CN111871740A - Improved coating material and coating process applied to wood board - Google Patents
Improved coating material and coating process applied to wood board Download PDFInfo
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- CN111871740A CN111871740A CN202010717538.XA CN202010717538A CN111871740A CN 111871740 A CN111871740 A CN 111871740A CN 202010717538 A CN202010717538 A CN 202010717538A CN 111871740 A CN111871740 A CN 111871740A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
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- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The improved coating material comprises a first coating material prepared by mixing wood powder, calcium carbonate powder, coating glue and water and a second coating material prepared by mixing the coating glue and the calcium carbonate powder; the coating process mainly comprises the following steps: one-time slurry mixing → one-time coating → first drying and curing → two-time slurry mixing → two-time coating → second drying and curing → surface sanding of the coating. The improved coating material is prepared by adopting the first coating material and the second coating material which are prepared by respective component proportions, the component proportions are simple and reasonable, and the prepared first coating material and second coating material have good quality. In the actual production process, the improved coating material is applied to the process of wood plates (such as fir), the quality of the plates subjected to coating treatment is good, the operation is fine, and the phenomena of coating falling, water softening, oil leakage, bubbling and the like can hardly occur.
Description
Technical Field
The invention relates to the field of solid wood board processing, in particular to an improved coating material and a coating process applied to a wood board.
Background
The solid wood board is a wood board made of wood (such as pine, fir, miscellaneous wood and other logs), is firm and durable, has natural grains, has the peculiar fragrance of natural wood, has better hygroscopicity and air permeability, is beneficial to human health, does not cause environmental pollution, and is a high-quality board for manufacturing high-grade furniture and house decoration.
The traditional solid wood board needs to be coated (namely, finished) in the processing process, and wood powder coating materials are generally adopted to finish (namely, coating treatment) the wood board once and then finish the wood board. For example, the patent name of the invention is disclosed in Chinese patent library: a processing method of a fir wood decoration and finishing material (patent application No. 200610135247.X, 2008, 6 months and 4 days) mainly comprises three steps of basic material making, coating treatment and surface processing, and is characterized in that: the coating material used in the coating treatment step consists of wood powder, calcium carbonate, amino resin adhesive, vinyl high polymer adhesive and polyurethane adhesive. The coating material prepared from the coating material components and the proportion has poor quality, a single-pass coating treatment mode is not ideal, and the quality of a coated plate is not ideal in the actual production process.
The existing solid wood board is coated (namely, finished) in the processing process, two finishing steps are generally adopted, a first coating material is composed of wood powder, calcium carbonate powder, epoxy resin glue, polyester glue, an emulsifier, a catalyst and boiled glue, and the first coating material is composed of the following components in parts by weight: 50 parts of wood powder, 25 parts of calcium carbonate powder, 50 parts of epoxy resin glue, 50 parts of polyester glue, 0.5 part of emulsifier, 0.5 part of catalyst and 16 parts of cooked glue. The second coating material is composed of white wood powder, calcium carbonate powder, epoxy resin glue and cooked glue, and the second coating material is composed of the following components in parts by weight: 50 parts of white wood powder, 50 parts of calcium carbonate powder, 50 parts of epoxy resin glue and 16 parts of cooked glue. Compared with the traditional coating process, the existing coating process has certain improvement on the processing quality of the solid wood board, but has some defects and is difficult to meet the requirement of high standard quality. The one-pass and two-pass coating materials prepared from the components and the proportion of the existing coating material have poor quality, more components, high cost, complex preparation process and complex operation, the sealing effect is not ideal, the soft corners of the coating glue are easy to be damaged, the coating is not uniform and easy to leak oil, wood flour (the mesh number of the wood flour is generally 200 meshes) has insufficient glue and water absorption, the bonding strength is not enough, a large amount of boiled glue is added to influence the wood flour to absorb the glue, the coating has poor adhesion, the coating is softened and easy to fall off, the surface bubbling rate of the coating is high, and no water is generated. The coating in the coating treatment can only be dried at low temperature (such as below 40 ℃) and has low production efficiency.
Disclosure of Invention
The invention provides an improved coating material and a coating process applied to a wood board, and aims to overcome the defects that the quality of the existing coating material is not good enough, the sealing effect is not good, the soft edge of a coating adhesive is easy to damage, the coating is not uniform and easy to leak oil, the adhesion force of the coating is poor, the bubbling rate of the surface of the coating is high and the like.
In order to solve the technical problems, the invention develops an improved coating material and a coating process applied to a wood board, and solves the problems that the existing coating material is not good enough in quality, has poor sealing effect and is easy to damage, the coating is not uniform and is easy to leak oil, the adhesion force is poor, the bubbling rate of the coating surface is high and the like in the actual production process. The technical scheme of the invention is as follows:
the improved coating material comprises a first coating material prepared by blending wood powder, calcium carbonate powder, coating glue and water and a second coating material prepared by blending the coating glue and the calcium carbonate powder, wherein the first coating material comprises the following components in parts by weight: 45-55 parts of wood powder, 45-55 parts of calcium carbonate powder, 130 parts of coating glue 125-one and 30-36 parts of water; the second coating material comprises the following components in parts by weight: 95-100 parts of coating glue and 325 parts of calcium carbonate powder.
The mesh number of the wood powder of the one-coating material is controlled to be 380-420 meshes, and the mesh number of the calcium carbonate powder of the one-coating material is controlled to be 350-450 meshes; the mesh number of the calcium carbonate powder in the two coating materials is controlled to be 580-620 meshes.
The improved coating material is applied to a coating process on a wood board, and comprises the following steps: 1) performing one-step coating, namely performing one-step coating operation on the plate blank by adopting one-step coating material, and controlling the coating thickness of the plate blank to be 0.3-0.5 mm; 2) drying and curing for the first time, drying the one-coating plate after the one-coating operation, wherein the drying temperature is controlled to be 55-70 ℃, and the water content of the one-coating plate is less than or equal to 15%; 3) Two coating operations are carried out on the first coating plate by adopting two coating materials, and the coating thickness of the first coating plate is controlled to be 0.25mm-0.5 mm; 4) drying and curing for the second time, drying the two coated plates after the two coating operations, wherein the drying temperature is controlled to be 55-70 ℃, and the water content of the two coated plates is less than or equal to 15%; 5) and sanding the surface of the coating, and sanding the surface of the second coated board to obtain a finished coated board.
Further, after the step 4), three coating and third drying curing are required, wherein the three coating modes are as follows: carrying out three coating operations on the two coating plates by adopting three coating materials, and controlling the coating thickness of the two coating plates to be 0.20-0.30 mm; the third drying and health preserving mode is as follows: and drying the three coated plates after the three coating operations, wherein the drying temperature is controlled to be 55-70 ℃, and the water content of the three coated plates is less than or equal to 15%.
Further, before the step 1), a stirring paddle is required to be carried out, 130 parts of 125-one coating glue is poured into stirring equipment, 45-55 parts of wood powder, 45-55 parts of calcium carbonate powder and 30-36 parts of water are added for mixing and stirring operation, a coating material is obtained after uniform stirring, and the coating material is barreled and sealed for later use; and 3) before the step 3), pouring 95-100 parts of coating glue into stirring equipment, adding 325 parts of 300-one calcium carbonate powder, mixing and stirring, obtaining two coating materials after uniform stirring, and barreling and sealing for later use.
Further, after the step 2), first picking is required, coating excess materials (such as wood glue powder) on the surface and the end of the coating plate are scraped off, and defective products (such as defects of cracking, foaming, wire drawing and the like) are sorted out and are subjected to stacking treatment; and 4) carrying out secondary picking after the step 4), sorting out defective products (such as cracks, bubbles, wire drawing and other defects) and carrying out stacking treatment to obtain a secondary coating plate.
Further, warehousing and stacking are needed after the step 5), finished coating plates are transferred to a warehouse and stacked, every two layers of finished coating plates are stacked orderly and separated by a filler strip, each filler strip is aligned up and down, order numbers, specifications, quantity and production date are marked, and coating sequence labels and time are marked.
Further, in the step 1), the first coating material is loaded into a feeding hopper of a first coating machine, then the first coating machine is started, and a coating operation is performed on the plate blank by the first coating machine; and 3) loading the two coating materials into a feeding hopper of a second coating machine, starting the second coating machine, and performing two coating operations on the one coating plate by the second coating machine.
From the above description of the present invention, it can be seen that the advantages of the present invention over the prior art are: the improved coating material is prepared by adopting the first coating material and the second coating material which are prepared by respective component proportions, the component proportions are simple and reasonable, and the prepared first coating material and second coating material have good quality. In the actual production process, the improved coating material is applied to the process of wood plates (such as fir), the plates subjected to coating treatment have good quality, fine operation and good sealing effect, soft edges and corners of coating glue are easy to damage, the coating is uniform and oil-tight, the bonding strength is good, the coating adhesion is strong, the coating is not easy to soften and fall off, and the bubbling rate of the coating surface is low. When the first drying and curing and the second drying and curing are carried out, the drying temperature can be directly increased by about 20 ℃, the drying speed of the plate can be increased by about 5 m/min, the drying production efficiency can be increased by about 20%, and the drying flow time can be shortened by about 64 hours. And the phenomena of coating falling, water softening, oil leakage, bubbling and the like hardly occur. The secondary coating material directly uses the thinner calcium carbonate powder to replace the white wood powder, so that the cost is greatly reduced and the coating quality is greatly improved.
Drawings
FIG. 1 is a graph showing the effect of a set of samples A prepared by the coating process.
Fig. 2 is an effect diagram of a group of samples C prepared by the existing coating process.
FIG. 3 is a graph showing the effect of the coating process on preparing another set of samples A.
Fig. 4 is a graph showing the effect of another group of samples C prepared by the prior art coating process.
Fig. 5 is a graph showing the effect of the first group sample B produced by the coating process.
Fig. 6 is a diagram illustrating the effect of the first group of samples D prepared by the prior art coating process.
Fig. 7 is a graph showing the effect of the second set of samples B produced by the coating process.
Fig. 8 is a diagram illustrating the effect of the second group of samples D prepared by the prior art coating process.
Fig. 9 is a graph showing the effect of the third group sample B produced by the coating process.
Fig. 10 is a graph showing the effect of the third group sample D prepared by the conventional coating process.
Detailed Description
Example one
The improved coating material comprises a first coating material prepared by blending wood powder, calcium carbonate powder, coating glue and water and a second coating material prepared by blending the coating glue and the calcium carbonate powder, wherein the first coating material comprises the following components in parts by weight: 50 parts of wood powder, 50 parts of calcium carbonate powder, 128 parts of coating glue and 35 parts of water; the second coating material comprises the following components in parts by weight: 98 parts of coating glue and 312 parts of calcium carbonate powder. The mesh number of the wood powder of the one-time coating material is controlled to be 400 meshes, and the mesh number of the calcium carbonate powder of the one-time coating material is controlled to be 360 meshes; the mesh number of the calcium carbonate powder in the second coating material is controlled to be 600 meshes. The coating glue is 307 waterproof coating glue (such as water-based acrylic polymer).
The improved coating material is applied to a coating process on a wood board, and the coating process comprises the following steps: one-time slurry mixing → one-time coating → first drying and curing → first picking → two-time slurry mixing → two-time coating → second drying and curing → second picking → coating surface sanding → warehousing and stacking. In particular, it comprises the following steps:
1) and (3) stirring the mixture by a paddle, pouring 128 kg of coating glue into stirring equipment, adding 50 kg of wood powder, 50 kg of calcium carbonate powder and 35 kg of water, mixing and stirring for 45 minutes generally, uniformly stirring to obtain a coating material, and barreling and sealing the coating material for later use.
2) Performing one-step coating, namely performing one-step coating operation on the plate blank by adopting one-step coating material, and controlling the coating thickness of the plate blank to be 0.3-0.5 mm (for example, the thickness is 0.4 mm); loading the primary coating material into a feeding hopper of a first coating machine, starting the first coating machine, and performing primary coating operation on the plate blank by the first coating machine; grinding the die of the first coating machine according to the size of the slab, so that the die opening is smooth, carefully installing the die position, keeping the planar coating thickness of the coating material distributed to the top surface, the left side surface and the right side surface of the slab as uniform as possible, and coating the bottom surface of the slab as less as possible (the coating thickness is controlled within 0.1mm generally).
3) And (3) drying and curing for the first time, drying the coated plate after the coating operation, wherein the drying temperature is controlled to be 55-70 ℃ (such as 65 ℃), the drying and curing time is controlled to be 4 hours, and the water content of the coated plate is less than or equal to 15%.
4) The first picking, scraping off the coating excess material (such as wood glue powder) higher than the board surface and the end head on the first coating board, and sorting out defective products (such as cracks, bubbles, wire drawing and other defects) for further stacking treatment.
5) And a second stirring paddle, pouring 98 kg of coating glue into stirring equipment, adding 312 kg of calcium carbonate powder, mixing and stirring for 45 minutes generally, uniformly stirring to obtain a second coating material, and barreling and sealing the second coating material for later use.
6) Two-pass coating, wherein two-pass coating operation is carried out on the one-pass coating plate by adopting two-pass coating materials, and the coating thickness of the one-pass coating plate is controlled to be 0.25mm-0.5mm (for example, the thickness is 0.3 mm); and (3) loading the two coating materials into a feeding hopper of a second coating machine, starting the second coating machine, and carrying out two coating operations on the one coating plate by the second coating machine. And grinding the die of the second coating machine according to the size of the first coating plate to ensure that the die opening is smooth, and carefully installing the die position to ensure that the size of the second coating plate meets the preset drawing requirement.
7) And (3) drying and curing for the second time, wherein the second coating plate after the second coating operation is dried, the drying temperature is controlled to be 55-70 ℃ (such as 60 ℃), the drying and curing time is controlled to be 4 hours, and the water content of the second coating plate is less than or equal to 15%.
8) And (4) secondary picking, sorting out defective products (such as cracks, bubbles, wire drawing and other defects) and stacking for additional treatment to obtain the two-pass coated board with smooth and flat surface.
9) And sanding the surface of the coating, and sanding the surface of the second coated board to obtain a finished coated board.
10) And warehousing and stacking, namely transferring the finished product coating plates to a warehouse for stacking, stacking every two layers of finished product coating plates regularly by using filler strips at intervals, aligning each filler strip up and down, marking order numbers, specifications, quantity and production date, and marking coating sequence labels and time.
Reference is made to the accompanying drawings 1-10 of the specification. The coating process and the existing coating process are used for test and detection report analysis, and mainly detect three indexes of coating adhesion detection, coating abrasion resistance detection and coating waterproof detection of a coated product. The specific operation steps are as follows: 1) collecting samples, namely taking a fir coating plate prepared by the coating process as a sample A, taking a finished fir coating plate prepared by the coating process as a sample B, wherein the length and width specifications of the sample A and the sample B are 15 multiplied by 68 sample sections, two sets of the samples A are reserved, and three sets of the samples B are reserved; taking a fir coating plate prepared by the existing coating process as a sample C, taking a finished fir coating plate prepared by the existing coating process as a sample D, wherein the length and width specifications of the sample C and the sample D are both 15 multiplied by 68 sample sections, two sets of samples C are reserved, and three sets of samples D are reserved.
2) And (4) finishing paint curing, namely respectively coating finishing paint on the two groups of samples A, the three groups of samples B, the two groups of samples C and the three groups of samples D for curing for later use.
3) Uniformly marking squares with certain specification and size on a group of samples A and a group of samples C by using a hundred-grid knife, and then placing the group of samples A and the group of samples C in a constant-temperature oven for drying and checking the effect, namely, the white-grid comparison effect can refer to the attached drawing 1 and the attached drawing 2 of the specification.
4) And (3) placing the other group of samples A and the other group of samples C in a constant-temperature water bath kettle at 70 ℃ for boiling for 3 hours, taking out the samples, placing the samples in a constant-temperature oven for drying, and checking the effect, namely the waterproof contrast effect can refer to the attached figures 3 and 4 of the specification.
5) Uniformly marking squares with certain specification and size on the first group of samples B and the first group of samples D by using a hundred-grid knife, and then placing the first group of samples B and the first group of samples D in a constant-temperature oven for drying and then checking the effect, namely the two-step white-grid comparison effect can refer to the attached figures 5 and 6 of the specification.
5) And respectively placing the second group of samples B and the second group of samples D on a working disc of a wear-resistant instrument for a wear-resistant experiment, and then placing the second group of samples B and the second group of samples D in a constant-temperature oven for drying and then checking the effect, namely referring to the attached figure 7 and figure 8 of the specification for the second wear-resistant comparison effect.
6) And (3) placing the third group of samples B and the third group of samples D in a constant-temperature water bath kettle at 70 ℃ for boiling for 3 hours, taking out the samples, placing the samples in a constant-temperature oven for drying, and checking the effect, namely the second waterproof contrast effect can refer to the attached figure 9 and the attached figure 10 of the specification.
The improved coating material and the existing coating material have the following quality parameter comparison table:
| quality item name | Improved coating material applied to wood board | The existing coating material is applied to the wood board |
| Strength and hardness of coating | The soft edge angle of the coating adhesive is easy to damage and is difficult to protect in the process | The coating has high strength and good hardness, is not easy to damage and generateThe production process is easy to protect |
| Degree of bubbling of coating | The bubbling rate of the coating surface reaches 20 percent | The bubbling rate of the coating surface is less than 2 percent |
| Adhesion of coatings | The falling rate of the coating is about 20 percent in the Baige test | The falling rate of the coating is less than 5 percent in the Baige test |
| Degree of coating peeling | The water-soaking shedding softening rate of the coating reaches about 10 percent | The water-soaking shedding softening rate of the coating is less than 1 percent |
| Oil leakage from the surface of the coating | The oil leakage rate of the coating reaches about 5 percent | The oil leakage rate of the coating is less than 0.03 percent |
| Surface smoothness of the coating | Sanding is carried out before the surface bubbling is roughly coated for two times | The surface of the coating is not sanded before being coated with two smooth coats |
Example two
The present embodiment is substantially the same as the first embodiment, except that: after the step 4), the one-coat paint consists of the following components in parts by weight: 45 parts of wood powder, 55 parts of calcium carbonate powder, 125 parts of coating glue and 36 parts of water; the second coating material comprises the following components in parts by weight: 95 parts of coating glue and 325 parts of calcium carbonate powder. The mesh number of the wood powder of the one-time coating material is controlled to be 380 meshes, and the mesh number of the calcium carbonate powder of the one-time coating material is controlled to be 450 meshes; the mesh number of the calcium carbonate powder in the secondary coating material is controlled to be 580 meshes.
The improved coating material also comprises three coating materials prepared by blending coating glue and calcium carbonate powder, wherein the three coating materials comprise the following components in parts by weight: 98-100 parts of coating glue and 315 parts of calcium carbonate powder, and the mesh number of the calcium carbonate powder in the three coating materials is controlled to be 650-700 meshes (the optimal mesh number is 680 meshes). The coating process comprises the following steps: one-time slurry mixing → one-time coating → first drying and curing → first picking → two-time slurry mixing → two-time coating → second drying and curing → second picking → three-time slurry mixing → three-time coating → third drying and curing → third picking → coating surface sanding → warehousing and stacking.
The improved coating material is applied to a coating process on a wood board, and comprises the following steps: three coating and third drying and curing are also needed, wherein the three coating modes are as follows: carrying out three coating operations on the two coating plates by adopting three coating materials, and controlling the coating thickness of the two coating plates to be 0.30 mm; the third drying and health preserving mode is as follows: and drying the three coated plates after the three coating operations, wherein the drying temperature is controlled at 70 ℃, and the water content of the three coated plates is less than or equal to 15%. The design of combining three coating processes with third drying and curing is adopted, so that the quality of the coated plate is further improved.
EXAMPLE III
The present embodiment is substantially the same as the first embodiment, except that: after the step 4), the one-coat paint consists of the following components in parts by weight: 55 parts of wood powder, 45 parts of calcium powder, 130 parts of coating glue and 30 parts of water; the second coating material comprises the following components in parts by weight: 100 parts of coating glue and 300 parts of calcium powder. The mesh number of the wood powder of the one-time coating material is controlled to be 420 meshes, and the mesh number of the calcium carbonate powder of the one-time coating material is controlled to be 350 meshes; the mesh number of the calcium carbonate powder in the second coating material is controlled to be 620 meshes.
The improved coating material also comprises three coating materials prepared by blending coating glue and calcium carbonate powder, and the mesh number of the calcium carbonate powder in the three coating materials is controlled to be 700 meshes. The coating process comprises the following steps: one-time slurry mixing → one-time coating → first drying and curing → first picking → two-time slurry mixing → two-time coating → second drying and curing → second picking → three-time slurry mixing → three-time coating → third drying and curing → third picking → coating surface sanding → surface processing → warehousing and stacking. And the surface processing is to carry out finish treatment on the surface of the finished coating plate.
The improved coating material is applied to a coating process on a wood board, and comprises the following steps: three coating and third drying and curing are also needed, wherein the three coating modes are as follows: carrying out three coating operations on the two coating plates by adopting three coating materials, and controlling the coating thickness of the two coating plates to be 0.20 mm; the third drying and health preserving mode is as follows: and drying the three coated plates after the three coating operations, wherein the drying temperature is controlled to be 55 ℃, and the water content of the three coated plates is less than or equal to 15%.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (8)
1. The improved coating material is characterized by comprising a first coating material prepared by blending wood powder, calcium powder, coating glue and water and a second coating material prepared by blending the coating glue and the calcium powder, wherein the first coating material comprises the following components in parts by weight: 45-55 parts of wood powder, 45-55 parts of calcium carbonate powder, 130 parts of coating glue 125-one and 30-36 parts of water; the second coating material comprises the following components in parts by weight: 95-100 parts of coating glue and 325 parts of calcium carbonate powder.
2. An improved coating charge as claimed in claim 1, characterized in that: the mesh number of the wood powder of the one-coating material is controlled to be 380-420 meshes, and the mesh number of the calcium carbonate powder of the one-coating material is controlled to be 350-450 meshes; the mesh number of the calcium carbonate powder in the two coating materials is controlled to be 580-620 meshes.
3. The coating process of the improved coating material applied to the wood board as claimed in claim 1 or 2, is characterized in that: it comprises the following steps: 1) performing one-step coating, namely performing one-step coating operation on the plate blank by adopting one-step coating material, wherein the coating thickness of the plate blank is controlled to be 0.3-0.5 mm; 2) drying and curing for the first time, drying the one-coating plate after the one-coating operation, wherein the drying temperature is controlled to be 55-70 ℃, and the water content of the one-coating plate is less than or equal to 15%; 3) Two coating operations are carried out on the first coating plate by adopting two coating materials, and the coating thickness of the first coating plate is controlled to be 0.25mm-0.5 mm; 4) drying and curing for the second time, drying the two coated plates after the two coating operations, wherein the drying temperature is controlled to be 55-70 ℃, and the water content of the two coated plates is less than or equal to 15%; 5) And sanding the surface of the coating, and sanding the surface of the second coated board to obtain a finished coated board.
4. The improved coating material as claimed in claim 3 is applied to a wood board, and is characterized in that: after the step 4), three coating and third drying and curing are required, wherein the three coating modes are as follows: carrying out three coating operations on the two coating plates by adopting three coating materials, and controlling the coating thickness of the two coating plates to be 0.20-0.30 mm; the third drying and health preserving mode is as follows: and drying the three coated plates after the three coating operations, wherein the drying temperature is controlled to be 55-70 ℃, and the water content of the three coated plates is less than or equal to 15%.
5. The improved coating material as claimed in claim 3 is applied to a wood board, and is characterized in that: before the step 1), a stirring paddle is required to be carried out, 130 parts of 125-plus coating glue is poured into stirring equipment, 45-55 parts of wood powder, 45-55 parts of calcium carbonate powder and 30-36 parts of water are added for mixing and stirring operation, a coating material is obtained after uniform stirring, and the coating material is barreled and sealed for later use; and 3) before the step 3), pouring 95-100 parts of coating glue into stirring equipment, adding 325 parts of 300-one calcium carbonate powder, mixing and stirring, obtaining two coating materials after uniform stirring, and barreling and sealing for later use.
6. The improved coating material as claimed in claim 3 is applied to a wood board, and is characterized in that: after the step 2), carrying out first picking, scraping off coating excess materials on a coating plate, which are higher than the plate surface and the end heads, and sorting out defective products for additional stacking treatment; and 4) carrying out secondary picking after the step 4), sorting out defective products and stacking the defective products to obtain a second coated board.
7. The improved coating material as claimed in claim 3 is applied to a wood board, and is characterized in that: and 5) warehousing and stacking are required after the step 5), finished product coating plates are transferred to a warehouse and stacked, every two layers of finished product coating plates are stacked orderly and separated by using cushion strips, each cushion strip is aligned up and down, order numbers, specifications, quantity and production date are marked, and coating sequence marks and time are marked.
8. The improved coating material as claimed in claim 3 is applied to a wood board, and is characterized in that: in the step 1), the primary coating material is loaded into a feeding hopper of a first coating machine, then the first coating machine is started, and primary coating operation is carried out on the plate blank by the first coating machine; and 3) loading the two coating materials into a feeding hopper of a second coating machine, starting the second coating machine, and performing two coating operations on the one coating plate by the second coating machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717538.XA CN111871740A (en) | 2020-07-23 | 2020-07-23 | Improved coating material and coating process applied to wood board |
Applications Claiming Priority (1)
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