Tips for preventing and solving unclean ink on degradable pharmaceutical packaging film
Introduction to techniques for preventing and solving unclean ink in degradable pharmaceutical packaging film:
Control the amount of ink used for degradable pharmaceutical packaging film, minimize the generation of old ink, and at the same time wrap and store the old ink in the correct way; mix the old ink into use in batches and protect the ink well.
Measure the viscosity of the ink for degradable pharmaceutical packaging film in a timely manner and keep it within the proper range.
For degradable pharmaceutical packaging film, select the correct solvent mixing ratio, and do not let water get into the solvent; protect the solvent well.
Which printing technique is commonly used for cellophane pharmaceutical packaging film:
Since cellophane pharmaceutical packaging film is a non-polar material with no pores, the ink also does not dry easily; all of these characteristics are unfavorable for printing, so the plastic film must be surface-treated before printing.
During printing, cellophane pharmaceutical packaging film is affected by tension; within the range allowed by its strength, greater tension also increases the elongation rate, which also brings certain difficulties to the registration accuracy of color printing.
For cellophane pharmaceutical packaging film made with added additives, the additives seep out very easily during printing, forming a layer of oily substance, ink layer, coating and so on on the surface of the film.
Introduction to the standards for using different printing plates for degradable pharmaceutical packaging film:
The printing plate for degradable pharmaceutical packaging film must have a certain hardness. Depending on the printing process, the required surface hardness of the plate also differs.
The printing plate for printing degradable pharmaceutical packaging film has a surface Shore hardness of
The printing plate for degradable pharmaceutical packaging film should be even at the four corners and uniform in thickness, and the relief depth of the plate surface should be
approximately that value, and fine text and small gaps should have a certain depth.
The printing plate for degradable pharmaceutical packaging film should have accurate graphic and text dimensions and specifications, correct color separation plates, and flat feet in the recessed parts.
This article is reprinted from China Packaging Network (pack.cn). Original link: http://news.pack.cn/show-379031.html. All rights belong to the original author; this article is for industry exchange and learning only.
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