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What is primarily formed by wrapping the yarn around the needle in warp knitting?
What is primarily formed by wrapping the yarn around the needle in warp knitting?
Which type of bar is used in warp knitting when only underlaps are created?
Which type of bar is used in warp knitting when only underlaps are created?
When overlap and underlap move in the same direction, what type of fabric is formed?
When overlap and underlap move in the same direction, what type of fabric is formed?
What is the term used for the loops created in warp knitting?
What is the term used for the loops created in warp knitting?
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What happens when only underlaps are used in a multi-guide structure?
What happens when only underlaps are used in a multi-guide structure?
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Which stitch is commonly used with other lapping movements in knitting?
Which stitch is commonly used with other lapping movements in knitting?
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In warp knitting, what is created by the combination of overlap and underlap moving in opposite directions?
In warp knitting, what is created by the combination of overlap and underlap moving in opposite directions?
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What is the initial structure of a warp knitted fabric composed of?
What is the initial structure of a warp knitted fabric composed of?
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What is the term for the length of yarn linking together the stitches in warp knitted fabrics?
What is the term for the length of yarn linking together the stitches in warp knitted fabrics?
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Which characteristic is NOT associated with warp knitted fabrics?
Which characteristic is NOT associated with warp knitted fabrics?
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What fabric structure is created when there is a lack of lateral movement in the guide bars for a few courses?
What fabric structure is created when there is a lack of lateral movement in the guide bars for a few courses?
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Which of the following characteristics describes the drapability of warp knitted fabrics?
Which of the following characteristics describes the drapability of warp knitted fabrics?
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What is produced when closed lap formation occurs in the stitching direction?
What is produced when closed lap formation occurs in the stitching direction?
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Which statement accurately describes the versatility of warp knitted fabrics?
Which statement accurately describes the versatility of warp knitted fabrics?
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What effect does the closed lap formation have on the yarns in warp knitted fabrics?
What effect does the closed lap formation have on the yarns in warp knitted fabrics?
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What is the primary role of guide bar movement in the warp knitted fabric structure?
What is the primary role of guide bar movement in the warp knitted fabric structure?
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What defines the process of warp knitting?
What defines the process of warp knitting?
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Which structure is responsible for forming patterns in warp knitted fabrics?
Which structure is responsible for forming patterns in warp knitted fabrics?
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How do the diagonal lines of yarns (underlaps) appear on the back side of warp knitted fabric?
How do the diagonal lines of yarns (underlaps) appear on the back side of warp knitted fabric?
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What characterizes the technical face of warp knitted fabric?
What characterizes the technical face of warp knitted fabric?
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Which feature distinguishes warp knitted fabrics from weft knitted materials?
Which feature distinguishes warp knitted fabrics from weft knitted materials?
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What role do overlaps play in warp knitting?
What role do overlaps play in warp knitting?
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What does the term 'wales' refer to in the context of warp knitting?
What does the term 'wales' refer to in the context of warp knitting?
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Which of the following statements about warp knitting is incorrect?
Which of the following statements about warp knitting is incorrect?
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What is the effect of only utilizing underlaps in a multi-guide warp knitting structure?
What is the effect of only utilizing underlaps in a multi-guide warp knitting structure?
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What defines the structure of a warp knitted fabric?
What defines the structure of a warp knitted fabric?
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When both overlap and underlap are used together, which type of fabric can be created when they move in the same direction?
When both overlap and underlap are used together, which type of fabric can be created when they move in the same direction?
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What happens when overlap and underlap move in opposite directions in warp knitting?
What happens when overlap and underlap move in opposite directions in warp knitting?
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In the context of warp knitting, what is the primary function of overlaps?
In the context of warp knitting, what is the primary function of overlaps?
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What is a common characteristic of the yarn laps referred to in warp knitting?
What is a common characteristic of the yarn laps referred to in warp knitting?
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What type of stitch is known as a pillar stitch in warp knitting?
What type of stitch is known as a pillar stitch in warp knitting?
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How does the shape and direction of guides affect the formation of warp knitted fabrics?
How does the shape and direction of guides affect the formation of warp knitted fabrics?
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What is a key characteristic of the face of warp knitted fabric?
What is a key characteristic of the face of warp knitted fabric?
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How do underlaps contribute to the design possibilities in warp knitting?
How do underlaps contribute to the design possibilities in warp knitting?
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Which statement accurately represents the yarn supply process in warp knitting?
Which statement accurately represents the yarn supply process in warp knitting?
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What distinguishes the back side of warp knitted fabric from its face?
What distinguishes the back side of warp knitted fabric from its face?
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What is the primary function of overlaps in warp knitting?
What is the primary function of overlaps in warp knitting?
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In what way do overlaps and underlaps in warp knitting affect fabric appearance?
In what way do overlaps and underlaps in warp knitting affect fabric appearance?
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What is the significance of recognizing laps in a knitted fabric?
What is the significance of recognizing laps in a knitted fabric?
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What role does the guide bar play in warp knitted fabric formation?
What role does the guide bar play in warp knitted fabric formation?
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What is primarily produced by lateral movement of yarns across the needles in warp knitted fabrics?
What is primarily produced by lateral movement of yarns across the needles in warp knitted fabrics?
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Which of the following correctly describes a characteristic of warp knitted fabrics?
Which of the following correctly describes a characteristic of warp knitted fabrics?
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What structure is formed when there is neither overlap nor underlap in a warp knitted fabric?
What structure is formed when there is neither overlap nor underlap in a warp knitted fabric?
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What is the role of guide bars in the context of warp knitting?
What is the role of guide bars in the context of warp knitting?
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Which statement best explains the concept of closed lap formation in stitching direction?
Which statement best explains the concept of closed lap formation in stitching direction?
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Which of the following is NOT a characteristic of warp knitted fabrics?
Which of the following is NOT a characteristic of warp knitted fabrics?
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What is the effect of using overlapping and underlapping in warp knitting?
What is the effect of using overlapping and underlapping in warp knitting?
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In the context of warp knitting, what does underlapping primarily contribute to?
In the context of warp knitting, what does underlapping primarily contribute to?
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Study Notes
Warp Knitting Basics
- Warp knitting is a stitch-forming process where yarns are supplied parallel to fabric selvedge (wales).
- Every knitting needle has at least one yarn.
- Yarns are deflected laterally between needles to connect stitches.
- Knitted loops are formed by drawing new yarn loops through existing loops.
- Warp knit fabric structure has different appearances on the face and back.
- Face has clearly defined knit stitches, generally vertical, slightly angled.
- Back has diagonal yarn lines (underlaps) that run in a zigzag pattern.
- Underlaps are crucial for pattern effects and easily identify warp knits.
Warp Knitted Fabric Structure
- Figure 14.1 shows warp knit fabric structure (face).
- Figure 14.2 shows warp knit fabric structure (back).
- Figure 14.3 shows overlap and underlap in warp knitted fabric.
- Figure 14.4 illustrates warp knitted fabric formation.
- Overlaps are the yarn portions wrapping around a needle.
- Underlaps are the yarn portions linking stitches in a lateral movement.
Warp Knitted Laps
- Loops are called 'laps' due to yarn wrapping around needles.
- Warp knit structure has two parts: stitch formation (yarn wrapping) & linking stitches (underlap).
- Overlap is where yarn wraps around needle.
- Underlap connects stitches, yarn movement is lateral.
- Different combinations of overlap and underlap influence fabric structure.
Overlap, Underlap, and Fabric Types
- Overlap only: Needle knits a chain of stitches (e.g., pillar stitch).
- Underlap only: Cannot form a fabric, often used alongside other lapping movements.
- Overlap with underlap: Produce open or closed lap fabrics depending on movement direction.
- Fabric can be rigid to elastic.
- Easily adaptable to pattern effects with multiple yarns.
- Resistant to tearing.
- Good air permeability.
- Good crease resistance.
- Excellent dimensional stability and strength.
- Excellent for a variety of design possibilities.
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Description
This quiz covers the fundamental concepts of warp knitting, including the stitch-forming process and the structure of warp knitted fabrics. It highlights the differences in appearance between the face and back of the fabric, as well as the significance of overlaps and underlaps. Test your knowledge on warp knitting techniques and fabric structures.
