Analysis of Causes of Bubbles in Screen Printing

There are various reasons for the appearance of bubbles (wink) in screen printing, but the main focus is on the rubber head and steel chess.

Three aspects of ink. Here are some of the most likely causes of bubbles (eye blinking):

(1) The shape of the plastic head is not suitable, and it is not flat or curved.

(2) The center point (highest point) of the rubber head is printed on the pattern to form air bubbles and generate bubbles.

(3) Adhesive sticking, damage, and oil stains cause poor printheads.

(4) The steel plate is etched too deeply. Due to the thick oil layer, the rubber head oil is not completely affected by the ink stress.

(5) The steel plate is etched too shallow and the oil layer is not thick enough.

(6) The ink is too thin or too slow to dry.

(7) The ink is too dry or too dry.

(8) The scraper applies a pattern treatment ink to the scraping part of the steel plate.

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