board.com/products' target='_blank'>gray cardboard board is a kind of high intensity, mainly by mechanical ultra-high pressure, increase the board laminating and tightness, increase density, hardness and random amplification.
Super and stiffness of the whole gray paper, not easy buckling deformation, due to the gray paper after ultra-high pressure, its raw material and production cost will increase accordingly, quantitative and thickness will produce certain change, suitable for high-grade packaging, painting materials, puzzles, samples, hardcover cover, etc.
All the surface of gray paper and double gray cardboard difference is not big, mainly lies in the inner core, can be cutting section to the difference, double gray cardboard cut the middle part is yellow, have off color, and the cut surface of the whole gray paper color is consistent inside and outside.
Due to using the raw materials are all imported waste paper, paper fiber is longer, after manufacture paper with pulp, its tensile strength and tear strength enhanced obviously, the product is both toughness and has very good hardness.
All gray paper compared with other hard cardboard with light weight, economy and environmental protection, easy cutting, compared with general board, its relative intensity is much higher, because this product is long, thin paper fiber, it has high hardness, and have good folding resistance, use it to make products, beautiful and easy, affordable.
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NEW BAMBOO PAPER (HK) CO., Ltd has been making a name for itself as a producer of some of the finest in the China, and it has been singing its praises for some time.