Knowledge That Supports Better Yarn Decisions
FENGDA shares practical knowledge covering yarn specifications, structures, coloration, performance, applications and manufacturing to help customers understand requirements and make better yarn decisions.
What Would You Like to Know About Yarn?
Search yarn specifications, structures, coloration, performance, applications or manufacturing topics.
What does 70D/24F/2 mean?What is textured yarn?What is air covered yarn (ACY)?Hank dyed vs. dope dyed yarn?What is the difference between stretch and recovery?
Build Your Understanding of Yarn
Explore practical topics that connect yarn terminology with purchasing, application and manufacturing decisions.
Yarn Fundamentals
Counts, denier, filament notation and the terms used to describe yarn.
Yarn Types & Structures
Textured, covered, twisted and other yarn construction principles.
Manufacturing
How preparation, coloration, winding and inspection affect finished yarn.
How Do You Read a Yarn Specification?
Yarn specifications combine several pieces of information into a compact technical notation.
70D / 24F / 2
70D indicates nominal linear density. 24F indicates the number of filaments. /2 commonly indicates two plies or ends combined. Notation can vary, so the complete construction should always be confirmed with the supplier.
Questions Yarn Buyers Often Ask
Practical answers to common questions raised during yarn selection and development.
What determines yarn softness?
Material, filament construction, texturing, twist, coloration and finishing can all affect hand feel.
Why can yarn color vary between batches?
Raw material, dyeing conditions, process control and approved color standards all influence batch consistency.
What affects stretch and recovery?
Material elasticity, yarn construction and the finished fabric structure work together to determine performance.
When should recycled yarn be considered?
Start with the required recycled content, certification expectations, performance target and application constraints.
Why does yarn break during knitting?
Strength, elongation, package quality, tension, machine settings and yarn compatibility should be reviewed together.
New to Yarn? Start Here.
Move from basic terminology to a development-ready understanding of your requirement.
Learn the Language
Understand count, denier, filament and ply notation.
Compare Structures
See how texturing, twisting and covering change yarn behavior.
Connect Performance
Relate stretch, recovery, color and durability to the application.
Prepare a Brief
Turn what you know into a structured requirement for technical review.
Understand the Requirement. Then Build the Yarn.
Use what you know about the application and performance target to prepare a structured yarn development brief.