Lightweight blast-mitigating polycarbonate-based laminate system
The present invention provides a lightweight blast-mitigating polycarbonate laminate system comprising at least one polycarbonate sheet, a portion of which is laminated to a glass layer having a thickness between 0.25 times and less than 1 times the thickness of the polycarbonate sheet. The laminate system may further include fasteners to attach the system to a building, positioned to prevent the laminate system from breaking or detaching in case of a blast event.
1. A blast-mitigating polycarbonate laminating system consisting of:
one or two polycarbonate sheets, one polycarbonate sheet having a first thickness; and
one or more glass layers, one glass layer having a second thickness;
optionally, an adhesive layer; and
one or more fasteners to attach the panel to a building;
wherein at least a portion of a polycarbonate sheet is laminated to a glass layer, wherein the second thickness is between 0.25 and less than 1 times the first thickness, wherein the one or two polycarbonate sheets and the one or more glass layers are each components of a panel having an edge and a thickness x, and wherein the fasteners located at a distance of 1.1x to 1.6x from either the edge of the panel or from another fastener.
2. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the second thickness is between 0.5 and 0.7 times the first thickness.
3. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the first thickness is between about ¾ and about 13/16 inches.
4. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the thickness x is about 0.75 inches to about 2.75 inches.
5. The blast-mitigating polycarbonate laminating system of claim 4 , wherein, the thickness x is about 1.75 inches to about 2.25 inches.
6. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the one or two polycarbonate sheets is two polycarbonate sheets.
7. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the fasteners are located at a distance of 1.1x to 1.6x from the edge of the panel.
8. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the fasteners are located at a distance of 1.2x to 1.5x from the edge of the panel.
9. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the fasteners are located at a distance of 1.1x to 1.6x from another fastener.
10. The blast-mitigating polycarbonate laminating system of claim 1 , wherein the fasteners are located at a distance of 1.2x to 1.5x from another fastener.