Ink Drying Problems: Causes and Fixes for Print Operators

07/06/2026

I have walked onto a pressroom floor more times than I can count and heard the same frustration: "The ink just will not dry." It does not matter whether you are running offset, gravure, or flexo -- when ink stays wet on the substrate, ev...

Aluminum Foil Overprint Varnish: Formulation & Testing Guide

07/04/2026

In flexible packaging printing, aluminum foil — whether the harder 0.2–0.25 mm variety or the softer 0.07–0.09 mm grade — receives what the industry calls overprint varnish (OP varnish), also known as gloss coating or OP protective agent...

Gravure Inks for Flexible Packaging: Surface, Lamination, Retort

06/23/2026

Gravure printing is the workhorse of flexible plastic packaging 鈥?and picking the right ink makes the difference between a print job that runs smoothly and one that gums up the press. Here's a practical breakdown of the four ink categor...

Patented Flat-Bottom Pouch: Meilijian Anti-Blowout Design

06/22/2026

Some packaging innovations come from a simple observation: stand-up pouches wobble, cartons can't seal, and nobody likes a package that dumps product on the floor. Guangdong Wenhua Packaging Co., Ltd. saw all three problems and built one...

Gravure Water-Based Ink: Adhesion, pH Control, Emulsion Methods

06/20/2026

To solve the quality bottlenecks of gravure-printed water-based inks on film substrates, improvements should be guided by the structural characteristics of gravure printing machines. I. Adhesion to Film Substrates Adhesion problems of w...

Frozen Food Packaging Machinery: Freezing Preservation Technology Trends

06/13/2026

While people still die from hunger, our food waste is staggering. Statistics show that of the 4 billion tons of food produced globally each year, 30% to 50% is wasted — much of it lost during transportation and storage. As living s...

Solventless Lamination for Flexible Packaging: Technology and Trends

06/12/2026

Solventless lamination has advanced from a niche technology to the dominant process for flexible packaging in Europe, Japan, and increasingly in China. The driving forces are unmistakable: zero VOC emissions, no solvent recovery infrastr...

Solventless Retort Adhesives: Performance, Patents, and Market Analysis

06/11/2026

Retort pouches — flexible packages that withstand steam sterilization at temperatures from 121°C to 145°C — rely on the adhesive layer as much as they rely on the barrier films. If the adhesive delaminates during retorting, the entire pa...

Stand-Up Pouch Production: Materials, Sealing, and Defect Solutions

06/10/2026

Stand-up pouches have evolved from a packaging novelty to a structural competitor against traditional plastic bottles and glass jars in the liquid and semi-solid packaging market. Their shelf appeal, material efficiency, and consumer con...