Elastic Core & Covering Structure
- Spandex Core Configuration
The Spandex core provides the elastic component of the covered yarn, with core denier selected according to the required yarn specification and compression sock construction.
- Nylon or Polyester Covering
Nylon or polyester filaments wrap around the elastic core to form the outer yarn layer. The covering material influences surface characteristics, abrasion resistance and yarn handling during knitting.
- Single & Double Covering
Single-covered yarn uses one covering layer, while double-covered yarn applies two layers around the elastic core. The appropriate construction depends on the required yarn characteristics and knitting process.
Elastic Tension & Yarn Extension
Yarn Extension Range
The extension range of covered yarn depends on the Spandex denier, covering construction and applied load. Selecting an appropriate specification helps meet the elongation requirements of compression hosiery production.
01
Feeding Tension Consistency
Stable feeding tension helps maintain consistent yarn delivery during sock knitting. Tension settings should be adjusted according to the yarn specification, machine speed and knitting conditions.
02
Elastic Recovery After Stretching
The Spandex core retracts after the applied tension is released, contributing to the recovery behavior of the knitted fabric. Actual recovery performance depends on the elastic core and the overall yarn construction.
03
Influence on Compression Fabric
Yarn extension and recovery affect how the knitted fabric responds to stretching during wear. The final compression level is determined by the combined effects of yarn properties, stitch density, sock dimensions and finishing conditions.
04
Covered Yarn Customization
- Custom Yarn Specifications
KJS can discuss covered yarn configurations based on the requirements of compression hosiery manufacturers. Core denier, covering material, single or double covering, and twist direction can be specified according to the intended knitting process.
- Application-Based Selection
Yarn selection can be evaluated against sock type, knitting machine gauge, target fabric density and required stretch characteristics to establish a suitable specification for production.
- Sample Evaluation & Bulk Orders
Customers can provide existing yarn specifications or sample references for evaluation before confirming an order. Once the specification is approved, it can serve as the reference for repeat production and bulk supply.
FAQ
How do I choose between nylon-covered and polyester-covered yarn?
Consider the required fabric surface, abrasion resistance, dyeing process and compatibility with other yarns in the sock construction. The final choice should be based on the intended application and production trials.
Can covered yarn be used with different types of sock knitting machines?
Compatibility depends on the machine gauge, yarn feeding system and the required sock construction. Buyers should confirm the yarn specification against their equipment before placing a bulk order.
What information should I provide when requesting a quotation?
Provide the required core material and denier, covering filament type, yarn construction, estimated order quantity and intended sock application. An existing yarn specification or sample can also help clarify the requirements.
Can I request a sample before confirming a production order?
Yes. Sample availability can be discussed according to the required yarn specification. Testing the sample in the intended knitting process helps buyers evaluate its suitability before bulk purchasing.
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