[특허]Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same

Pacific Coast Building Products, Inc.

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Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E04B-001/82 E04B-001/86 E04B-002/74 E04B-001/84
출원번호	US-0697691 (2007-04-06)
등록번호	US-9388568 (2016-07-12)
발명자 / 주소	Tinianov, Brandon D.
출원인 / 주소	Pacific Coast Building Products, Inc.
대리인 / 주소	Locke Lord LLP
인용정보	피인용 횟수 : 1 인용 특허 : 106

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A material for use in building construction (partition, wall, ceiling, floor or door) that exhibits improved acoustical sound proofing and fracture characteristics optimized for efficient installation. The material comprises a laminated structure having as an integral part thereof one or more layers of viscoelastic material which also functions both as a glue and as an energy dissipating layer; and one or more constraining layers, such as gypsum or cement-based panel products modified for easy fracture. In one embodiment, standard paper-faced wallboard, typically gypsum, comprises the external surfaces of the laminated structure with the inner surface of said wallboard being bare with no paper or other material being placed thereon. The resulting structure improves the attenuation of sound transmitted through the structure while also allowing installation of the sound proofing material as efficiently as the installation of standard material when the sound proofing material is used alone or incorporated into a partition assembly.

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1. A laminated, sound-attenuating structure which comprises: a gypsum board having two surfaces, the first of said two surfaces comprising an outer, paper-clad surface and the second of said two surfaces comprising an inner surface, wherein the entire inner surface of the gypsum board is unclad;a layer of viscoelastic glue on the second of said two surfaces; anda cement-based board over said viscoelastic glue, said cement-based board having two surfaces, the first of said two surfaces of said cement-based board comprising an outer surface and the second of said two surfaces of said cement-based board comprising an inner surface; whereina scored flexural strength of the laminated structure is about 22 pounds per ½ inch thickness of the structure;the scored flexural strength being the flexural strength of the laminated structure after the outer, paper-clad surface of the gypsum board has been scored. 2. A laminated, sound-attenuating structure of claim 1, wherein the cement-based board comprises a calcium silicate board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 3. A laminated, sound-attenuating structure as in claim 1, wherein the cement-based board comprises a magnesium oxide-based board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 4. A laminated, sound-attenuating structure as in claim 1, wherein the cement-based board comprises a phosphate-based cement board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 5. The structure of claim 1 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 6. A laminated, sound-attenuating structure which comprises: a gypsum board having two surfaces, the first of said two surfaces comprising an outer, paper-clad surface and the second of said two surfaces comprising an inner, low tensile nonwoven-clad surface, having a tensile strength of approximately one pound per square inch;a layer of viscoelastic glue on the second of said two surfaces; anda cement-based board over said viscoelastic glue, said cement-based board having two surfaces, the first of said two surfaces of said cement-based board comprising an outer surface and the second of said two surfaces of said cement-based board comprising an inner surface; whereinsaid structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 7. A laminated, sound-attenuating structure as in claim 6, wherein the cement-based board comprises a calcium silicate board. 8. A laminated, sound-attenuating structure as in claim 6, wherein the cement-based board comprises a magnesium oxide-based board. 9. A laminated, sound-attenuating structure as in claim 6, wherein the cement-based board comprises a phosphate-based cement board. 10. The structure of claim 6 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 11. A laminated, sound-attenuating structure which comprises: a gypsum board having two surfaces, the first of said two surfaces comprising an outer, fiberglass nonwoven-clad surface and the second of said two surfaces comprising an inner surface, wherein the entire inner surface of the first gypsum board is unclad;a layer of viscoelastic glue on the second of said two surfaces; anda cement-based board over said viscoelastic glue, said cement-based board having two surfaces, the first of said two surfaces of said cement-based board comprising an outer surface and the second of said two surfaces of said cement-based board comprising an inner surface; whereina scored flexural strength of the laminated structure is about 22 pounds per ½ inch thickness of the structure;the scored flexural strength being the flexural strength of the laminated structure after the outer, fiberglass nonwoven-clad surface of the gypsum board has been scored. 12. A laminated, sound-attenuating structure as in claim 11, wherein the cement-based board comprises a calcium silicate board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 13. A laminated, sound-attenuating structure as in claim 11, wherein the cement-based board comprises a magnesium oxide-based board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 14. A laminated, sound-attenuating structure as in claim 11, wherein the cement-based board comprises a phosphate-based cement board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 15. The structure of claim 11 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 16. A laminated, sound-attenuating structure which comprises: a gypsum board having two surfaces, the first of said two surfaces comprising an outer, fiberglass nonwoven-clad surface and the second of said two surfaces comprising an inner, low tensile nonwoven-clad surface, having a tensile strength of approximately one pound per square inch;a layer of viscoelastic glue on the second of said two surfaces; anda cement-based board over said viscoelastic glue, said cement-based board having two surfaces, the first of said two surfaces of said cement-based board comprising an outer surface and the second of said two surfaces of said cement-based board comprising an inner surface;wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 17. A laminated, sound-attenuating structure as in claim 16, wherein the cement-based board comprises a calcium silicate board. 18. A laminated, sound-attenuating structure as in claim 16, wherein the cement-based board comprises a magnesium oxide-based board. 19. A laminated, sound-attenuating structure as in claim 16, wherein the cement-based board comprises a phosphate-based cement board. 20. The structure of claim 16 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 21. A laminated, sound-attenuating structure which comprises: a first gypsum board having two surfaces, the first of said two surfaces comprising an outer, paper-clad surface and the second of said two surfaces comprising an inner surface, wherein the entire inner surface of the first gypsum board is unclad;a layer of viscoelastic glue on the second of said two surfaces; anda second gypsum board over said viscoelastic glue, said second gypsum board having two surfaces, the first of said two surfaces of said second gypsum board comprising an outer, paper-clad surface and the second of said two surfaces of said second gypsum board comprising an inner surface, wherein the entire inner surface of the second gypsum board is unclad;a scored flexural strength of the laminated structure is about 22 pounds per ½ inch thickness of the structure;the scored flexural strength being the flexural strength of the laminated structure after the outer, paper-clad surface of one of the first and second gypsum boards has been scored. 22. The structure of claim 1 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 23. A laminated, sound-attenuating structure which comprises: a first gypsum board having two surfaces, the first of said two surfaces comprising an outer, fiberglass nonwoven-clad surface and the second of said two surfaces comprising an inner surface, wherein the entire inner surface of the first gypsum board is unclad;a layer of viscoelastic glue on the second of said two surfaces; anda second gypsum board over said viscoelastic glue, said second gypsum board having two surfaces, the first of said two surfaces of said second gypsum board comprising an outer, paper-clad surface and the second of said two surfaces of said second gypsum board comprising an inner surface, wherein the entire inner surface of the second gypsum board is unclad; whereina scored flexural strength of the laminated structure is about 22 pounds per ½ inch thickness of the structure;the scored flexural strength being the flexural strength of the laminated structure after the outer, clad surface of one of the first and second gypsum boards has been scored. 24. The structure of claim 23 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 25. A laminated, sound-attenuating structure which comprises: a first gypsum board having two surfaces, the first of said two surfaces comprising an outer, paper-clad surface and the second of said two surfaces comprising an inner, low-tensile nonwoven clad surface, having a tensile strength of approximately one pound per square inch;a layer of viscoelastic glue on the second of said two surfaces; anda second gypsum board over said viscoelastic glue, said second gypsum board having two surfaces, the first of said two surfaces of said second gypsum board comprising an outer, paper-clad surface and the second of said two surfaces of said second gypsum board comprising an inner, low-tensile nonwoven clad surface; whereinsaid structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 26. The structure of claim 25 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 27. A laminated, sound-attenuating structure which comprises: a first gypsum board having two surfaces, the first of said two surfaces comprising an outer, fiberglass nonwoven-clad surface and the second of said two surfaces comprising an inner, low-tensile nonwoven clad surface, having a tensile strength of approximately one pound per square inch;a layer of viscoelastic glue on the second of said two surfaces; anda second gypsum board over said viscoelastic glue, said second gypsum board having two surfaces, the first of said two surfaces of said second gypsum board comprising an outer, paper-clad surface and the second of said two surfaces of said second gypsum board comprising an inner, low-tensile nonwoven clad surface;wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 28. The structure of claim 27 wherein the viscoelastic glue is a fire enhanced glue comprising up to 25% of a zinc borate compound by weight. 29. A method of forming a laminated, sound-attenuating structure which comprises: forming a first gypsum board having two surfaces, the first of said two surfaces comprising an outer, fiberglass nonwoven-clad surface and the second of said two surfaces comprising an inner surface, wherein the entire inner surface of the first gypsum board is unclad;placing a layer of viscoelastic glue on the second of said two surfaces; andplacing a second gypsum board over said viscoelastic glue, said second gypsum board having two surfaces, the first of said two surfaces of said second gypsum board comprising an outer, paper-clad surface and the second of said two surfaces of said second gypsum board comprising an inner surface, wherein the entire inner surface of the second gypsum board is unclad;wherein a scored flexural strength of the laminated structure is about 22 pounds per ½ inch thickness of the structure;the scored flexural strength being the flexural strength of the laminated structure after the outer, clad surface of one of the first and second gypsum boards has been scored. 30. A method of forming a laminated, sound-attenuating structure which comprises: forming a first gypsum board having two surfaces, the first of said two surfaces comprising an outer, paper-clad surface and the second of said two surfaces comprising an inner, low-tensile nonwoven clad surface having a tensile strength of approximately one pound per square inch or less;placing a layer of viscoelastic glue on the second of said two surfaces; andplacing a second gypsum board over said viscoelastic glue, said second gypsum board having two surfaces, the first of said two surfaces of said second gypsum board comprising an outer, paper-clad surface and the second of said two surfaces of said second gypsum board comprising an inner, low-tensile nonwoven clad surface. 31. A method of forming a laminated, sound-attenuating structure which comprises: forming a first gypsum board having two surfaces, the first of said two surfaces comprising an outer, fiberglass nonwoven-clad surface and the second of said two surfaces comprising an inner, low-tensile nonwoven clad surface having a tensile strength of approximately one pound per square inch or less;placing a layer of viscoelastic glue on the second of said two surfaces; andplacing a second gypsum board over said viscoelastic glue, said second gypsum board having two surfaces, the first of said two surfaces of said second gypsum board comprising an outer, paper-clad surface and the second of said two surfaces of said second gypsum board comprising an inner, low-tensile nonwoven clad surface;wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 32. A method of forming a laminated, sound-attenuating structure which comprises: forming a gypsum board having two surfaces, the first of said two surfaces comprising an outer, paper-clad surface and the second of said two surfaces comprising an inner surface, wherein the entire inner surface of the gypsum board is unclad;placing a layer of viscoelastic glue on the second of said two surfaces; andplacing a cement-based board over said viscoelastic glue, said cement-based board having two surfaces, the first of said two surfaces of said cement-based board comprising an outer surface and the second of said two surfaces of said cement-based board comprising an inner surface; whereina scored flexural strength of the laminated structure is about 22 pounds per ½ inch thickness of the structure;the scored flexural strength being the flexural strength of the laminated structure after the outer, paper-clad surface of the gypsum board has been scored. 33. The method of forming the laminated, sound-attenuating structure of claim 32, wherein the cement-based board comprises a calcium silicate board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 34. The method of forming the laminated, sound-attenuating structure of claim 32, wherein the cement-based board comprises a magnesium oxide-based board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound. 35. The method of forming the laminated, sound-attenuating structure of claim 32, wherein the cement-based board comprises a phosphate-based cement board; and wherein said structure is appropriate for use in walls, ceilings, floors or other building partitions to attenuate sound.

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Blades, Michael N.; Watt, John M.; Yakowenko, John E.; Broud, Todd D.; O'Leary, Keith R.; Cusa, Stephen A.; Quiros, Mauricio; Randall, Brian G.; Weir, Richard P.. Sound damping wallboard and method of forming a sound damping wallboard. USP2018039909304.

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