JPH07109876A - Wooden fireproof/soundproof door panel - Google Patents

Abstract

PURPOSE:To provide a lightweight door excellent in fireproof property at a low cost by laminating phenol foam and a mineral fiber board in a wooden frame applied with the flame resistance process to form a core material, and covering the surface with a decorative board. CONSTITUTION:A wooden raw material 5 processed with a phosphorus, boric, or water glass fire protecting agent, phenol foam 3 foamed with a phenol resin, and a mineral fiber board 2 mainly made of rock wool are laminated to form a core material. The mineral fiber board 2 may be laminated on the whole face of the core material. Inorganic thermal expansion sheets 4 are incorporated at end faces, and natural veneer-stuck decorative veneers 1 and decorative architrave materials 7 are fitted on both faces. An inorganic sound insulation sheet can be inserted between the core material and the surface material 1 as required. A lightweight wooden door excellent in fireproof property and sound insulation property can be obtained at a low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood-based fireproof and soundproof door used for openings in general houses, apartment houses, hotels, public facilities and the like.

[0002]

2. Description of the Related Art Conventionally, metal-based door panels have been the mainstream of fireproof door panels used for openings in general houses, apartment houses, public facilities and the like. However, the metal-based door panel has a problem in that it has no wood texture, no warmth, lacks in designability, is heavy, and has poor workability. In recent years, with the advent of foreign-made wood-based door panels, flame-retardant wood in Japan,
Wooden door panels made of a combination of gypsum board, inorganic non-combustible board such as calcium silicate board, paper honeycomb, flame-retardant insulation board, high-density phenol foam board, etc. have come to be manufactured. However,
The wood-based door panel has designability, warmth, and lightness as compared with a metal-based door panel, but it is expensive and still has a problem that it cannot be said that it is heavy and workable.
Furthermore, there is also a problem that the soundproof performance is insufficient.

[0003]

DISCLOSURE OF THE INVENTION The object of the present invention is to reduce the weight and improve the soundproofness of a wooden fireproof and soundproof door panel without impairing the design, warmth and fireproofness of the woody fireproof and soundproof door panel which can be manufactured at low cost. To provide door panels.

[0004]

A door panel according to the present invention for solving the above problems has a density of 40 to 200 kg /
A panel material composed of a core material and a wood-based material, which is made by laminating non-combustible and fire-resistant mineral fiber boards having a density of 300 to 500 kg / m ^{3 on} both sides of m ³ phenol foam, a frame material,
The door panel is made of crosspieces, and the inorganic heat-expandable sheet is incorporated in the outer peripheral portion of the door panel. For the purpose of further improving the soundproofing property, an inorganic type sound insulation sheet is interposed between the panel surface and the core material.

The phenol foam forming the core material of the door panel of the present invention is a resol type phenol resin,
Examples thereof include a modified phenol resin and a phenol foam obtained by foaming and curing a novolac type phenol resin having a softening point of 30 to 80 ° C.

The resol-type phenol resin is a liquid phenol resin obtained by a conventional method using phenols and aldehydes with an alkaline catalyst such as potassium hydroxide, calcium hydroxide or amine.

The modified phenol resin is obtained by modifying the resol type phenol resin or the benzylic type phenol resin obtained with an acetate catalyst with an isocyanate compound, a polyester resin type prepolymer, a phenol resin type prepolymer, an epoxy resin type prepolymer or the like. It is a type.

The novolak type phenol resin is a solid type resin obtained by using an oxalic acid catalyst for phenols and aldehydes, and has a softening point of 30-80.
The reason why the temperature is set to 0 ° C. is to add a foaming agent, a foam stabilizer, and a curing agent to the resin in the softening point range to foam and cure the resin at a temperature of 130 to 170 ° C.

Phenol foams are as described above, but flame retardants such as aluminum hydroxide, boric acid and ammonium polyphosphate, inorganic fibers such as sepiolite and glass fibers, inorganic aggregates such as shirasu balloon, talc, mica and clay are used. Including those that have been compounded. The density of the phenol foam is 40 kg, which is determined from the density (lower limit value) with good compression characteristics in terms of durability during manufacturing and use of the panel.
/ M ³ or more is required. The upper limit is not particularly limited, but 200 kg / m ³ or less is preferable from the viewpoint of weight reduction.

The non-combustible and fire-resistant mineral fiber board constituting the core material of the door panel of the present invention is mainly composed of rock wool, and a small amount of organic fibers such as kraft pulp, recycled pulp and vinylon; attapulgite and sepiolite. ,
Inorganic fiber such as potassium titanate fiber, glass fiber, ceramic wool, inorganic filler such as clay, mica, gypsum, talc, aluminum hydroxide, calcium carbonate, vermiculite, shirasu balloon, boric acid; phenol resin, melamine resin, poval It is obtained by drying and curing a wet board obtained by paper-making an aqueous slurry comprising a binder such as a starch, an acrylic resin and the like; and a binding aid such as polyacrylamide and a sulfuric acid band with a cylinder or fourdrinier paper machine.
From the viewpoint of strength and fire resistance, a rock wool content of 70 wt% or more and a density of 300 kg / m ³ are required, and the upper limit value is not particularly limited, but 500 kg / m ³ or less is preferable from the viewpoint of weight reduction.

The wood-based materials such as the surface panel, the frame and the crosspiece of the present invention are the same as the conventional ones, such as natural wood, laminated wood, or, if necessary, phosphorus-based fire retardants such as diammonium phosphate and aluminum phosphate. , Natural wood treated with a boron-based fireproofing agent such as boric acid, silicate-based fireproofing agent such as water glass, laminated wood, and natural wood and laminated wood made up of the wood and natural or synthetic veneer, etc. be able to.

The inorganic heat-expandable sheet used in the present invention is a conventionally used hydrous sodium silicate-based heat-expandable sheet, a graphite-type heat-expandable sheet, and an aluminum foil-bonded heat-expandable sheet from the viewpoint of design. A sheet can be mentioned. A suitable thickness is 2-5 mm.

The sound insulation sheet used in the present invention includes:
Examples thereof include a soft sound insulation sheet formed by kneading metal powder such as iron powder and lead powder into a synthetic resin such as vinyl chloride resin as a binder and molded into a sheet, or a hard sound insulation sheet obtained by rolling a lead sheet. A thickness of 3 mm or less is suitable in terms of weight.

The door panel of the present invention includes a front panel, a frame,
Crosspieces, cores, and sound insulation sheets are joined with screws or adhesives, but as an adhesive, it is difficult to use phenol resin adhesives such as resorcinol or aluminum hydroxide, dibromopropyl phosphate, etc. It is preferable to use a phenol resin adhesive containing a flame retardant.

[0015]

Function: The door panel of the present invention has a density of 40 to 200 kg.
/ M ³ Phenolic foam board with a density of 300-5 on both sides
Non-combustible mainly composed of rock wool of 00 kg / m ³ ,
Excellent lightness and fire resistance can be obtained by using a core material laminated with refractory mineral fiber boards. Since an inorganic heat-expandable sheet is incorporated in the outer peripheral portion of the door panel, it heats and expands in the event of a fire, closing the gap between the door frame and the door to prevent smoke and fire from entering. In addition, the panel surface, the frame, and the crosspiece are made of wood-based material, which gives a wood texture and warmth, and is excellent in design. By interposing an inorganic sound insulation sheet between the panel surface and the core material, more excellent sound insulation can be obtained.
Further, by treating the panel surface, the frame material, and the crosspiece material with a phosphorus-based, boron-based, or water-glass-based fireproofing agent, superior fireproofness can be obtained.

[0016]

【Example】

[Example 1] As shown in the structure of Fig. 1, phenol foam 3 (manufactured by Nitto Boseki Co., Ltd., Firelock FN)
(Resol-type phenol foam), density 50kg / m
³ , thickness 20mm, width 731mm, height 1988mm)
On both sides of the mineral fiber board 2 (Nitto Boseki Co., Ltd., N
T-board, density 430kg / m ³ , thickness 9mm, width 75
1 mm, height 2008 mm) is bonded with an adhesive (Dainippon Ink and Chemicals, Inc., resorcinol adhesive) to form a core material, and block laminated wood 6 (thickness, 28 mm, width 5)
0mm) flame-retarded wood 5 (diammonium phosphate-treated wood, thickness 5mm, width 43mm) is processed and stuck to the frame material, and the frame material is attached to the four circumferences of the frame material. Heat expansion sheet 4 (made by Askutechnica Co., Ltd., cut sheet G-J2 (graphite type expansion sheet), thickness 3 mm, width 28 mm) is attached to the four circumferences of the core material and frame material, and natural veneer plates are attached to both sides. Makeup veneer 1
(2.5 mm) adhesive (Dainippon Ink and Chemicals, Inc.)
Made with resorcinol adhesive) and fitted with natural veneer decorative frame material 7 (thickness 3.0 mm) on the four sides of the frame material. The wood fireproof and soundproof door panel of the present invention (width 843 mm, height 2100).
mm, thickness 43 mm) was obtained.

[Example 2] As shown in the structure of Fig. 2, phenol foam 3 (manufactured by Nitto Boseki Co., Ltd., Firelock FN (resole type phenol foam), density 50 kg / m ³ , thickness 25 mm, width 731 mm, Height 1
Flame-retardant treated wood 5 (diammonium phosphate treated block laminated wood, thickness 25 mm, width 50 m) on the four sides of 988 mm)
m) The frame material is attached, and the heat-expandable sheet 4 is attached to the four circumferences of the frame material.
(Ask Technica Co., Ltd., cut sheet G-J2 (graphite heat expansion sheet), thickness 3 mm, width 25 m
m) attached, phenol foam 3, flame-retarded wood 5
A mineral fiber board 2 (manufactured by Nitto Boseki Co., Ltd., NT board, density 430 kg / m ³ , thickness 7 mm, width 837 mm, height 2)
094mm) adhesive (Dainippon Ink and Chemicals, Inc.)
Made with a resorcinol adhesive), and a natural veneer laminated veneer 1 (thickness 2.
5 mm) with an adhesive (Resorcinol adhesive manufactured by Dainippon Ink and Chemicals Co., Ltd.), a natural veneer decorative frame material 7 (thickness 3.0 mm) is attached to the four circumferences, and the wood-based fireproof and soundproof door panel of the present invention (width) 843 mm, height 2100 mm, thickness 44 mm) was obtained.

[Embodiment 3] In the construction of the door panel of Embodiment 1, a sound insulating sheet 8 (Toho Sheetram Co., Ltd.) is provided between the flame-retarded wood 5 on both front and back surfaces, the mineral fiber board 2 and the natural veneer-coated decorative veneer 1. ) Cut phone LT-1, thickness 0.3
mm, width 828 mm, height 2094 mm) except that the wood-based fireproof and soundproof door panel of the present invention (width 843 mm, height 2100 mm, thickness 45) was used in the same manner as in Example 1.
mm) was obtained.

[Performance of door panel] Measurement of fireproofing and soundproofing: A wood stud is 40 mm, and a wall made of gypsum board (two gypsum boards having a thickness of 12 mm) is formed on both sides of the stud. Further, the door scope is a door frame in which a three-way frame made of flame-retardant decorative wood with a thickness of 30 to 45 mm and a slippery and airtight sealing material (neoprene rubber gasket) made of flame-retardant wood with a thickness of 50 mm are inserted into the door body. The door body with the lever handle attached was fixed at three hinges, and the door frame and the door body were configured. The performance is shown in Table 1.

[0020]

[Table 1] Note 1: Fireproofness ... Ministry of Construction Notification No. 1125 JIS A
Performance evaluation was conducted for the A and B species by the 1311 method. Note 2: Soundproofing: Sound insulation performance of building openings was evaluated according to JIS A 1419 method.

[0021]

As described above, the wood-based fireproof and soundproof door panel of the present invention is lightweight and excellent in fireproofing and soundproofing. Furthermore, by changing the pattern shape of the surface panel, it has the warmth and design of wood, and the wood-based insteps of general houses, apartments, hotels, public facilities, etc., fire protection of Otsu, and sound insulation of TS-25 or higher. It can be effectively used as a door having.
In addition, since it is lightweight, loading and unloading of doors at the construction site, hanging and adjustment of doors are easy, and workability is also good.

[Brief description of drawings]

FIG. 1 is a horizontal cross-sectional schematic explanatory view of a wood-based fireproof and soundproof door panel of Example 1.

FIG. 2 is a horizontal cross-sectional schematic explanatory view of a wood-based fireproof and soundproof door panel according to a second embodiment.

FIG. 3 is a horizontal cross-sectional schematic explanatory view of a wood-based fireproof and soundproof door panel according to a third embodiment.

[Explanation of symbols]

 1: Natural veneer pasting decorative veneer 2: Mineral fiber board 3: Phenol foam 4: Heat expansion sheet 5: Flame-retardant wood 6: Block laminated wood 7: Natural veneer decorative frame material 8: Sound insulation sheet

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area E04B 1/90 K 1/94 V

Claims (3)

[Claims] 1. A door panel in which a panel surface, a frame, and a crosspiece are made of a wood-based material, including a core material formed by laminating non-combustible and fire-resistant mineral fiber boards on both sides of phenol foam. A wood-based fireproof and soundproof door panel, characterized in that an inorganic heat-expandable sheet is incorporated in the outer peripheral portion of the panel. 2. A wood-based fireproof and soundproof door panel according to claim 1, wherein an inorganic soundproof sheet is interposed between the panel surface and the core material. 3. The wood-based fireproof and soundproof door panel according to claim 1, wherein the panel surface, the frame and the crosspiece are treated with a phosphorus-based, boron-based or water glass-based fireproofing agent.