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commonly referred to as "yellowing." Yellowing is one of the characteristics of aging a4 paper. (Five) a4 paper variant of. a4 paper produced in wet

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y of the air is greater than 30%, as the humidity increases, the tensile strength a4 paper is reduced. 2. Folding. The so-called folding refers to the

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eral, to determine the appearance of the disease is mainly paper to print or use the factors to consider, and if there is a slight illness paper, but

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Pargital printing presses, ink requirement for its large, the printing unit is required to be able to provide a large amount of ink transfer, but the

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ink is not easy to develop the history of the conjunctiva, prone to rub dirty failure. In order to improve printability, in addition to the rational u

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ameters Item Specification sample size 15 × (150 ~ 200) mm weight load mode counter bending angle from 0 to 9999 times 135 ° ± 2 ° folding speed 175 ±

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e identifiers and monosyllabic words in foreign languages, etc., should not be ranked in the bottom two rows apart. Two, a4 paper a4 paper is one of t

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h there is no reflection of the strong white light in the snow, but for a long time to when the white paper will also produce visual fatigue, causing

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to 40 extension. Preliminary estimates, the end of this century, the world, back the amount of waste will reach 50 shape. The use of waste paper pulp

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sales price of $ 400. / ton. Monthly earnings of $ .5 evil million. American Garden mill with 100 shaped newsprint deinking of old newspapers, and wi

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air brittle, or wet for newsprint archives for this change is particularly evident. This is a light prompted many chemicals to produce results on the

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paper moisture tester, best a4 paper hygrometer introduction of foreign advanced technology uses high-frequency principle, that is, the instrument fea

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ron most significant. Hazardous metal objects above both the acid paper or neutralized paper are present. The little metal content is an ancient handm

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paper wet deformation and permanent deformation produced in the wet and dry conditions. deformability a4 paper to print adversely. Generally, a4 pape

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extend the life of the file, and is one of the tasks file protection technology. First, the file a4 paper performance (a) a4 paper's mechanical stren

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earance of the paper's disease method: check the appearance of the paper's disease, except a very few require the use of instruments, in general, are

2014-11-19