JPH0722470Y2 - Wooden door - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a wooden door having improved fireproof performance.

[Technical background and purpose of devising]

Conventionally, wood is a flammable material, and under the present circumstances, no wooden door is recognized as a fire door at the opening of a building under the legal regulations. However, wood originally has properties such as low deformation at high temperatures, high heat insulation, a surface carbonized layer delays internal combustion, and easy processing, and by utilizing these properties, Rather, it may be possible to produce ones that perform better than fire doors made of other materials. In addition, due to the pursuit of safety, the interior doors inside the building are also required to have improved fire prevention performance, although they are outside the scope of legal regulations.

The fireproof performance of wooden doors has been examined by various research institutes, and "Test study on fireproof and fireproofness of wooden doors" Susumu Yamada, Wood Preservation, vol.13-2 (1987), "About third-class fire doors" Its performance has been announced in Shinichi Sugawara, Building Letter, '82 .4, etc. In the framed panel type door which is the subject of the present invention, these results also revealed that the flame penetrates from the thinnest part of the panel among the members constituting the door and loses fire prevention performance. There is.

In general, wood retains fire protection performance such that the penetration of flames is impeded if it has a certain thickness, but in the framed panel type wooden door, the thickness of the panel and the crosspiece It is customary to make it thinner than the thickness of other members such as, and when a flame is generated, the penetration of the flame starts from the panel portion. As a countermeasure to this, increasing the thickness of the panel is one means, but if the panel is made thicker, the thickness of the fitting parts of other members such as frames and crosspieces that have been patterned to fit the panel It becomes thinner than other parts and the panel is not held in the event of a fire, and the phenomenon of flame penetration occurs.

As described above, the present invention improves the fireproof performance of the wooden door by improving the fitting of the panel and the other members such as the frame and the crosspiece of the frame panel type wooden door, which are the weakest against flames. The purpose is to improve.

[Means for achieving the purpose]

The wooden door ( 1 ) (hereinafter referred to as the door) of the present invention is manufactured and configured as follows.

A frame (2) that composes the door ( 1 ) of dry and humidity-controlled wood,
Cut according to the specified dimensions of the crosspiece (3), panel (4),
After the plane is processed, a machine such as a molding machine is used to perform chamfering, patterning, and the like to obtain a door member. At this time, an inorganic non-combustible seal mainly composed of hydrous sodium silicate that foams when heated to a fitting portion (5) where the panel (4) and other members such as the frame (2) and the crosspiece (3) are heated. Material (7)
A groove (6) for inserting (hereinafter referred to as a sealing material) is processed. The sealing material (7) is attached to the panel (4) during assembly.
The door ( 1 ) of the present invention is constructed by being inserted into the groove (6) of the present invention and assembled together with other members by using a dowel, an adhesive and the like. The door ( 1 ) is finished by surface finishing and painting. At the time of coating, a flame retardant such as an organic phosphorus type and a halogen type may be added to the coating.

The sealing material (7) is a heat-foamable inorganic material mainly composed of hydrous sodium silicate containing 15 to 35% by weight of water, and hardened with glass fiber, binder, etc., covered with epoxy resin, etc. Since it is inserted in the weakest part of the wooden door against the flame, when the flame occurs, the sealing material begins to soften with a rise in temperature.
Blisters are formed at ~ 150 ° C. The thickness increases with the start of foaming, and the water disappears when the temperature approaches 200 ° C.
A non-combustible layer having a temperature of about ℃ is formed on the fitting portion (5) to prevent penetration of flame, and the non-combustible layer is formed on the panel (4) and other members such as the frame (2) and the crosspiece (3). It becomes a fixed layer of and improves the fireproof performance of the wooden door.

〔Example〕

After cutting Niato material with moisture content adjusted to 10 ± 3% according to the prescribed dimensions of each member and plane processing, chamfering with a processing machine such as a molding machine, pattern taker, boring machine, etc.
A frame (2) having a thickness of 36 mm, a crosspiece (3) and a panel (4) having a flat surface portion thickness of 28 mm and a chamfered portion minimum thickness of 10 mm are obtained by performing patterning, drilling and the like. At this time, a 2 mm-thick hydrated sodium silicate-based sealing material (7) (BASF, trade name Parsol) should be inserted into a portion corresponding to the fitting portion (5) between the panel (4) and other members. Make a groove (6) with a width of 4 mm in advance. The depth of each groove (6) is preferably about the chamfered portion length (8) plus about 10 to 15 mm for each member. Then, the sealing material (7) is inserted into the groove (5) of the panel (4), and each member is assembled by using the dowel made from the same nito material and the urea resin adhesive together, and the door of the present invention. ( 1 ) is obtained. The door ( 1 ) is finished by surface-polishing and then polyurethane coating.

When the fireproof performance of the wooden door obtained by the present invention and the wooden door without the conventional sealing material inserted was tested in the same manner as the fire resistance heating test of JIS A 1311, the conventional wooden door started heating. The flame penetrated from the panel fitting part 15 minutes later, whereas the wood door of the present invention penetrated the flame from the panel part 35 minutes later.

〔effect〕

According to the present invention, as described above, in the wooden panel door of the framed panel type, the inorganic sealing material mainly composed of hydrous sodium silicate that foams when heated to the panel fitting portion which is weakest to the flame is inserted. Therefore, even if the thin wood part of the panel fitting part burns during a flame, not only the sealing material foams and becomes a non-combustible layer to prevent penetration of the flame but also penetration of smoke generated at the same time as the flame. There is also an effect. The sealing material is effective only in the panel fitting portion, but the effect is further improved by forming the panel into a sandwich structure having the sealing material as the core.

Since the door of the present invention has fireproof performance as described above even if it is made of wood, it is effective not only for the aesthetic appearance of a wood material as a door inside a building, but also for its excellent safety.

[Brief description of drawings]

FIG. 1 is a front view of a wooden door according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG. 1, and FIG. 3 is a line BB ′ in FIG.
FIG. 4 is a cross-sectional view of the surface of the conventional wooden door. 1 ... Frame-panel type wooden door 2 ... Frame, 3 ... Crosspiece, 4 ... Panel 5 ... Fitting part, 6 ... Groove, 7 ... Sealing material 8 ... Chamfer length

Claims (1)

[Scope of utility model registration request] 1. A wood-based door characterized in that an inorganic non-combustible sealing material composed mainly of hydrous sodium silicate is inserted into a fitting portion between a panel and other members such as a frame and a crosspiece.