Do you know this about paper-Jinling Paper Equipment

　　my country is the country with the longest history of using paper in the world, and paper has played an important role in the development of the entire history. It has played a role in inheriting history and recording history. Up to now, the application of paper has spread to every aspect of life. So how much do you know about paper? The following China Paper Machinery Network will give a detailed introduction to some professional terms of paper.

　　Unit of paper:

　　(1). Gram: the weight of one square meter (length×width÷2)=g is the weight

　　(2). Order: 500 sheets of paper. Unit name: Order (factory specifications)

　　(3). Ton: 1 ton=1000 kg as the usual unit, used to calculate paper price.

　　There are four most common paper specifications:

　　(1). Positive degree paper: length 109.2 cm. width 78.7 cm

　　(2). Generous paper: 119.4 cm long and 88.9 cm wide

　　(3). Stickers: length 765 cm. width 535 cm

　　(4). Carbon-free paper: There are positive and generous specifications, but there are different paper prices.

　　The most common names of paper:

　　(1). Copy paper: 17g positive specifications: used for value-added tax invoices, gift packaging, generally pure white.

　　(2). Typing paper: 28g positive specifications: used for joint orders and forms, there are seven colors: white, red, yellow, blue, green, light green and purple.

　　(3) Glossy paper: 35-40g positive specifications: one side is glossy, used for joint orders, forms, memos, low-grade printing paper.

　　(4). Writing paper: 50-100g, generous and positive, used for low-end printed matter, most of which are domestic paper.

　　(5) Double offset paper: 60-180g generous. Both are positive. It is common for domestic, joint venture and import for mid-range printing.

　　(6) Newsprint: 55-60g roller paper. Positive degree paper. Newspaper selection.

　　(7). Carbon-free paper: 40-150g generous. Positive degree is available, with direct copy function, divided into upper, middle, lower paper, upper, middle and lower paper cannot be exchanged or re-used, paper prices are different, there are seven colors , Often used in joint orders. forms.

　　(8) Coated paper: A. Double copper 80-400g is positive and generous, used for high-end printing.

　　B. Single copper: used for medium and high-end printing such as cartons, cartons, hand bags, medicine boxes, etc.

　　(9) Sub-flake paper: 105-400g for elegant and high-end color printing.

　　(10). White paper with gray background: more than 200g, with gray on white background, used for packaging.

　　(11). White cardboard: 200g, double-sided white, used for mid-range packaging.

　　(12) Kraft paper: 60-200g, used for packaging, cartons, document bags, archive bags, and envelopes.

　　(13). Special paper: Imported paper is commonly used, mainly used for printing on covers, decorations, handicrafts and fine products.