CN111842081A - Vacuum spraying method for UV finish paint of wooden products and UV finish paint vacuum painted wooden products - Google Patents

Vacuum spraying method for UV finish paint of wooden products and UV finish paint vacuum painted wooden products Download PDF

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CN111842081A
CN111842081A CN202010808696.6A CN202010808696A CN111842081A CN 111842081 A CN111842081 A CN 111842081A CN 202010808696 A CN202010808696 A CN 202010808696A CN 111842081 A CN111842081 A CN 111842081A
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vacuum
finish
dry
wood product
product
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冯毅
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Henan Hengda Oupai Door Industry Co ltd
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Henan Hengda Oupai Door Industry Co ltd
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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
    • B05D7/08—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 using synthetic lacquers or varnishes
    • 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
    • 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
    • B05D3/06—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 exposure to radiation
    • B05D3/061—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 exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • 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
    • B05D3/12—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 mechanical means
    • 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
    • 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
    • B05D7/546—No clear coat specified each layer being cured, at least partially, separately
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C09D163/10—Epoxy resins modified by unsaturated compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • 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
    • B05D2320/00—Organic additives
    • 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
    • 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
    • B05D2503/00—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention provides a vacuum spraying method of UV finish paint of a wooden product and the UV finish paint vacuum sprayed wooden product, wherein the vacuum spraying method of the UV finish paint of the wooden product comprises the following steps: sanding and polishing a primer wooden product to be treated to obtain a pretreated wooden product; carrying out at least one multi-ester compound UV finish vacuum spraying, leveling, ultraviolet light curing and drying treatment on the pretreated wood product to obtain a UV finish wood product; the invention adopts an automatic production line to continuously produce the line, the wooden product can be finished and the finish paint can be finished on the production line at one time, the production line speed is more than 30-40m/min, the paint is 100 percent utilized, no paint mist is generated in the production process, no harm is caused to the environment and operators, no paint spraying room and drying room are needed, the obtained UV finish paint wooden product has good flatness, meets the requirements, and the product has smooth and clean surface, full paint film, high surface hardness (more than H level) and high adhesive force, and has simple production process, short production time, high production efficiency, high finished product rate of products and low material and energy consumption, thereby being suitable for large-batch industrial production.

Description

Vacuum spraying method for UV finish paint of wooden products and UV finish paint vacuum painted wooden products
Technical Field
The invention relates to the technical field of paint spraying, in particular to a vacuum spraying method of UV finish paint of a wooden product and a UV finish paint vacuum painted wooden product.
Background
The spraying of woodwork finish coat is the indispensable one step in the woodwork finished product paint spraying process, directly influences woodwork surface quality.
In the existing paint spraying process, paint and finish are coated in a spraying mode, and the flatness and the smoothness of the surface of a wooden product can be ensured only by spraying the wooden product by a finish coating process at least twice. Firstly, sanding and polishing a primer wooden product to be treated to obtain the primer polished wooden product. And (3) performing first color correction or first finish paint spraying on the pretreated wood product (according to the product process requirement), enabling the sprayed wood product to enter a drying area for leveling and full drying treatment (about 6 hours), and sanding and polishing the dried wood product to obtain the first finish paint wood product. And (3) performing secondary spraying on the treated primary finish wood product by adopting the same finish coating, leveling and drying processes to obtain a secondary finish wood product (finished product).
The finishing paint woodwork coating needs to be subjected to line inserting, leveling, full drying, sanding and dust removal treatment before being sprayed every time in the process of spraying the finishing paint woodwork coating, and the next spraying link can be entered only by the processes of line inserting, leveling, full drying and sand light dust removal after being sprayed every time, so that energy, time and coating materials are wasted, the production process is complex, the yield is low, the loss is large (the paint utilization rate is 40-50%), the time consumption is long, the efficiency is low, the paint mist pollutes the environment in the production process, and the paint mist harms the bodies of operators. The surface smoothness and paint saturation of the wooden products are poor, the patterns and colors are easy to appear, and the requirements of the existing spraying process cannot be met.
The existing UV finish paint spraying technology in the industry is still in the research, development and trial-manufacture stage, and is produced by single machine operation, the equipment speed is low (within 18 m/min), and a high-speed UV finish paint coating technology and a continuous production line are not available.
Disclosure of Invention
In order to solve the problems, the invention provides a vacuum spraying method of a UV finishing coat of a wooden product and the UV finishing coat vacuum painted wooden product.
The technical scheme adopted by the invention is as follows:
a vacuum spraying method for UV finish paint of wood products specifically comprises the following steps:
sanding and polishing a primer wooden product to be treated to obtain a pretreated wooden product;
and carrying out at least one multi-ester compound UV finish vacuum spraying, leveling, ultraviolet light curing and drying treatment on the pretreated wood product to obtain the UV finish wood product.
The polyester compound UV finish paint is prepared by compounding urethane acrylate, epoxy acrylate, a filler, a UV monomer, a photoinitiator and a binder;
the ester compound in the multi-ester compound UV finishing paint is polyurethane acrylate and epoxy acrylate, and the photoinitiator is any one of 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2-dimethylamino-2-benzyl-1- [4- (4-morpholinyl) phenyl ] -1-butanone or alpha-hydroxyalkyl phenyl ketone; the binder is vinyl acetate emulsion or acrylic emulsion; the polyester compound UV finishing paint comprises the following components in percentage by weight: 5-15% of polyurethane acrylate, 20-30% of epoxy acrylate, 2-5% of photoinitiator, 0.1-1% of binder, 2-10% of filler and the balance of UV monomer.
The method comprises the following steps of carrying out at least one multi-ester compound UV finish vacuum spraying, leveling and ultraviolet light curing treatment on the pretreated wood product to obtain the UV finish wood product:
carrying out primary vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the pretreated wood product, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint at 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the pretreated wood product, performing primary vacuum spraying, leveling, and performing ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
carrying out first vacuum spraying on the pretreated wood product by adopting a UV color modifier (adding a certain proportion of oily color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a first semi-dry vacuum color-modified wood product; performing secondary vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum color-modified wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
carrying out first vacuum spraying on the pretreated wood product by adopting a UV color modifier (adding a certain proportion of oily color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a first semi-dry vacuum color-modified wood product; adding a certain proportion of UV mixed colored finish paint with oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first semi-dry vacuum color-modified wood product for secondary vacuum spraying, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
performing first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the preprocessed wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a first half-dry vacuum finish wood product; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum finish wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum finish paint-sprayed wood product;
performing first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the preprocessed wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a first half-dry vacuum finish wood product; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first semi-dry vacuum finish wood product and a UV mixed colored finish with a certain proportion of oily color concentrates (according to product color blending, weight ratio: 100: 0.5-5), and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum finish paint spraying wood product;
carrying out first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method on the preprocessed wood products and adding a certain proportion of UV mixed colored finish (according to product color, the weight ratio is 100: 0.5-5) of oily color concentrates, and carrying out leveling, ultraviolet light curing and drying treatment to obtain first half-dry vacuum colored finish wood products; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum colored finish wood product, and performing leveling and ultraviolet light curing drying treatment to obtain a full-dry vacuum finish paint-sprayed wood product;
polyester compound UV finishing coat with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method of the preprocessed wood product is added with UV mixed colored finishing coat with certain proportion of oily color concentrates (the weight ratio is 100:0.5-5 according to product color), first vacuum spraying is carried out, leveling and ultraviolet light curing and drying treatment are carried out, and a first half-dry vacuum colored finishing coat wood product is obtained; and (3) adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first half-dry vacuum colored finish paint wood product, performing secondary vacuum spraying, leveling, ultraviolet light curing and drying to obtain the full-dry vacuum finish paint spray paint wood product.
The method comprises the following steps of pretreating a wood product of primer to be treated to obtain the pretreated wood product of primer:
sanding and polishing the primer wooden product to be treated to obtain a polished wooden product;
and performing soot blowing and dust absorption treatment on the sanded and polished wood products to obtain dust-removed wood products, namely the pretreated wood products.
The polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is subjected to primary vacuum spraying, leveling and ultraviolet light curing drying treatment are carried out to obtain a first full-dry vacuum finish paint wood product, and the full-dry curing ultraviolet light curing drying energy in the ultraviolet light curing full-drying treatment process is 300-400mj/cm2。
The pretreated wood product is subjected to primary vacuum spraying by adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and then leveling, ultraviolet light curing and drying treatment are carried out to obtain a full-dry vacuum spray-painted wood product; the total dry curing and drying energy gallium lamp and mercury lamp combined total dry energy in the ultraviolet light curing and total drying treatment process is 300-2。
The polyester compound UV color modifier with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method (a certain proportion of oil color concentrate is added according to the product color, the weight ratio is 100: 0.5-5) is subjected to first vacuum spraying, leveling and ultraviolet light curing and drying treatment are carried out, a first semi-dry vacuum color-modified wood product is obtained, and the semi-dry energy of the combination of the ultraviolet semi-dry curing and drying energy gallium lamp and the mercury lamp is 180-240 mj/cm-2。
The polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is subjected to first vacuum spraying, leveling and ultraviolet light curing and drying treatment to obtain a wood product of the first semi-dry vacuum finish paint, wherein the ultraviolet semi-dry curing and drying energy is 150-mj/cm2。
The pre-treated wood product is prepared by adding a certain proportion of UV mixed colored finish paint of oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for primary vacuum spraying, and performing leveling, ultraviolet light curing and drying treatment to obtain a semi-dry vacuum spray-painted wood product; the combined semi-dry energy of the ultraviolet semi-dry curing drying energy gallium lamp and the mercury lamp is 180-240mj/cm2。
The polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is adopted for the first semi-dry vacuum color-correction wood product for the second vacuum spraying, leveling and ultraviolet light curing drying treatment are carried out, the full-dry vacuum spray-painted wood product is obtained, and the full-dry curing ultraviolet light curing drying energy in the ultraviolet light curing full-drying treatment process is 300-400mj/cm2。
The first semi-dry vacuum color correction wood product is subjected to secondary vacuum spraying by adding a certain proportion of UV mixed colored finish paint with oily color concentrate (according to product color, weight ratio of 100: 0.5-5) into polyester compound UV finish paint with viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, leveling, ultraviolet light curing and drying treatment are carried out to obtain a full-dry vacuum spray-painted wood product, and the combined full-dry energy of a full-dry curing ultraviolet light curing and drying gallium lamp and a mercury lamp in the ultraviolet light curing and full-drying treatment process is 300-2。
The method comprises the following steps of performing at least one multi-ester compound UV finish vacuum spraying, leveling and ultraviolet light curing treatment on the pretreated wood product to obtain a UV finish wood product:
the drying and curing linear speed of the first half-dry painted wooden product with the UV finish is 30-40m/min, and the drying and curing linear speed of the obtained full-dry painted wooden product is 30-40 m/min; the ultraviolet semi-dry curing and drying treatment for obtaining the first semi-dry painted wooden product of the UV finish paint is carried out, and semi-dry curing ultraviolet curing and drying energy in the ultraviolet curing, drying and semi-drying process for obtaining the semi-dry UV finish paint vacuum painted wooden productIs 150-220mj/cm2(ii) a The ultraviolet light (the combination of a gallium lamp and a mercury lamp) of the first half-dry painted wood product which is subjected to UV color correction or UV color-adding finishing coat is subjected to half-dry curing and drying treatment, and the combined drying energy of the full-dry curing ultraviolet light curing and drying gallium lamp and the mercury lamp in the whole process of obtaining the half-dry ultraviolet light curing and drying is 180-240 mj/cm-2(ii) a The obtained total dry curing ultraviolet light curing and drying energy in the ultraviolet light curing and total drying treatment process is 300-400mj/cm2(ii) a The total dry curing and drying energy gallium lamp and mercury lamp combination total dry energy in the process of obtaining the UV color correction or UV color-adding finish paint ultraviolet light curing and total drying treatment is 300-2。
A UV finish paint vacuum-painted wooden product is prepared by the method for vacuum-spraying the UV finish paint of the wooden product,
the vacuum spraying method of the UV finish paint of the wooden product is completed through a vacuum spraying production line of the UV finish paint, and does not need to be operated by pure hands, and the method comprises the following specific steps:
automatic feeding of wooden products is carried out through a first feeding machine on a UV finish paint vacuum paint spraying production line, the wooden products are conveyed to an automatic sander for sanding and polishing treatment of the surfaces of the wooden products through connection of a first connecting and positioning conveyor, the wooden products are cleaned and dedusted through a deduster in the conveying process, the wooden products after pretreatment are fed to the first vacuum spraying machine through a second positioning conveyor, the wooden products are heated through a first heating leveling machine I and a first heating leveling machine II after first vacuum spraying, the UV paint is heated to uniformly flow to ensure that the paint surfaces are smooth, ultraviolet curing drying is carried out in a UV ultraviolet curing dryer to obtain first half-dry spray paint, the wooden products sequentially pass through a third positioning conveyor, a second vacuum spraying machine, the second heating leveling machine I and a second heating leveling machine II, the second UV curing machine carries out second UV finish paint spraying, heating leveling ultraviolet curing drying to obtain full-dry spray wood And (4) conveying the fully-dried painted wooden products through a fourth positioning conveyor to obtain final UV primer wooden products, and discharging through an automatic discharging machine.
The polyester compound UV finish paint is obtained by compounding a plurality of ester compounds, a photoinitiator, a binder and a filler according to a certain proportion, wherein the ester compounds are preferably polyurethane acrylate and epoxy acrylate, and the photoinitiator is any one of 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2-dimethylamino-2-benzyl-1- [4- (4-morpholinyl) phenyl ] -1-butanone or alpha-hydroxyalkyl phenyl ketone; the binder is vinyl acetate emulsion or acrylic emulsion; the filler is composed of 2-acrylic acid- (1-methyl-1, 2-ethylidene) bis (beta-methyl chloroethyl) ester), 2-methyl-2-acrylic acid (2-hydroxyethyl) ester and talcum powder; the polyester UV primer comprises the following components in percentage by weight: 5-15% of polyurethane acrylate, 20-30% of epoxy acrylate, 2-5% of photoinitiator, 0.1-1% of binder, 2-10% of filler and the balance of UV monomer.
The invention has the beneficial effects that:
the invention provides a UV finish vacuum spraying method, which comprises the steps of pretreating a wood product, performing vacuum spraying on polyester compound UV finish at least once, leveling and ultraviolet drying instant photocuring in time to obtain a UV finish wood product, adopting an automatic production line continuous production line, finishing the wood product and finishing the finish on the production line at one time, enabling the production line speed to be more than 30-40m/min, utilizing 100% of paint, avoiding paint mist generation in the production process, causing no harm to the environment and operators, needing no paint spraying room and drying room, enabling the obtained UV finish wood product to have good flatness, meeting the requirements, being smooth in product surface, full in paint film, high in surface hardness (above H level), high in adhesive force, simple in production process, short in production time, high in production efficiency, high in product yield, low in material and energy consumption, is suitable for large-batch industrial production.
Drawings
FIG. 1 is a spray line drawing of the present invention.
FIG. 2 is a production line diagram of the present invention from the first feeder to the first heated leveler II.
Fig. 3 is a line drawing of the present invention from a UV light curing dryer to an automatic feeder.
In the figure, 1, a first feeder, 2, a first connecting and positioning conveyor, 3, an automatic sander, 4, a dust remover, 5, a second positioning conveyor, 6, a first vacuum sprayer, 7, a first heating leveling machine I, 8, a first heating leveling machine II, 9, a UV ultraviolet light curing dryer, 10, a third positioning conveyor, 11, a second vacuum sprayer, 12, a second heating leveling machine I, 13, a second heating leveling machine II, 14, a second UV ultraviolet light curing machine, 15, a fourth positioning conveyor, 16 and an automatic blanking machine.
Detailed Description
As shown in fig. 1-3, a method for vacuum spraying of UV top coat on a wood product specifically comprises the following steps:
sanding and polishing a primer wooden product to be treated to obtain a pretreated wooden product;
and carrying out at least one multi-ester compound UV finish vacuum spraying, leveling, ultraviolet light curing and drying treatment on the pretreated wood product to obtain the UV finish wood product.
The polyester compound UV finish paint is prepared by compounding urethane acrylate, epoxy acrylate, a filler, a UV monomer, a photoinitiator and a binder;
the ester compound in the multi-ester compound UV finishing paint is polyurethane acrylate and epoxy acrylate, and the photoinitiator is any one of 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2-dimethylamino-2-benzyl-1- [4- (4-morpholinyl) phenyl ] -1-butanone or alpha-hydroxyalkyl phenyl ketone; the binder is vinyl acetate emulsion or acrylic emulsion; the polyester compound UV finishing paint comprises the following components in percentage by weight: 5-15% of polyurethane acrylate, 20-30% of epoxy acrylate, 2-5% of photoinitiator, 0.1-1% of binder, 2-10% of filler and the balance of UV monomer.
The method comprises the following steps of carrying out at least one multi-ester compound UV finish vacuum spraying, leveling and ultraviolet light curing treatment on the pretreated wood product to obtain the UV finish wood product:
carrying out primary vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the pretreated wood product, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint at 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the pretreated wood product, performing primary vacuum spraying, leveling, and performing ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
carrying out first vacuum spraying on the pretreated wood product by adopting a UV color modifier (adding a certain proportion of oily color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a first semi-dry vacuum color-modified wood product; performing secondary vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum color-modified wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
carrying out first vacuum spraying on the pretreated wood product by adopting a UV color modifier (adding a certain proportion of oily color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a first semi-dry vacuum color-modified wood product; adding a certain proportion of UV mixed colored finish paint with oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first semi-dry vacuum color-modified wood product for secondary vacuum spraying, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
performing first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the preprocessed wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a first half-dry vacuum finish wood product; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum finish wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum finish paint-sprayed wood product;
performing first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the preprocessed wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a first half-dry vacuum finish wood product; adding a certain proportion of UV mixed colored finish paint with oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for a first half-dry vacuum finish paint wood product, performing secondary vacuum spraying, leveling, ultraviolet light curing and drying to obtain a full-dry vacuum finish paint spray paint wood product;
polyester compound UV finishing coat with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method of the preprocessed wood product is added with UV mixed colored finishing coat with certain proportion of oily color concentrates (the weight ratio is 100:0.5-5 according to product color), first vacuum spraying is carried out, leveling and ultraviolet light curing and drying treatment are carried out, and a first half-dry vacuum colored finishing coat wood product is obtained; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum colored finish wood product, and performing leveling and ultraviolet light curing drying treatment to obtain a full-dry vacuum finish paint-sprayed wood product;
polyester compound UV finishing coat with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method of the preprocessed wood product is added with UV mixed colored finishing coat with certain proportion of oily color concentrates (the weight ratio is 100:0.5-5 according to product color), first vacuum spraying is carried out, leveling and ultraviolet light curing and drying treatment are carried out, and a first half-dry vacuum colored finishing coat wood product is obtained; and (3) adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first half-dry vacuum colored finish paint wood product, performing secondary vacuum spraying, leveling, ultraviolet light curing and drying to obtain the full-dry vacuum finish paint spray paint wood product.
The method comprises the following steps of pretreating a wood product of primer to be treated to obtain the pretreated wood product of primer:
sanding and polishing the primer wooden product to be treated to obtain a polished wooden product;
and performing soot blowing and dust absorption treatment on the sanded and polished wood products to obtain dust-removed wood products, namely the pretreated wood products.
The polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is subjected to primary vacuum spraying, leveling and ultraviolet light curing drying treatment are carried out to obtain a first full-dry vacuum finish paint wood product, and the full-dry curing ultraviolet light curing drying energy in the ultraviolet light curing full-drying treatment process is 300-400mj/cm2。
The pretreated wood product is subjected to primary vacuum spraying by adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and then leveling, ultraviolet light curing and drying treatment are carried out to obtain a full-dry vacuum spray-painted wood product; the total dry curing and drying energy gallium lamp and mercury lamp combined total dry energy in the ultraviolet light curing and total drying treatment process is 300-2。
The polyester compound UV color modifier with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method (a certain proportion of oil color concentrate is added according to the product color, the weight ratio is 100: 0.5-5) is subjected to first vacuum spraying, leveling and ultraviolet light curing and drying treatment are carried out, a first semi-dry vacuum color-modified wood product is obtained, and the semi-dry energy of the combination of the ultraviolet semi-dry curing and drying energy gallium lamp and the mercury lamp is 180-240 mj/cm-2。
The polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is subjected to first vacuum spraying, leveling and ultraviolet light curing and drying treatment to obtain a wood product of the first semi-dry vacuum finish paint, wherein the ultraviolet semi-dry curing and drying energy is 150-220mj/cm2。
The pre-treated wood product is prepared by adding a certain proportion of UV mixed colored finish paint of oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for primary vacuum spraying, and performing leveling, ultraviolet light curing and drying treatment to obtain a semi-dry vacuum spray-painted wood product; the combined semi-dry energy of the ultraviolet semi-dry curing drying energy gallium lamp and the mercury lamp is 180-240mj/cm2。
The polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is adopted for the first semi-dry vacuum color-correction wood product for the second vacuum spraying, leveling and ultraviolet light curing drying treatment are carried out, the full-dry vacuum spray-painted wood product is obtained, and the full-dry curing ultraviolet light curing drying energy in the ultraviolet light curing full-drying treatment process is 300-400mj/cm2。
The first semi-dry vacuum color correction wood product is subjected to secondary vacuum spraying by adding a certain proportion of UV mixed colored finish paint with oily color concentrate (according to product color, weight ratio of 100: 0.5-5) into polyester compound UV finish paint with viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, leveling, ultraviolet light curing and drying treatment are carried out to obtain a full-dry vacuum spray-painted wood product, and the combined full-dry energy of a full-dry curing ultraviolet light curing and drying gallium lamp and a mercury lamp in the ultraviolet light curing and full-drying treatment process is 300-2。
The method comprises the following steps of performing at least one multi-ester compound UV finish vacuum spraying, leveling and ultraviolet light curing treatment on the pretreated wood product to obtain a UV finish wood product:
drying and curing linear speed for obtaining first semi-dry spray-painted wooden product with UV finish paintThe degree is 30-40m/min, and the drying and curing linear speed of the obtained full-dry spray-painted wood product is 30-40 m/min; the ultraviolet light semi-dry curing drying treatment of the first semi-dry painted wooden product with the UV finish paint is carried out, and the semi-dry curing ultraviolet light curing drying energy in the ultraviolet light curing drying semi-dry process of the semi-dry UV finish paint vacuum painted wooden product is 150-220mj/cm2(ii) a The ultraviolet light (the combination of a gallium lamp and a mercury lamp) of the first half-dry painted wood product which is subjected to UV color correction or UV color-adding finishing coat is subjected to half-dry curing and drying treatment, and the combined drying energy of the full-dry curing ultraviolet light curing and drying gallium lamp and the mercury lamp in the whole process of obtaining the half-dry ultraviolet light curing and drying is 180-240 mj/cm-2(ii) a The total dry curing ultraviolet light curing drying total dry energy in the ultraviolet light curing total dry treatment process for obtaining the UV finish paint is 300-2(ii) a The total dry curing and drying energy gallium lamp and mercury lamp combination total dry energy in the process of obtaining the UV color correction or UV color-adding finish paint ultraviolet light curing and total drying treatment is 300-2。
A UV finish paint vacuum-painted wooden product is prepared by the method for vacuum-spraying the UV finish paint of the wooden product,
the vacuum spraying method of the UV finish paint of the wooden product is completed through a vacuum spraying production line of the UV finish paint, and does not need to be operated by pure hands, and the method comprises the following specific steps:
automatic feeding of wood products is carried out through a first feeding machine 1 on a UV finish paint vacuum paint spraying production line, the wood products are conveyed to an automatic sanding machine 3 through a first connecting and positioning conveyor 2 to be sanded and polished on the surfaces of the wood products, the wood products are cleaned and dedusted in the conveying process through a deduster 4, the pretreated wood products are fed to a first vacuum spraying machine 6 through a second positioning conveyor 5, the wood products are heated through a first vacuum spraying in a first heating leveling machine I7 and a first heating leveling machine II 8 to ensure that the paint surfaces of the wood products are smooth, ultraviolet light curing and drying are carried out in a UV ultraviolet light curing dryer 9 to obtain first half-dry paint spraying wood products, and the first half-dry paint spraying wood products sequentially pass through a third positioning conveyor 10, a second vacuum spraying machine 11, a second heating leveling machine I12 and a second heating leveling machine II 13, And the second UV ultraviolet light curing machine 14 performs UV finish paint spraying, heating, leveling and ultraviolet light curing drying for the second time to obtain a full-dry painted wooden product, and then transmits the full-dry painted wooden product through a fourth positioning conveyor 15 to obtain a final UV primer wooden product, and the finished product is discharged through an automatic discharging machine 16.
Example (b):
the embodiment of the invention provides a vacuum spraying method of UV finishing coat of a wood product, which specifically comprises the following steps: pretreating a wood product to be treated to obtain a pretreated wood product; and carrying out at least one-time multi-ester compound UV finish vacuum spraying on the pretreated wood product, and carrying out ultraviolet light curing and drying treatment to obtain the UV primer wood product.
Wherein the pretreatment step specifically comprises: polishing the primer wooden product to be treated to obtain a polished wooden product; and performing soot blowing and dust absorption treatment on the polished wood products to obtain dust-removed wood products, namely the pretreated wood products. In the process, a sander is generally adopted for sanding, the mesh number of the selected abrasive belt is preferably 320 or 400 meshes, and good sanding and polishing effects are realized; the dust removal process adopts and blows the dirt cover and blow grey to be provided with the dust absorption mouth and carry out the dust absorption to it, remove the dust on woodwork surface to the greatest extent, in order to avoid influencing subsequent effect of spraying paint.
The polyester compound UV finish paint is obtained by compounding a plurality of ester compounds, a photoinitiator, a binder and a filler according to a certain proportion, wherein the ester compounds are preferably polyurethane acrylate and epoxy acrylate, and the photoinitiator is any one of 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2-dimethylamino-2-benzyl-1- [4- (4-morpholinyl) phenyl ] -1-butanone or alpha-hydroxyalkyl phenyl ketone; the binder is vinyl acetate emulsion or acrylic emulsion; the filling material consists of 2-acrylic acid- (1-methyl-1, 2-ethylidene) bis (beta-methyl chloroethyl) ester), 2-methyl-2-acrylic acid (2-hydroxyethyl) ester and talcum powder; the polyester UV primer comprises the following components in percentage by weight: 5-15% of polyurethane acrylate, 20-30% of epoxy acrylate, 2-5% of photoinitiator, 0.1-1% of binder, 2-10% of filler and the balance of UV monomer.
The vacuum spraying process of the polyester compound UV finish paint specifically comprises the following steps:
example 1:
carrying out primary vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the preprocessed wood product, carrying out leveling and ultraviolet light curing drying treatment to obtain a first full-dry UV finish paint wood product, wherein the spraying amount of the UV vacuum finish paint in the ultraviolet light curing full-drying treatment process is 25-35g/cm2The processing linear speed is 30-40m/min, and the total dry curing ultraviolet light curing drying energy is 300-2。
Example 2:
polyester with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is added with a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100:0.5-5 according to product color) for primary vacuum spraying, and leveling, ultraviolet light curing and drying treatment are carried out to obtain a full-dry vacuum spray-painted wood product; the spraying amount of the UV vacuum finish paint in the ultraviolet light curing and full-drying treatment process is 25-35g/cm2The processing linear speed is 30-40m/min, and the total dry energy of the combination of the total dry curing ultraviolet light curing drying energy gallium lamp and the mercury lamp is 300-2。
Example 3:
performing first vacuum spraying on polyester compound UV color modifier (adding certain proportion of oil color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method on the pretreated wood product, and performing leveling, ultraviolet light curing and drying treatment, wherein the spraying amount of UV vacuum finish paint in the ultraviolet light curing and semi-drying treatment process is 20-30g/cm2The processing linear speed is 30-40m/min, the combined semi-dry energy of the ultraviolet semi-dry curing drying energy gallium lamp and the mercury lamp is 180-2Obtaining a first semi-dry vacuum retouched wood product; performing secondary treatment on the polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first half-dry vacuum retouched wood productVacuum spraying, leveling, ultraviolet light curing and drying treatment, wherein the spraying amount of the UV vacuum finish paint in the ultraviolet light curing and drying treatment process is 20-30g/cm2The processing linear speed is 30-40m/min, and the total dry curing ultraviolet light curing drying energy is 300-2And obtaining the full-dry vacuum spray-painted wooden product.
Example 4:
performing first vacuum spraying on polyester compound UV color modifier (adding certain proportion of oil color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method on the pretreated wood product, and performing leveling, ultraviolet light curing and drying treatment, wherein the spraying amount of UV vacuum finish paint in the ultraviolet light curing and semi-drying treatment process is 20-30g/cm2The processing linear speed is 30-40m/min, the combined semi-dry energy of the ultraviolet semi-dry curing drying energy gallium lamp and the mercury lamp is 180-2Obtaining a first semi-dry vacuum retouched wood product; adding a certain proportion of UV mixed colored finish paint of oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first semi-dry vacuum color-corrected wood product for secondary vacuum spraying, leveling, ultraviolet light curing and drying, wherein the spraying amount of the UV vacuum finish paint in the ultraviolet light curing and full-drying process is 20-30g/cm2The processing linear speed is 30-40m/min, and the total dry energy of the combination of the total dry curing ultraviolet light curing drying energy gallium lamp and the mercury lamp is 300-2And obtaining the full-dry vacuum spray-painted wooden product.
Example 5:
performing first vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the pretreated wood product, leveling, performing ultraviolet light curing and drying treatment, wherein the spraying amount of the UV vacuum finish paint in the ultraviolet light curing and semi-drying treatment process is 20-30g/cm2The processing linear speed is 30-40m/min, the semi-drying energy of the ultraviolet semi-drying curing drying energy is 150-220mj/cm2Obtaining a first semi-dry vacuum finish paint wood product; wood products with first semi-dry vacuum finish paintPerforming secondary vacuum spraying on polyester compound UV finish with viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, leveling, performing ultraviolet light curing and drying treatment, wherein the spraying amount of the UV vacuum finish in the ultraviolet light curing and full-drying treatment process is 20-30g/cm2The processing linear speed is 30-40m/min, and the total dry energy of the total dry curing ultraviolet light curing drying is 300-400mj/cm2And obtaining the full-dry vacuum spray-painted wooden product.
Example 6:
adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the pretreated wood product, performing first vacuum spraying, leveling, ultraviolet light curing and drying, wherein the spraying amount of the UV vacuum colored finish paint in the ultraviolet light curing and semi-drying process is 20-30g/cm2The processing linear speed is 30-40m/min, the combined semi-dry energy of the ultraviolet semi-dry curing drying energy gallium lamp and the mercury lamp is 180-2Obtaining a first semi-dry vacuum stained wood product; adding a certain proportion of UV mixed colored finish paint of oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method of a first semi-dry vacuum colored wood product for secondary vacuum spraying, leveling, ultraviolet light curing and drying, wherein the spraying amount of the UV vacuum finish paint in the ultraviolet light curing and full-drying process is 20-30g/cm2The processing linear speed is 30-40m/min, and the total dry energy of the combination of the total dry curing ultraviolet light curing drying energy gallium lamp and the mercury lamp is 300-2And obtaining the full-dry vacuum spray-painted wooden product.
Example 7:
performing first vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the pretreated wood product, leveling, performing ultraviolet light curing and drying treatment, wherein the spraying amount of the UV vacuum finish paint in the ultraviolet light curing and semi-drying treatment process is 20-30g/cm2Processing linear speed of 30-40m/min, ultraviolet rayThe semi-dry curing drying energy is 150-220mj/cm2Obtaining a first semi-dry vacuum finish paint wood product; adding a certain proportion of UV mixed colored finish paint of oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method of a first semi-dry vacuum wood product for secondary vacuum spraying, leveling, ultraviolet light curing and drying, wherein the spraying amount of the UV vacuum finish paint in the ultraviolet light curing and full-drying process is 20-30g/cm2The processing linear speed is 30-40m/min, and the total dry energy of the combination of the total dry curing ultraviolet light curing drying energy gallium lamp and the mercury lamp is 300-2And obtaining the full-dry vacuum spray-painted wooden product.
Example 8:
adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the pretreated wood product, performing first vacuum spraying, leveling, ultraviolet light curing and drying, wherein the spraying amount of the UV vacuum colored finish paint in the ultraviolet light curing and semi-drying process is 20-30g/cm2The processing linear speed is 30-40m/min, the combined semi-dry energy of the ultraviolet semi-dry curing drying energy gallium lamp and the mercury lamp is 180-2Obtaining a first semi-dry vacuum colored finish paint wood product; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first half-dry vacuum colored finish wood product, leveling, performing ultraviolet light curing and drying treatment, wherein the spraying amount of the UV vacuum finish in the ultraviolet light curing and full-drying treatment process is 20-30g/cm2The processing linear speed is 30-40m/min, and the total dry energy of the total dry curing ultraviolet light curing drying is 300-400mj/cm2And obtaining the full-dry vacuum spray-painted wooden product.
In the eight embodiments, the UV finish paint is sprayed in vacuum by one-time spraying and two-time vacuum spraying in different modes, polyester compound UV finish paint with different viscosity and different spraying amount is sprayed each time, the coating amount and the energy of ultraviolet light curing and drying are different, if the two-time vacuum spraying is adopted, the first vacuum spraying is semi-dried, and finally, the full-drying treatment is carried out, so that the hardness of the obtained UV finish paint wood product can reach above H level, and the obtained UV finish paint wood product has good adhesive force, wear resistance and flatness; the product surface is smooth and the paint film is full; the production process is simple, the production time is short, the production efficiency is high, the material and energy consumption is low, and the requirements of the existing spraying process can be met.
Automatic continuous production has shortened UV finish paint vacuum paint spraying time simultaneously, reduces the work piece turnover number of times, improves work efficiency and the waste of paint, does not have the coating cloud to produce in the production process, the effectual environment of having protected and operator's is healthy.
The embodiment of the invention also provides a UV primer wood product, which is prepared according to the method and has a paint layer with strong adhesive force, wear resistance and good flatness.

Claims (13)

1. A vacuum spraying method for UV finish paint of wood products is characterized by comprising the following steps:
sanding and polishing a primer wooden product to be treated to obtain a pretreated wooden product;
and carrying out at least one multi-ester compound UV finish vacuum spraying, leveling, ultraviolet light curing and drying treatment on the pretreated wood product to obtain the UV finish wood product.
2. The woodwork finish UV paint vacuum paint spraying method according to claim 1, characterized in that the polyester compound UV finish paint is prepared by compounding urethane acrylate, epoxy acrylate, a filler, a UV monomer, a photoinitiator and a binder;
the ester compound in the multi-ester compound UV finishing paint is polyurethane acrylate and epoxy acrylate, and the photoinitiator is any one of 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, 2-dimethylamino-2-benzyl-1- [4- (4-morpholinyl) phenyl ] -1-butanone or alpha-hydroxyalkyl phenyl ketone; the binder is vinyl acetate emulsion or acrylic emulsion; the polyester compound UV finishing paint comprises the following components in percentage by weight: 5-15% of polyurethane acrylate, 20-30% of epoxy acrylate, 2-5% of photoinitiator, 0.1-1% of binder, 2-10% of filler and the balance of UV monomer.
3. The wood product finish UV paint vacuum spraying method according to claim 1, wherein the step of obtaining the UV finish wood product after at least one multi-ester compound UV finish vacuum spraying, leveling and ultraviolet light curing treatment of the pretreated wood product specifically comprises:
carrying out primary vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the pretreated wood product, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method is added with UV mixed colored finish paint with certain proportion of oily color concentrates (the weight ratio is 100:0.5-5 according to product color), primary vacuum spraying is carried out, leveling and ultraviolet light curing and drying treatment are carried out, and a full-dry vacuum spray-painted wood product is obtained;
carrying out first vacuum spraying on the pretreated wood product by adopting a UV color modifier (adding a certain proportion of oily color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a first semi-dry vacuum color-modified wood product; performing secondary vacuum spraying on polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum color-modified wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
carrying out first vacuum spraying on the pretreated wood product by adopting a UV color modifier (adding a certain proportion of oily color concentrate according to the product color, the weight ratio is 100: 0.5-5) with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a first semi-dry vacuum color-modified wood product; adding a certain proportion of UV mixed colored finish paint with oily color concentrate (weight ratio is 100: 0.5-5) into polyester compound UV finish paint with viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first semi-dry vacuum color-modified wood product for secondary vacuum spraying, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum spray-painted wood product;
performing first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the preprocessed wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a first half-dry vacuum finish wood product; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum finish wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum finish paint-sprayed wood product;
performing first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the preprocessed wood product, and performing leveling, ultraviolet light curing and drying treatment to obtain a first half-dry vacuum finish wood product; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first semi-dry vacuum finish wood product and a UV mixed colored finish with a certain proportion of oily color concentrates (according to product color blending, weight ratio: 100: 0.5-5), and performing leveling, ultraviolet light curing and drying treatment to obtain a full-dry vacuum finish paint spraying wood product;
carrying out first vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method on the preprocessed wood products and adding a certain proportion of UV mixed colored finish (according to product color, the weight ratio is 100: 0.5-5) of oily color concentrates, and carrying out leveling, ultraviolet light curing and drying treatment to obtain first half-dry vacuum colored finish wood products; performing secondary vacuum spraying on polyester compound UV finish with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measuring method on the first semi-dry vacuum colored finish wood product, and performing leveling and ultraviolet light curing drying treatment to obtain a full-dry vacuum finish paint-sprayed wood product;
polyester compound UV finishing coat with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method of the preprocessed wood product is added with UV mixed colored finishing coat with certain proportion of oily color concentrates (the weight ratio is 100:0.5-5 according to product color), first vacuum spraying is carried out, leveling and ultraviolet light curing and drying treatment are carried out, and a first half-dry vacuum colored finishing coat wood product is obtained; and (3) adding a certain proportion of UV mixed colored finish paint of oily color concentrate (the weight ratio is 100: 0.5-5) into polyester compound UV finish paint with the viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method for the first half-dry vacuum colored finish paint wood product, performing secondary vacuum spraying, leveling, ultraviolet light curing and drying to obtain the full-dry vacuum finish paint spray paint wood product.
4. The wood product top coat UV vacuum paint spraying method according to claim 1, characterized in that the pretreatment of the primer wood product to be treated to obtain a pretreated primer wood product specifically comprises:
sanding and polishing the primer wooden product to be treated to obtain a polished wooden product;
and performing soot blowing and dust absorption treatment on the sanded and polished wood products to obtain dust-removed wood products, namely the pretreated wood products.
5. The wood product finish UV vacuum spraying method according to claim 3, wherein said polyester type compound UV finish with a viscosity of 100 ± 25cps/25 ℃ measured by rotational viscometer measurement is subjected to one vacuum spraying, leveling, UV light curing and drying treatment to obtain a first full dry vacuum finish wood product, wherein the full dry curing UV light curing and drying energy in the UV light curing and full drying treatment process is 300-2。
6. The wood product finish UV vacuum spraying method according to claim 3, characterized in that the polyester compound UV finish with viscosity of 100 ± 25cps/25 ℃ measured by rotational viscometer measurement method is added with a certain proportion of UV mixed colored finish of oil color concentrate (according to product color blending, weight ratio: 100: 0.5-5) for primary vacuum spraying, and leveling, ultraviolet light curing and drying treatment are carried out to obtain full-dry vacuum spray-painted wood products; the total dry curing and drying energy gallium lamp and mercury lamp combined total dry energy in the ultraviolet light curing and total drying treatment process is 300-2。
7. The wood finish UV vacuum spraying method according to claim 3, characterized in that the polyester compound UV color modifier with viscosity of 100 ± 25cps/25 ℃ measured by rotational viscometer measurement (certain proportion of oil color concentrate is added according to product color, weight ratio is 100: 0.5-5) is subjected to first vacuum spraying, leveling, UV light curing and drying treatment are carried out to obtain a first semi-dry vacuum color modified wood product, and the combined semi-dry energy of the UV semi-dry curing and drying energy gallium lamp and the mercury lamp is 180-2。
8. The wood product finish UV vacuum spraying method according to claim 3, wherein the polyester type compound UV finish with the viscosity of 100 ± 25cps/25 ℃ measured by rotational viscometer measurement is subjected to first vacuum spraying, leveling, ultraviolet light curing and drying treatment to obtain a first semi-dry vacuum finish wood product, and the ultraviolet semi-dry curing and drying energy is 150-2。
9. The method for UV vacuum spraying of wood finish according to claim 3, wherein the polyester-based compound UV finish with viscosity of 100 ± 25cps/25 ℃ measured by rotational viscometer measurement method for the pre-treated wood is added with a certain proportion of oil color concentrate (according to product color blending, weight ratio: 100: 0.5-5) UV mixed colored finishCarrying out primary vacuum spraying, and carrying out leveling, ultraviolet light curing and drying treatment to obtain a semi-dry vacuum spray-painted wood product; the combined semi-dry energy of the ultraviolet semi-dry curing drying energy gallium lamp and the mercury lamp is 180-240mj/cm2。
10. The UV primer vacuum spraying method for wood products according to claim 3, wherein the first half-dry vacuum color-correction wood product is subjected to second vacuum spraying by polyester compound UV finish paint with viscosity of 100 +/-25 cps/25 ℃ measured by a rotational viscometer measurement method, leveling and ultraviolet light curing drying treatment are carried out to obtain a full-dry vacuum spray-painted wood product, and the full-dry curing ultraviolet light curing drying energy in the ultraviolet light curing full-drying treatment process is 300-400mj/cm2。
11. The method for vacuum spraying of UV primer for wooden products as claimed in claim 3, wherein the first half-dry vacuum color-correction wooden product is subjected to secondary vacuum spraying by adding a certain proportion of UV mixed colored finish paint with oily color concentrate (prepared according to product color, weight ratio: 100: 0.5-5) into polyester compound UV finish paint with viscosity of 100 ± 25cps/25 ℃ measured by rotational viscometer measurement, leveling, ultraviolet light curing and drying treatment are carried out to obtain a full-dry vacuum spray-painted wooden product, and the combined full-dry energy of the full-dry curing ultraviolet light curing and drying energy gallium lamp and mercury lamp in the ultraviolet light curing and full-drying treatment process is 300-2。
12. The wood product UV finish paint vacuum spraying method according to claim 3, characterized in that in the step of obtaining the UV finish paint wood product after at least one multi-ester compound UV finish paint vacuum spraying, leveling and ultraviolet light curing treatment on the pretreated wood product:
the drying and curing linear speed of the first half-dry painted wooden product with the UV finish is 30-40m/min, and the drying and curing linear speed of the obtained full-dry painted wooden product is 30-40 m/min; ultraviolet light semi-dry curing and drying treatment for obtaining UV finish paint first semi-dry painted wooden productThe semi-dry curing ultraviolet curing drying energy in the semi-dry curing drying process of the obtained semi-dry UV finish paint vacuum spray-painted wood product is 150-220mj/cm2(ii) a The ultraviolet light (combination of a gallium lamp and a mercury lamp) semi-dry curing and drying treatment for obtaining the UV color-correcting or UV color-adding finish paint first semi-dry painted wood product is carried out, and the combined drying energy of the semi-dry curing ultraviolet light curing and drying gallium lamp and the mercury lamp in the whole process of obtaining the UV finish paint semi-dry curing and drying is 180-fold 240mj/cm2(ii) a The total dry curing ultraviolet light curing drying total dry energy in the ultraviolet light curing total dry treatment process for obtaining the UV finish paint is 300-2(ii) a The total dry curing and drying energy gallium lamp and mercury lamp combination total dry energy in the process of obtaining the UV color correction or UV color-adding finish paint ultraviolet light curing and total drying treatment is 300-2。
13. A UV finish vacuum painted wood product, characterized in that the UV finish vacuum painted wood product is prepared according to the wood product UV finish vacuum spraying method of any claim 1-12,
the vacuum spraying method of the UV finish paint of the wooden product is completed through a vacuum spraying production line of the UV finish paint, and does not need to be operated by pure hands, and the method comprises the following specific steps:
at UV finish paint vacuum lacquer spraying production line with woodwork automatic feeding through first feeder (1), convey woodwork to automatic sander (3) through connecting first connection positioning conveyor (2) and carry out woodwork surface sand light and polishing treatment, and carry out woodwork surface cleaning dust removal treatment in this transfer process through dust shaker (4), through second positioning conveyor (5) woodwork material loading to first vacuum coating machine (6) after with the preliminary treatment, through first vacuum coating after first heating levelling machine I (7) and first heating levelling machine II (8) to the woodwork heating, make UV lacquer be heated even flow and guarantee that the paint finish is smooth, and carry out ultraviolet ray photocuring drying in UV ultraviolet photocuring desiccator (9) and obtain first half dry woodwork that sprays paint, loop through third positioning conveyor (10) again, second vacuum coating machine (11), Second heating levelling machine I (12) and second heating levelling machine II (13), second UV ultraviolet photocuring machine (14) carry out the UV finish paint spraying of second time and heat levelling ultraviolet photocuring drying and obtain the woodwork of spraying entirely dry, will spray the woodwork of spraying entirely dry again through fourth location conveyer (15) conveying, obtain final UV priming paint woodwork, through automatic blanking machine (16) unloading.
CN202010808696.6A 2020-08-12 2020-08-12 Vacuum spraying method for UV finish paint of wooden products and UV finish paint vacuum painted wooden products Pending CN111842081A (en)

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