Phase 1: Expansion file for mixing cardboard kraft paper

The first expansion file is compliant the processing technology is advanced. Usually, cardboard kraft paper are used for pasting, just for the convenience of file storage. During this period, there were many problems with expanding files, such as large scale, incomplete management, inadequate archive preservation.

Cardboard kraft paper mixed file box: uneven soil yellow, large color deviation, rough surface

Phase 2: Acid free paper expanding file

Afterwards, the expansion file development entered the second stage, which is the acid free paper expansion file.

The acid content of the paper used in the archive data box is a lifespan indicator, while acid free paper refers to usage. Paper with a pH value of 7.0 higher can be used for nearly 200 years.

Acid free expanding file: uniform color, light color, smooth paper surface. Compared to the early expansion files of kraft paper, it is fading, does spoil, is resistant to mold insects. Therefore, it can better carry out archive storage, ensure the archiving scientific classification of archives, achieve division of labor optimization.

So why don't you need an Expanding file? Although plastic expanding files are more convenient than paper materials, are clean, wear-resistant, moisture-resistant, they are suitable for long-term storage due to the aging brittleness of plastic. Therefore, archive rooms often use acid free paper expanding files.

Archives are records of a certain event person's experience process, which are for the convenience of later viewing. The storage period is generally more than ten years, so it is necessary to strengthen its storage work. Currently, there are many difficulties in the storage of archives, such as paper aging, blurred handwriting, file pests, etc., which have damaged many important archives. Acid free paper expanding files solve this problem, they can be stored for a long time without mold deterioration, It can also prevent insect pests, which is also the type of expanding file promoted used by the National Archives Administration.

But if you only use it for storing office supplies, documents, paper on a regular basis, you can choose a plastic expanding file, which is convenient, fast, economical. Feel free to contact us if you need an expanding file!