subject: Corrugated Printing Problems Have Root Causes (2) - Corrugated, Paperboard, Printing - The Printing [print this page] After the last article on Print Many aspects of the quality of the analysis, the paper printed according to experienced workers in the years of work concluded, on the following issues encountered in printing some of Reasons:
Ink Insufficient, due to ink pump too slow or does not work, ink Loumo, roller or Rubber Roll Bearing Or abnormal drive, roller and rubber roller gap is too small, anilox roller and roller printing roller gap is too big or not in place.
Printing color too light, too low due to ink viscosity, roller part of the network congestion points, plates aging, roller and rubber roller gap is too small.
Dirty or ink printing surface connection between points is due to traces of water on the plate, debris;
Corrugated paper Board have dry piece of paper or glue hair piece;
Plate outlets Make Inadvertently caused by network connection or design; ink viscosity is too high; anilox roller and the printing roll gap is too small;
Anilox roller and rubber roller gap too big;
More than two-color overprint after the printing plate when no marks part of the pressure in the corrugated Cardboard Surface; ink is not dry; plate roll in India there is no tense or degumming tilt plate; use a scraper device printing.
Blot uneven, is due to dirty plates; roller part of the network congestion points; roller or rubber roller (blade) of wear, damage;
Anilox roller and rubber roller (blade) between a debris; printed or embossed roller roller surface is not smooth; into the paper roll wear, some corrugated crush;
Plates were different. Ink from the foam, is due to ink Cycle Too many times; ink need to be adjusted.
Imprinted holes or fish eye hole is the result of too much ink bubble, corrugated surface roughness difference (tissues), plates with holes, defoamers too.
Washboard-like Western blot, is due to the low weight corrugated cardboard tissue paper; poor control of corrugated board to pull the piece;
Plate hardness is low; into the roller gap is too small, corrugated been crushing; embossing roller and the printing roll gap is too small. Halo is due to the high ink viscosity;
Anilox roller and the printing roll gap is too small;
Not meet the demand line, prone to halo of gray is different, according to the law summed up the situation roller is designed to avoid as much as possible when the plate.
Tilt printing (printing or writing patterns relative to the location of the entire board tilt), is due to feed tilt;
Pull the paper round (non-vacuum transfer) gap is not set up; corrugated board warpage serious; plates both ends of the clause and not fitted with pressure (and the board must contact).
Ink blot on the missing gaps, is due to roll on the installation in the Indian plate is not smooth; plate is damaged; printed version of the dry ink layer; board surface level; ink drying too quickly.
Fill gaps between the individual ink blot, not because of plate cleaned; ink soluble complex is poor, adjust the ink, it is recommended to use high concentrations of low viscosity of the ink color; anilox roller and the printing roll gap is too small; ink drying too fast dirty plates; gap Department has ink Tim died; plate hardness is small; ink in particle agglomeration.
Imprinting is not clean, is due to slow drying ink; pull the paper round a bad position.
Trapping sets of poor quality, mainly due to poor trapping was not fully dried ink overprinting caused, which is water-based ink print the weaknesses, you can do to improve the performance of ink are improved. Such as the preparation of resin with a fast drying ink or ink to add drying agent; color sequence from shallow to deep, from low to high viscosity ink, ink PH value from low to high to arrangements; press the appropriate speed reduction; have conditions can be stacked due to the printing unit interval of color longer; on the running board to IR Line dry or hair.
Uneven ink coverage is not as smooth corrugated surface; into the paper roll wear, crushing both ends of the corrugated board;
Roller part of the network congestion points; rubber roller surface is not smooth; anilox roller and rubber roller is not parallel;
Roller in the printing roller is not parallel with India. Ink color density and brightness non-standard, is due to a problem when the ink preparation;
Ink viscosity unreasonable; Different speed and sampling; anilox roller and rubber roller gap and sampling different; cardboard tissue paper color change; use the printing press are different;
Plate change. Crushing the corrugated printing, paper feed roller gap is due to too small;
Embossing roller and the printing roll gap is too small;
Compressive strength of corrugated board level is too low; plate hardness.
Overprint not allowed, not because of plate in proportion retractable design; plate layout is not accurate; plate in the press is not taut; plate is not installed at both ends of layering (and cardboard must be contacted);
Corrugated board warpage; Pull roller gap settings location or improper;
India old and new liner roll on the plate caused by the tensile different; press the print rollers of different diameters.
Distorted handwriting or printing images (print or image distortion caused writing does not meet the printing requirements), is not allowed as plate layout, printed version of the double-sided adhesive paste does not work.
Printed writing profile fuzzy, fuzzy imprinting is the result of anilox roller and printing anilox roll gap is too small will make contact with Indian plate with the printed version will change the upper extrusion, printing, font or color blocks on the performance of the upper part ghosting;
Embossing roller and the printing roll gap is too small will stretch over plates, lower plate deformation, printing performance for the font or color block top with ghosting;
Corrugated board when the printing press in the transmission jitter, resulting in printed writing profile fuzzy;
Board warpage, not with the hard copy printed version of a smooth contact; press the vibrations, equipment operation is not balanced. All die in the processing of products easily.
[Keywords]: Corrugated Cardboard Print Comment Large In Small Recommend Print
