Banner

行业知识

Acid-free paper file box printing process

The file box is a tool for packing and binding storage documents by various agencies and unit file management departments. It is usually made from cardboard and kraft paper, and is now basically made of acid-free paper. The kraft paper file box is a type of file box commonly used in file binding processing.

The kraft paper archive box is divided into: acid-free paper archive box and imported paper archive box. The acid-free paper archive box is the type of archive box that is implemented by China Archives Bureau. Because it does not contain acid, it has anti-insect and anti-mildew properties on the file. The long-term preservation of the archives is relatively good. The commonly used acid-free paper archive boxes are made of 680 grams. The imported kraft paper archive boxes are made of American (Russian) imported kraft paper, because the imported paper is made of pure wood pulp. The paper of the imported paper archive box is firmer and has outstanding toughness, and it is better to save the file together.

The acid-free paper archive box is a file box made of paper with a pH between 7.0 and 8.5. The acid value of the pH is below 7.0. The newspaper you read every day is made of acid paper. If you can carefully save it, the newspaper will probably last for 20 years, but if you expose the newspaper to In daylight and air, then it may only be kept for a few weeks.

The acid-free paper file box printing is made of acid-free paper. The acid-free paper is a kind of acid-free and non-corrosive material, which can make the file long-term preservation, no change, no fading, and has the characteristics of insect proof and mildew proof. There is no corrosion damage to the saved documents, so the product has been loved by users. At present, the domestic file box printing manufacturers are replacing the old and crude cardboard boxes and kraft paper boxes with acid-free paper files. The boxes can be divided into dozens of categories, which are widely applied to the equipments of various agencies and unit file management departments to pack and bind the stored documents.

Acid-free paper file box printing is a file box made of acid-free paper paste. Acid-free paper is acid-free and uses advanced AKD neutral sizing process and acid-free corrosion, so that files can be stored for a long time without fading. It has the characteristics of insect proof and mildew proof, and it has no corrosion and damage to the archives bound in the box. Now the country is gradually replacing the old and crude cardboard file box and kraft paper file box with the acid-free paper. There are dozens of file boxes, such as: file box, technology file box, account file box, urban construction file box, etc., which are loaded with various documents and materials.

Discrimination of authenticity: acid gypsum paper commonly used gypsum, talcum powder, kaolin as a filler, while acid-free paper uses calcium carbonate as a filler, so when a drop of dilute hydrochloric acid is placed on the outside of the file box paper, if it is made of acid-free paper The archive box, hydrochloric acid and the calcium carbonate in the paper will react with carbon dioxide gas, causing bubbles on the surface of the paper. On the contrary, if the acid sizing paper of gypsum, talcum powder and kaolin is added, it will not react with the dilute hydrochloric acid. This makes it easy to determine whether it is an acid-free archive box.