China Gravure Flexible Packaging Standard: Process Control Draft

06/02/2026

China's new national standard for gravure flexible packaging process control: substrate printability parameters, process variables, and quality inspection framework.

Flexible Packaging Q&A: Solvent, Corona, Surface vs Reverse Print

06/02/2026

Flexible packaging Q&A: ink solvent selection criteria, corona treatment levels by film, surface vs reverse printing, retort pouch structures, and troubleshooting.

Offset, Gravure, Flexo: Three Printing Methods Compared

06/02/2026

Offset lithography, gravure, and flexography compared: substrates, print quality, cost, environmental impact, and market position. Water-based flexo, gravure quality, offset versatility.

Gravure Highlight Dot Loss: Substrate, Cylinder, and Ink Causes

06/02/2026

Gravure highlight dot loss and pinholes: substrate contamination, corona treatment, cylinder wear, impression roller hardness, ink viscosity, particle size, and press settings.

Cold Foil Registration: Label Printing Technical Solutions

06/02/2026

Cold foil registered stamping for labels: plate seam skipping, foil-to-print registration via intermittent feed, servo-driven repeat-length adjustment, why 3D anti-counterfeit foil remains limited to hot stamping.

Waterless Offset Printing: 9 Common Problems and Solutions

06/01/2026

Nine waterless offset printing problems solved: set-off, static delivery, hickies, piling, ghosting, scumming at 10K+ impressions, color matching to conventional, poor solids. Fixes included.

Spot Color Difference: Paper, Ink, Press, and Finishing Control

06/01/2026

Spot color deviation in packaging: paper whiteness/smoothness/absorption, ink particle size and viscosity, ink film thickness (0.1um=1.5-4.5 NBS), and surface finishing effects.

Gravure Tone Unevenness: Gradient, Light Area, and Cylinder Fixes

06/01/2026

Gravure tone unevenness in process work: gradient dot bridging vs light-area mottle. Causes: viscosity extremes, solvent evaporation, rough cylinder surface. Slower solvent and climate control.

CTP Plate Dot Loss, Ink Rejection, Low Life: 7 Root Causes

05/31/2026

CTP plate dot loss, ink rejection, and low run length traced to 7 root causes: processor over-development, mixed chemistry, wrong calibration curves, fountain pH, physical wear, alkali sensitivity.

Label Printing Scumming: Resin Plate, Ink, and Speed Fixes

05/31/2026

Adhesive label printing scumming on fine text below 8pt: underexposed resin plate with tacky relief base, fast-drying ink. Plate post-treatment, copper-zinc alternative, and retarder fixes.

Stamp Printing Methods: Offset, Gravure, Engraving, and Hybrid

05/31/2026

Five stamp printing methods compared: offset lithography, letterpress, photogravure, hand-engraved intaglio, and engraving-photogravure hybrid. Dot structure and security features.

Benzene-Free Pharma Packaging: Solventless Lamination Guide

05/30/2026

YBB20162012 pharma packaging compliance: benzene-free PU ink systems, solventless lamination for 5 composite structures, white spot and COF control, residual limits.

Paper Wrinkling, Misregistration, Ghosting: Moisture Control Fix

05/30/2026

Tight edges, curling, and wavy edges from paper moisture imbalance cause printing wrinkles, misregistration, and ghosting. Humidity conditioning, paper hanging, and climate balance as prevention.

Registration Drift in Gravure: Electrical, Mechanical, and Process Fixes

05/30/2026

Gravure registration fluctuation traced to three root causes: electrical (PLC, encoder, stepper), mechanical (worn impression cylinder, loose plate), and process (tension, dryer, substrate).

Flexo Process Analysis: Plate, Ink, and Press Setup Guide

05/30/2026

Flexo process analysis for quality printing: solid vs liquid plate selection, 2.84mm plate for fine work, highlight dot limit, ink pH 8.5-9.5, viscosity 20s, fineness, and impression pressure control.