CN107309978B - Kangnai board and manufacturing method thereof - Google Patents
Kangnai board and manufacturing method thereof Download PDFInfo
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- CN107309978B CN107309978B CN201710600602.4A CN201710600602A CN107309978B CN 107309978 B CN107309978 B CN 107309978B CN 201710600602 A CN201710600602 A CN 201710600602A CN 107309978 B CN107309978 B CN 107309978B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/042—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/072—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a kanghua board and a manufacturing method thereof. The kanghua board comprises a central base material layer and is characterized in that a balance layer, a buffer layer and a decoration layer are sequentially arranged outside the base material layer, the balance layer is homogeneous MDF or HDF, the buffer layer is impregnated ecological paper, and the environmental protection grade of each layer is E0 grade. The manufacturing method of the kangbai board comprises the following steps: the invention has the advantages that through the environmental protection control on the required raw materials, the formaldehyde emission reaches the E0 level, and meanwhile, the subsequent oil decoration process is not needed, the decoration cost is saved, and the pollution is reduced.
Description
Technical Field
The invention relates to a kang nai board and a manufacturing method thereof, belonging to the field of functional wood material processing.
Background
The plywood and the core of the joinery board are used as base materials, and are decorated by impregnated bond paper, so that the plywood and the core of the joinery board are commonly called as an ecological board, and have good mechanical properties, decorative properties and environmental protection properties, such as no paint, strong solid wood feeling, good nail holding power, convenience in sawing and cutting, and the like.
The ecological plate is a new indoor decoration plate, develops well in 2012, has a trend of unifying home decoration materials, becomes the most main material of indoor decoration, and accounts for about 70% of artificial plate surface decoration materials at present. Through the development of 7 years, the quality is steadily improved, and the product series is well developed. The environmental protection grade is developed from the initial E1 grade to the E0 grade, and functional ecological boards such as a formaldehyde purification function, an anion function and the like are developed at the same time, and the development of the color is rather than the best. Although the ecological plate is developed rapidly, the ecological plate has no formal national standard or industrial standard at present, and the market lacks supervision, so that the product quality is uneven.
Surface crack resistance refers to the ability of a product surface to retain its surface free of microcracks due to moisture, heat, and the like. The surface crack resistance is the measure of the adaptability of the ecological plate under the rapid changes of temperature, humidity and the like. The national climate difference is large, the southern climate is wet and warm, the northern climate is dry and cold, the climate difference and the use environment difference can influence the service life of the ecological plate, and the ecological plate used in the northern area has extremely high requirements on the surface crack resistance. Many ecological plates produced in the south have surface cracking phenomenon in the north, and the regional limitation is very large, thereby bringing certain difficulty to the popularization of the ecological plates. The cracking of the surface of the ecological plate is a quality problem mainly complained in the northern market at present and is a common problem in the ecological plate industry.
In order to solve the problem of regional use limitation of the ecological plate, the research and development of the anti-cracking ecological plate suitable for being used in the northern floor heating environment is urgent.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a kang-nai plate and a manufacturing method thereof, wherein the formaldehyde emission is less than or equal to 0.5mg/L, and simultaneously, the kang-nai plate is endowed with very high surface crack resistance, and the surface crack resistance reaches grade 5.
The technical scheme of the invention is as follows: the utility model provides a kang nai board, includes the substrate layer at center, its characterized in that the outside of substrate layer sets gradually balanced layer, buffer layer and decorative layer, balanced layer be homogeneity MDF or HDF, the buffer layer be the ecological paper of flooding, the environmental protection grade on each layer is E0 level.
Preferably, the balance layer has both internal and surface bonding strengths greater than 1.0MPaThe water absorption thickness expansion rate is controlled within 10 percent; the gram weight of the buffer layer is 100-180 g/m 2 The sizing amount is 120-180%, the pre-curing degree is 40-70%, the volatile component is 8-12%, and the thickness is 0.15-0.40 mm.
Preferably, the balance layer is HDF, the thickness is 1.0-3.0mm, MDI glue is adopted as glue of the balance layer, the formaldehyde emission is about 0.1mg/L, the internal bonding strength and the surface bonding strength are both more than or equal to 1.0MPa, and the water absorption thickness expansion rate is less than or equal to 10%.
Preferably, the buffer layer is impregnated kraft paper or balance paper, and the gram weight of the buffer layer is 100-180 g/m 2 The sizing amount is 120-180%, the thickness is 0.15-0.40mm, and the tensile strength is more than or equal to 50N/15 mm.
Preferably, the substrate layer is a plywood or a core board, the glue is soybean glue, and the water content of the substrate is controlled to be 8-10%.
Preferably, the decorative layer is impregnated film decorative paper, the gram weight of the impregnated film decorative paper is 60-120 g/m2, the gluing amount is 110-160%, the pre-curing degree is 30-70%, the volatile matter is 8-12%, and the thickness is 0.08-0.20 mm.
The manufacturing steps of the kangbai board are as follows:
manufacturing a substrate:
1) gluing and assembling: gluing the veneer or the core of the veneer, wherein the glue is soybean glue, and the glue amount is controlled to be 180-220g/m 2 Arranging the single plates or the plate cores according to a feeding standard, mainly sorting the single plates or the plate cores according to appearance grades, feeding materials meeting the standard, strictly controlling the water content, and assembling the single plates by gluing according to a design scheme;
2) cold pressing: cold pressing the assembled plate blank in a cold press for 30-120min under 0.6-1.0 MPa;
3) hot pressing: hot-pressing the cold-pressed plate blank at the temperature of 115 ℃ and 125 ℃ for 60-70s/mm and under the pressure of 0.6-1.0 MPa;
4) sanding, namely sanding the plate blank subjected to hot pressing in a fixed thickness with a sanding belt of 60-150 meshes;
5) scraping putty: filling and leveling the core-lacking part of the board surface by using putty;
6) cutting edges: cutting the plate blank into required specifications;
7) combining a base material with the balance layer, and preparing an ecological plate substrate through the working procedures of gluing, cold pressing, hot pressing, sanding, edge cutting and the like;
manufacturing a buffer layer:
8) glue mixing: adding 0.1-0.5% of curing agent, 0.1-0.2% of penetrating agent, 0.2-0.4% of plasticizer and 0.01-0.1% of release agent into dipping glue by weight ratio, fully stirring for 5-20 minutes to uniformly dissolve the mixture for later use.
9) Gum dipping: dipping kraft paper or balance paper at a speed of 20-40m/min and a dipping amount of 130- 2 ；
10) And (3) drying: drying the impregnated paper at 80-130 deg.C at a paper feed speed of 20-40m/min, with a pre-curing degree of 30-50% and volatile components of 8-12%;
11) cutting: cutting paper into required size according to customer requirement;
manufacturing surface layer decoration impregnated paper:
12) glue mixing: adding 0.5-3% by weight of Al into the dipping glue 2 O 3 0.1-0.3 percent of curing agent, 0.1-0.2 percent of penetrating agent, 0.2-0.5 percent of plasticizer and 0.1-0.3 percent of release agent, and fully stirring for 5-20 minutes to uniformly dissolve the mixture for later use.
13) Gum dipping: dipping kraft paper or balance paper with the speed controlled at 20-40m/min and the dipping amount at 110- 2 ；
14) And (3) drying: drying the impregnated paper at 80-130 deg.C at a paper feed speed of 20-40m/min, with a pre-curing degree of 30-70% and volatile components of 8-12%;
15) cutting: and cutting the paper into required sizes according to the requirements of customers.
Manufacturing of kang nai board
16) And compounding the substrate with the buffer layer and the decorative layer, and performing hot pressing and trimming to obtain the Kangnai plate.
Preferably, the cold press needs to be used for cold pressing within 30min after the slab assembly in the step 2) is finished, and the intra-plate thickness deviation of the base material after the thickness setting and sanding in the step 4) is within 0.2 mm.
Preferably, the deviation of the thickness in the substrate after sanding in the step 7) is within 0.15mm, the sanding belt is 180-300 meshes, the release agent layer on the surface layer needs to be sanded up, and the substrate needs to be cured for 7-15 days after sanding, so that the uniform water content in the substrate is ensured, and the water content is controlled to be 6-10%.
Preferably, the amino resin in the step 8) and the step 12) is melamine formaldehyde resin or melamine modified urea formaldehyde resin, the hot pressing temperature in the step 16) is 120-125 ℃, the pressure is 0.7-1.0MPa, and the time is 10 min/surface, and after the step 16) is pressed, the steps of 17) edge alignment, 18) and the like are included for packaging.
In conclusion, the invention has the following beneficial effects:
1. the invention is a green and healthy product by controlling the environmental protection of the required raw materials, the formaldehyde emission reaches E0 level, and meanwhile, the subsequent oil decoration process is not needed, the decoration cost is saved, and the pollution is reduced.
2. Through the adjustment to the structure, increased the homogeneity balanced layer, improved the roughness and the structural stability of face.
3. The veneer connected with the decorative layer is changed into kraft paper or balance paper, so that the transverse tensile strength of the board is improved, the surface cracking resistance of the ecological board is finally improved, and the problem of bottom penetration of the board surface is solved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and the specific working process, but the present invention is not limited thereto.
As shown in fig. 1, the kannai board of the present invention comprises a substrate layer 1 at the center, and a balance layer 2, a buffer layer 3 and a decoration layer 4 are sequentially disposed outside the substrate layer, wherein the balance layer is homogeneous MDF or HDF, the buffer layer is impregnated ecological paper, and the environmental protection grade of each layer is E0 grade.
The following describes the manufacturing process of two different specifications of kanghua boards of the invention:
EXAMPLE one (17.5mm plywood core kangbai board)
Firstly, substrate preparation (15mm plywood substrate):
1. gluing and assembling: 5 pieces of eucalyptus short-core veneers with the thickness of 1.8mm are glued, and the glue is soybean glue. Glue measuring position 200g/m 2 The single plates are sorted according to the feeding standard, mainly sorted according to the appearance grade, and the moisture content is strictly controlled when the feeding meets the standard. Assembling 5 layers of coated short cores and 4 layers of uncoated long cores according to a design scheme, and criss-cross;
2. cold pressing: cold pressing the assembled plate blank in a cold press for 90min at the pressure of 1.0 MPa;
3. hot pressing: and (3) hot-pressing the cold-pressed plate blank at the temperature of 120 ℃ for 18min under the pressure of 1.0MPa, wherein the water content of the hot-pressed plate blank is controlled within 12%.
4. Sanding, namely sanding the hot-pressed plate blank with a fixed thickness of 15mm, wherein the sanding belt is 150 meshes.
5. Scraping grease: filling and leveling the core-lacking part of the board surface by using putty;
6. cutting edges: and (4) cutting the edges of the sanded plate blank, wherein the specification is 1240 x 2460 mm.
7. 1.0mm HDF is compounded on each of the upper and lower sides of a 15mm plywood substrate, and the 17mm ecological board substrate with the sandwich structure is manufactured through the processes of gluing, cold pressing, hot pressing, polishing and edge cutting, wherein an abrasive belt adopted for polishing is 240 meshes, and the specification after edge cutting is 1220 x 2440 mm;
secondly, manufacturing a buffer layer:
8. glue mixing: adding 0.1-0.5% of curing agent, 0.1-0.2% of penetrating agent, 0.2-0.4% of plasticizer and 0.01-0.1% of release agent into the soaking glue by weight ratio, and fully stirring for 5-20 minutes to uniformly dissolve the mixture for later use.
9. Gum dipping: gumming kraft paper at a speed of 40m/min and a gum dipping amount of 170g/m 2 。
10. And (3) drying: drying the impregnated paper at 120 deg.C, paper feeding speed of 40m/min, pre-curing degree of 48%, and volatile component of 11%.
11. Cutting: and cutting the paper into 1260 × 2480mm according to the requirements of customers.
Thirdly, manufacturing surface layer decorative impregnated paper:
12. glue mixing: adding 0.3-2% by weight of Al into the dipping glue 2 O 3 0.1 to 0.3 percent of curing agent, 0.1 to 0.2 percent of penetrating agent, 0.2 to 0.5 percent of plasticizer and 0.1 to 0.3 percent of release agent, and fully stirring for 5 to 20 minutes to uniformly dissolve the mixture for later use.
13. Gum dipping: gumming kraft paper or balance paper at a speed of 35m/min and a gum dipping amount of 130g/m 2 。
14. And (3) drying: drying the impregnated paper at 110 deg.C with a paper feed speed of 35m/min, a pre-curing degree of 52%, and a volatile content of 9.5%.
15. Cutting: and cutting the paper into required 1260 × 2480mm according to the requirements of customers.
Manufacturing method of four-and 17.5-mm plywood core kanghui board
16. And compounding the 17mm substrate with 0.2mm impregnated kraft paper and 0.08mm impregnated decorative paper, and carrying out hot pressing and edging to obtain the Kangnai board. The hot pressing comprises the following three elements: the temperature is 123 ℃, the unit pressure is 0.8MPa, and the time is 10min.
EXAMPLE two (17.5mm joinery board core kangbai board)
One substrate fabrication (17mm joinery board substrate):
1. gluing and assembling: gluing 12mm laminated wood, wherein the glue is soybean glue. Glue measuring position 220g/m 2 Respectively pasting a layer of 2.0mm poplar short core on the upper part and the lower part of the laminated wood according to a design scheme;
2. cold pressing: cold pressing the assembled plate blank in a cold press for 90min at the pressure of 0.8 MPa;
3. hot pressing: and (3) hot-pressing the cold-pressed plate blank at the temperature of 120 ℃, the time of 500S and the pressure of 0.8MPa, wherein the water content of the hot-pressed plate blank is controlled within 10 percent.
4. Sanding, namely sanding the plate blank subjected to hot pressing to a fixed thickness of 15mm, wherein the sanding belt is a combined sanding belt of 60 meshes and 150 meshes.
5. Scraping grease: filling and leveling the core-lacking part of the board surface by using putty;
6. cutting edges: and (4) cutting the edges of the sanded plate blank, wherein the specification is 1240 x 2460 mm.
7. 1.0mm HDF is compounded on each of the upper and lower sides of a 15mm plywood substrate, and the 17mm ecological board substrate with the sandwich structure is manufactured through the processes of gluing, cold pressing, hot pressing, polishing and edge cutting, wherein an abrasive belt adopted for polishing is 240 meshes, and the specification after edge cutting is 1220 x 2440 mm;
secondly, manufacturing a buffer layer:
8. glue mixing: 0.1 percent of curing agent, 0.2 percent of penetrating agent, 0.05 percent of brightening agent and 0.03 percent of release agent are added into the dipping glue by weight ratio, and the mixture is fully stirred for 10 minutes to be uniformly dissolved for standby.
9. Gum dipping: gumming kraft paper at a speed of 40m/min and a gum dipping amount of 170g/m 2 。
10. And (3) drying: drying the impregnated paper at 120 deg.C, paper feeding speed of 40m/min, pre-curing degree of 48%, and volatile component of 11%.
11. Cutting: and cutting the paper into 1260 × 2480mm according to the requirements of customers.
Thirdly, manufacturing surface layer decorative impregnated paper:
12. glue mixing: 0.3 percent of Al is added into the dipping glue by weight 2 O 3 0.2 percent of curing agent, 0.2 percent of penetrating agent, 0.3 percent of plasticizer and 0.2 percent of release agent, and fully stirring for 15 minutes to uniformly dissolve the mixture for later use.
13. Gum dipping: gumming kraft paper or balance paper at 35m/min with gum dipping amount of 130g/m 2 。
14. And (3) drying: drying the impregnated paper, wherein the temperature is 110 ℃, the paper feeding speed is 35m/min, the pre-curing degree is controlled to be 52 percent, and the volatile matter is 9.5 percent.
15. Cutting: and cutting the paper into required 1260 × 2480mm according to the requirements of customers.
Manufacturing method of four-and 17.5-mm joinery board core
16. And compounding the 17mm substrate with 0.2mm impregnated kraft paper and 0.08mm impregnated decorative paper, and carrying out hot pressing and edging to obtain the Kangnai board. The hot pressing comprises the following three elements: the temperature is 123 ℃, the unit pressure is 0.8MPa, and the time is 10min.
Claims (9)
1. The manufacturing method of the kanghui board is characterized by comprising the following steps:
manufacturing a substrate:
1) gluing and assembling: gluing the veneer or the core of the veneer, wherein the glue is soybean glue, and the glue amount is controlled to be 180-flour glue at 220g/m 2 Arranging the single plates or the plate cores according to a feeding standard, mainly sorting the single plates or the plate cores according to appearance grades, strictly controlling the water content of the fed materials meeting the standard, and assembling the single plates by gluing according to a design scheme;
2) cold pressing: cold pressing the assembled plate blank in a cold press for 30-120min at 0.6-1.0 MPa;
3) hot pressing: hot-pressing the cold-pressed plate blank at the temperature of 115 ℃ and 125 ℃ for 60s/mm and under the pressure of 0.6-1.0 MPa;
4) sanding: sanding the plate blank after hot pressing to a fixed thickness, wherein the abrasive belt is 60-150 meshes;
5) scraping grease: filling and leveling the core-lacking part of the board surface by using putty;
6) cutting edges: cutting the plate blank into required specifications to prepare a base material layer;
7) combining the substrate layer with the balance layer, and preparing the ecological plate substrate through the processes of gluing, cold pressing, hot pressing, sanding and edge cutting;
manufacturing a buffer layer:
8) glue mixing: adding 0.1-0.5% of curing agent, 0.1-0.2% of penetrating agent, 0.2-0.4% of plasticizer and 0.01-0.1% of release agent into dipping glue by weight ratio, fully stirring for 5-20 minutes to uniformly dissolve the mixture for later use;
9) gum dipping: gumming kraft paper or balance paper, controlling the speed at 20-40m/min and the gum dipping amount at 130-180g/m 2 ；
10) And (3) drying: drying the impregnated paper at 80-130 deg.C at a paper feed speed of 20-40m/min, with a pre-curing degree of 30-50% and volatile components of 8-12%;
11) cutting: cutting paper into required size according to customer requirement;
manufacturing surface layer decoration impregnated paper:
12) glue mixing: adding 0.5-3% by weight of Al into the dipping glue 2 O 3 0.1-0.3 percent of curing agent, 0.1-0.2 percent of penetrating agent, 0.2-0.5 percent of plasticizer and 0.1-0.3 percent of release agent, and fully stirring for 5-20 minutes to uniformly dissolve the mixture for later use;
13) gum dipping: gumming kraft paper or balance paper, controlling the speed at 20-40m/min and the gum dipping amount at 110-140g/m 2 ；
14) And (3) drying: drying the impregnated paper at 80-130 deg.C at a paper feed speed of 20-40m/min, with a pre-curing degree of 30-70% and volatile components of 8-12%;
15) cutting: cutting paper into required size according to customer requirement;
making of kangling board
16) And compounding the substrate with the buffer layer and the decorative layer, and performing hot pressing and trimming to obtain the refractory plate.
2. The method for manufacturing a kang nai board according to claim 1, characterized in that step 2) needs to enter a cold press for cold pressing within 30min after the assembly of the board blank, and step 4) the deviation of the thickness of the base material after the thickness setting and sanding is within 0.2 mm.
3. The method as claimed in claim 1, wherein the deviation of the thickness of the sanded substrate in step 7) is within 0.15mm, the sanding belt is 180-300 mesh, the surface layer of the release agent needs to be sanded completely, and the substrate needs to be cured for 7-15 days after being sanded, so as to ensure uniform water content in the substrate and control the water content to be 6-10%.
4. The method for manufacturing a kannai board according to claim 1, characterized in that the amino resin in the steps 8) and 12) is melamine formaldehyde resin and melamine modified urea formaldehyde resin, the hot pressing temperature in the step 16) is 120-.
5. A kanghua board manufactured by the method according to any one of claims 1 to 4, which comprises a central substrate layer and is characterized in that a balance layer, a buffer layer and a decoration layer are sequentially arranged outside the substrate layer, the balance layer is made of homogeneous MDF or HDF, the buffer layer is impregnated ecological paper, and the environmental protection grade of each layer is E0 grade;
the internal bonding strength and the surface bonding strength of the balance layer are both required to be more than 1.0MPa, and the water absorption thickness expansion rate is controlled within 10%; the gram weight of the buffer layer is 100-180 g/m 2 The sizing amount is 120-180%, the pre-curing degree is 40-70%, the volatile component is 8-12%, and the thickness is 0.15-0.40 mm.
6. The kang nai board of claim 5, characterized in that the balance layer is HDF, the thickness is 1.0-3.0mm, the glue of the balance layer is MDI glue, the formaldehyde emission is about 0.1mg/L, the internal bonding strength and the surface bonding strength are both more than or equal to 1.0MPa, and the water absorption thickness expansion rate is less than or equal to 10%.
7. A kannai board according to claim 5, characterized in that the buffer layer is impregnated kraft paper or balance paper with a gram weight of 100-180 g/m 2 The sizing amount is 120-180%, the thickness is 0.15-0.40mm, and the tensile strength is more than or equal to 50N/15 mm.
8. The kannai board of claim 5, characterized in that the substrate layer is plywood or core board, the glue is soybean glue, the water content of the substrate is controlled at 8-10%.
9. The kang nai board of claim 5, characterized in that the decorative layer is an impregnated film decorative paper with a gram weight of 60-120 g/m 2 The sizing amount is 110-160%, the pre-curing degree is 30-70%, the volatile matter is 8-12%, and the thickness is 0.08-0.20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710600602.4A CN107309978B (en) | 2017-07-21 | 2017-07-21 | Kangnai board and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710600602.4A CN107309978B (en) | 2017-07-21 | 2017-07-21 | Kangnai board and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107309978A CN107309978A (en) | 2017-11-03 |
| CN107309978B true CN107309978B (en) | 2022-09-27 |
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| CN109203121A (en) * | 2018-09-18 | 2019-01-15 | 德华兔宝宝装饰新材股份有限公司 | A kind of environment-friendlyhousehold household plate and its manufacturing method |
| CN109054707A (en) * | 2018-09-18 | 2018-12-21 | 德华兔宝宝装饰新材股份有限公司 | A kind of environmentally-friendly decorative paper glue composition |
| CN109015949A (en) * | 2018-09-18 | 2018-12-18 | 德华兔宝宝装饰新材股份有限公司 | A kind of environmental protection substrate and its manufacturing method |
| CN112936467A (en) * | 2021-03-11 | 2021-06-11 | 德华兔宝宝装饰新材股份有限公司 | Cabinet door plate and preparation method thereof |
| CN113021537A (en) * | 2021-03-23 | 2021-06-25 | 南京林业大学 | Production process of wood-based paper plywood |
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