CN112191479A - EB (Electron beam) -cured polypropylene film veneer multilayer composite floor chamfer paint coating process - Google Patents
EB (Electron beam) -cured polypropylene film veneer multilayer composite floor chamfer paint coating process Download PDFInfo
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- CN112191479A CN112191479A CN202010996397.XA CN202010996397A CN112191479A CN 112191479 A CN112191479 A CN 112191479A CN 202010996397 A CN202010996397 A CN 202010996397A CN 112191479 A CN112191479 A CN 112191479A
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- 238000000576 coating method Methods 0.000 title claims abstract description 52
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 43
- 238000010894 electron beam technology Methods 0.000 title claims abstract description 39
- 239000003973 paint Substances 0.000 title claims abstract description 39
- -1 polypropylene Polymers 0.000 title claims abstract description 37
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 37
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 238000001035 drying Methods 0.000 claims abstract description 30
- 238000003851 corona treatment Methods 0.000 claims abstract description 24
- 239000004922 lacquer Substances 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 7
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000009408 flooring Methods 0.000 claims description 2
- 239000002023 wood Substances 0.000 abstract description 17
- 239000007787 solid Substances 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000001227 electron beam curing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 37
- 238000001723 curing Methods 0.000 description 23
- 229920005989 resin Polymers 0.000 description 15
- 239000011347 resin Substances 0.000 description 15
- 239000012141 concentrate Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000003431 cross linking reagent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011120 plywood Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007761 roller coating Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000013035 low temperature curing Methods 0.000 description 2
- 210000002381 plasma Anatomy 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002635 electroconvulsive therapy Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003847 radiation curing Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
Images
Classifications
-
- 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
- B05D3/14—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 electrical 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
-
- 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
- B05D3/0263—After-treatment with IR heaters
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Floor Finish (AREA)
Abstract
The invention belongs to the technical field of high polymer materials, relates to paint coating, and particularly relates to an EB (Electron beam) -cured polypropylene film veneer multilayer composite floor chamfer paint coating process, which comprises the following steps: shaping chamfer → corona treatment → coating minor face → drying → coating long face → drying → offline packaging, carry out corona treatment to PP membrane surface earlier and scribble the chamfer lacquer again, wherein corona treatment, utilize corona equipment to carry out corona discharge in the polypropylene membrane surface of EB solidification promptly, high frequency alternating voltage 5000 ~ 15000V/m2. The invention has simple production process, little environmental pollution, lower cost and higher comprehensive value, and solves the problems that the chamfer part of the prepared EB-cured polypropylene film-faced multilayer composite floor is exposed to white and the adhesion force of the surface of the multilayer composite floor coated with chamfer paint is poor by combining an electron beam curing technology and the multilayer solid wood composite floorThe problem of slow drying speed, the coating is tough and high-elasticity, has strong adhesion, higher hardness and strong bonding adhesion with the coating.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, relates to paint coating, and particularly relates to an EB (electron beam) cured coating process for chamfer paint of a polypropylene film veneer multilayer composite floor.
Background
The multilayer solid wood composite floor is prepared by coating special paint for the ultraviolet light curing floor, which has high performance, high wear resistance and high environmental protection, on a substrate which is a natural rare tree species veneer (veneer) with different thicknesses and a plywood made of solid wood veneers with criss-cross textures, and is widely applied to the household building material industry. However, with the shortage of forest resources, the resource limitation of the solid wood composite floor is increased, and especially the available resources of hard broad-leaved trees with the ages of tens of years or even hundreds of years are reduced quickly. The price of raw materials is continuously rising, the yield is greatly reduced, and the requirements on the more valuable multilayer surface plates of the multilayer solid wood composite floor are more and more strict.
Electron Beam (EB) curing technology is an important branch of radiation curing technology. The electron beam emitted from a cathode ray tube is linearly accelerated by an electric field, so that the energy of the electron beam reaches 100-400 KeV; the electron beam irradiates the coating containing unsaturated double bonds to initiate the polymerization of the coating, so as to achieve the aim of curing the coating, and the technology is widely applied to the fields of automobile coating curing and various coatings. In the electron beam/wire (EB) film, resin is polymerized by irradiating resin paint (liquid) with EB, thereby changing the properties of the substance, adding new functions to the substance, and instantly obtaining a film (solid) with high hardness. The EB curing technology is an environment-friendly, energy-saving and sanitary coating curing technology, accords with the national industry development direction, and is worth being vigorously promoted.
Chinese patent CN207808670U discloses an electronic wire cured film multilayer composite floor, which comprises a UV paint film, an electronic wire cured film and a multilayer substrate layer in sequence from top to bottom, wherein the multilayer substrate layer is a plywood formed by fast growing wood veneers through criss-cross lamination, and the electronic wire cured film is adhered on the upper surface of the plywood through a polyvinyl alcohol adhesive. The electronic wire cured film multilayer composite floor base material adopts the criss-cross base material of the original fast growing wood veneer. On the basis, Chinese patent CN209760683U discloses an EB-cured polypropylene film-faced multilayer composite floor board, which is prepared by attaching a film which is prepared by taking polypropylene as a raw material and has wood texture, an antique effect and a paint treatment effect by using an EB curing technology to the surface of a multilayer solid wood base material by fully utilizing the electron beam curing technology. The tension situation of the current wood resources is solved, and the natural texture characteristics of the wood are retained to the maximum extent; the EB film and the multiple layers of base materials are pasted and pressed by polyurethane resin at one time, ultraviolet light curing UV paint is not needed to be coated on the surface of the EB film, the multiple layers of base materials are the multiple layers of base materials special for EB, and compared with the complex production processes of a common multilayer solid wood composite floor, such as scribing, veneering, cold pressing, hot pressing and the like, the coating is tough and high in elasticity, very strong in adhesion and high in hardness. The technology has the advantages of simple production process, small environmental pollution, lower cost and higher comprehensive value.
However, in the actual production and use process, because the surface of the multilayer solid wood composite base material is the EB-cured polypropylene film, the thickness is 0.27 mm, the plywood base material is used for the multilayer solid wood composite floor with the EB-cured polypropylene film veneer, the wood texture of the surface layer of the base material is parallel to the length direction of the EB-cured polypropylene film, in addition, the chamfer angle is only 0.3-0.5 mm, the chamfer angle is 10-60 degrees, the chamfer part is easy to be exposed white after molding, chamfer paint needs to be coated, but the coating interface of the chamfer paint is the junction of the EB-cured polypropylene film and the multilayer solid wood composite base material, and the problems of poor adhesion, slow drying speed and uneven drying exist after the chamfer paint is coated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to disclose a coating process of EB (electron beam) cured polypropylene film veneer multilayer composite floor chamfer paint.
The chamfer paint coating process for EB cured multilayer composite floor board with polypropylene film facing includes forming chamfer → corona treatment → coating short side → stoving → coating long side → stoving → offline packing, corona treatment of PP film surface and subsequent chamfer paint coating, and the corona treatment is completed through utilizingCorona equipment carries out corona discharge on the surface of the polypropylene film solidified by EB (Electron Beam), and the high-frequency alternating voltage is 5000-15000V/m2。
In the forming chamfering process, the plate blank after cutting is subjected to forming grooves and tongues, floor chamfers are machined, the chamfer size is about 0.3-0.5 mm, and the chamfer angle is an inclined right angle which is about 10-60 degrees.
In the preferred embodiment of the invention, in the corona treatment process, the temperature of a corona spray gun is 500-1000 ℃, the distance between the spray gun and an EB (electron beam) cured polypropylene film is about 50-100 mm, and the corona time is about 0.5-3 s.
In a preferred embodiment of the invention, the coating process adopts a roller coating mode, the roller is inclined, the plane of the roller is parallel to the chamfer angle plane, the upper part of the roller is connected with a conduit, the conduit is connected with an oil tank for storing chamfer angle paint, and the coating weight is about 5-10 g/m2The thickness of the film is about 0.1 to 0.5 mm.
In the preferred embodiment of the invention, the drying procedure is to convey the plate coated with the chamfer paint to a drying tunnel, the drying tunnel adopts an infrared electronic heating mode, the temperature is 100-200 ℃, and the heating time of the drying tunnel is 5-15 s.
Corona treatment is an electrical shock treatment which gives higher adhesion to the surface of the substrate using an imported one-machine corona device. Corona discharge is carried out on the surface of the polypropylene film solidified by EB by using high-frequency high voltage (the high-frequency alternating voltage is 5000-15000V/m)2) And low-temperature plasmas are generated to generate radical reaction on the surface of the polypropylene film solidified by EB to crosslink, roughen and increase the wettability of the polymer to polar solvents, the plasmas enter the surface of a printed body by electric shock and permeation to destroy the molecular structure of the printed body, further oxidize and polarize the molecules of the treated surface, and the electric shock is used for eroding the surface, so that the adhesive capacity of the surface of the printed material is increased.
An EB cured polypropylene film facing multilayer composite floor chamfer paint commonly used in the industry comprises base main body resin, curing agent and color concentrate.
Generally, the base resin is a Japanese imported main body resin, the main component of the base resin is a low-temperature curing type synthetic resin, the main body of the base resin is milky viscous fluid, the viscosity of the main body is about 5000-20000 mPa.s, the solid content of the main body is about 10-20%, the viscosity of the main body is moderate, the base resin is easy to pour, and the base resin does not flow on a plate surface during coating.
The curing agent is Japanese imported viscous liquid, the main component of the curing agent is polyurethane transparent viscous liquid, the viscosity of the curing agent is 500-1000 mPa & s, and the solid content of the curing agent is about 10-20%.
The color concentrate is a water-based color concentrate imported from Japan, the main colors of the color concentrate comprise yellow, black, red and white, and the color concentrate is adjusted according to the color of the board surface.
When the chamfer paint is used, the main resin, the curing agent and the color concentrates are uniformly mixed according to the mass ratio of 50-100: 10-50: 5-45, the addition amount of the main resin is 55-85% generally, the color concentrates of four colors are adjusted according to different proportions of the board surface color, the addition amount of the color concentrates is 15-45%, the base resin and the color concentrates are uniformly mixed and stirred, the curing cross-linking agent is added before stirring for use, the curing cross-linking agent accounts for about 15-35% of the sum of the mass of the resin and the color concentrates, the resin and the color concentrates are slightly and uniformly stirred, a small amount of water can be added for adjustment, the addition amount accounts for about 10-30% of the sum of the mass of the resin and the color concentrates, the viscosity of the mixed chamfer paint is moderate, the board surface is; the chamfer paint has the advantages of high curing speed, short curing time, low-temperature curing, curing cross-linking agent and good adhesion after curing.
Advantageous effects
The invention has simple production process, little environmental pollution, lower cost and higher comprehensive value, solves the problems that the chamfer part of the prepared EB-cured polypropylene film-faced multilayer composite floor is exposed to white, the adhesion force of the board surface is poorer after the chamfer paint is coated and the drying speed is slower by combining the electron beam curing technology with the multilayer solid wood composite floor, and has tough coating, strong adhesion, higher hardness and strong bonding adhesion with the coating. The technical problems of poor chamfer paint surface adhesion effect, poor surface and the like of the thin-film veneer multilayer composite floor are solved. The method has the advantages of high curing speed, short curing time, capability of curing at a lower temperature, and good adhesion after curing by the curing crosslinking agent.
Drawings
FIG. 1 is a flow chart of a process for coating chamfer paint on an EB-cured polypropylene film-faced multi-layer composite floor.
Detailed Description
The present invention will be described in detail below with reference to examples to enable those skilled in the art to better understand the present invention, but the present invention is not limited to the following examples.
Example 1
The coating process of the chamfer paint of the EB-cured polypropylene film veneer multilayer composite floor comprises the steps of molding chamfer → corona treatment → coating short side → drying → coating long side → drying → offline packaging, wherein the surface of the PP film is firstly subjected to corona treatment and then coated with the chamfer paint, wherein the corona treatment is that corona discharge is carried out on the surface of the EB-cured polypropylene film by utilizing corona equipment, and the high-frequency alternating voltage is 5000V/m2。
In the molding chamfering process, the floor chamfer is processed on the plate blank after cutting through a molding groove, the chamfer size is about 0.3mm, and the chamfer angle is an inclined right angle of about 10 degrees.
In the corona treatment process, the temperature of a corona spray gun is 500 ℃, the distance between the spray gun and the EB-cured polypropylene film is about 50mm, and the corona time is about 0.5 s.
The coating process adopts a roller coating mode, the roller is inclined, the plane of the roller is parallel to the chamfer plane, the upper part of the roller is connected with a conduit, the conduit is connected with an oil tank for storing chamfer paint, and the coating weight is about 5g/m2The film thickness was about 0.1 mm.
And in the drying procedure, the plate coated with the chamfer paint is conveyed to a drying tunnel, the drying tunnel adopts an infrared electronic heating mode, the temperature is 100 ℃, and the heating time of the drying tunnel is 5 s.
Example 2
The coating process of the chamfer paint of the EB-cured polypropylene film veneer multilayer composite floor comprises the steps of molding chamfer → corona treatment → coating short side → drying → coating long side → drying → offline packaging, wherein the surface of the PP film is subjected to corona treatment and then coated with the chamfer paint, wherein the corona treatment is that corona equipment is utilized to perform corona discharge on the surface of the EB-cured polypropylene film, and the high-frequency alternating voltage is 10000V/m2。
In the molding chamfering process, the floor chamfer is processed on the plate blank after cutting through a molding groove, the chamfer size is about 0.4mm, and the chamfer angle is an inclined right angle of about 40 degrees.
In the corona treatment process, the temperature of a corona spray gun is 750 ℃, the distance between the spray gun and the EB-cured polypropylene film is about 70mm, and the corona time is about 2 s.
The coating process adopts a roller roll coating mode, the roller is inclined, the plane of the roller is parallel to the chamfer plane, the upper part of the roller is connected with a conduit, the conduit is connected with an oil tank for storing chamfer paint, and the coating weight is about 5-10 g/m2The film thickness was about 0.3 mm.
And in the drying procedure, the plate coated with the chamfer paint is conveyed to a drying tunnel, the drying tunnel adopts an infrared electronic heating mode, the temperature is 150 ℃, and the heating time of the drying tunnel is 10 s.
Example 3
The utility model provides a coating process of EB solidification's polypropylene membrane veneer multilayer laminate flooring's chamfer lacquer, includes shaping chamfer → corona treatment → coating minor face → stoving → coating long limit → stoving → offline packaging, carries out corona treatment to PP membrane surface earlier and coats the chamfer lacquer again, wherein corona treatment utilizes corona equipment to carry out corona discharge in the polypropylene membrane surface of EB solidification promptly, high frequency alternating voltage 15000V/m2。
In the molding chamfering process, the floor chamfer is processed on the plate blank after cutting through a molding groove, the chamfer size is about 0.5mm, and the chamfer angle is an inclined right angle of about 60 degrees.
In the corona treatment process, the temperature of a corona spray gun is 1000 ℃, the distance between the spray gun and the EB-cured polypropylene film is about 100mm, and the corona time is about 3 s.
The coating process adopts a roller coating mode, the roller is inclined, the plane of the roller is parallel to the chamfer plane, the upper part of the roller is connected with a conduit, the conduit is connected with an oil tank for storing chamfer paint, and the coating weight is about 10g/m2The film thickness was about 0.5 mm.
And in the drying procedure, the plate coated with the chamfer paint is conveyed to a drying tunnel, the drying tunnel adopts an infrared electronic heating mode, the temperature is 200 ℃, and the heating time of the drying tunnel is 15 s.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (5)
1. The utility model provides a chamfer lacquer coating process of polypropylene membrane veneer multilayer laminate flooring of EB solidification, includes shaping chamfer → corona treatment → coating minor face → stoving → coating long limit → stoving → offline packaging, carries out corona treatment to PP membrane surface earlier and coats the chamfer lacquer again, its characterized in that: corona treatment, namely corona discharge is carried out on the surface of the polypropylene film solidified by EB (Electron Beam) by utilizing corona equipment, and the high-frequency alternating voltage is 5000-15000V/m2。
2. The process for applying a chamfer lacquer to an EB cured polypropylene film faced multi-layer composite floor according to claim 1, wherein: in the molding chamfering process, the slab after cutting is subjected to molding tongue-and-groove processing to form floor chamfers, the chamfer size is about 0.3-0.5 mm, and the chamfer angle is an inclined right angle of about 10-60 degrees.
3. The process for applying a chamfer lacquer to an EB cured polypropylene film faced multi-layer composite floor according to claim 1, wherein: in the corona treatment process, the temperature of a corona spray gun is 500-1000 ℃, the distance between the spray gun and the EB-cured polypropylene film is about 50-100 mm, and the corona time is about 0.5-3 s.
4. The process for applying a chamfer lacquer to an EB cured polypropylene film faced multi-layer composite floor according to claim 1, wherein: the coating process adopts a roller roll coating mode, the roller is inclined, the plane of the roller is parallel to the chamfer plane, the upper part of the roller is connected with a conduit, the conduit is connected with an oil tank for storing chamfer paint, and the coating weight is about 5-10 g/m2The thickness of the film is about 0.1 to 0.5 mm.
5. The process for applying a chamfer lacquer to an EB cured polypropylene film faced multi-layer composite floor according to claim 1, wherein: and in the drying procedure, the plate coated with the chamfer paint is conveyed to a drying tunnel, the drying tunnel adopts an infrared electronic heating mode, the temperature is 100-200 ℃, and the heating time of the drying tunnel is 5-15 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996397.XA CN112191479A (en) | 2020-09-21 | 2020-09-21 | EB (Electron beam) -cured polypropylene film veneer multilayer composite floor chamfer paint coating process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996397.XA CN112191479A (en) | 2020-09-21 | 2020-09-21 | EB (Electron beam) -cured polypropylene film veneer multilayer composite floor chamfer paint coating process |
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| CN112191479A true CN112191479A (en) | 2021-01-08 |
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| CN202010996397.XA Pending CN112191479A (en) | 2020-09-21 | 2020-09-21 | EB (Electron beam) -cured polypropylene film veneer multilayer composite floor chamfer paint coating process |
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