US1839887A - Heat insulating and acoustic plaster - Google Patents

Heat insulating and acoustic plaster Download PDF

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Publication number
US1839887A
US1839887A US486359A US48635930A US1839887A US 1839887 A US1839887 A US 1839887A US 486359 A US486359 A US 486359A US 48635930 A US48635930 A US 48635930A US 1839887 A US1839887 A US 1839887A
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United States
Prior art keywords
plaster
heat insulating
acoustic
insulating
acoustic plaster
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Expired - Lifetime
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US486359A
Inventor
New Gustave Adolph
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AMERICAN GYPSUM CO
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AMERICAN GYPSUM CO
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Publication date
Application filed by AMERICAN GYPSUM CO filed Critical AMERICAN GYPSUM CO
Priority to US486359A priority Critical patent/US1839887A/en
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Publication of US1839887A publication Critical patent/US1839887A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52—Sound-insulating materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S106/00—Compositions: coating or plastic
    • Y10S106/03—Mica

Definitions

  • FIG. '2 I HEAT INSULATING AND ACOUSTIC PLASTER Filed Oct. 4, 1930' FIEJ FIG. '2
  • This invention relates'to a heat insulating and acoustic plaster which has for its purpose toprovide a plaster composition which w1ll combine sound-absorbing and heat and cold insulating qualities.
  • acoustic plaster is becom ing (greater every day. Such plaster is aphe over various surfaces, such as plasterard, etc., but generally over a so-called brown plaster coat.
  • This brown coat consists of a mixture of approximately parts of gypsum plaster and 75 parts of sand with a little fibre and retarder. Inasmuch as a wall made of this material is very dense and hard, it has very little insulating qualities'against heat and cold.
  • the soundabsorbing coeflicient is derived from this up plication itself and lowered on account of the hardness or density of the underlaying base coat.
  • the coeflicient is greatly increased if the base coat is of a sound-absorbing nature in which it renders a two-fold purpose; increased sound-absorbing coeflicient as well as insulating values.
  • Zonolite is a granular, very-light material weighing only 8 pounds per cubic foot and it mixes well with stucco. It is a non-metallic mineral'composed of silica, magnesia and alumina, found in Montana, and used for heat insulating. On account of its bulk and smooth surface the spreading or covering capacity is greatly increased over the sanded plaster and it works considerable more free under the trowel.
  • this base coat After the material (this base coat) is dry, it is not only suificiently hard, but porous enough to make it an ideal insulator.
  • the insulating plaster described has soundabsorbing qualities.
  • Fig. l shows a plan view of the plaster and Fig. 2 is a section.
  • 6 indicates the base coat which as stated consists of a mixture of gypsum and zonolite or similar material of granular and somewhat fibrous quality having the form'of small particles or shreds which make the coating sufliciently porous to have heat insulating and also somewhat sound-absorbing qualities.
  • the outer or face coating'of so-called acoustic plaster indicated at 7 which may be any of the known compositions for this purpose, being somewhat soft and chalky in quality and having its surface broken by a multiplicity of fine depressions or interstices indicated at 8, which may be produced by a proper tool or implement and which gives it the sound-absorbing quality characterized by the term acoustic plaster.
  • the combination of the two coats produces a plaster or wall covering having both heat.

Description

Jan. 5, 1932 a A. NEW
I HEAT INSULATING AND ACOUSTIC PLASTER Filed Oct. 4, 1930' FIEJ FIG. '2
INVENTOR v Gaff/9V! 4. NEW
.4 TTORNE Y Patented Jan. 5, 1932 UNITED STATES PATENT OFFICE GUs'rAvn [mom m'nnor roar CLINTONjOHIO, Assroxon "r0 THE AMERICAN on: so! 00., 01' Your CLINTON, 01110 A oonrona'rron' or 01110 m'r INSULATING AND ACOUSTIC PLLSTER umion fled October 4, 1930. Serial at. 488,359
This invention relates'to a heat insulating and acoustic plaster which has for its purpose toprovide a plaster composition which w1ll combine sound-absorbing and heat and cold insulating qualities.
The demand for acoustic plaster is becom ing (greater every day. Such plaster is aphe over various surfaces, such as plasterard, etc., but generally over a so-called brown plaster coat. This brown coat consists of a mixture of approximately parts of gypsum plaster and 75 parts of sand with a little fibre and retarder. Inasmuch as a wall made of this material is very dense and hard, it has very little insulating qualities'against heat and cold. If acoustic plaster is applied over same- V inch thick as a rule, the soundabsorbing coeflicient is derived from this up plication itself and lowered on account of the hardness or density of the underlaying base coat. The coeflicient, however, is greatly increased if the base coat is of a sound-absorbing nature in which it renders a two-fold purpose; increased sound-absorbing coeflicient as well as insulating values.
'To accompli h this, I mix with the gypsum stucco, instead of sand, a suflicient amount of a heat and cold resisting softand porous ma- .terial such as zonolite or Rockwool, etc.
Zonolite is a granular, very-light material weighing only 8 pounds per cubic foot and it mixes well with stucco. It is a non-metallic mineral'composed of silica, magnesia and alumina, found in Montana, and used for heat insulating. On account of its bulk and smooth surface the spreading or covering capacity is greatly increased over the sanded plaster and it works considerable more free under the trowel.
After the material (this base coat) is dry, it is not only suificiently hard, but porous enough to make it an ideal insulator.
On account of the great bulk of zonolite,
the amountweightover sand in this base coat has to be reduced considerably, making this material also very economical.
the insulating plaster described has soundabsorbing qualities.
For purpose of illustration, Fig. lshows a plan view of the plaster and Fig. 2 is a section.
In these drawings, 6 indicates the base coat which as stated consists of a mixture of gypsum and zonolite or similar material of granular and somewhat fibrous quality having the form'of small particles or shreds which make the coating sufliciently porous to have heat insulating and also somewhat sound-absorbing qualities. Upon this is applied the outer or face coating'of so-called acoustic plaster indicated at 7 which may be any of the known compositions for this purpose, being somewhat soft and chalky in quality and having its surface broken by a multiplicity of fine depressions or interstices indicated at 8, which may be produced by a proper tool or implement and which gives it the sound-absorbing quality characterized by the term acoustic plaster.
The combination of the two coats produces a plaster or wall covering having both heat.
' gypsum stucco mixed with. .heat insulating and sound absorbing fibrous material,-and a finish coat having sound-absorbing interstices.
ture.
GUSTAVE ADOLPH NEW.
- The principal idea in this development lies I in the combination of an insulating plaster,
as a base-coat and acoustic plaster as a finish coat, but this insulating base coat may be .cc In testimony whereof, I do aflix my signa-
US486359A 1930-10-04 1930-10-04 Heat insulating and acoustic plaster Expired - Lifetime US1839887A (en)

Priority Applications (1)

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US486359A US1839887A (en) 1930-10-04 1930-10-04 Heat insulating and acoustic plaster

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439538A (en) * 1948-04-13 Deodorizing composition of matter
US4042745A (en) * 1976-07-14 1977-08-16 Cornwell Charles E Cementitious sound absorbing panels and sound absorbing sprayed wall structures
US20100129643A1 (en) * 2008-11-21 2010-05-27 Yeung Lee K Multi-layer acoustical plaster system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439538A (en) * 1948-04-13 Deodorizing composition of matter
US4042745A (en) * 1976-07-14 1977-08-16 Cornwell Charles E Cementitious sound absorbing panels and sound absorbing sprayed wall structures
US20100129643A1 (en) * 2008-11-21 2010-05-27 Yeung Lee K Multi-layer acoustical plaster system
US9266778B2 (en) 2008-11-21 2016-02-23 Usg Interiors, Llc Multi-layer acoustical plaster system

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