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210/m2 up PAPER ,width 1240-1270,diameter of paper roll 1100-1900, the thickness of paper,0.26-0.36mm, color grey. packing:export pack
THE TECHNIQUE STANDARD (NORM) FOR GYPSUM BOARD PAPER
1. weight and width
We can make the paper weight from 180gsm/mt2 to 210gsm/mt2. Par t of weight and width of our productions are as follows.
1.> For 180gsm / mt2
The width of the face paper is 1180-1200, in grey or brown color.
The Width of the back paper is 1245-1270
2>.For 190gsm/mt2
The width of the back paper is 1245-1270, in white color’
3> For 200gsm/mt2
The width of paper is 1180-1270, in grey, in brown or white color
2.thickness – 0.26-0.36mm
3.ventilate - ≥1.3 um/pa.s
4.water absorbtion - the front side of paper 18-35g/m
the behind of paper 18-70g/m
5.The tensil strength
For Grade AAA
1> The face paperi
a> longitude tensil strength – 9.3
b> b>horizontal tensil strength -3.3
2> The back paper
a> longitude tensil strength – 10
b> b>horizontal tensil strength – 3.3
For Grade AA
1> The face paperi
a> longitude tensil strength – 7.3
b> b>horizontal tensil strength – 3.2
2> The back paper
a>longitude tensil strength – 8.6
b>horizontal tensil strength -3.0
For Grade A
1> The face paperi
a> longitude tensil strength –6.6
b> b>horizontal tensil strength –2.3
2> The back paper
a>longitude tensil strength – 6.6
b>horizontal tensil strength – 2.3
7.horizontal swell in mositure - ≤2.5 %
For grade AAA ≤2.5%
For grade AA ≤2.8%
For grade AA ≤3%
8.water content - 9-13%
Paper reel is free from damage, distortion, or noticeable indents
The paper reel production label should be sticking at reel-end.
It should includes production date and lot-number, reel number, reel weight, paper stretch direction and paper slurry touching-side, paper basic weight and width.
The paper surface should be free from scratch, indents, wave, edge split or damage. The wax spot should be less than 3mm , and no more than 2 spots within 4 meters strentched length.
gypsum board paper 210g/m2