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Jieshen Paper Industry teaches you how to print kraft paper better

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Update time : 2019-01-03 10:05:41
As we all know, kraft paper has high strength, strong wear resistance and moisture-proof characteristics, so in life and production, whether packaging bags, document bags, envelope bags or some food packaging are able to see the shape of kraft paper. Many commodities will be packaged in kraft paper for printing, so how can kraft paper be printed better? The following is the introduction of Jieshen Paper Industry:

When kraft paper is used as packaging, it is inseparable from the process of design and printing. In the process of printing, excessive moisture content in kraft paper will affect the final printing effect. Because the raw materials of kraft paper are plant fibers and other fillers, the vertical expansion ratio is smaller while the horizontal expansion ratio is larger, up to 0.3 mm, which directly affects the final printing effect.

In the process of kraft paper storage, more contact between the four sides and the air will lead to less moisture on the four sides and larger moisture content in the middle paper. The moisture content of kraft paper in this storage time factory is not uniform, which will lead to the appearance of "lotus leaf edge", and once the word problem occurs, it will make the image and text printed in the printing process can not be consistent with the printing plate, resulting in inaccurate overprint.

Therefore, before printing, we need to pretreat kraft paper. First of all, the ragged and uneven surface of the paper must be removed and can not be used. The temperature and humidity of kraft paper storage space should be consistent with the printing workshop, so as to prevent the phenomenon of uneven water volume upside down during printing. In addition, kraft paper can be packaged and stored when it is produced, and removed one or two days in advance when printing is needed, so as to avoid excessive exposure time leading to water loss.

The above is the specific content of Jieshen Paper Industry to introduce to you, I hope to help you.
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