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KR-20260065188-A - Plywod semi-combustible treatment machine

KR20260065188AKR 20260065188 AKR20260065188 AKR 20260065188AKR-20260065188-A

Abstract

The present invention relates to a flame-retardant treatment device for a wood panel, comprising: a flame-retardant mold (100) for flame-retardant treatment of a wood panel (PN) in a vacuum state; a flame-retardant liquid supply unit (200) for supplying a flame-retardant liquid inside the flame-retardant mold (100); and a vacuum unit (400) for providing a vacuum to the flame-retardant mold (100) so that the flame-retardant liquid from the flame-retardant liquid supply unit (200) is forcibly absorbed into the wood panel (PN), and flame-retardant treatment is performed in a vacuum.

Inventors

  • 임경택

Assignees

  • (주) 대현목재

Dates

Publication Date
20260508
Application Date
20241101

Claims (5)

  1. Flame retardant mold (100) that flame-retardants a wooden panel (PN) in a vacuum state; A flame retardant liquid supply unit (200) that supplies a flame retardant liquid to the interior of the flame retardant mold (100); and It includes a vacuum unit (400) that provides a vacuum to the flame retardant mold (100) so that the flame retardant liquid of the flame retardant liquid supply unit (200) is forcibly absorbed into the wood panel (PN) and flame-retardant treated; The flame-retardant mold (100) above is, A vacuum fixing die (110) that sets the above-mentioned wood panel (PN) in a seated state and has a vacuum port (114) that provides vacuum pressure to at least a part of one side facing one side of the wood panel (PN) while connected to the vacuum unit (400), and absorbs the flame retardant liquid from the flame retardant liquid supply unit (200) through the other side of the wood panel (PN) by the vacuum of the vacuum port (114) to flame retard the wood panel (PN); A vacuum lifting die (120) that is detachably coupled to the vacuum fixing die (110) and seals the wood panel (PN) in a sealed state together with the vacuum fixing die (110) so that the wood panel (PN) is flame-retardant with the flame-retardant liquid of the flame-retardant liquid supply unit (200) in a vacuum state; and A flame-retardant treatment device for a wood panel comprising: a vacuum lifting unit (130) for lifting the above vacuum lifting die (120).
  2. In claim 1, the flame-retardant mold (100) is, The above vacuum port (114) is characterized by being formed with a size corresponding only to a central part of one side of the wood panel (PN). It further includes a port packing (114a) installed along the edge of the vacuum port (114) and tightly sealed against the wood panel (PN) to seal the central part of the wood panel (PN). The flame-retardant mold (100) above is, A flame-retardant treatment device for a wood panel, characterized by locally supplying the vacuum pressure of the vacuum unit (400) to a central portion provided on one side of the wood panel (PN) through the vacuum port (114), and absorbing the flame-retardant liquid supplied from the flame-retardant liquid supply unit (200) to the other side of the wood panel (PN) through the local vacuum pressure of the vacuum port (114) to flame-retardant the wood panel (PN).
  3. In Article 1, It further includes a pressurizing unit (300) that provides pneumatic pressure to the flame-retardant mold (100) so that the wood panel (PN) is pressurized by pneumatic pressure to accelerate flame-retardant treatment. The above pressurizing part (300) is, A pneumatic supply pipe (310) connected to the above vacuum lifting die (120) in a penetrating state; and A flame-retardant treatment device for a wood panel comprising: a pneumatic pump (320) that supplies compressed air to the pneumatic supply pipe (310).
  4. In Article 1, It further includes a drying mold (500) for drying the wood panel (PN) that has been flame-retardant treated by absorbing the flame-retardant liquid by the vacuum of the vacuum section (400), and The above drying mold (500) is, A drying fixing die (510) in which the above-mentioned wood panel (PN) is set up and dried; A drying lifting die (520) detachably coupled to the drying fixing die (510) and shielding and isolating the wood panel (PN) together with the drying fixing die (510); A drying lifting unit (530) for raising and lowering the above drying lifting die (520); and A flame-retardant treatment device for a wood panel comprising: a heat source (550) for heating and drying the wood panel (PN) shielded by the drying lifting die (520).
  5. In Article 1, A weighing unit (600) for measuring the weight of the above wood panel (PN); and The system further includes a quality verification unit (700) that verifies the quality by comparing the weight of the wood panel (PN) measured by the weight measuring unit (600) before being set in the flame-retardant mold (100) with the weight of the wood panel (PN) measured by the weight measuring unit (600) after being dried in the drying mold (500). The above-mentioned positive/negative verification unit (700) is, A primary weight verification unit (710) for verifying the primary weight of the wood panel (PN) measured by the weight measuring unit (600) before being set in the flame-retardant mold (100); A secondary weight verification unit (720) for verifying the secondary weight of the wood panel (PN) measured by the weight measuring unit (600) after drying in the drying mold (500); A difference value checking unit (730) that checks the difference value by comparing the above first weight with the second weight; A reference weight setting unit (740) having a reference weight set for comparison with the above difference value; and A flame-retardant treatment device for a wood panel comprising: a weight judgment unit (750) that determines whether the standard weight of the standard weight setting unit (740) is good or bad by comparing it with the difference value.

Description

Flame retardant treatment device for wood panels {Plywod semi-combustible treatment machine} The present invention relates to a flame-retardant treatment device for wood panels that manufactures flame-retardant treated wood panels by forcibly absorbing a flame-retardant liquid into the wood panels. Recently, efforts to reduce carbon emissions and maintain carbon neutrality are becoming a reality worldwide. Among building materials, wood materials emit the least amount of carbon while actually storing carbon (approximately 45% carbon dioxide). These wood materials are widely used in eco-friendly structures that require seismic resistance, durability, fire resistance, and/or thermal insulation. In particular, wood materials possess superior tensile and compressive strength per unit weight compared to steel or concrete, and wood structures are still widely used due to this strength. Lumber materials include wood panels composed of Cross-Laminated Timber (CLT), Laminated Veneer Lumber (LVL), or structural plywood, which prevent warping and bending of the wood and can withstand loads from all directions. CLT is a method of laminating timber and laminating and bonding it by crossing it along the length. LVL is a method of bonding multiple layers of thin veneers formed by slicing thin sheets. Structural plywood is plywood that possesses rigidity and strength for structural use. When coniferous wood is used as the material for wood panels composed of CLT or LVL, thermal decomposition occurs during a fire; if the temperature exceeds 200°C, the carbon layer turns black, forming a char layer at a rate of approximately 0.6 mm per minute and 36 mm per hour. This formed char layer has a minimum thickness of about 0.6 mm per minute, capable of withstanding temperatures of approximately 305°C for about 10 minutes. As the exposure time to fire increases, the layer thickens, blocking heat transfer into the interior of the wood panel. Consequently, since sufficient heat is not transferred internally, the generation of volatile gases is suppressed, and combustion is halted as the supply of external heat sources is cut off. In other words, even when exposed to fire, wood panels provide safer performance against high temperatures than metal due to the action of the char layer formed on the surface. Therefore, wooden buildings utilizing wood materials can be considered safer as they secure evacuation time, ensure safety and visibility for firefighting activities, and delay the spread of fire. Korean Patent Registration No. 10-2685769 (Daehyun Wood) is an invention by the applicant of the present invention, which provides a wood panel (PN) into which a pipe-shaped reinforcing material (70) is inserted as shown in FIG. 1. This wood panel (PN) is flame-retardant treated with a flame-retardant liquid as described below. First, for flame-retardant treatment, the wood panel (PN) is cut from raw wood into a board shape as shown in FIG. 2(a) and then placed in a vacuum tank (T) as shown in FIG. 2(b). Then, moisture contained in the wood panel (PN) is removed as the vacuum tank (T) is vacuumed by a vacuum pump (PM). Subsequently, the wood panel (PN) is immersed in a flame-retardant liquid as a standard wood flame-retardant liquid is filled into the vacuum tank (T), which is then vacuumed and released after the moisture has been removed, as shown in FIG. 2(c). Subsequently, the wood panel (PN) is pressurized by air pressure as the vacuum pump (PM) is reversed or as an unillustrated pneumatic pump (e.g., a compressor) is operated to supply air into the vacuum tank (T). That is, the wood panel (PN) is pressurized by air as the internal pressure of the vacuum tank (T) rises due to the air supply. The wood panel (PN) smoothly absorbs the flame retardant liquid by pressurization. The wood panel (PN) may also be pressurized in the manner described above after the flame retardant liquid is removed from the vacuum tank (T). At this time, the flame retardant liquid is removed after a sufficient immersion time (e.g., 10 minutes to 24 hours) of the wood panel (PN) has elapsed. Alternatively, the wood panel (PN) may be coated with a flame retardant as the flame retardant is sprayed through a nozzle (not shown) installed inside a vacuum tank (T). After the flame retardant is applied to the wood panel (PN) for a sufficient application time (e.g., 3 to 30 minutes), it is pressurized in the manner described above. Afterward, the wood panel (PN) is dried by a heater (H) as shown in (d) of FIG. 2. At this time, the wood panel (PN) may be dried inside the vacuum tank (T) for about 15 to 30 minutes with hot air at about 60 to 70°C by a heater (H) built into the vacuum tank (T) as shown, or alternatively, it may be dried for the aforementioned temperature and time in a separate, unillustrated heating furnace equipped with a heater (H). Next, the wood panel (PN) is slow-cooled inside a vacuum tank (T) to prevent warping by slow cooling, and then left at room te