Whiteboard and manufacturing process thereof
A production process and technology for whiteboards, applied in the directions of lamination auxiliary operations, reusable writing boards, polyurea/polyurethane adhesives, etc. Achieving the effect of good repeated writing and wiping, easy inking and low production cost
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Embodiment 1
[0036] A kind of manufacture craft of whiteboard, it is characterized in that: comprise the steps:
[0037] (1) Take a wooden board, apply a layer of glue on one side of the wooden board, and then stick the iron sheet;
[0038] (2) Pressing the plank and the iron sheet for 4d with a pressure of 5 kilograms of force to obtain a bonded board;
[0039] (3) The bonded board is edge-sealed with hot melt adhesive, and then fixed with a frame to obtain a whiteboard;
[0040] In the step (3), the outer surface of the iron sheet is coated with a layer of easy-erasable paint, and the easy-erasable paint is made of the following raw materials in parts by weight: 30 parts of water-based acrylic resin, 5 parts of water-based amino resin, alkyd 5 parts of resin, 10 parts of titanium dioxide, 1 part of ammonium p-toluenesulfonate, 0.5 parts of film-forming aids, 0.5 parts of leveling agent, 0.5 parts of wetting agent, 0.5 parts of defoamer and 20 parts of deionized water.
[0041] The film...
Embodiment 2
[0051] A kind of manufacture craft of whiteboard, it is characterized in that: comprise the steps:
[0052] (1) Take a wooden board, apply a layer of glue on one side of the wooden board, and then stick the iron sheet;
[0053] (2) Pressing the plank and the iron sheet for 3.5 days with a pressure of 8 kgf to obtain a bonded board;
[0054] (3) The bonded board is edge-sealed with hot melt adhesive, and then fixed with a frame to obtain a whiteboard;
[0055] In the step (3), the outer surface of the iron sheet is coated with a layer of easy-erasable paint, and the easy-erasable paint is made of the following raw materials in parts by weight: 35 parts of water-based acrylic resin, 8 parts of water-based amino resin, alkyd 8 parts of resin, 12 parts of titanium dioxide, 1.2 parts of ammonium p-toluenesulfonate, 0.8 parts of film-forming aid, 0.8 part of leveling agent, 0.8 part of wetting agent, 0.8 part of defoamer and 25 parts of deionized water.
[0056] The film-forming a...
Embodiment 3
[0066] A kind of manufacture craft of whiteboard, it is characterized in that: comprise the steps:
[0067] (1) Take a wooden board, apply a layer of glue on one side of the wooden board, and then stick the iron sheet;
[0068] (2) Press the plank and the iron sheet for 3d with a pressure of 10 kgf to obtain a bonded board;
[0069] (3) The bonded board is edge-sealed with hot melt adhesive, and then fixed with a frame to obtain a whiteboard;
[0070] In the step (3), the outer surface of the iron sheet is coated with a layer of easy-erasable paint, and the easy-erasable paint is made of the following raw materials in parts by weight: 40 parts of water-based acrylic resin, 10 parts of water-based amino resin, alkyd 10 parts of resin, 15 parts of titanium dioxide, 1.5 parts of amine p-toluenesulfonate, 1 part of film-forming aid, 1 part of leveling agent, 1 part of wetting agent, 1 part of defoamer and 30 parts of deionized water.
[0071] The film-forming aid is a mixture of...
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