An acoustical panel for forming a monolithic ceiling or wall, the panel extending across a rectangular area, and having a core made primarily of gypsum, the core being essentially coextensive with the panel area such that it has two opposed sides, each of an area substantially equal to the area of t
An acoustical panel for forming a monolithic ceiling or wall, the panel extending across a rectangular area, and having a core made primarily of gypsum, the core being essentially coextensive with the panel area such that it has two opposed sides, each of an area substantially equal to the area of the panel, the core having a multitude of perforations extending generally between its sides, the perforations being distributed substantially uniformly across the full area of the core and being open at both sides of the core, the face side of the core being covered by a porous layer, the perforations being optionally restricted at a rear side of the core, the porous layer at the face side of the core being suitable for adherence of drywall joint compound and a water-based non-blocking paint.
대표청구항▼
1. A rectangular acoustical panel comprising a drywall sheet of a thickness of at least ½ inch or metric industry equivalent having a gypsum-based core and paper front and rear face layers, the drywall sheet being perforated through its faces and core with holes at least ⅛ inch in diameter and of su
1. A rectangular acoustical panel comprising a drywall sheet of a thickness of at least ½ inch or metric industry equivalent having a gypsum-based core and paper front and rear face layers, the drywall sheet being perforated through its faces and core with holes at least ⅛ inch in diameter and of sufficient number to comprise at least 9% of a face area of the panel, the front face being covered by a porous non-woven glass fiber veil having a translucence rendering it incapable of fully concealing the holes, the veil being covered with a non-bridging coating, the combined veil and coating being effective to conceal the holes while affording sufficient porosity therethrough to allow the panel to exhibit an NRC of at least 0.55, short edges of the panel for forming butt joints with identical panels having locally recessed areas at a front face of the panel for reception of joint tape and joint compound below a plane of a major part of the front face of the panel. 2. An acoustical panel as set forth in claim 1, wherein the locally recessed areas are a result of the gypsum core being permanently compressed. 3. A rectangular acoustical panel comprising a drywall sheet of a thickness of at least ½ inch or metric industry equivalent having a gypsum-based core and paper front and rear face layers, the drywall sheet being perforated through its faces and core with holes at least ⅛ inch in diameter and of sufficient number to comprise at least 9% of a face area of the panel, the front face being covered by a porous non-woven glass fiber veil having a translucence rendering it incapable of fully concealing the holes, the veil being covered with a non-bridging coating, the combined veil and coating being effective to conceal the holes while affording sufficient porosity therethrough to allow the panel to exhibit an NRC of at least 0.55, short edges of the panel for forming butt joints with identical panels being machined to enable the front face at the short edges to be locally recessed when the panel area adjacent the short edge is drawn against a panel support at a rear face of the panel. 4. An acoustical panel comprising a drywall sheet of a thickness of at least ½ inch or metric industry equivalent having a gypsum-based core and front and rear face layers, the drywall sheet being perforated through its faces and core with holes at least ⅛ inch in diameter and of sufficient number to comprise at least 9% of a face area of the panel, the front face layer having water-resistant margins resistant to swelling from absorption of moisture from contact with joint compound containing water, the front face being covered by a porous non-woven glass fiber veil having a translucence rendering it incapable of fully concealing the holes, the veil being covered with a non-bridging coating, the combined veil and coating being effective to conceal the holes while affording sufficient porosity therethrough to allow the panel to exhibit an NRC of at least 0.55. 5. An acoustical panel as set forth in claim 4, wherein the entire front face layer is resistant to moisture induced swelling. 6. An acoustical panel as set forth in claim 5, wherein the front face layer is a waterproof paper resistant to moisture induced swelling. 7. An acoustical panel as set forth in claim 4, wherein the front face layer is conventional drywall paper treated with a moisture barrier. 8. An acoustical panel comprising a sheet of a thickness of at least ½ inch or metric industry equivalent having a gypsum-based core and front and rear face layers, the sheet being perforated through its faces and core with holes at least ⅛ inch in diameter and of sufficient number to comprise at least 9% of a face area of the panel, the front face layer being a water-resistant glass fiber resin binder layer that resists water penetration and swelling from absorption of moisture from contact with joint compound containing water, the front face being covered by a porous non-woven glass fiber veil having a translucence rendering it incapable of fully concealing the holes, the veil being covered with a non-bridging coating, the combined veil and coating being effective to conceal the holes while affording sufficient porosity therethrough to allow the panel to exhibit an NRC of at least 0.55. 9. An acoustical panel as set forth in claim 8, wherein a front side of the panel is formed with a peripheral rabbet adapted to receive joint compound. 10. An acoustical panel as set forth in claim 9, wherein the rear face layer is a glass fiber resin binder mat resistant to water penetration.
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이 특허에 인용된 특허 (26)
Englert, Mark H.; Stevens, Richard B.; Sucech, Steven W.; Fults, Therese A.; Porter, Michael J.; Petersen, Bruce L.; Dombeck, Russell A., Acoustical panel comprising interlocking matrix of set gypsum and method for making same.
Capaul Raymond W. (Rte #3 ; Wildwood Dr. Box 643 Aurora IL 60504) Capaul Barry D. (6010 Oakwood ; Apt. 4D Lisle IL 60532), Acoustical panel construction.
Hasegawa, Tomoya; Amagai, Yasuyuki; Okazaki, Shoichi; Wada, Masahiro, Board building material, board building material producing method, board building material installation method.
Attard Peter M. (Elk Grove Village IL) Espinoza Therese A. (Wood Dale IL), Clay-free, asbestos-free and glass microbubble-free drying type joint compounds.
Jakacki Edwin J. (Buffalo Grove IL) Ogle Larry G. (Woodstock IL) Landwer Jonathan C. (Palatine IL) Andersen James C. (Wildwood IL), Ready-mixed, setting-type cementitious composition having separately packaged accelerator.
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