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DongGuan Risingsun Paper Co., Ltd, specializes in production and sales of high-end gray chipboard paper between 250g to 3500g. Smooth surface, good stiffness, no deformation, zero separated layer, strong bending resistance are some of the salient features of our papers. Low price while at high grade. They are equal to imported dear papers, and a truly recommended ideal choice for packaging paper co***nies. All Risingsun Grey Paper have to pass strict inspections of physical indexes, according to its features, brands, packing requirements, etc.A: Size.
Size is the first index for measuring quality. Length and width for sheetpaper, while width only for roll paper. Using mm in unit. Size deviation is allowed no more than ¡À 3mm. Besides, size-writing is very important. Papers have lines coming out the the paper machine. The line is paralled with later dimension figure. For example, 787*1092 means the line is paralled with the size 1092, and 700*940 the line is paralled with 940.
B: Quantification.
Quantification means measuring the weight per©O paper£¬using g/©O in unit. Quantification deviation is allowed between + 3% and - 5% for single, duplex, composite grey paper. Such as, 600g means that the quantity between 570g and 618g is qualified. Otherwise, it¡¯s disqualified.
C: Thickness.
Thickness refers to the paper depth while the surfaces are under press on both sides by a certain pressure( usually, the pressure is ¡À0.1kg ), using mm or ¦Ìm in unit.The thickness of single, duplex, composite grey paper is 0.155mm ~ 0.16mm per 100g. For instance, 0.93mm ~ 0.96mm is the right thickness for 600g paper
D: Water percentage
It means the fiber moisture in board paper, using % in unit. According to the chinese GB standard (shorted for Guobiao), 250g~750g single(double) grey chipboard have moisture 7%~9%. 8%~14% moisture for composite double grey paper and composite black on white chipboard. 8%~12% moisture for composite grey paper and composite black on white chipboard.
E: Skewness
Skewness,called square
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| Company: |
Dongguan Risingsun Paper Co.,LTD
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| Contact: |
Ms. Angelia Chan |
| Address: |
Dayouyuan industrial area,Dalang county |
| Postcode: |
523796 |
| Tel: |
86-769-82826651 |
| Fax: |
86-769-82826652 |
| E-mail: |
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