How are the quality of the paperboard separated?
It is usually used with the appearance of toilet toilet paper is extremely similar, roll into a cylinder type toilet paper and a single square, the square of the leaflets and often packed in boxes or plastic packaging, above one, for each selected leaflet. This kind of extraction packaging and use method, and just the same as the most common packaging and use of facial tissue, so that both often cause confusion of users. Type K, K paper is what we often call "open" paper, only in the domestic K paper is useful. A paper is usually used to mean "K numbers" and cut into several copies. For example, eight opened paper is fully open 1/8 big (three times to cut). To select the paper size before the design, because the printing machine can only use a few sheets of paper (usually open, Ju Quankai), a printing machine and then cut into the desired size, so do not use a special specification sheet of paper printing, so as not to waste space and dissatisfaction. Such as: 8, open =27 (width, CM) x39 (long, cm). The same below) 16 open =19.5x27; 32 open =13.5x19.5; 64 open =9.5x13.5. The standard specifies the width of the paper (expressed in X) and the length (expressed in Y) as the ratio of X:Y=1:n.
Both sides have great influence on printing quality. Usually, the smoothness of the surface and the degree of sizing are better, so the printing performance is good. To make cartons of tissues, the front faces of the paper must be turned out for printing and for moisture proofing. To this end, it is necessary to identify the front and the right sides of the paper or board. Facial tissue is an extremely thin piece of paper.
I can see that no matter what kind of paper or cardboard there is a positive and negative points, in the paper, the wet paper and net contact surface is opposite, and the other side is positive. On the contrary, because of the contact with copper net, the small fiber and packing loss more, showing screen printing, so the opposite is more rough. There are obvious differences between the positive and negative aspects. The smooth, positive negative is higher, more negative than positive picking speed; white tails better than positive, therefore has two sides of paper and paperboard.
K type, K type paper that we often say that the type of paper, only in the domestic only useful K paper in accordance with the length and width of different classification: A4 specifications: 21*29.7 cm B4 specifications: 25*35.4, B5 specifications: 18.2*25.7 the size of the paper refers to the paper made after, after finishing cutting, cut to the size of. In the past, how many "open" (such as 8 open or 16 open, etc.) to represent the size of the paper, and now I use international standards, specified in A0, A1, A2, B1, B2.. And other marks to indicate the format of the paper specifications. The standard specifies the width of the paper (expressed in X) and the length (expressed in Y) as the ratio of X:Y=1:n. According to the basic area of the paper format, the format specification is divided into A series, B series and C series, format specifications for A0 size is 841mm * 1189mm, surface area of 1 square meters; the B0 size is 1000mm * 1414mm, surface area of 2.5 square meters; the C0 size is 917mm * 1279mm area, area of 2.25 square meters; the format specifications of copy paper by A and B series. If the A0 along the length of paper into two parts, will become the A1 specification, the A1 paper along the length direction of, will become the A2 specifications, so to open to the A8 specification; B8 paper also according to the method of opening to B8 specifications.
