Printing line edge defect

(1) change the new glue head after processing, due to the surface of the new rubber head mold is high, the ink is very difficult to move on plastic surface
On.Should use gasoline cleansing gel, and soak gas soft cloth on half an hour.But the operation must be careful, don't damage the rubber head.
(2) the ink viscosity is too big, made from the gravure ink transfer of rubber head bad performance.Should add a moderate amount of solvent, dilute ink.
(3) the solvent dry too fast.Should join the slow dry solvents or adjust the inking device, shortening residence time in the gravure ink.
(4) rubber head rising speed too slow, the transfer of ink performance degradation.Should adjust the glue head is rising faster.
(5) rubber head end curve is too flat.Should switch to face glue head curve is pointed.
(6) in the gravure printing ink coating is not sufficient.Check and adjust the ink coated plate installation location.
(7) gravure too deep, causing the ink drying too slowly.Should use the fast dry solvents or switch to a shallow some gravure.
(8) rubber head surface fatigue hardening.A rubber head should be replaced.Midway through the printing need to unload in plastic head, should be written on the fixed plate
Number, otherwise, the change of the rubber head position, can make the printing is not stable.In addition, after the stop of the pad printing machine pressure drop, otherwise the rubber head
Fall, is likely to hit the workpiece or pages damage plastic head, hit a glue head surface, indentation

Hollow text on the ink

(1) rubber head end curve is too sharp.With face curve is relatively flat rubber head should be replaced.
(2) the glue head is too small, cause gum head slip on the page.With large size rubber head should be replaced.
(3) gravure use time is too long, text edge contact with ink scraper tip wear parts wear or gravure edges.Should switch to the new

Online printing ink printing

(1) ink scraper to scrape ink.Should be appropriately increase the pressure of scraper.If the scraper has worn to a certain extent, should be
Change in time.In the process of operation, the use of ink scraper should pay attention to the following:
If (1) using the new ink scraper, can use 150 * sandpaper or sharpening stone grinding, make the blade end slightly into the circular arc form;Otherwise, the front edge
, the blade on the end of caving stab fly with in the gravure printing ink or intrusion, and lead to produce printing defects.
(2) on the blade pressure as far as possible little some advisable, which can prolong the life of gravure and scraper, and the printing effect is better.
(3) in the big piece face or use ceramic printing ink scraper, scraper holder should spare fine-tuning type, in order to facilitate the adjustment of the blade.
(4) after downtime, should put the ink wash and should be coated with a layer of anti-rust oil on the blade.
(2) the rubber head down too much.Should switch to end curve flattens rubber head or material soft rubber head

Printing surface of filaments

Ink viscosity is too high.Should add solvent dilution or switch to slow drying, solvent.In the process of operation, for the use of ink and
Storage should be paid attention to the following questions:
(1) the new ink after opening, if the paint is YouLiZhuang, should fully mixing.Ink after opening should be finished as soon as possible.
(2) when operating environmental conditions or printing speed change, should be properly adjust the amount of the solvent, or switch to a different drying performance
Ink or solvents.
(3) in the printing process, because the ink plate solvents are volatile, should be timely downtime added solvent, and fully stir well.
(4) because of the dust in the air and glue on the adhesion of impurities are mixed in the ink, therefore, ink plate printing ink
Continue to use should be replaced after a week.
(5) the printing ink after sealing, avoid should be stored in ventilated place