Author Archives: Vichem
What is UV Ink? Advantages and Applications
In modern printing, UV ink has emerged as an advanced technology solution. Thanks to its photochemical curing process under ultraviolet light, the ink dries instantly without solvent evaporation. This feature not only boosts productivity but...
Read moreTextile Dyeing Flow & Key Notes
In the textile industry, industrial fabric dyeing plays a decisive role in product value and quality. A proper process ensures durable and even colors across the surface. Without control, fabrics may fade quickly or show...
Read moreTBN Alkalinity in Lubricants: Meaning and Control
TBN alkalinity is one of the most critical parameters when evaluating lubricant quality. It measures the ability to neutralize acids formed during engine operation and lubrication. A proper index helps protect metal surfaces, reduce corrosion,...
Read moreSedimentation in Water-Based Paint: Causes and Solutions
In the coatings industry, product quality is always tied to system stability. Yet many paint batches develop sedimentation during storage or even after application. This defect reduces re-dispersibility, making the surface uneven and prone to...
Read moreHow pH and Temperature Affect Dye Unevenness
Dye unvenness is a common defect in textile finishing, creating fabric surfaces with inconsistent shades, streaks, or blotches. Fabrics such as denim, cotton, and synthetic fibers are highly prone to this issue. The root cause...
Read moreStreaky marks on denim – Causes and solutions
In the denim dyeing industry, fabric surface quality is always a decisive factor. One of the most common and difficult-to-handle defects is streaky marks. These irregular patterns create blotches, disrupting the uniform beauty of denim....
Read moreShear Strength and Peel Strength – Key Performance Indicators of Adhesives
In modern manufacturing, adhesives are increasingly at the center of production. They replace many mechanical methods such as nails, bolts, or welding. Their advantages lie in forming lightweight, neat bonds while distributing stress evenly. Adhesives...
Read moreKey Heat Resistance Indices of Plastics
In the plastics industry, heat resistance indices are critical factors that determine product quality. When exposed to heat, plastics may soften, deform, or lose mechanical strength. Without proper control, this affects both performance and service...
Read moreWhat is melt fracture in plastic extrusion? Causes and solutions
Plastic extrusion is a core technology in the production of films, sheets, pipes, and fibers. This process enables continuous shaping, high productivity, and stable quality. However, in reality, the surface of products does not always...
Read moreOTR & WVTR – Key Barrier Indices in Plastic Packaging
Plastic packaging not only protects products from impact but also maintains stable quality during storage. Oxygen and moisture are two factors that directly affect product shelf life and flavor. To control them, the packaging industry...
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