Expandable web with in-situ combination of expansion material components
AssigneePregis Innovative Packaging LLC
InventorThomas D. Wetsch
Life of this patent
Estimating the term…
Abstract
A method for making an expansion wall is provided. The method can include applying a matrix to a first ply and applying an expansion element to the surface of the matrix. A second ply is applied over the first ply to trap the matrix and expansion element therebetween. The applied expansion element is entrained into the applied matrix to provide an expansion material that is configured to expand to, and solidify in, an expanded condition upon activation.
Claims27
A method for making an expansion wall, comprising:
- applying a matrix to a first ply;
- applying an expansion element to a surface of the matrix;
- applying a second ply over the first ply to trap the matrix and expansion element therebetween;
- and
- entraining the applied expansion element into the applied matrix to provide an expansion material that is configured to expand to, and solidify in, an expanded condition upon activation.
A method for making an expansion-wall web, comprising:
- applying a matrix to a first ply;
- applying an expansion element to a surface of the applied matrix;
- and
- applying a second ply over the first ply to trap the matrix and expansion element therebetween, wherein the matrix is selected such that after expansion, the expanded matrix solidifies to provide padding between the first and second plies.
A device for producing an expansion-wall web, the device comprising:
- a matrix applicator for applying a matrix to a first ply;
- an expansion element applicator to apply an expansion element onto the surface of the matrix;
- and
- an entrainment device for entraining the applied expansion element into the matrix, such that activation of the expansion element will cause the matrix to expand to and solidify in, an expanded condition.
An expansion wall assembly, comprising:
- a first ply;
- and
- an expansion material applied to the first ply, wherein the expansion material includes a matrix and an expansion element applied to the surface of the matrix such that the interior of the matrix is substantially free of expansion element, and wherein the expansion element causes the expansion material to expand to, and solidify in, an expanded condition.
Dependencies are inferred from the claim text.