Printing Paper and Printing Quality--Specifications of Paper

<br> <br> paper specifications including the weight of the paper size and paper size paper.

1. Paper Size The print paper size is divided into two types, lithographic paper and web.

The format size of the lithographic paper is: 800mm × 1230mm, 850mm × 1168mm, 787mm × 1092mm. Paper format allows deviation of ± 3mm. Paper that meets the above specifications is either full or full. 880mm×1230mm is the international standard size of A series.

The length of the web is generally a roll of 6000m, and the width dimension is 1575mm, 1562mm, 880mm. 850mm, 1092mm787mm and so on. The allowable deviation of web width is ±3mmm.

2. Weight of paper The weight of paper is expressed in terms of weight and weight.

Quantitative is the weight of paper per unit area in g/m2, ie grammage per square meter. The commonly used paper basis weight is 50g/m2, 60g/m2, 70g/m2, 80g/m2, 100g/m2, 120g/m2, 150g/m2 and so on. The larger the quantification, the thicker the paper. The basis weight is 250g/m2, the following is paper, and more than 250g/m2 is cardboard.

The total weight of paper for each order, in kilograms. 1 Order 500 sheets, each size is the standard size, ie full sheet or full sheet.

According to the paper's weight and size, the following formula can be used to calculate the weight.

Ream weight (kg) = width of the paper (m2) × 500 × grammage (g/m2) ÷ 1000