Manila board, commonly known as the whiteboard, the blues, grey, white, ash is copper.
The base of color is gray, the front, the white coating surface, mainly used in printing and packaging.
Due to the material and different thickness of coating surface, grey, white board is divided into multiple levels, common grade for class A, B, C, E, F, from passive, high F the worst, also called light without coated paper or coated paper.
Grey, white board with tons of units, each level is divided into multiple g, respectively is divided into 200 grams, 230 grams, 250 grams, 270 grams, 300 grams, 350 grams, 400 grams, 450 grams.
The gram here represent/grams per square metre.
how to control the quality problem of the composite board paper
the whiteboard paper bending, large amount of glue, environment relative humidity, the surface of the paper and the paper containing the tide, are the cause of
white board paper bending uneven.
If you want to put an end to this problem, we check by cutting figure silk flow direction is correct, right to adjust the size of the amount of glue, to ensure that the coating width control stare blankly at the top 1/3 of the width, environment relative humidity control under 65 rh % as far as possible, and make sure the surface of the base paper is flat and level.
We want to ensure that the thickness of white board paper will strictly control the amount of whiteboard paper coating, appropriate control of the pressure of the press, and improve the level of white board.
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