Lightweight offset paper performance profile

Lightweight paper, ie, lighter offset paper, is a more humanized type of paper. It is a rookie in paper products. It is light weight, inexpensive, does not contain fluorescent brighteners, high mechanical pulp content, and is environmentally friendly. The original color tone used can protect the eyes of the readers, especially the elderly and children, so that they can protect their eyesight from damage during reading, and they are easy for the reader to carry and read. They have natural features. Lightweight paper has good texture and bulkiness, high opacity, good printing adaptability, and good reproducibility of printed manuscripts. The texture is good and light and thick. The weight of printed books is reduced by about four percent compared to the weight of books printed on plain paper. One-third to one-third facilitated the readers and saved shipping and mail-order fees.

Compared with offset paper, “light paper” has a bulk density of 1.90cm3/g and a bulkhead thickness of 1.14cm3/g. Therefore, it is possible to replace “highlight weight” with “lightweight paper” with low weight when printing. Double sticker paper. Take 80g/m2 offset paper as an example:

The thickness of the offset paper is 80g/m2*1.14cm3/g=91.2μm. The weight of "light paper" at the same thickness is 91.21μm÷1.9cm3/g=48g/m2 which corresponds to 50g/m2 of "light paper". Quantification is 50g/m2, bulkiness is 1.9cm3/g of "light paper" with a basis weight of 80g/m2, looseness is

1.14cm3/g of the same thickness of the offset paper.

If “light paper” is calculated at 8,000 yuan/ton, it is equivalent to high-grade offset paper 8000×(1.14/1.90)=4800 yuan/ton. The printing area of ​​1 ton of 50g/m2 "light paper" is equivalent to the printing area of ​​1.6 ton 80g/m2 offset paper.

Market advantages of "light paper"

(1) Domestic "light paper" is cheaper than imported paper of the same type. Only about 65% of the import price.

(2) The “light paper” has a very smooth paper surface and a soft touch. When used in books and periodicals, the appearance, reading, use, and storage of the paper can achieve ideal results.

(3) The paper color of "light paper" conforms to the environmental protection trend that the international whiteness of paper is not higher than 84 degrees. The original color tone can protect the eyes of humans, especially children and the elderly, and make them more comfortable in reading. Glare, no fatigue, no harm, have a certain effect on the protection of vision.

(4) "Light Paper" is better and cheaper than offset paper. "Light paper" has a certain amount of looseness. 60g/m2 "light paper" can be used instead of 80g/m2 offset paper to print books, which reduces the weight of the book.

(5) Since “light paper” uses neutral sizing, books printed on “light paper” are not easy to turn yellow, with good texture, light weight and thick.

Sun Paper's 23# paper-making workshop is supplied by Metso, using the world's most advanced papermaking concept and automated control system. Among them, the multi-disc white water recycling machine, Man Turbo pump, dilution water head box, straight-through double-shoe pressure, belt calender and other major equipment are all the most advanced international equipments, especially belt calenders, which have opened up in culture. A precedent cited by paper projects. The physical indexes such as thickness, looseness and stiffness of the paper are improved, which greatly improves the quality and grade of the product, and reduces energy consumption and waste. The main equipments of the workshop were imported into Spain, Germany and Japan. The equipment and automation also reached the international advanced level.

1. Through the exploration and research of R&D personnel, the top net of No.23 machine was designed and improved. The use of six HIYRUNs in the new headbox and the front drying department made full preparation for the future speed increase. The press section adopts the straight-through double boots pressure, and the two press bottom rolls adopt the Sym controllable middle-high roll, theoretically improving the damage of the high-line pressure to the press roll bearings.

2, the use of steel belt calender, increased the paper's bulk, saving raw materials. In the case of quantifying the amount of paper or achieving the same thickness, the quality of the double-glue paper produced by the 23# machine is higher than that of competitors, which brings a competitive advantage to sales.

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