create nonwoven tunnels when a second nonwoven is laid atop the first nonwoven and elastic, and the tunnels resist un-stretching of stretched elastic strands by frictional or obstruction forces. An elastic assembly or structure comprising a first and second layer of material bonded at spaced apart bond sites is disclosed, with a plurality of elastic strands disposed in a non-linear manner between said first and second layer of material, so that said strands meander in a cross-machine direction and traverse a machine direction line, restraining movement of the strands by frictional forces between the strands and the non-woven layers.

Claims10

Dependent claims

An elastic assembly comprising:

a first layer of material having a lengthwise direction and a crosswise direction;
a second layer of material having a lengthwise direction and a crosswise direction;
a plurality of first bond points bonding the first and second layers of material together and being formed in a first rectilinear column, the first bond points being spaced apart from one another in the lengthwise direction of the layers of material, each first bond point having a first crosswise side and an opposite second crosswise side;
a first elastic strand disposed between the first and second layers of material,
wherein the first elastic strand is positioned on the first crosswise side of a first one of the first bond points and is positioned on the second crosswise side of a second one of the first bond points;
and
wherein the plurality of first bond points trap the first elastic strand between the first and second layers.

4 more elements

An elastic assembly comprising:

a first layer of material having a lengthwise direction and a crosswise direction;
a second layer of material having a lengthwise direction and a crosswise direction;
a plurality of first bond points bonding the first and second layers of material together and being formed in a first rectilinear column, the first bond points being spaced apart from one another in the lengthwise direction of the layers of material, each first bond point having a first crosswise side and an opposite second crosswise side;
a plurality of second bond points bonding the first and second layers of material together and being formed in a second rectilinear column which is offset in the crosswise direction of the layers of material from the first rectilinear column, the second bond points being spaced apart from one another in the lengthwise direction of the layers of material, each second bond point having a first crosswise side and an opposite second crosswise side, the first crosswise sides of the second bond points being adjacent to the second crosswise sides of the first bond points;
a first elastic strand disposed between the first and second layers of material, wherein the first elastic strand is positioned on the first crosswise side of a first one of the first bond points and is positioned on the second crosswise side of a first one of the second bond points;
and
wherein the plurality of first and second bond points trap the first elastic strand between the first and second layers.

4 more elements

Dependencies are inferred from the claim text.

Apparatus and methods for securing elastic to a carrier web

Life of this patent

Apparatus and methods for securing elastic to a carrier web

Life of this patent

Abstract

Claims10