US2217165A - Sound-deadening material - Google Patents
Sound-deadening material Download PDFInfo
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- US2217165A US2217165A US249424A US24942439A US2217165A US 2217165 A US2217165 A US 2217165A US 249424 A US249424 A US 249424A US 24942439 A US24942439 A US 24942439A US 2217165 A US2217165 A US 2217165A
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- layer
- wall
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- backing
- flexible
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- 239000000463 material Substances 0.000 title description 29
- 239000010410 layer Substances 0.000 description 47
- 229920003023 plastic Polymers 0.000 description 17
- 239000004033 plastic Substances 0.000 description 17
- 238000010276 construction Methods 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 8
- 239000011505 plaster Substances 0.000 description 8
- 239000002023 wood Substances 0.000 description 8
- 230000001464 adherent effect Effects 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000003973 paint Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 235000021388 linseed oil Nutrition 0.000 description 2
- 239000000944 linseed oil Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011508 lime plaster Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229940079938 nitrocellulose Drugs 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000485 pigmenting effect Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
Definitions
- This invention relates to an improved and novel material for sound-deadening and finishing the interior wall surfaces of buildings, and has particularly to do with the provision of such a material to be emplayed in lieu of the usual and well known plaster wall interior finish commonly employed in building construction.
- the invention also has considerable utility in that it is a complete manufactured product and provides an ornamental wall which may be used immediately following the application of the material, and one with'improved heat insulating characteristics.
- the most important characteristic of the wall including the material of this invention lies in the improved ability of the wall to absorb sound waves and the improvement in this respect is believed to be due to the flexible and resilient-though apparently rigidplaster-appearing, multi-layer material which, 20 though unitary with respect toapplicatio to the wall, includes separate adherent layers of material 'of wholly different characteristics, namely, sound-absorbing dry felt layer plus a. surface or exposed light-colored decorative layer 25 of resilient plastic material adherent thereto,
- a sound-deadening wall might include a fabric material in layer form, for example, cloth or felt, and such material, after being attached to a plaster or other equivalent permanent wall a backing, then treated, as by paint, when in place to provide an ornamental surface.
- Such suggestions havev not been adopted .generally and practically to any appreciable extent, and moreover, involve hand labor and expense and considerable time after being attached, before the wall, by repeated painting, can be provided with a smooth and uniform light-colored surface as is required for home construction,
- the felt dry fabric layer absorbs so much paint and thereby sacrifices sound absorbency. Also, the paint layer itself does not absorb the sound well.
- Fig. 1 is a perspective view. partly in section, of a wall including the sound-deadening material of the present invention in place on the interior of the same;
- Fig. 2 is a perspective, much enlarged, show- 5 ing a small portion of said material
- Fig. 3 is a curve illustrating typical sound-absorption characteristics of said material mounted on an ordinary wall board (or plywood backns).
- the usual permanent outside wall of a building is generally indicated at 2 and as here shown, includes studding 4, sheathing 6, heat-insulating paper 1, and shingles or the like 8, on the outside of said in-. sulating paper or the like.
- a wall board backing I0 To the inside of such permanent wall 2 there is attached by nails 9 or other suitable fastening to the studding 4, or equivalent structure, a wall board backing I0, and adhesively secured thereto by an adhesive layer of cement l2, preferably a flour paste, is the unitary multi-layer, flexible sound-deadening material of this invention, generally designated at 14.
- Said unitary multilayer material M in its preferred form comprises an open porous and sound absorbent layer of rag and paper (water-laid) felt IE to the surface of which felt I6 is adhesively attached the flexible ornamental plastic surface layer l8, as hereinafter more fully described.
- This ornamental plaster-appearing plastic surface layer I8 (which is frictioned into face-to-face relation with the felt as distinguished from being absorbed thereby as would be the case with paint) is made from fibrous,.,material, finely divided or finely ground, and in the commercial practice of the invention has included organic material such as finely ground wood powder and/or finely divided cotton linters, depending somewhat upon the character and finish of the interior surface it is desired to produce.
- the plastic material simulates the appearance of decorated hard plaster so closely that it appears upon superficial observation to be such, it is in fact flexible and soft. This accounts for some of its sound-absorbing capacity but, however, the primary reason for such high capacity is that the felt, though providing a perfectly smooth foundation for the plastic layer I8, is very open and porous and compressible despite theplastic layer which affords a smooth washableexposed surface and one to which dust does not adhere. w
- the coloring of the plastic layer l8 may be 66 accomplished by either dyes or pigmenting the plastic ,prior to frictioning the same by means of calender rolls upon the felt backing and, in addition, the plastic, after having been applied, may be color printed by means of roll or flat bed press, as desired, in order to impart thereto various decorative conventional or other ornamental designs. Also, the plastic, when initially colored, need not be all of the same color, but may be given a mottled effect by mixing on the calender two or more different colors of material which, by the calender, are caused to merge more or less into one another.
- the mottled surface may be printed with what we may term an ornamental skip-space design, leaving the mottled effect for the background and printing thereon by means of a suitable liquid medium the desired design Just as though it were printed on a plain, uniformly colored background.
- the plastic material is made up of wood powder, pigment, flexible binder, and, if necessary, a plasticizer.
- Suitable binders are plasticized nitro-cellulose with some solvent, plasticized resin, or linseed oil with a small amount of resin, natural or artiflcial, may be employed, with or without plasticizer.
- Any suitable finely divided type of lightcolored mineral pigment will answer, such, for example, as are used for coloring paper or in paints.
- a typical table of materials as employed in practice is as follows, all parts being by weight:
- the material may desirably be made with a backing felt in the thickness of, say, .050", plus or minus .025, and a porous plastic surface layer of .017.-.020", minus .010 plus .020"-.030, though these are not limiting dimensions.
- the product as thus made provides sufficient flexibility for a unitary multi layer sound-deadening material so that it may be rolled and unrolled without fracture or appreciable cracking of the material when so rolled and unrolled and during the application thereof to wallboard or other backing to which the material is adhesively or otherwise secured.
- the flexible and soft character of the laminated unitary product it is sufficiently stiff so as to bridge any small irregularities or joints in the wallboard backing, and the dry felt, though possessing no great inherent strength, is sufficiently stifi so as to bridge such irregularities and joints.
- the aggregate thickness of the finished product as currently made and sold is of the order of .065"-.075" which gives adequate thickness and characteristics of the sound-deadening as heretofore described, and sufficient softness and body to provide a desirable-and attractive wall covering having the novel and useful characteristics herein described.
- the sound absorption capacity of a wall made in accordance with this invention as above described including a wall board backing is found to be much greater than that of an ordinary plaster wall made up of lime or gypsum plaster including scratch, brown and finished coats on woodlath.
- the figures of actual tests made of such sound absorption coefficients are as follows:-
- the wall in practice, is found to have very good heat insulating characteristics. Moreover, it forms a ready and practical substitute for plaster construction at a substantial saving in the cost of lath, plaster, labor and necessary drying time, before wooden interior trim may be installed. Besides, the wall is permanent without any likelihood of cracking or other failure due to excessive swelling and shrinking such as inevitably result from the application of wet plaster, and does not shatter due to vibration and shock as does an ordinary plaster wall.
- a building wall construction which includes a permanent wall portion, a substantially continuous backing, a flexible and resilient building wall sound-deadening material secured to said backing comprising a flexible multi-layer unit made up of a series of layers including a porous open paper felt layer, and permanently united to said layer upon the exposed surface thereof a layer of relatively light-colored flexible porous plastic surface coating, including finely-divided fibrous material and a hardened binder material.
- a building wall construction which includes a permanent wall portion, a substantially continuous backing, a flexible and resilient building wall sound-deadening material secured to said backing comprising a flexible multi-layer unit made up of a series of layers including a porous open paper felt layer, and permanently united to said layer upon the exposed surface thereof a thinner layer of relatively light-colored pigmented flexible plastic surface coating including finely divided wood powder and a hardened binder material.
- an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, saidlayer having permanently united thereto upon the exposed surface thereof a relatively light-colored layer of pigmented plastic surface coating, including finely-divided fibrous material and a hardened binder material.
- an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, said layer having permanently united thereto upon the exposed surface thereof a relatively light-colored layer of pigmented plastic surface coating including a finely divided wood powder and a hardened binder material.
- an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, said layer having permanently united thereto upon the exposed surface thereof a relatively light-colored layer of pigmented plastic surface coating including a finely divided wood powder, a hardened binder material, and bentonite clay.
- an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, and permanently united to said layer upon the exposed surface thereof a layer of relatively light-colored flexible porous plastic surface coating including finely divided wood powder and a hardened plasticized resin.
- an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, and permanently united to said layer upon the exposed surface thereof a layer of relatively light-colored flexible porous plastic surface coating including finely divided wood powder and hardened linseed oil.
Description
Oct. 8,, 1940.
J. E. GRAHAM ET AL SOUND DEADENING MATER IAL Filed Jan. 5, 1959 FREQUENCY CYCLES '"SECOND mvzmons f M *1 m ATToRu f Patented Oct. 8, 1940 UNITED STATES PATENT OFF-ICE Dedham, Masa, minors to' Bird & Son, Inc., East Walpole, Mala, a corporation of Massachusetts Application January 5, 1939, Serial No. 249,424
'1 Claims.
This invention relates to an improved and novel material for sound-deadening and finishing the interior wall surfaces of buildings, and has particularly to do with the provision of such a material to be emplayed in lieu of the usual and well known plaster wall interior finish commonly employed in building construction. The invention also has considerable utility in that it is a complete manufactured product and provides an ornamental wall which may be used immediately following the application of the material, and one with'improved heat insulating characteristics. The most important characteristic of the wall including the material of this invention lies in the improved ability of the wall to absorb sound waves and the improvement in this respect is believed to be due to the flexible and resilient-though apparently rigidplaster-appearing, multi-layer material which, 20 though unitary with respect toapplicatio to the wall, includes separate adherent layers of material 'of wholly different characteristics, namely, sound-absorbing dry felt layer plus a. surface or exposed light-colored decorative layer 25 of resilient plastic material adherent thereto,
which closely simulates the appearance of decorated hard plaster. If desired, however, wall paper may be applied directly thereto and without the preliminary application of a sizing coat. Prior to this invention, it has been Suggested that a sound-deadening wall might include a fabric material in layer form, for example, cloth or felt, and such material, after being attached to a plaster or other equivalent permanent wall a backing, then treated, as by paint, when in place to provide an ornamental surface. Such suggestions, however, havev not been adopted .generally and practically to any appreciable extent, and moreover, involve hand labor and expense and considerable time after being attached, before the wall, by repeated painting, can be provided with a smooth and uniform light-colored surface as is required for home construction,
particularly in that the felt dry fabric layer absorbs so much paint and thereby sacrifices sound absorbency. Also, the paint layer itself does not absorb the sound well. By employing at once, and at the same time provides the all" important sound-deadening characteristics to "which the invention is particularly directed.
In the accompanying drawing which forms 55 part of this specification:
Fig. 1 is a perspective view. partly in section, of a wall including the sound-deadening material of the present invention in place on the interior of the same;
Fig. 2 is a perspective, much enlarged, show- 5 ing a small portion of said material, and
Fig. 3 is a curve illustrating typical sound-absorption characteristics of said material mounted on an ordinary wall board (or plywood backns).
Referring to the drawing in which like numerals represent like parts, the usual permanent outside wall of a building is generally indicated at 2 and as here shown, includes studding 4, sheathing 6, heat-insulating paper 1, and shingles or the like 8, on the outside of said in-. sulating paper or the like.
To the inside of such permanent wall 2 there is attached by nails 9 or other suitable fastening to the studding 4, or equivalent structure, a wall board backing I0, and adhesively secured thereto by an adhesive layer of cement l2, preferably a flour paste, is the unitary multi-layer, flexible sound-deadening material of this invention, generally designated at 14. Said unitary multilayer material M in its preferred form comprises an open porous and sound absorbent layer of rag and paper (water-laid) felt IE to the surface of which felt I6 is adhesively attached the flexible ornamental plastic surface layer l8, as hereinafter more fully described. This ornamental plaster-appearing plastic surface layer I8 (which is frictioned into face-to-face relation with the felt as distinguished from being absorbed thereby as would be the case with paint) is made from fibrous,.,material, finely divided or finely ground, and in the commercial practice of the invention has included organic material such as finely ground wood powder and/or finely divided cotton linters, depending somewhat upon the character and finish of the interior surface it is desired to produce.
Though the plastic material simulates the appearance of decorated hard plaster so closely that it appears upon superficial observation to be such, it is in fact flexible and soft. This accounts for some of its sound-absorbing capacity but, however, the primary reason for such high capacity is that the felt, though providing a perfectly smooth foundation for the plastic layer I8, is very open and porous and compressible despite theplastic layer which affords a smooth washableexposed surface and one to which dust does not adhere. w
The coloring of the plastic layer l8 may be 66 accomplished by either dyes or pigmenting the plastic ,prior to frictioning the same by means of calender rolls upon the felt backing and, in addition, the plastic, after having been applied, may be color printed by means of roll or flat bed press, as desired, in order to impart thereto various decorative conventional or other ornamental designs. Also, the plastic, when initially colored, need not be all of the same color, but may be given a mottled effect by mixing on the calender two or more different colors of material which, by the calender, are caused to merge more or less into one another. Moreover, the mottled surface may be printed with what we may term an ornamental skip-space design, leaving the mottled effect for the background and printing thereon by means of a suitable liquid medium the desired design Just as though it were printed on a plain, uniformly colored background.
In ordinary commercial practice, the plastic material is made up of wood powder, pigment, flexible binder, and, if necessary, a plasticizer. Suitable binders are plasticized nitro-cellulose with some solvent, plasticized resin, or linseed oil with a small amount of resin, natural or artiflcial, may be employed, with or without plasticizer. Any suitable finely divided type of lightcolored mineral pigment will answer, such, for example, as are used for coloring paper or in paints. A typical table of materials as employed in practice is as follows, all parts being by weight:
Parts Wood flour to 250 Lithopone 25 to 75 Bentonite clay 30 to 50 Water 10 to 50 Resin and drying oil varnish to 225 It is necessary that the binder then have sufficient time to become hardened or set up" so as to give the finished product a certain amount of firmness together with the desired flexibility and resilience. The material may desirably be made with a backing felt in the thickness of, say, .050", plus or minus .025, and a porous plastic surface layer of .017.-.020", minus .010 plus .020"-.030, though these are not limiting dimensions. The product as thus made provides sufficient flexibility for a unitary multi layer sound-deadening material so that it may be rolled and unrolled without fracture or appreciable cracking of the material when so rolled and unrolled and during the application thereof to wallboard or other backing to which the material is adhesively or otherwise secured. Despite the flexible and soft character of the laminated unitary product, it is sufficiently stiff so as to bridge any small irregularities or joints in the wallboard backing, and the dry felt, though possessing no great inherent strength, is sufficiently stifi so as to bridge such irregularities and joints. The aggregate thickness of the finished product as currently made and sold is of the order of .065"-.075" which gives adequate thickness and characteristics of the sound-deadening as heretofore described, and sufficient softness and body to provide a desirable-and attractive wall covering having the novel and useful characteristics herein described.
The sound absorption capacity of a wall made in accordance with this invention as above described including a wall board backing is found to be much greater than that of an ordinary plaster wall made up of lime or gypsum plaster including scratch, brown and finished coats on woodlath. The figures of actual tests made of such sound absorption coefficients are as follows:-
In addition to such striking sound absorption characteristics, the wall, in practice, is found to have very good heat insulating characteristics. Moreover, it forms a ready and practical substitute for plaster construction at a substantial saving in the cost of lath, plaster, labor and necessary drying time, before wooden interior trim may be installed. Besides, the wall is permanent without any likelihood of cracking or other failure due to excessive swelling and shrinking such as inevitably result from the application of wet plaster, and does not shatter due to vibration and shock as does an ordinary plaster wall.
Having described our invention, what we wish to claim and secure by Letters Patent is:
1. In a building wall construction 'which includes a permanent wall portion, a substantially continuous backing, a flexible and resilient building wall sound-deadening material secured to said backing comprising a flexible multi-layer unit made up of a series of layers including a porous open paper felt layer, and permanently united to said layer upon the exposed surface thereof a layer of relatively light-colored flexible porous plastic surface coating, including finely-divided fibrous material and a hardened binder material.
2. In a building wall construction which includes a permanent wall portion, a substantially continuous backing, a flexible and resilient building wall sound-deadening material secured to said backing comprising a flexible multi-layer unit made up of a series of layers including a porous open paper felt layer, and permanently united to said layer upon the exposed surface thereof a thinner layer of relatively light-colored pigmented flexible plastic surface coating including finely divided wood powder and a hardened binder material.
3. In association with a building wall construction which includes a permanent wall portion and a layer of wall board aflilxed to said permanent wall portion and providing a continuous wall board backing, an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, saidlayer having permanently united thereto upon the exposed surface thereof a relatively light-colored layer of pigmented plastic surface coating, including finely-divided fibrous material and a hardened binder material.
4. In association with a building wall construction which includes a permanent wall portion and a layer of wall board affixed to said permanent wall portion and providing a continuous wall board backing, an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, said layer having permanently united thereto upon the exposed surface thereof a relatively light-colored layer of pigmented plastic surface coating including a finely divided wood powder and a hardened binder material.
5. In association with a building wall construction which includes a permanent wall portion and a layer of wall board aflixed to said permanent wall portion and providing a continuous wall board backing, an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, said layer having permanently united thereto upon the exposed surface thereof a relatively light-colored layer of pigmented plastic surface coating including a finely divided wood powder, a hardened binder material, and bentonite clay.
6. In association with a building wall construction which includes a permanent wall portion and a layer ofwall board afilxed to said permanent wall portion and providing a continuous wall board backing, an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, and permanently united to said layer upon the exposed surface thereof a layer of relatively light-colored flexible porous plastic surface coating including finely divided wood powder and a hardened plasticized resin.
'7. In association with a building wall construction which includes a permanent wall portion and a layer of wall board afllxed to said permanent wall portion and providing a continuous wall board backing, an adherent flexible and resilient multi-layer unit adhesively secured to said wall board backing including a porous open paper felt layer adjacent said backing, and permanently united to said layer upon the exposed surface thereof a layer of relatively light-colored flexible porous plastic surface coating including finely divided wood powder and hardened linseed oil.
JAMES E. GRAHAM. EDWIN M. LINES.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US249424A US2217165A (en) | 1939-01-05 | 1939-01-05 | Sound-deadening material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US249424A US2217165A (en) | 1939-01-05 | 1939-01-05 | Sound-deadening material |
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US2217165A true US2217165A (en) | 1940-10-08 |
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US249424A Expired - Lifetime US2217165A (en) | 1939-01-05 | 1939-01-05 | Sound-deadening material |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450786A (en) * | 1944-08-15 | 1948-10-05 | American Associated Companies | Wall covering and method of applying same |
DE1003427B (en) * | 1953-06-06 | 1957-02-28 | Mueller Ludwig | Porous sound absorbing plate and process for its manufacture |
DE1115432B (en) * | 1953-06-06 | 1961-10-19 | Mueller Ludwig | Porous sound absorbing plate and process for its manufacture |
US3401069A (en) * | 1964-06-26 | 1968-09-10 | Harold G. Lorentzen | Method for installing resinous floor coverings |
EP2196589A1 (en) * | 2008-12-09 | 2010-06-16 | Lafarge Gypsum International | Acoustic fire-resisting insulating partition, ceiling or lining |
US20130161126A1 (en) * | 2010-09-01 | 2013-06-27 | Echo Barrier Limited | Sound Absorbent Barrier |
-
1939
- 1939-01-05 US US249424A patent/US2217165A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2450786A (en) * | 1944-08-15 | 1948-10-05 | American Associated Companies | Wall covering and method of applying same |
DE1003427B (en) * | 1953-06-06 | 1957-02-28 | Mueller Ludwig | Porous sound absorbing plate and process for its manufacture |
DE1115432B (en) * | 1953-06-06 | 1961-10-19 | Mueller Ludwig | Porous sound absorbing plate and process for its manufacture |
US3401069A (en) * | 1964-06-26 | 1968-09-10 | Harold G. Lorentzen | Method for installing resinous floor coverings |
EP2196589A1 (en) * | 2008-12-09 | 2010-06-16 | Lafarge Gypsum International | Acoustic fire-resisting insulating partition, ceiling or lining |
US20130161126A1 (en) * | 2010-09-01 | 2013-06-27 | Echo Barrier Limited | Sound Absorbent Barrier |
US8807275B2 (en) * | 2010-09-01 | 2014-08-19 | Echo Barrier Limited | Sound absorbent barrier |
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