The bleaching process gives SBS its signature white color, both inside and out. The remaining 80 percent must be composed of freshly-harvested woodchips that are chemically processed and bleached. In order to be considered SBS, the finished product contains no more than 20 percent recycled materials. Solid Bleached Sulfate (SBS)īleached paperboard or solid bleached sulfate (SBS) is a premium paperboard grade that is white in color. Multiply each pound of cover paper by 2.708. Multiply each pound of text paper by 1.48.ġ lb. Typically used to describe card paper.ġlb. GSM (grams per square meter) is the metric system’s universal measure for paper weight and can be converted into lb. It is usually 157gsm or 200gsm art paper. CoverĬover is a thicker classification of paper most commonly used for book covers, measured in points (noted pt.) and sometimes in pounds (noted lb.). It is usually 128gsm, or 157gsm art paper. Text paper is widely used the booklet printing, manual printing, catalogue printing. Text stocks are usually measured in pounds (noted lb. Text is a classification of paper most commonly used for the interiors of books. The art paper is also called coated paper.Ĭonversion between gsm, pound, cover lb, text lb. Such papers are used to make the luxury printed paper boxes and cosmetic paper boxes. Ivory paperboard in China usually refers to the SBS C1S. C2S means that both sides of the paperboard are coated. C1S means that the paper is coated on only one side of the paperboard. The SBS C1S, C2S is also referred to ivory board or art paper in China. The woodfree paper is also referred to as the offset paper. The duplex board with white back is also referred to as the white lined chipboard with white back. The duplex board with grey back is also referred to as the while lined chipboard with greyback, clay coated new back(CCNB). The 60pt chipboard in USA refers to the 1.5mm greyboard in China, which is very ideal for the small rigid paper boxes. The formulas below can be used for the conversion of the 2 units.įor example, 60pt=60*0.0254mm=1.524mm. In China, the thickness of the paperboard is measured in millimeters, while point is used in USA, which is abbreviated to pt. Paperboard Thickness and Grammage Conversion Table The CCNB paperboard is white color outside and grey color inside. It is used to make the kraft paper box and corrugated printed box. The kraft paperboard is kraft brown color inside and outside. The CUK, also referred to as SUS, is white color outside and kraft brown color inside, which is widely used for the beer carriers, beer cartons, beverage paper boxes. The SBS paperboard is white color inside and outside, which is widely used for the cosmetic paper boxes. For the custom paper box, the paper printed box is usually made of 4 kinds of paperboards.
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