Acoustical sound proofing materials and methods of making the same
AssigneeGeorgia-Pacific Gypsum LLC
InventorsVincent B. Thomas, Douglas C. Eckman, Keshav S. Gautam
Life of this patent
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Abstract
A laminated structure comprises a first external layer and a second external layer; an internal layer disposed between the first and the second external layers; a first adhesive layer disposed between the first external layer and the internal layer, wherein the first adhesive layer is patterned to cover only a first portion of the internal layer; and a second adhesive layer disposed between the second external layer and the internal layer, wherein the second adhesive layer is patterned to cover only a second portion of the internal layer on a side opposite the first adhesive layer, and wherein the first portion is different than the second portion.
Claims21
A laminated structure, comprising:
- a first external layer and a second external layer;
- at least one internal layer disposed between the first and the second external layers;
- a first adhesive layer disposed between the first external layer and the internal layer, wherein the first adhesive layer is patterned to cover only a first portion of the internal layer;
- and
- a second adhesive layer disposed between the second external layer and the internal layer, wherein the second adhesive layer is patterned to cover only a second portion of the internal layer on a side opposite the first adhesive layer, and wherein the first portion is different than the second portion.
A fire door, comprising:
- a first external door layer comprising a gypsum fiberboard and a second external door layer comprising a gypsum fiberboard;
- at least one internal door core layer disposed between the first and the second external door layers, wherein the internal door core comprises a gypsum panel board;
- a first adhesive layer disposed between the first external door layer and the internal door core, wherein the first adhesive layer comprises a viscoelastic hot melt adhesive and is patterned to cover only a first portion of the internal door core;
- and
- a second adhesive layer disposed between the second external door layer and the internal door core, wherein the second adhesive layer comprises a viscoelastic hot melt adhesive and is patterned to cover only a second portion of the internal door core on a side opposite the first adhesive layer, and wherein the first portion is different than the second portion.
A method of making a laminate structure, comprising:
- applying a first adhesive in a first discontinuous pattern on a surface of a first external layer or on at least one internal layer;
- adhering the first external layer to the internal layer;
- applying a second adhesive in a second discontinuous pattern on a surface of the internal layer opposite the first external layer or on a second external layer;
- and
- adhering the second external layer to the internal layer, wherein the first discontinuous pattern and the second discontinuous pattern are offset such that no portion of the first adhesive overlaps with the second adhesive.
Dependencies are inferred from the claim text.