US3196494A - Fire resistant door - Google Patents
Fire resistant door Download PDFInfo
- Publication number
- US3196494A US3196494A US258396A US25839663A US3196494A US 3196494 A US3196494 A US 3196494A US 258396 A US258396 A US 258396A US 25839663 A US25839663 A US 25839663A US 3196494 A US3196494 A US 3196494A
- Authority
- US
- United States
- Prior art keywords
- door
- fire
- core
- asbestos
- stiles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B3/7015—Door leaves characterised by the filling between two external panels
- E06B2003/7025—Door leaves characterised by the filling between two external panels of cork; of wood or similar fibres
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B2003/7049—Specific panel characteristics
- E06B2003/7051—Specific panel characteristics of layered construction involving different materials
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B2003/7059—Specific frame characteristics
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B2003/7059—Specific frame characteristics
- E06B2003/7061—Wooden frames
- E06B2003/7063—Wooden frames reinforced; in combination with other materials, e.g. foam, honeycomb
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
- E06B3/82—Flush doors, i.e. with completely flat surface
- E06B3/822—Flush doors, i.e. with completely flat surface with an internal foursided frame
-
- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/92—Fire or heat protection feature
-
- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/92—Fire or heat protection feature
- Y10S428/921—Fire or flameproofing
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/16—Two dimensionally sectional layer
- Y10T428/163—Next to unitary web or sheet of equal or greater extent
- Y10T428/164—Continuous two dimensionally sectional layer
- Y10T428/167—Cellulosic sections [e.g., parquet floor, etc.]
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/23—Sheet including cover or casing
- Y10T428/232—Encased layer derived from inorganic settable ingredient
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
Definitions
- the present invention is broadly concerned with building construction units and is particularly directed toward an improved type of fire resistant composite door, panel or similar structure.
- one object of the present invention is to provide a structural unit such as a door or panel which is practically fireproof, by being highly resistant to the destructive action of fire and extremely high temperatures.
- the door or panel or equivalent unit of the present invention is composed of a plurality of different materials, each of which functionsto raise the fire resistant characteristics of the unit as a whole to an extremely high level.
- Another object of the present invention is to provide a composite door or panel of the type indicated which is highly resistant to leakage or the passage therethrough of hot gases, hot air, smoke or other vapors and which will not warp or bend when subjected to extremely high heat concentrated on one side of the door or panel.
- Other objects of the present invention are to provide a high type fireproof unit which is composed of materials which are of a very light weight and highly resistant to the transmission of heat therethrough.
- the door or panel of the present invention comprises in combination a core, suitable stiles and rails, fire resistant cross bands comprising asbestos, fire resistant glue sheets and veneer facings.
- the composite door or panel structure of the present invention is of such a nature that it will meet the Fire Underwriters Laboratory test described in ASTM E15256T Underwriters Laboratory Inc. for Fire Tests of Door Assemblies Pamphlet U.L. (b) 3rd edition.
- the test requires the door to pass the code requirement for a 1 /2 hour fire door test.
- the door In this test, the door must be capable of withstanding, for 1 /2 hours, flames which cause a buildup in the temperature to 1790 F., on one face of the door. The temperature rise on the opposite face of the door during the first one-half hour must not exceed 250 F. above ambient temperature.
- the door At the end of this fire exposure test, the door must withstand the impact of a water hose stream at 30 lbs. pressure, which water hose stream is played on 0 the door from a distance of 20 feet for one minute and 47 seconds.
- the door or structure of the present invention is highly resistant to the leakage or transmission of high temperature heat which might ignite flammable materials which are located on the cold side of the structure.
- each component is interrelated and functions to produce a combined fire retardant 1 /2 hour composite fire door.
- FIGURE 1 is a plan view of the door with the facing plies thereof broken away in order to show the construction.
- FIGURE 2 is afragmentary cross-section view through the core and door.
- the core 1 of the door consists of a fireproof or non-burning inorganic material which has excellent heat insulating properties.
- a particularly desirable material for the core is Weldrok which is sold by United States Plywood; In general, this material should have a density in the range from about 18 to 24 lbs/cu. ft., preferably having a density in the range from 20 to 24 lbs/cu. ft.
- a particularly preferred type of material for the core is a calcium silicate subhydrate which is rendered porous by certain manufacturing steps.
- the core material Weldrok consists of an incombustible mineral material consisting of complex metal silicates with fiber binder. Density of the core material can range from 18 to 24 lbs./ft. Weight/sq. ft. of this core material is 4 lbs. Weldrok is warp free and stable, and possesses a U factor of approximately"0.35 B.t.u./hr./sq. ft./ F.
- the structural frame comprising stiles 2 and rails 6 are inorganic materials marketed by J ohns-Manville under the trade name Marinite. Since these materials are inorganic in nature, this type of structural frame prevents any burnout around the core material. Marinite is composed of an asbestos fiber, diatomaceous silica and an inorganic binder.
- a fire retardant element 3 preferably a hard wood such as maple or hinge and lock blocks, composed of Marinite or treated maple, is positioned along the rails 6 and stiles 2.
- the A" fire retardant treated soft maple lumber is treated by the vacuum pressure cell process.
- the crossbands 4 contribute greatly to the basic fireproofing composition and nature of the door of the present invention. These crossbands are of an asbestos neoprene composition and contribute greatly to the effectiveness of the door.
- the faces 5 of the door comprise lignocellular material, preferably veneer, and are laminated to the crossbands 4 with a phenolic impregnated adhesive.
- a preferred type is a precatalyzed phenolic powdered resin HP-401D, made by the Borden Chemical Company.
- Another satisfactory adhesive is Tego sold by Rohm and Haas. Tego is a B stage phenolic impregnated adhesive sheet which will cure under heat.
- the dimensions of the panel or door may be varied appreciably depending upon its ultimate use. These dimensions are interrelated and depend upon the size and unit being fabricated. One satisfactory unit is to have the core of a thickness of from 1.5 86" to 1.594". .Under these conditions, the rails would approximate x 1.586 to 1.594" and the thickness of the crossband would approximate .038" to .042" thick. f
- FIG- URE 2 One typical group of dimensions are given in FIG- URE 2. It is to be noted that core 1 is keyed into stiles 2.
- one technique for constructing the 1 /2 hour fire door is as follows:
- the core is made of Weldrok as manufactured by US. Plywood.
- the inner stiles and rails are made of Marinite- 36 lbs. density, /2 wide.
- the Weldrok core are sized with a catalyzed urea formaldehyde resin'.
- Marinite stiles and rails .(3) Fire. retardant treated lumber outer'stiles and rails such as soft maple are jacent to the inner members. a
- the adhesive can be either a'catalyzed urea-form aldehyde resin reinforced with a precatalyzed phenolic powdered resin HP-401D or a phenol-resorcinol adhesive resin.
- the assembly is then sized with a phenolic resin sizing formulation and semi-precured under an infra-red oven.
- the phenolic resin is similar to that which is manufactured by the Borden Chemical'Company.
- a veneer; face is placed on a platform.
- BRLA+1 030. is a slightly alkaline phenol formaldehyde resin of very low molecular weight to insure penetration in depth.
- Triton X,-100 a nonionic wetting-agent is isooctyl phenyl polyethoxy ethanol.
- Thissizing is comprised of'difierent 'phenol ingredients, plus an ad- 7 ditive to aid in penetration. This sizing is of a very light viscosity.
- the asbesto's elastomer crossband which is approximately .038" to .042" thick 'is also phenolic sized and semi precure'd.
- This asbestos .cross'band material contributes much to the product for the coeflicients of linear (3)
- Y (4)
- Thesecond asbestos cros-sband has adhesive'applied to both surfaces, is curedand cooled' in the same to the other surface of the semi-precured "asbestos manner as the previous one and laid onthe'core assembly. 1
- The" material is an excellent heatgins'ulatorfl and is easily machined.
- the lmaterial is. insoluble: in water. and'w'astested in accordance with standard test methods for fire hazard classification of building materials.”
- the inorganic materialsjsuchas Marinite (36 pound) is manufactured by. Johns-Manville andis an.insulating material composed of asbestos fibers, diatomaceous silica It is fireproof and has a low' and an inorganic binder.
- phenolic adhesive used'for fabrication' is a phenolic type. similargto that produced by the: Borden Chemical
- the above mentioned phenol, adhesive mixture is applied to bothsurfaces :of the. asbestos crossband at a raterof approximately 35 poundsper thousand square feet 'of single glue line. It is :thenimmediately flashed off by means of a circulating air; and semi-precured under an infra-red oven at approximately 160 F. for 45 seconds.
- stiles and rails can either be urea-formaldehyde 1 reinforced with a precatalyzed phenolic resin (HP-401D) or a phenol resorcinol adhesive resin; This is applied to one surface of the Marinite which is then placed against the-Weldrok core. The adhesive is also applied, to one surface of the treated lumber'and placed against the Marinite. ,This entire assembly is then cured, via
- -mable decorative veneer is adhered to at least one'of .sa'id crossbands.
- FRANK L. ABBOTT Primary Examiner.
Description
y 1965 s. HARTMAN ETAL 3,196,494
FIRE RESISTANT DOOR Filed Feb. 4, 1963 3 F|RE RETARDANT TREATED SOFT MAPLE STILE 4 ASBESTOS-ELASTOMER CROSSBAND VENEER FIGURE l FIGURE 2 2 WELI JRQK MARINITE STILE II 3 FIRE REI'ARDANT TREATED SOFT MAPLE nae-.042 040 4 L" ABESTOS ELASTOMER 2e VENEER CROSSBAND Inventors SEYMOUR HARTMAN REUBEN F. HOFFMANN Attorney United States Patent 3,196,494 FIRE RESISTANT DOOR Seymour Hartman, Mahopac, N.Y., and Reuben F. Hodmann, Algoma, Wis., assignors to United States Plywood Corporation, New York, N.Y., a corporation of New York Filed Feb. 14, 1963, Ser. No. 258,396
5 Claims. (til. 20-45) The present invention is broadly concerned with building construction units and is particularly directed toward an improved type of fire resistant composite door, panel or similar structure. Thus, one object of the present invention is to provide a structural unit such as a door or panel which is practically fireproof, by being highly resistant to the destructive action of fire and extremely high temperatures. The door or panel or equivalent unit of the present invention is composed of a plurality of different materials, each of which functionsto raise the fire resistant characteristics of the unit as a whole to an extremely high level.
Another object of the present invention is to provide a composite door or panel of the type indicated which is highly resistant to leakage or the passage therethrough of hot gases, hot air, smoke or other vapors and which will not warp or bend when subjected to extremely high heat concentrated on one side of the door or panel. Other objects of the present invention are to provide a high type fireproof unit which is composed of materials which are of a very light weight and highly resistant to the transmission of heat therethrough.
In essence, the door or panel of the present invention comprises in combination a core, suitable stiles and rails, fire resistant cross bands comprising asbestos, fire resistant glue sheets and veneer facings.
The composite door or panel structure of the present invention is of such a nature that it will meet the Fire Underwriters Laboratory test described in ASTM E15256T Underwriters Laboratory Inc. for Fire Tests of Door Assemblies Pamphlet U.L. (b) 3rd edition.
In essence, the test requires the door to pass the code requirement for a 1 /2 hour fire door test. In this test, the door must be capable of withstanding, for 1 /2 hours, flames which cause a buildup in the temperature to 1790 F., on one face of the door. The temperature rise on the opposite face of the door during the first one-half hour must not exceed 250 F. above ambient temperature. At the end of this fire exposure test, the door must withstand the impact of a water hose stream at 30 lbs. pressure, which water hose stream is played on 0 the door from a distance of 20 feet for one minute and 47 seconds. As pointed out heretofore, the door or structure of the present invention is highly resistant to the leakage or transmission of high temperature heat which might ignite flammable materials which are located on the cold side of the structure.
It is to be noted that, at present, there exists no 1 /2 hour wood faced composite fire door. The only door which has a 1 /2 hour Underwriters label is a metal door. The composite door of the present invention is the first such door to pass the Underwriters test for a 1 /2 hour door. Thus, each component is interrelated and functions to produce a combined fire retardant 1 /2 hour composite fire door.
"ice
The door structure of the present invention may be readily appreciated by reference to the figures illustrating one embodiment of the same. FIGURE 1 is a plan view of the door with the facing plies thereof broken away in order to show the construction. FIGURE 2 is afragmentary cross-section view through the core and door.
Referring specifically to the figures, the core 1 of the door consists of a fireproof or non-burning inorganic material which has excellent heat insulating properties. A particularly desirable material for the core is Weldrok which is sold by United States Plywood; In general, this material should have a density in the range from about 18 to 24 lbs/cu. ft., preferably having a density in the range from 20 to 24 lbs/cu. ft. A particularly preferred type of material for the core is a calcium silicate subhydrate which is rendered porous by certain manufacturing steps.
In essence, the core material Weldrok consists of an incombustible mineral material consisting of complex metal silicates with fiber binder. Density of the core material can range from 18 to 24 lbs./ft. Weight/sq. ft. of this core material is 4 lbs. Weldrok is warp free and stable, and possesses a U factor of approximately"0.35 B.t.u./hr./sq. ft./ F.
The structural frame comprising stiles 2 and rails 6 are inorganic materials marketed by J ohns-Manville under the trade name Marinite. Since these materials are inorganic in nature, this type of structural frame prevents any burnout around the core material. Marinite is composed of an asbestos fiber, diatomaceous silica and an inorganic binder.
A fire retardant element 3 preferably a hard wood such as maple or hinge and lock blocks, composed of Marinite or treated maple, is positioned along the rails 6 and stiles 2. The A" fire retardant treated soft maple lumber is treated by the vacuum pressure cell process.
The crossbands 4 contribute greatly to the basic fireproofing composition and nature of the door of the present invention. These crossbands are of an asbestos neoprene composition and contribute greatly to the effectiveness of the door. The faces 5 of the door comprise lignocellular material, preferably veneer, and are laminated to the crossbands 4 with a phenolic impregnated adhesive. A preferred type is a precatalyzed phenolic powdered resin HP-401D, made by the Borden Chemical Company. Another satisfactory adhesive is Tego sold by Rohm and Haas. Tego is a B stage phenolic impregnated adhesive sheet which will cure under heat.
The dimensions of the panel or door may be varied appreciably depending upon its ultimate use. These dimensions are interrelated and depend upon the size and unit being fabricated. One satisfactory unit is to have the core of a thickness of from 1.5 86" to 1.594". .Under these conditions, the rails would approximate x 1.586 to 1.594" and the thickness of the crossband would approximate .038" to .042" thick. f
One typical group of dimensions are given in FIG- URE 2. It is to be noted that core 1 is keyed into stiles 2.
In order to further illustrate the invention, one technique for constructing the 1 /2 hour fire door is as follows:
(1) The core is made of Weldrok as manufactured by US. Plywood.
(2) The inner stiles and rails are made of Marinite- 36 lbs. density, /2 wide.
thermal expansion coeflicient. by the Underwriters Laboratories and has 'aflame spread (a) The Weldrok core are sized with a catalyzed urea formaldehyde resin'.
and Marinite stiles and rails .(3) Fire. retardant treated lumber outer'stiles and rails such as soft maple are jacent to the inner members. a
(4) The Weldrok core, innerMarinite stiles and rails and outer fire retardant treated wood stiles and rails are bonded together via the radio frequency bonding method.
14" wide and are used ad- (a) The adhesive can be either a'catalyzed urea-form aldehyde resin reinforced with a precatalyzed phenolic powdered resin HP-401D or a phenol-resorcinol adhesive resin.
surfaces to a uniform thickness of'approximately 1.586".
v (6) The assembly is then sized with a phenolic resin sizing formulation and semi-precured under an infra-red oven. The phenolic resin is similar to that which is manufactured by the Borden Chemical'Company.
(7) The: asbestos elastomer crossband is then sized and also semi-precured in the samemannen as the assembly. Y
The process fabrication steps for the unit areas follows:
(1) A veneer; face is placed on a platform.
. '(2) The previously sized. and. semi-precured asbestos crossband has a phenolic adhesive applied to both surfaces Which is then flashed off and semi-precured under an infra-red oven. 3 After immediate cooling,it is placed on the veneerface. I
(5) 7 After curing, this assembly is then sanded on both The sizing formulation is as follows: i 7 ,Pts. by wt. BR-LA- 1030 (Bakelite Co. Union Carbide & Co.) 30
. (BRLA+1 030.is a slightly alkaline phenol formaldehyde resin of very low molecular weight to insure penetration in depth.)
H'l?40l*DBorden Chem. Co. so Methanol 60 'Tritdl'l X-l()0 (Rohrn & Haas) 0.2
(Triton X,-100 a nonionic wetting-agent) is isooctyl phenyl polyethoxy ethanol.) 7 A dry .preeatalyzed phenolic powdered resin glue.
i The purpose of thissizingis to penertate and seal the inorganic material such that when a compatible phenol vheat resistant resin is used for bonding, it will givebetter holding qualities and strength The' sizing formulation is comprised of'difierent 'phenol ingredients, plus an ad- 7 ditive to aid in penetration. This sizing is of a very light viscosity.-
' After the sizing material is applied, as then semiprecured in' theinfra-rjed oven at approximately 160 a for 35 seconds:
a The asbesto's elastomer crossband, which is approximately .038" to .042" thick 'is also phenolic sized and semi precure'd. This asbestos .cross'band material contributes much to the product for the coeflicients of linear (3) The previously sized unit or 'core fis then applied material. Y (4) Thesecond asbestos cros-sband has adhesive'applied to both surfaces, is curedand cooled' in the same to the other surface of the semi-precured "asbestos manner as the previous one and laid onthe'core assembly. 1
. -5) The second veneer faceis'applied to'the built-up construction.
' (6) The laid-up assembly is I pressed and ,cured via the hot plate process.
(7) After pressing, the 1 /2 hour 'fire door is then trimmed to tolerances, sanded, patched and inspected for imperfections.
. With respect to'the foregoing, the Weldrok corecomprises a material which is rated as .incombustible by the Underwriters Laboratory. -.It is very dimensionally stable and has a minimum compressive strength of about 550 lbs/sq. in. The" material is an excellent heatgins'ulatorfl and is easily machined. The lmaterial is. insoluble: in water. and'w'astested in accordance with standard test methods for fire hazard classification of building materials." a e The inorganic materialsjsuchas Marinite (36 pound) is manufactured by. Johns-Manville andis an.insulating material composed of asbestos fibers, diatomaceous silica It is fireproof and has a low' and an inorganic binder. I
This material was tested rating of 0. This material is used for the inner stiles and rails. I Thisftype of structural frame addsappreciably in preventing burnout around the core materials. 1 The-outer stiles and rails are composedof a fire rethe product;
process. a 7 'What isclairned is: v V
f- 1."A fire door comprisingacore composedv essentially expansion and contraction of the' various organic materials to render 'a better product, Not only does this help' withstand the rigor of the U.L. tests and the ASTM Specifications for the;fire and hose stream tests and applicatiombutfurther aids in dimensional stability of The phenolic adhesive used'for fabrication'is a phenolic type. similargto that produced by the: Borden Chemical The above mentioned phenol, adhesive mixture is applied to bothsurfaces :of the. asbestos crossband at a raterof approximately 35 poundsper thousand square feet 'of single glue line. It is :thenimmediately flashed off by means of a circulating air; and semi-precured under an infra-red oven at approximately 160 F. for 45 seconds.
Y The materialis then immediately cooled with cooling units and placed on the veneer faces. The entire laid-up assembly is then pressed and cured at180 pounds per square inch at 300 F1 for 10 minutes via the hot plate fof calcium silicate subhydrate, a peripheral frame. surrounding said calcium silicate subhydrate on allsidesto form a cbntinuous outside area, saidv peripheral frame tardant treated lumber. Thisis securedby means of. anr aqueous salt solution. .The soft maple. is .treated to refusal via the vacuum pressurefull cell process with a 7 method similar to the ProtexolClass .A{ treatment. This material was tested .in'accordance with ASTM E160-50 forcombustibility properties of ,treated woodf The. adhesive used to bond the Weldrok9core, inner and outer: stiles and rails can either be urea-formaldehyde 1 reinforced with a precatalyzed phenolic resin (HP-401D) or a phenol resorcinol adhesive resin; This is applied to one surface of the Marinite which is then placed against the-Weldrok core. The adhesive is also applied, to one surface of the treated lumber'and placed against the Marinite. ,This entire assembly is then cured, via
a dielectric method. 7 a
-mable decorative veneer is adhered to at least one'of .sa'id crossbands. p v 1 i 5,- ,Afire; door as set forthin claim-3 able to withstand composed essentially of asbestos fibers, diatomaceous earth and an inorganic binder, and a crossband on each side of said core composed essentially of an asbestos neoprenecomposition, andsaid crossbands extending over the entire core and frame'in a single plane direction.
2 A fire door as setforth in claim 1 wherein an untreat-ed, flammable vene'er'is adhered to at least one of said crossbands.
3.. A fire door as set forth in: claim 1 wherein an outer "frame surroundssaid peripheral frame of asbestos fibers,
diatomaceous earth and inorganic binder.
4. A'firedoor' as s'etforth in*claim 3"wherein a flama 1 /2 hour Underwriters Laboratories Fire Test,;wherein said outer frame is treated fire retardant: wood, and a flammable face i adhered to at least one of said cross bands which face comprises at least one ply of fibrous material.
References Cited by the Examiner UNITED STATES PATENTS 2,173,808 9/39 Kellogg 120-35 2,249,591 7/41 Allen 2035 2,534,814 12/50 DOlier 260-41.5 10 2,593,050 4/52 Paul et a1. 2035 2,751,366 6/56 Braenclle 26041.5
6 2,787,345 4/57 Soubier et a1. 18946 X 2,797,450 7/57 Ropel la 20-35 OTHER REFERENCES Underwriters Laboratories, Inc. Report on Composite Fire Doors For Owens Illinois Glass Co., Kaylo Division, Toledo, Ohio, Retardant No. 3221, Feb. 20, 1950, National Board of Fire Underwriters, 2 07 East Ohio St., Chicago, Illinois.
FRANK L. ABBOTT, Primary Examiner.
JACOB L. NACKENOFF, Examiner.
Claims (1)
1. A FIRE DOOR COMPRISING A CORE COMPOSED ESSENTIALLY OF CALCIUM SILICATED SUBHYDRATE, A PERIPHERAL FRAME SURROUNDING SAID CALCIUM SILICATE SUBHYDRATES ON ALL SIDES TO FORM A CONTINUOUS OUTSIDE AREA, PERIPHERAL FRAME COMPOSED ESSENTIALLY OF ADBESTOS FIBERS, DIATOMACEOUS EARTH AND AN INORGANIC BINDER, AND A CROSSBAND ON EACH SIDE OF SAID CORE COMPOSED ESSENTIALLY OF AN ASBESTOS NEOPRENE COMPOSITION, AND SAID CROSSBANDS EXTENDING OVER THE ENTIRE CORE AND FRAME IN A SINGLE PLANE DIRECTION.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US258396A US3196494A (en) | 1963-02-14 | 1963-02-14 | Fire resistant door |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US258396A US3196494A (en) | 1963-02-14 | 1963-02-14 | Fire resistant door |
Publications (1)
Publication Number | Publication Date |
---|---|
US3196494A true US3196494A (en) | 1965-07-27 |
Family
ID=22980370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US258396A Expired - Lifetime US3196494A (en) | 1963-02-14 | 1963-02-14 | Fire resistant door |
Country Status (1)
Country | Link |
---|---|
US (1) | US3196494A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3274734A (en) * | 1964-09-21 | 1966-09-27 | Padde Pty Ltd | Fire resistant door |
US3462339A (en) * | 1966-03-15 | 1969-08-19 | Koppers Co Inc | Fire-retardant panel construction |
US3480494A (en) * | 1966-02-11 | 1969-11-25 | R S Bacon Veneer Co | Method of forming fire retardant panels |
US3635784A (en) * | 1966-03-17 | 1972-01-18 | Jens C Snitker | Solid composite boards having a compact core of adhesive binder and 85{14 98 percent by volume of porous, nonabsorbing granulates selected from the group consisting of cork bark, and vermiculite |
US3994110A (en) * | 1975-04-10 | 1976-11-30 | Champion International Corporation | Three hour fire resistant door, panel or building element, and method of manufacturing the same |
US3998023A (en) * | 1975-08-04 | 1976-12-21 | H. H. Robertson Company | Double-skin insulated building panel |
US3998024A (en) * | 1975-08-04 | 1976-12-21 | H. H. Robertson Company | Double-skin insulated building panel |
US4104828A (en) * | 1977-05-26 | 1978-08-08 | Cal-Wood Door | Solid door having edges of laminated pressed wood fiber sheet material |
US4256798A (en) * | 1978-12-05 | 1981-03-17 | Permagrain Products, Inc. | Moisture-resistant fire-retardant decorative floor and wall coverings and process for the manufacture thereof |
US4343127A (en) * | 1979-02-07 | 1982-08-10 | Georgia-Pacific Corporation | Fire door |
US4748771A (en) * | 1985-07-30 | 1988-06-07 | Georgia-Pacific Corporation | Fire door |
US4811538A (en) * | 1987-10-20 | 1989-03-14 | Georgia-Pacific Corporation | Fire-resistant door |
US20030033786A1 (en) * | 2001-08-17 | 2003-02-20 | Leon Yulkowski | Fire door assembly |
EP1555378A2 (en) * | 2004-01-15 | 2005-07-20 | Schörghuber Spezialtüren GmbH & Co. Betriebs-KG | Fire-proof door |
US20070245661A1 (en) * | 2006-03-30 | 2007-10-25 | William Daniels | Decorative, wood fire-rated door and method |
US20120272616A1 (en) * | 2011-04-29 | 2012-11-01 | Lucas Iii William Henry | Systems and methods for making flush architectural doors using post-consumer materials |
US8691340B2 (en) | 2008-12-31 | 2014-04-08 | Apinee, Inc. | Preservation of wood, compositions and methods thereof |
US9878464B1 (en) | 2011-06-30 | 2018-01-30 | Apinee, Inc. | Preservation of cellulosic materials, compositions and methods thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2173808A (en) * | 1935-12-12 | 1939-09-19 | Johns Manville | Structural unit |
US2249591A (en) * | 1940-04-02 | 1941-07-15 | Peele Company | Fire door |
US2534814A (en) * | 1948-08-07 | 1950-12-19 | Raybestos Manhattan Inc | Production of asbestos-rubber compositions |
US2593050A (en) * | 1952-01-24 | 1952-04-15 | Owens Illinois Glass Co | Composite fire door |
US2751366A (en) * | 1952-05-09 | 1956-06-19 | Du Pont | Rubbers with methoxy containing silica fillers |
US2787345A (en) * | 1952-11-19 | 1957-04-02 | Owens Illinois Glass Co | Fire resistant structural units |
US2797450A (en) * | 1955-08-12 | 1957-07-02 | Roddis Plywood Corp | Fireproof door construction |
-
1963
- 1963-02-14 US US258396A patent/US3196494A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2173808A (en) * | 1935-12-12 | 1939-09-19 | Johns Manville | Structural unit |
US2249591A (en) * | 1940-04-02 | 1941-07-15 | Peele Company | Fire door |
US2534814A (en) * | 1948-08-07 | 1950-12-19 | Raybestos Manhattan Inc | Production of asbestos-rubber compositions |
US2593050A (en) * | 1952-01-24 | 1952-04-15 | Owens Illinois Glass Co | Composite fire door |
US2751366A (en) * | 1952-05-09 | 1956-06-19 | Du Pont | Rubbers with methoxy containing silica fillers |
US2787345A (en) * | 1952-11-19 | 1957-04-02 | Owens Illinois Glass Co | Fire resistant structural units |
US2797450A (en) * | 1955-08-12 | 1957-07-02 | Roddis Plywood Corp | Fireproof door construction |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3274734A (en) * | 1964-09-21 | 1966-09-27 | Padde Pty Ltd | Fire resistant door |
US3480494A (en) * | 1966-02-11 | 1969-11-25 | R S Bacon Veneer Co | Method of forming fire retardant panels |
US3462339A (en) * | 1966-03-15 | 1969-08-19 | Koppers Co Inc | Fire-retardant panel construction |
US3635784A (en) * | 1966-03-17 | 1972-01-18 | Jens C Snitker | Solid composite boards having a compact core of adhesive binder and 85{14 98 percent by volume of porous, nonabsorbing granulates selected from the group consisting of cork bark, and vermiculite |
US3994110A (en) * | 1975-04-10 | 1976-11-30 | Champion International Corporation | Three hour fire resistant door, panel or building element, and method of manufacturing the same |
US3998023A (en) * | 1975-08-04 | 1976-12-21 | H. H. Robertson Company | Double-skin insulated building panel |
US3998024A (en) * | 1975-08-04 | 1976-12-21 | H. H. Robertson Company | Double-skin insulated building panel |
US4104828A (en) * | 1977-05-26 | 1978-08-08 | Cal-Wood Door | Solid door having edges of laminated pressed wood fiber sheet material |
US4256798A (en) * | 1978-12-05 | 1981-03-17 | Permagrain Products, Inc. | Moisture-resistant fire-retardant decorative floor and wall coverings and process for the manufacture thereof |
US4343127A (en) * | 1979-02-07 | 1982-08-10 | Georgia-Pacific Corporation | Fire door |
US4748771A (en) * | 1985-07-30 | 1988-06-07 | Georgia-Pacific Corporation | Fire door |
US4811538A (en) * | 1987-10-20 | 1989-03-14 | Georgia-Pacific Corporation | Fire-resistant door |
US20030033786A1 (en) * | 2001-08-17 | 2003-02-20 | Leon Yulkowski | Fire door assembly |
EP1555378A2 (en) * | 2004-01-15 | 2005-07-20 | Schörghuber Spezialtüren GmbH & Co. Betriebs-KG | Fire-proof door |
EP1555378A3 (en) * | 2004-01-15 | 2008-04-02 | Schörghuber Spezialtüren GmbH & Co. Betriebs-KG | Fire-proof door |
US20070245661A1 (en) * | 2006-03-30 | 2007-10-25 | William Daniels | Decorative, wood fire-rated door and method |
US8037820B2 (en) | 2006-03-30 | 2011-10-18 | William Daniels | Decorative, wood fire-rated door and method |
US8691340B2 (en) | 2008-12-31 | 2014-04-08 | Apinee, Inc. | Preservation of wood, compositions and methods thereof |
US9314938B2 (en) | 2008-12-31 | 2016-04-19 | Apinee, Inc. | Preservation of wood, compositions and methods thereof |
US20120272616A1 (en) * | 2011-04-29 | 2012-11-01 | Lucas Iii William Henry | Systems and methods for making flush architectural doors using post-consumer materials |
US9422765B2 (en) | 2011-04-29 | 2016-08-23 | Recor International, Inc. | Method for making flush architectural doors using post-consumer materials |
US9878464B1 (en) | 2011-06-30 | 2018-01-30 | Apinee, Inc. | Preservation of cellulosic materials, compositions and methods thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3196494A (en) | Fire resistant door | |
US4075804A (en) | Fire resistant asbestos-free door, panel or building elements, and method of manufacture using unique compositions | |
US3994110A (en) | Three hour fire resistant door, panel or building element, and method of manufacturing the same | |
US3987600A (en) | Fire resistant doors | |
AU610867B2 (en) | Fire retardant additives and their uses | |
US3566564A (en) | Fire resisting doors having metallic outer layers | |
JPS6124785A (en) | Door structure | |
KR101563649B1 (en) | Semi-incombustible Expandable Polystyrene Composition | |
KR101797219B1 (en) | nonflammable firewall | |
KR102064271B1 (en) | Fire door | |
US2173808A (en) | Structural unit | |
US3470977A (en) | Fire resistant glass fiberboard and method of making same | |
KR20120085552A (en) | the insulation composite panel with wood and the manufacturing method thereof | |
US3832812A (en) | Fire retardant insulated modular building panels | |
KR102265318B1 (en) | Fire door with improved heat insulation | |
JP2017002668A (en) | Building material for window structure and fire door structure, and window structure and fire door structure including the same | |
KR20190136376A (en) | Nonflammable composite insulation board | |
CN205444519U (en) | Novel thermal insulation board | |
JPS63303731A (en) | Incombustible ligneous composite sheet | |
JPH0681407A (en) | Metallic sandwich panel excellent in sound absorption | |
KR100494340B1 (en) | Fire door and that of manufacturing method | |
JPS634722Y2 (en) | ||
KR102242117B1 (en) | Quasi-noncombustible heat-insulating composite board | |
JPS6158735A (en) | Refractory composite board | |
CN111086081B (en) | Preparation process of fireproof door plate |