White cardboard is generally divided into: blue and white single copper plate paper, white copperplate paper, grey background copperplate paper. Is A kind of relatively thick solid white paperboard made of pure wood pulp with high quality, the calender or embossing process, it is mainly used for packaging decoration printing substrates, divided into A, B, C level 3, quantitative - in 210 400g/㎡。 Mainly used for printing hand, invitation CARDS, certificates, trademarks, packaging and decoration, etc. White board paper and coated paper, offset paper, the difference between the halftone paper is paper, degree of positive and negative heavy, paper, thick and different colors, white board paper for a grey one side white, also known as grey coated white. Kraft paper is tenacious waterproof packing paper, tan, use is very wide, often used in paper making paper bags, envelopes, homework book, album cover, file and sand paper, etc. Quantitative range is 80 grams per square metre to 120 g/m2, with web and tablet in the paper, and the single side, double side light and difference with stripes. Main quality requirements is flexible knop, burst degree is high, can bear large pulling force and pressure does not break. Kraft paper, has the very high tension, there are presented. especially, double light, stripes, no lines, etc. Mainly used for wrapping paper, envelopes, paper bags, etc, and press roller bag lining, etc. Now a lot of mobile phone manufacturer also like to do with kraft paper, mobile phone boxes of specialty paper is a special purpose, the production of small paper. Is a wide range of specialty paper, all kinds of special use paper or art paper collectively, sellers will now embossing paper such as art paper referred to as the special paper. Three difference was like less. White cardboard: 200 g, double-sided white for mid-range wrapper classes. Kraft paper: 60 200 g, is used for packing. The cartons. Envelope. File cover. The envelope. Specialty paper: general with common entrance paper, it is mainly used for cover. Decorations. Arts and crafts. Fine for printing.
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