Film-coated color-coated sheet based on EB curing

Abstract

The utility model relates to the technical field of color-coated sheet production, in particular to a film-coated color-coated sheet based on EB curing, which comprises a base plate, a back paint layer and a finish paint layer, the back paint layer is arranged on one side of the base plate close to working equipment, and the finish paint layer is arranged on one side of the base plate close to external environment. The finish paint layer sequentially comprises an outer side protective film, a decorative film and a surface curing layer from the outside to the substrate in the thickness direction, and the surface curing layer is an EB curing adhesive. The problems that in the existing color-coated sheet production process, the process period is long, and environmental pollution is likely to be caused are effectively solved. EB curing is combined in a roller painting color drawing board process production line, EB curing adhesive is adopted, VOC emission is avoided, environment friendliness is achieved, pollution to the environment in the production process is effectively reduced, EB curing time is short, the production line speed can be greatly increased, and therefore higher production efficiency is achieved, the heating and cooling process is omitted, and the production cost is reduced. Expansion and shrinkage of the decorative film during film covering are avoided, and a more smooth plate surface effect can be obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the production technical field of color coated plate, concretely relates to a film coated color coated plate based on EB solidification. BACKGROUND

[0002] The patent with the patent number CN 118703988 A discloses a film-coated cold-rolled steel plate manufacturing process and the film-coated cold-rolled steel plate, which adopts a cold-rolled steel plate to replace a chromium-plated steel plate or a tin-plated steel plate, reduces the use of tin materials and plating materials, makes the film-coated plate production process more green and environmentally friendly, and improves the adhesion between the substrate and the film and the stability of the finished product by adopting passivation treatment, non-contact and contact heating, and sharp cooling while setting the optimal conditions. The heat curing energy utilization rate is relatively low, and the process cycle is relatively long. Pollution will occur to some extent during the heating process. SUMMARY

[0003] In view of the above problems, the utility model aims at providing a film coated color coated plate based on EB solidification to effectively solve the problems of long process cycle and environmental pollution in the production of existing color coated plates.

[0004] The technical scheme of the utility model is a film coated color coated plate based on EB solidification, which comprises a substrate, a back paint layer and a top paint layer. The back paint layer is arranged on the side of the substrate close to the working equipment. The top paint layer is arranged on the side of the substrate close to the external environment. The top paint layer comprises, in order from the external environment to the substrate along the thickness direction, an external protective film, a decorative film and a top solidification layer. The top solidification layer is an EB solidification adhesive.

[0005] Preferably, the back paint layer comprises, in order from the working equipment to the substrate along the thickness direction, an internal protective film and a back solidification layer.

[0006] Preferably, the internal protective film and the external protective film are both PE protective films, and the decorative film is a PVC film or a PET film.

[0007] Preferably, the wet film thickness of the top solidification layer is 32-38 microns, and the wet film thickness of the back solidification layer is 14-18 microns.

[0008] Preferably, the solidification electron beam energy of the top solidification layer and the back paint layer is 120-200 keV.

[0009] Preferably, the substrate material is metal.

[0010] The utility model has the advantages of:

[0011] The utility model discloses a kind of film-coated color-coated plates based on EB curing, including substrate 1, back paint layer being arranged in substrate 1 one side and topcoat layer being arranged in substrate 1 other side, wherein back paint layer is the side towards working equipment, when installing, substrate 1 will be installed on equipment by rivet, bolt or buckle etc. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the three-dimensional development structure schematic diagram of the utility model;

[0013] Figure 2 It is the cut main view structure schematic diagram of the utility model;

[0014] In the drawing, 1-base plate;2-outer protective film;3-decorative film;4-face curing layer;5-inner protective film;6-back curing layer. DETAILED DESCRIPTION

[0015] The specific embodiment of the utility model is further detailed in combination with the drawings.

[0016] A kind of film-coated color-coated plate based on EB curing, including substrate 1, back paint layer being arranged in substrate 1 one side and topcoat layer being arranged in substrate 1 other side, wherein back paint layer is the side towards working equipment, when installing, substrate 1 will be installed on equipment by rivet, bolt or buckle etc.

[0017] Substrate 1 material is metal, metal selects galvanization zinc or hot-dip galvanized steel plate, steel plate needs to be first unwound and then cleaned to remove the surface dirt of steel coil when producing.

[0018] Topcoat layer is outer protective film 2, decorative film 3 and face curing layer 4 in turn from outside to substrate 1 along thickness direction, face curing layer 4 is EB curing adhesive, EB curing agent needs to be cured using EB curing equipment, when being cured using EB curing equipment, no VOC emission is friendly to environment, can effectively reduce pollution to environment in production, and the time of EB curing is shorter, can greatly improve production line speed, with higher production efficiency.

[0019] Curing electron beam energy is 120-200keV, curing electron beam energy can be cured simultaneously to topcoat layer and back paint layer, reduce curing times, simultaneously, this energy value will not cause damage to decorative film 3.

[0020] The wet film thickness of the front curing layer 4 is 32-38 mu m, the back paint layer is sequentially provided with the inner protective film 5 and the back curing layer 6 from the working equipment to the substrate 1 along the thickness direction, and the wet film thickness of the back curing layer 6 is 14-18 mu m, so that the curing can be better performed.

[0021] The protective film is a PE protective film, which is used for protecting the decorative film 3 and preventing the decorative film 3 from being damaged during transportation, and the decorative film 3 is a PVC film or a PET film, which can provide different patterns for the substrate 1, so that the color coated plate can have different formats and colors.

[0022] In the production, galvanized or hot-dip galvanized steel coils are firstly selected, and after the steel coil is unwound, the steel coil is rinsed and soaked with alkali solution to remove oil stains on the surface of the steel coil, then EB curing adhesive or EB curing primer layer is coated on the front roller, the wet film thickness is 33-37 mu m, at the same time, EB curing back paint is coated on the back roller, the wet film thickness is 15-17 mu m, then PVC decorative film 3 or PET decorative film 3 is attached on the EB curing adhesive or EB curing primer layer on the front surface;

[0023] After the front surface is attached with the PVC decorative film 3 or the PET decorative film 3, the EB curing equipment is entered for curing, the electron beam energy is 120-200 keV, so that the EB curing adhesive or EB curing primer layer on the front surface and the EB curing back paint on the back surface can be cured at the same time, and after curing, PE protective film is synchronously attached on the front surface and the back surface.

[0024] In the roller coating color plate process production line, EB curing is combined, EB curing adhesive is used, no VOC emission is friendly to the environment, the pollution to the environment in the production process is effectively reduced, the EB curing time is short, the production line speed can be greatly improved, so that the production efficiency is higher, the heating and cooling process is removed, the expansion and shrinkage of the decorative film 3 during film covering is avoided, and a more smooth plate surface effect can be obtained.

Claims

1. A coated color-coated steel sheet based on EB curing, comprising a substrate (1), a back coating layer, and a top coating layer, wherein the back coating layer is disposed on the side of the substrate (1) closest to the working equipment, and the top coating layer is disposed on the side of the substrate (1) closest to the external environment, characterized in that, The topcoat layer consists of an outer protective film (2), a decorative film (3), and a surface curing layer (4) along the thickness direction from the outside to the substrate (1). The surface curing layer (4) is EB curing adhesive. The backcoat layer consists of an inner protective film (5) and a back curing layer (6) along the thickness direction from the working equipment to the substrate (1).

2. The coated color-coated steel sheet based on EB curing according to claim 1, characterized in that: The inner protective film (5) and the outer protective film (2) are both PE protective films, and the decorative film (3) is a PVC film or a PET film.

3. The coated color-coated steel sheet based on EB curing according to claim 1, characterized in that: The wet film thickness of the surface curing layer (4) is 32-38 μm, and the wet film thickness of the back curing layer (6) is 14-18 μm.

4. A coated color-coated steel sheet based on EB curing according to claim 3, characterized in that: The curing electron beam energy of the surface curing layer (4) and the back coating layer is 120-200keV.

5. A coated color-coated steel sheet based on EB curing according to claim 4, characterized in that: The substrate (1) is made of metal.

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