Patent ID: 11885119
Assignee: nan
Field: Surface technology, coating (Chemistry)
Classification: CPC E  B | IPC B  E

Claim 0:
1. A composite fire-rated gasket for use in building construction, wherein the composite fire-rated gasket is a multi-layered structure, comprising:
an elongated flexible flat backing strip having a width and opposing first and second faces;
an elongated intumescent material strip lengthwise adjacent to the first face of the backing strip;
an elongated first foamed plastic strip lengthwise adjacent to the second face of the backing strip;
an elongated second foamed plastic strip lengthwise adjacent to the intumescent material strip; and
an elongated non-foamed protective material strip lengthwise adjacent to the first foamed plastic strip;
wherein the backing strip is a sheet metal strip; and
wherein widths of the first and second foamed plastic strips, and the non-foamed protective material strip, are all about the same and greater than the width of the sheet metal strip, and wherein a width of the intumescent material strip is about the same or less than the width of the sheet metal strip.