Feature and properties of two guide bar warp knit designs
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The document discusses two guide bar warp knit designs, highlighting features and properties that affect their performance, such as yarn type and fabric structure. It describes various fabric types including two bar tricot, locknit, satin, reverse locknit, and sharkskin, emphasizing their distinct characteristics and applications. Additionally, it notes the stability of queen's cord compared to woven fabrics due to its unique stitch arrangement.
Feature and properties of two guide bar warp knit designs
- 1. Two guide bar warp knit designs with feature and properties Presented by , Md: Fahimuzzaman TE-14025 Department of textile Engineering. Mawlana Bhashani Science and Technology University
- 2. Contents Factors that can affect the properties of warp knit fabrics Features of two guide bar warp knit design Two bar tricot fabric Locknit fabric Satin fabric Reverse locknit and sharkskin Queen’s cord
- 3. Factors affect warp knit fabric properties Yarn type Finishing Fabric Structure
- 4. Features of two guide bar warp knit design Good Dimensional stability, reasonable cover Better loop shape and ladder resistance Reasonable weight Better pattern scope
- 5. Two bar tricot fabric This structure is actually knitting two “half tricot” together with two bars moving in opposite direction. This is a balanced structure, the two set of warp yarns are doing their overlap in opposite direction. This result in perfect upright loops in the fabric surface.
- 6. Locknit fabric Most two guide bar structures are not balanced. Although all structures have their overlap and underlaps in the opposite direction, but the underlap displacements of the two bars are different. The FGB makes a longer undrlap than BGB, and the result is the fabric will give lower sideway elasticity than tricot.
- 7. Satin fabric Satin is a locknit base structure. It contains even longer underlap in the FGB. The excessive length of underlap at the back of the fabric will give very good light reflection when the FGB yarns are flat acetate. E.g FGB= 3-4/1-0// and BGB=1-0/1-2//
- 8. Reverse locknit and sharkskin They are very similar to locknit. The only difference is the swapping of the chain notations between FGB and BGB. - Reverse locknit: FGB=1-0/1-2; BGB=2- 3/1-0 - Sharkskin : FGB=1-0/1-2; BGB=4-5/1-0 The reverse locknit and locknit fabrics if knitted under the same condition show different appearance and properties. The reverse locknit is more rigid fabric because the BGB long underlaps are trapped by the shorter FGB underlap.
- 9. Reverse locknit and sharkskin FGB: 1-0/1-2 FGB: 1-0/1-2 BGB:2-3/1-0 BGB: 4-5/1-0
- 10. Queen’s cord Queen’s cord is a very stable structure. The pillar stitches act as warp yarns and the long underlaps act as weft yarns in the fabric. Therefore, its dimensional stability should be near to the woven fabrics.