Wood fireproof door filled with alumina fibers and manufacturing method thereof

Abstract

The invention belongs to the technical field of home decoration, and relates to a wood fireproof door filled with alumina fiber, which comprises a fireproof door main body, the periphery of the fireproof door main body is provided with a door frame, the door frame is internally provided with a door leaf, the door leaf comprises a door leaf frame, a first panel, a second panel and a fireproof filling core material, the first panel and the second panel are arranged on the front face and the back face of the door leaf respectively. Wherein a plurality of glass magnesium board division bars are arranged in the door leaf frame and are evenly arranged in parallel in the length direction of the frame, glass magnesium board strips are attached to the inner side of the door leaf frame, the interior of the door leaf frame is arranged into a plurality of rectangles through the glass magnesium board division bars and the glass magnesium board strips, and the fireproof filling core materials are aluminum oxide fibers and are filled in the rectangles. The invention further discloses a manufacturing method. The aluminum oxide fiber is used as the fireproof filling core material, application of the aluminum oxide fiber in the field of fireproof doors is achieved, and the defects that a traditional fireproof door filling core material is high in cost, and a fireproof door is high in overall density and heavy are overcome with low cost.

Description

Technical Field

[0001] The invention belongs to the technical field of home decoration, and relates to a fireproof door, in particular to a wooden fireproof door filled with alumina fiber and a manufacturing method thereof. Background Art

[0002] Fire doors are special-purpose doors that, in addition to the functions of ordinary doors, also have the special function of preventing the spread of fire and smoke. The market size of the industry is closely related to the real estate market. In addition, the enhancement of social safety awareness has also become a booster for the development of the fire door industry. For example, the use of fire door products has been listed as a mandatory inspection item for fire inspection of housing buildings, which is also conducive to the development of the fire door industry.

[0003] Fire doors are mainly composed of door frames, door leaf frames, door leaf panels, door leaf fillings, fireproof hardware accessories, fireproof expansion sealing strips and other components. According to the material, they can be divided into steel fire doors, wooden fire doors and steel-wood fire doors; according to the filling material, they can be divided into insulation type, partial insulation type and non-insulation type; according to the fire resistance level, they can be divided into A1.50 (Grade A), A1.00 (Grade B) and A0.50 (Grade C). As the main type of fire door products, wooden fire doors have the advantages of good decoration, economy, environmental protection, light weight, easy construction and packaging and transportation compared to steel fire doors. They are widely used in fire-proof places in high-rise buildings and civil and industrial buildings, such as hotels, restaurants, living rooms, warehouses, oil depots, machine rooms, power distribution rooms and other places. The performance of the fire door core filling material is mainly reflected in its fire resistance and heat insulation effect, which is an important part of the inspection and acceptance of filling materials in the fire door system. As a building component, the core board of the fire door will undergo significant changes in its physical structure under the high temperature environment of a fire, resulting in a rapid decrease in load bearing capacity.

[0004] The fire door filling materials currently used are mainly non-combustible materials such as expanded perlite board, magnesium oxide perlite board, flame retardant perlite board, foam cement fireproof board, and fire-resistant gypsum board. Dou Hongjie proposed the concept of developing soluble fiber door core boards to meet environmental protection issues and fire resistance levels, which has great application prospects. Ran Lingzui and others developed a fire door core filling material with a special structure, which was filled in a large-size steel single-leaf fire door, reaching or even exceeding the fire resistance requirements of national standards. Chen Yuming and others proposed suggestions on improving the thermal insulation performance of fire doors from the aspects of raw materials, structure and process, and gave solutions. Li Jun used the pre-filled aggregate grouting method to prepare concrete fire door core board test blocks, and analyzed their thermal conductivity, bulk density, fire resistance, etc. The study showed that various performance indicators fully met the requirements of relevant national standards. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a wooden fire door filled with alumina fiber, that is, to make a wooden fire door with alumina fiber as a fireproof filling core material, thereby realizing the application of this material in the field of wooden fire doors and expanding its application scope. With its relatively low cost, it overcomes the shortcomings of traditional fire door filling core materials with high cost and the overall high density and bulkiness of fire doors.

[0006] Technical Solution

[0007] A wooden fireproof door filled with alumina fiber, comprising a fireproof door body, a door frame is arranged around the fireproof door body, and a door leaf is installed therein, the door leaf comprises a door leaf frame, a first panel, a second panel and a fireproof filling core material, the first panel and the second panel are respectively arranged on the front and back sides of the door leaf; wherein, a plurality of glass magnesium board spacers are arranged in parallel and evenly along the length direction of the frame in the door leaf frame, and glass magnesium board strips are attached to the inner side of the door leaf frame, and the interior of the door leaf frame is arranged into a plurality of rectangles by the glass magnesium board spacers and the glass magnesium board strips, and the fireproof filling core material is alumina fiber, which is filled in the rectangles.

[0008] In a preferred disclosed example of the present invention, the door leaf frame is spliced ​​into a rectangle by laminated veneer lumber (LVL) or multiple layers of plywood with a thickness of 20 to 40 mm.

[0009] Furthermore, the thickness of the glass magnesium board spacer is 20-40 mm, and the number is 6-10 pieces; the thickness of the glass magnesium board strip is 3-8 mm.

[0010] In the preferred disclosed example of the present invention, the fireproof filling core material is alumina fibers arranged in a felt shape at a density of 120 to 140 g / m 2 The arrangement density is evenly spread between the glass magnesium board spacers, filling 2 to 4 layers.

[0011] In a preferred disclosed example of the present invention, a decorative film is also attached to the surface of the door leaf; one end face of the door leaf is rotatably connected to one end face inside the door frame through a fireproof hinge.

[0012] In a preferred disclosed example of the present invention, door casing lines are also provided on the front and rear end surfaces of the door frame, and the interior of the door frame is filled with a door frame fireproof core material, which is fireproof rock wool.

[0013] The second purpose of the present invention is to disclose a method for manufacturing the above-mentioned wooden fire door filled with alumina fiber.

[0014] A method for manufacturing a wooden fireproof door filled with alumina fiber, comprising the following steps:

[0015] (1) The door panels are sanded twice with a sanding machine, i.e., coarse sand and fine sand, to ensure that the surfaces of the two panels are smooth, and colored decorative paper with wood texture and adhesive on the back is covered on the panel surface;

[0016] (2) The main frame of the door leaf is made of 20-40 mm thick laminated veneer lumber (LVL) or multi-layer plywood. The interior is divided into parallel rectangles by glass magnesium board spacers. Alumina fiber is filled in the rectangles as a fireproof filling core material;

[0017] (3) Cut the door leaf panel into a size that matches the main frame, apply polyvinyl acetate composite adhesive evenly on two pieces of PVC decorative paper or melamine impregnated paper to cover the non-textured surface of the panel, place it on both sides of the main frame, and use cold pressing or hot pressing technology to make the door leaf body, and then use CNC edge cleaning machine cutting, edge sealing and CNC milling and other processes to make the door leaf of the fire door;

[0018] (4) The method for manufacturing the door frame panel is the same as the process for manufacturing the door leaf panel described in step (3);

[0019] (5) The door frame is made of door frame panel, 3-12 mm thick medium density fiberboard or multi-layer plywood and 25-35 mm thick flame retardant pine wood filled with fireproof rock wool by cold pressing and bonding;

[0020] (6) PVC veneer technology is used to produce door frames and door frame stop strips with the same texture and color as the door leaf panel. The various components are spliced ​​together with the door leaf and door frame through hinges to form a wooden fireproof door filled with alumina fiber.

[0021] In a preferred disclosed example of the present invention, the panel described in step (1) is manufactured by covering the surface of a substrate with a colored surface decorative paper having an adhesive on the back, and sending the paper into a PVC flat laminating machine or a high-temperature blister machine or a hot press and heating the paper at 160 to 220°C so that the surface decorative paper covers the surface of the substrate to form a door panel, wherein the adhesive is a polyurethane hot melt adhesive, a polyvinyl acetate composite adhesive or a polyurethane hot melt adhesive.

[0022] Further, when a hot press is used, the pressure is 18 to 22 MPa;

[0023] Furthermore, the substrate is a medium density fiberboard with a thickness of 3 to 12 mm and a moisture content of 3% to 13%, or a multi-layer plywood with a thickness of 3 to 12 mm and a moisture content of 5% to 16%.

[0024] In a preferred disclosed example of the present invention, the adhesive described in step (1) is polyurethane composite glue (PUR), melamine resin glue or polyvinyl acetate composite glue; the colored surface decorative paper with wood texture is PVC decorative paper or melamine resin impregnated paper.

[0025] Alternatively, the surface of the medium-density fiberboard panel is covered with artificial imitation natural veneer with polyvinyl acetate composite adhesive on the back, and then covered on the surface of the substrate to obtain the panel.

[0026] In a preferred disclosed example of the present invention, in step (2), the method for making the main frame of the door leaf is to splice 20-40 mm thick laminated veneer lumber (LVL) or multi-layer plywood into a rectangular door leaf frame, place 6-10 20-40 mm thick glass magnesium board spacers in the length direction of the frame, and tightly bond them to the frame with polyvinyl acetate composite adhesive; then, glass magnesium board strips with a thickness of 3-8 mm are tightly bonded to three sides of the door leaf frame with polyvinyl acetate composite adhesive, except for one side sealed to the outside, to obtain the door leaf frame.

[0027] In the preferred disclosed example of the present invention, in step (2), the alumina fireproof filling core material is alumina fibers arranged in a felt-like form, and the contact between the alumina fibers and the door leaf frame is bonded with a fireproof sealant.

[0028] Furthermore, the alumina fiber is used as the fireproof core material for filling, and the alumina fiber is spread out at a density of 120 to 140 g / m 2 The arrangement density is evenly laid in the rectangle composed of the glass magnesium board spacers, filling 2 to 4 layers, and adhesive is used to bond the door frame and the alumina fiber. After filling, all layers of the alumina fiber are overlapped without gaps; the fireproof sealant is polyvinyl acetate, polyurethane hot melt adhesive or nitrile fireproof sealant.

[0029] In the preferred disclosed example of the present invention, in step (3), when PVC decorative paper or melamine impregnated paper is used, a cold press is used, and the cold press process parameters are 2.5-4.0 MPa and the time is 5-8 hours;

[0030] Alternatively, in step (3), the door leaf panel is cut into a size matching the frame, and polyvinyl acetate composite adhesive is evenly applied to one side of the panel not covered with decorative materials, and the panel is placed on both sides of the main frame. The panel is cold pressed into the main body of the fire door using a cold press, and the cold pressing process parameters are 2.5-4.0 MPa and the time is 5-8 hours. The press is then started to lower the upper platen to close and pressurize it. The main body of the door leaf is formed after cold pressing. After cutting, edge sealing and CNC milling by a CNC edge cleaning machine, the surface of the door leaf panel is sanded using a sanding machine, and local putty filling is performed to repair the flatness of the base layer; then, drying oil or clear oil is applied to the base layer, and all parts are evenly brushed without missing any parts; after the paint is dry, the first coat of putty is evenly applied to the surface; after the first coat of putty solidifies, it is polished with hand sandpaper, and then high-strength putty is applied; finally, a surface layer of paint is applied to the surface of the door leaf, and after the surface layer of paint is dry, the door leaf of the fire door is formed.

[0031] Alternatively, in step (3), the door leaf panel is cut into a size matching the frame, polyvinyl acetate composite adhesive is evenly applied to the non-textured surface of two panels covered with artificial imitation natural veneer, placed on both sides of the main frame, and cold pressed into the door leaf body by a cold press, the cold pressing process parameters are 2.5-4.0MPa, time 5-8h, then the press is started to make the upper platen descend, close and pressurize, and the door leaf body is formed after cold pressing. After cutting, edge sealing and CNC milling by CNC edge cleaning machine, the surface of the door leaf panel is sanded by a sanding machine, and local putty is embedded to repair the flatness of the base layer; then dry oil or clear oil is applied to the base layer, and all parts are evenly brushed. After the paint is dry, the first coat of putty is evenly applied on the surface; after the first coat of putty solidifies, it is polished with manual sandpaper, and then high-strength putty is applied; finally, the surface of the door leaf is painted, and after the surface paint is dried, the door leaf of the fireproof door is formed.

[0032] In a preferred disclosed example of the present invention, in step (5), the door frame is formed by cold-pressing and bonding a door frame panel with a 3-12 mm thick medium-density fiberboard or multi-layer plywood and a 25-35 mm thick flame-retardant pine wood-filled door frame fireproof core material.

[0033] Beneficial Effects

[0034] (1) Excellent fireproof performance. The production process adopts a one-time cold pressing process, and the surface material of the outer door leaf is completely seamless, which plays a great role in preventing the flame from entering the interior of the fire door, so that the middle core material can play a continuous insulation effect. The fireproof filling core material used in the sample has good flame retardant properties, which effectively prevents the high temperature flame from affecting the back fire surface. This plays a vital role in maintaining the fire resistance integrity and fire resistance insulation of the fire door.

[0035] (2) Low price and cost. Compared with traditional fireproof filling core materials, such as magnesium oxide perlite board, flame retardant perlite board, foam cement fireproof board, fire-resistant gypsum board and other non-combustible materials, alumina fiber has the advantages of easy preparation and low cost, which makes the present invention have greater process advantages and market advantages.

[0036] (3) Good structural performance. The present invention uses single-plate laminated wood or multi-layer plywood plus glass magnesium board to form the door leaf frame, and uses conventional methods to make the door leaf body. It has the advantages of simple manufacturing process and good impact resistance and other mechanical properties. The interior is filled with lightweight alumina fiber, which has good fire resistance and reduces the overall density of the door leaf, so that the present invention also has the advantages of light weight and high strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 . A schematic elevation diagram of the present invention;

[0038] Figure 2. Figure 1 The internal fill map of

[0039] Figure 3 . Figure 1 A-A sectional view;

[0040] Figure 4 . Schematic diagram of partial section of door frame;

[0041] Among them, the names of the components are respectively: 1. door frame; 2. door frame; 3. first panel; 4. door frame fireproof core material; 5. door leaf; 6. fireproof filling core material; 7. second panel; 8. glass magnesium board spacer; 8-1, glass magnesium board strip; 9. door leaf frame; 10. door frame panel; 11. flame retardant pine wood. DETAILED DESCRIPTION

[0042] In order to make the purpose and advantages of the present invention more concise and clear, the present invention will be illustrated by the following specific examples, but the present invention is by no means limited to these examples. The following examples are only preferred embodiments of the present invention and are only used to illustrate the present invention and cannot be understood as limiting the scope of the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the essence and principles of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be based on the attached claims.

[0043] Example 1

[0044] A wooden fireproof door filled with alumina fiber, comprising a fireproof door body, a door frame 2 is arranged around the fireproof door body, a door leaf 5 is installed inside the door frame, the door leaf 5 comprises a door leaf frame 9, a first panel 3, a second panel 7 and a fireproof filling core material 6, the first panel 3 and the second panel 7 are respectively arranged on the front and back sides of the door leaf 5; wherein, a plurality of glass magnesium board spacers 8 are arranged in parallel and uniformly along the length direction of the frame in the door leaf frame 9, a glass magnesium board strip 8-1 is attached to the inner side of the door leaf frame 9, the glass magnesium board spacers 8 and the glass magnesium board strips 8-1 arrange the interior of the door leaf frame 9 into a plurality of rectangles, and the fireproof filling core material 6 is alumina fiber filled in the rectangles.

[0045] Example 2

[0046] A wooden fireproof door filled with alumina fiber, comprising a fireproof door body, a door frame 2 is arranged around the periphery of the fireproof door body, a door leaf 5 is installed therein, the door leaf 5 comprises a door leaf frame 9, a first panel 3, a second panel 7 and a fireproof filling core material 6, the first panel 3 and the second panel 7 are respectively arranged on the front and back sides of the door leaf 5; wherein the door leaf frame 9 is spliced ​​into a rectangle by single-plate laminated lumber (LVL) or multi-layer plywood with a thickness of 20 to 40 mm, a plurality of glass magnesium board spacers 8 are arranged in parallel and uniformly along the length direction of the frame in the door leaf frame 9, a glass magnesium board strip 8-1 is attached to the inner side of the door leaf frame 9, the interior of the door leaf frame 9 is arranged into a plurality of rectangles by the glass magnesium board spacers 8 and the glass magnesium board strips 8-1, and the fireproof filling core material 6 is alumina fiber filled in the rectangle.

[0047] Example 3

[0048] A wooden fireproof door filled with alumina fiber, comprising a fireproof door body, a door frame 2 is arranged around the fireproof door body, a door leaf 5 is installed therein, the door leaf 5 comprises a door leaf frame 9, a first panel 3, a second panel 7 and a fireproof filling core material 6, the first panel 3 and the second panel 7 are respectively arranged on the front and back sides of the door leaf 5; wherein the door leaf frame 9 is spliced ​​into a rectangle by single-plate laminated lumber (LVL) or multi-layer plywood with a thickness of 20 to 40 mm, a plurality of glass magnesium board spacers 8 are arranged in parallel and uniformly along the length direction of the frame in the door leaf frame 9, a glass magnesium board strip 8-1 is attached to the inner side of the door leaf frame 9, the glass magnesium board spacer 8 has a thickness of 20 to 40 mm, and the number is 6 to 10; the thickness of the glass magnesium board strip 8-1 is 3 to 8 mm, the interior of the door leaf frame 9 is arranged into a plurality of rectangles by the glass magnesium board spacers 8 and the glass magnesium board strips 8-1, and the fireproof filling core material 6 is alumina fiber filled in the rectangle.

[0049] Example 4

[0050] A wooden fireproof door filled with alumina fiber, comprising a fireproof door body, a door frame 2 is arranged around the fireproof door body, a door leaf 5 is installed therein, the door leaf 5 comprises a door leaf frame 9, a first panel 3, a second panel 7 and a fireproof filling core material 6, the first panel 3 and the second panel 7 are respectively arranged on the front and back sides of the door leaf 5; wherein the door leaf frame 9 is spliced ​​into a rectangle by single-plate laminated lumber (LVL) or multi-layer plywood with a thickness of 20 to 40 mm, a plurality of glass magnesium board spacers 8 are arranged in parallel and uniformly along the length direction of the frame in the door leaf frame 9, a glass magnesium board strip 8-1 is attached to the inner side of the door leaf frame 9, the glass magnesium board spacer 8 has a thickness of 20 to 40 mm, and the number is 6 to 10; the thickness of the glass magnesium board strip 8-1 is 3 to 8 mm, the interior of the door leaf frame 9 is arranged into a plurality of rectangles by the glass magnesium board spacers 8 and the glass magnesium board strips 8-1, and the fireproof filling core material 6 is alumina fiber filled in the rectangle. The fireproof filling core material 6 is alumina fibers arranged in a felt shape, at a density of 120-140 g / m 2 The arrangement density is evenly spread between the glass magnesium board spacers 8, filling 2 to 4 layers.

[0051] Example 5

[0052] A wooden fireproof door filled with alumina fiber, comprising a fireproof door body, a door frame 2 is arranged around the fireproof door body, a door leaf 5 is installed therein, the door leaf 5 comprises a door leaf frame 9, a first panel 3, a second panel 7 and a fireproof filling core material 6, the first panel 3 and the second panel 7 are respectively arranged on the front and back sides of the door leaf 5; wherein the door leaf frame 9 is spliced ​​into a rectangle by single-plate laminated lumber (LVL) or multi-layer plywood with a thickness of 20 to 40 mm, a plurality of glass magnesium board spacers 8 are arranged in parallel and uniformly along the length direction of the frame in the door leaf frame 9, a glass magnesium board strip 8-1 is attached to the inner side of the door leaf frame 9, the glass magnesium board spacer 8 has a thickness of 20 to 40 mm, and the number is 6 to 10; the thickness of the glass magnesium board strip 8-1 is 3 to 8 mm, the interior of the door leaf frame 9 is arranged into a plurality of rectangles by the glass magnesium board spacers 8 and the glass magnesium board strips 8-1, and the fireproof filling core material 6 is alumina fiber filled in the rectangle. The fireproof filling core material 6 is alumina fibers arranged in a felt shape, at a density of 120-140 g / m 2 The density of arrangement is evenly laid between the glass magnesium board spacers 8, filling 2 to 4 layers. The surface of the door leaf 5 is also covered with a decorative film; one end face of the door leaf 5 is rotatably connected to the end face of the door frame through a fireproof hinge. The front and rear end faces of the door frame 2 are also provided with a door casing line 1, and the door frame 2 is filled with a door frame fireproof core material 4, which is fireproof rock wool.

[0053] Example 6

[0054] A method for manufacturing a wooden fireproof door filled with alumina fiber, comprising the following steps:

[0055] (1) The first panel and the second panel of the door leaf use artificial boards as the base material, and the base material is sanded twice with a sanding machine, the first time the board is coarsely sanded, and the second time the board is finely sanded to ensure that the surface of the two panels is smooth; the artificial board is 8mm

[0056] Thick, medium density fiberboard with a moisture content of 6%;

[0057] (2) Covering two panels with a colored artificial board surface decorative paper with a wood texture and an adhesive on the back, wherein the adhesive is a polyurethane composite adhesive (PUR), and the colored artificial board surface decorative paper with a wood texture is a PVC decorative paper; wherein the panel manufacturing method is: covering the surface of the medium-density fiberboard panel with a PVC decorative paper on the back coated with a polyurethane hot-melt adhesive and sending it into a PVC flat laminating machine for high-temperature heating at 180° C., so that the surface decorative paper covers the surface of the door leaf substrate to form a door leaf panel;

[0058] (3) The main frame of the door leaf is made of 25 mm thick laminated veneer lumber (LVL), with alumina fiber filling core material inside, and fireproof glass magnesium board arranged and bonded as required as core material filling. The main frame of the door leaf is made by: using 25 mm thick laminated veneer lumber (LVL) to splice into a rectangular door leaf frame, and using 8 25 mm thick glass magnesium board spacers to be placed at both ends of the frame in the length direction in a rectangular shape to form the door leaf frame;

[0059] (4) The alumina fibers are arranged in a felt-like form and then filled into the fire door frame. In order to ensure that the alumina fibers and the door leaf frame can be firmly bonded, polyvinyl acetate composite adhesive is used to bond the edges of the two. The filling method of the alumina fibers in the door leaf frame is as follows: the alumina fibers are spread out flat at a pressure of 133 g / m 2 The density of arrangement is evenly laid in the gap of glass magnesium board spacer, filling 2 layers, and polyvinyl acetate composite adhesive is used to bond the door frame and alumina fiber. After filling, all layers of alumina fiber overlap without gaps;

[0060] (5) Cut the door leaf panel into a size that matches the frame, apply polyvinyl acetate composite adhesive evenly on the non-textured surface of the two PVC decorative paper covering panels, place them on both sides of the main frame, and use a cold press to cold press the door leaf body of the fire door. The cold pressing process parameters are:

[0061] 4MPa, time 4h, then start the press to make the upper platen drop down, close and pressurize; after cold pressing, the main body of the door leaf is formed, and then the door leaf of the fire door is formed by cutting and edge sealing by CNC edge cleaning machine;

[0062] (6) The method for manufacturing the door frame panel of the fire door is the same as the method for manufacturing the door leaf panel in step (2);

[0063] (7) The door frame is formed by cold pressing and bonding 6 mm thick medium density fiberboard or multi-layer plywood and 30 mm thick flame retardant pine wood filled with fireproof rock wool. The main body of the door frame is made by cold pressing the door frame panel in step (6) with 6 mm medium density fiberboard and 30 mm thick flame retardant pine wood filled with fireproof rock wool;

[0064] (8) Use PVC veneer technology to make door frames and door frame blocks with the same texture and color as the fire door.

[0065] The components are assembled by splicing the components with the door leaf and the door frame through hinges.

[0066] Example 7

[0067] A method for manufacturing a wooden fireproof door filled with alumina fiber, comprising the following steps:

[0068] (1) The first panel and the second panel of the door leaf use artificial boards as the base material, and the base material is sanded twice with a sanding machine, the first time the board is coarsely sanded, and the second time the board is finely sanded to ensure that the surfaces of the two panels are smooth. The artificial boards are 10 mm thick medium-density fiberboard with a moisture content of 10%, and 10 mm thick multi-layer plywood with a moisture content of 10%;

[0069] (2) Covering two panels with a colored artificial board surface decorative paper with a wood texture and an adhesive on the back, wherein the adhesive is polyvinyl acetate composite adhesive, and the colored artificial board surface decorative paper with a wood texture is melamine resin impregnated paper; wherein the panel manufacturing method is: covering the surface of the multi-layer plywood panel with the decorative paper on the back coated with melamine resin composite adhesive and sending it into a hot press to be treated at 180°C and 18MPa for 10s, so that the surface decorative paper is covered on the surface of the door leaf substrate to form a door leaf panel;

[0070] (3) The main frame of the door leaf is made of 28 mm thick multi-layer plywood, and the interior is filled with alumina fiber core material, and the fireproof glass magnesium board is arranged and bonded as required as the core material filling. The manufacturing method of the main frame of the door leaf is: 28 mm thick multi-layer plywood is used to splice into a rectangular door leaf frame, and 10 28 mm thick glass magnesium board spacers are placed at both ends of the frame in the length direction to form a rectangular arrangement to form the door leaf frame;

[0071] (4) The alumina fibers are arranged in a felt-like form and then filled into the fire door frame. In order to ensure that the alumina fibers and the door leaf frame can be firmly bonded, the connection at the edge of the two is bonded with nitrile fireproof sealant; the filling method of the alumina fibers in the door leaf frame is as follows: the alumina fibers that have been spread out flat are placed at a pressure of 129g / m 2The density of arrangement is evenly laid in the gap of glass magnesium board spacer, filling 3 layers, and nitrile fireproof sealant is used to bond the door frame and alumina fiber. After filling, all layers of alumina fiber overlap without gaps;

[0072] (5) Cut the door leaf panel into a size that matches the frame, apply polyvinyl acetate composite adhesive evenly on the non-textured surface of two melamine impregnated paper panels, place them on both sides of the main frame, and use a cold press to cold press the door leaf body of the new wooden fireproof door. The cold pressing process parameters are pressure 3.5MPa, time 4.5h, and then start the press to lower the upper platen to close and pressurize. After cold pressing, the door leaf body is formed, and then the door leaf of the fireproof door is formed by cutting and edge sealing by a CNC edge cleaning machine;

[0073] (6) The method for making the door frame panel is the same as the method for making the door leaf panel in step (2);

[0074] (7) The door frame is formed by cold pressing and bonding 10 mm thick medium density fiberboard or multi-layer plywood and 28 mm thick flame retardant pine wood filled with fireproof rock wool; the main body of the door frame is made by cold pressing the door frame panel in step (6) with 10 mm multi-layer plywood and 28 mm thick flame retardant pine wood filled with fireproof rock wool;

[0075] (8) Use PVC veneer technology to make door frames and door frame blocks with the same texture and color as the fire door.

[0076] The components are assembled together with the door leaf and door frame through hinges.

[0077] Example 8

[0078] A method for manufacturing a wooden fireproof door filled with alumina fiber, comprising the following steps:

[0079] (1) The first panel and the second panel of the door leaf use artificial boards as the base material, and the base material is sanded twice with a sanding machine, the first time the board is coarsely sanded, and the second time the board is finely sanded to ensure that the surfaces of the two panels are smooth; the artificial boards are 10 mm thick medium-density fiberboard with a moisture content of 8%, and 12 mm thick multi-layer plywood with a moisture content of 8%;

[0080] (2) covering two panels with artificial imitation natural veneer with wood texture and adhesive on the back, wherein the adhesive is compounded with polyvinyl acetate;

[0081] (3) The main frame of the door leaf is made of 28 mm thick multi-layer plywood, and the interior is filled with alumina fiber core material, and the fireproof glass magnesium board is arranged and bonded as required as the core material filling; the manufacturing method of the main frame of the door leaf is: 28 mm thick multi-layer plywood is used to splice into a rectangular door leaf frame, and 10 28 mm thick glass magnesium board spacers are placed at both ends of the frame in the length direction to form a rectangular arrangement to form the door leaf frame;

[0082] (4) The alumina fibers are arranged in a felt-like form and then filled into the fire door frame. In order to ensure that the alumina fibers and the wood frame can be firmly bonded, the connection at the edge of the two is bonded with nitrile fireproof sealant; the filling method of the alumina fibers in the door leaf frame is as follows: the alumina fibers that have been spread out flat are placed at a pressure of 129g / m 2 The density of arrangement is evenly laid in the gap of glass magnesium board spacer, filling 3 layers, and nitrile fireproof sealant is used to bond the door frame and alumina fiber. After filling, all layers of alumina fiber overlap without gaps;

[0083] (5) Cut the door leaf panel into a size that matches the frame, apply polyvinyl acetate composite adhesive evenly on the non-textured surfaces of the two artificial imitation natural veneer panels, place them on both sides of the main frame, and use a cold press to cold press the door leaf body. The cold pressing process parameters are 2.5 to 4.0

[0084] MPa, time 5 to 8 hours, then start the press to make the upper platen drop down, close and pressurize, and form the main body of the door leaf after cold pressing. After cutting, edge sealing and CNC milling by CNC edge cleaning machine, use a sanding machine to sand the surface of the door leaf panel, and carry out local putty filling to repair the flatness of the base layer, and then apply drying oil or clear oil on the base layer, and brush all parts evenly;

[0085] After the paint dries, evenly apply the first coat of putty on the surface; after the first coat of putty solidifies, sand it with hand-made sandpaper, and then apply high-strength putty; finally, apply the surface paint on the surface of the door leaf, and after the surface paint dries, the door leaf of the fire door is formed;

[0086] (6) The method for making the door frame panel is the same as the method for making the door leaf panel in step (2);

[0087] (7) The door frame is made of 10 mm thick medium density fiberboard or multi-layer plywood and 28 mm thick flame retardant pine wood filled with fireproof rock wool and cold pressed and bonded. The main body of the door frame is made by adopting step (6)

[0088] The door frame panel is cold pressed with 10mm multi-layer plywood and 28mm thick flame-retardant pine wood filled with fireproof rock wool;

[0089] (8) Use PVC veneer technology to make door frames and door frame blocks with the same texture and color as the fire door.

[0090] The components are assembled together with the door leaf and door frame through hinges.

[0091] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the specification of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A wooden fireproof door filled with alumina fiber, comprising a fireproof door body, a door frame (2) is arranged around the fireproof door body, a door leaf (5) is installed inside the door frame, the door leaf (5) comprises a door leaf frame (9), a first panel (3), a second panel (7) and a fireproof filling core material (6), the first panel (3) and the second panel (7) are respectively arranged on the front and back sides of the door leaf (5); characterized in that: A plurality of glass magnesium board spacers (8) are arranged in parallel and evenly along the length direction of the frame in the door leaf frame (9); a glass magnesium board strip (8-1) is attached to the inner side of the door leaf frame (9); the glass magnesium board spacers (8) and the glass magnesium board strips (8-1) arrange the interior of the door leaf frame (9) into a plurality of rectangles; the fireproof filling core material (6) is alumina fiber, which is filled in the rectangles.

2. The wooden fireproof door filled with alumina fiber according to claim 1, characterized in that: The door leaf frame (9) is made of laminated veneer lumber or multiple layers of plywood with a thickness of 20 to 40 mm, spliced ​​into a rectangle.

3. The wooden fireproof door filled with alumina fiber according to claim 1, characterized in that: The glass magnesium board spacers (8) have a thickness of 20 to 40 mm and a number of 6 to 10 pieces; the glass magnesium board strips (8-1) have a thickness of 3 to 8 mm.

4. The wooden fireproof door filled with alumina fiber according to claim 1, characterized in that: The fireproof filling core material (6) is alumina fibers arranged in a felt shape at a density of 120 to 140 g / m 2 The arrangement density is evenly spread between the glass magnesium board spacers (8), filling 2 to 4 layers.

5. The wooden fireproof door filled with alumina fiber according to claim 1, characterized in that: The surface of the door leaf (5) is also affixed with a decorative film; one end face of the door leaf (5) is rotatably connected to one end face of the interior of the door frame via a fireproof hinge; door casing lines (1) are also provided on the front and rear end faces of the door frame (2); the interior of the door frame (2) is filled with a door frame fireproof core material (4), which is fireproof rock wool.

6. A method for manufacturing a wooden fire door filled with alumina fibers as claimed in any one of claims 1 to 5, characterized in that: The steps include: (1) The door panels are sanded twice with a sanding machine, and then with fine sand to ensure that the surfaces of the two panels are smooth. The colored decorative paper with wood texture and adhesive on the back is covered on the panel surface; (2) The main frame of the door leaf is made of 20-40 mm thick laminated veneer lumber (LVL) or multi-layer plywood. The interior is divided into parallel rectangles by glass magnesium board spacers. Alumina fiber is filled in the rectangles as a fireproof filling core material; (3) Cut the door leaf panel into a size that matches the main frame, apply polyvinyl acetate composite adhesive evenly on two pieces of PVC decorative paper or melamine impregnated paper to cover the non-textured surface of the panel, place it on both sides of the main frame, and use cold pressing or hot pressing technology to make the door leaf body. Then, it is cut by a CNC edge cleaning machine, edge-sealed and CNC milling to make the door leaf of the fire door; (4) The method for manufacturing the door frame panel is the same as the door leaf panel manufacturing process described in step (3); (5) The door frame is made of door frame panel, 3-12 mm thick medium density fiberboard or multi-layer plywood and 25-35 mm thick flame-retardant pine wood filled with fireproof rock wool by cold pressing and bonding; (6) PVC veneer technology is used to produce door casings and door frame stop strips with the same texture and color as the door leaf panel. The various components are spliced ​​together with the door leaf and door frame through hinges to form a wooden fire-resistant door filled with alumina fiber.

7. The method for manufacturing a wooden fireproof door filled with alumina fiber according to claim 6, characterized in that: The panel described in step (1) is manufactured by covering the surface of a substrate with a colored surface decorative paper having an adhesive on the back thereof, feeding the paper into a PVC flat laminating machine or a high-temperature blister machine or a hot press and subjecting the paper to a heating treatment at 160 to 220° C. so that the surface decorative paper covers the surface of the substrate to form a door panel, wherein the adhesive is a polyurethane hot melt adhesive, a polyvinyl acetate composite adhesive or a polyurethane hot melt adhesive.

8. The method for manufacturing a wooden fireproof door filled with alumina fiber according to claim 6, characterized in that: The adhesive described in step (1) is polyurethane composite glue (PUR), melamine resin glue or polyvinyl acetate composite glue; the colored surface decorative paper with wood texture is PVC decorative paper or melamine resin impregnated paper; or, the surface of the medium-density fiberboard panel is covered with artificial natural veneer with polyvinyl acetate composite glue on the back, and the panel is covered on the surface of the substrate to obtain the panel.

9. The method for manufacturing a wooden fireproof door filled with alumina fiber according to claim 6, characterized in that: In step (2), the method for manufacturing the main frame of the door leaf is to splice 20-40 mm thick laminated veneer lumber (LVL) or multi-layer plywood into a rectangular door leaf frame, place 6-10 20-40 mm thick glass magnesium board spacers in the length direction of the frame, and tightly bond them to the frame with polyvinyl acetate composite adhesive; then, tightly bond glass magnesium board strips with a thickness of 3-8 mm to three sides of the door leaf frame except for one side facing the outer edge with polyvinyl acetate composite adhesive, thereby obtaining the door leaf frame.

10. The method for manufacturing a wooden fireproof door filled with alumina fiber according to claim 6, characterized in that: In step (2), the alumina fireproof filling core material is alumina fibers arranged in a felt-like form, and the contact between the alumina fibers and the door leaf frame is bonded with a fireproof sealant.

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