Drop Stitches are randomly appearing small or big holes of the, same or different size, which appear as defects, in the Knitted fabrics.
What are the eight knitting defects?
High Yarn Tension. Bad Setting of the Yarn Feeders. Old & Worn out Needle set or Breakage of hook or butt in needle. Cylinder Grooves are too tight restricting needle movement.
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Causes:
- Mixing of the yarn lots.
- High Yarn Tension.
- Count Variation.
- Package hardness variation.
What are the defects in garments?
Different types of defects which are found in garments industry and their remedies.
- Seam Puckering. …
- Open seam or broken seam. …
- Broken Stitch. …
- Drop stitch/Skipped stitch. …
- Uncut/ loose thread. …
- Distorted knitting. …
- Seam slippage. …
- Causes:
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What are the knitted fabric fault?
Defects have seen during knitting the fabric:
- Yarn dust, Yarn Dust in the fabric.
- Set-up, Set-up in the fabric.
- Loop mark, Loop Mark in the fabric.
- Needle break, Needle Break in the fabric.
- Oil spot, Oil Spot in the fabric.
- Thick and Thin place, Thick and Thin Place in the fabric.
- Mix yarn or Lot mix, …
- Hole,
What are the common fabric defects?
Here are five common fabric defects and how to prevent them:
- Drop stitches. One of the most common quality issues found in raw textiles, drop stitches are holes or missed stitches that appear randomly in the fabric. …
- Dye marks. …
- Horizontal lines. …
- Shade variation. …
- Stains.
How can you tell the quality of fabric?
How to Check Fabric Quality
- Different Fabrics, Different Standards.
- Fiber Weave. High-quality fabrics feature fibers that are closely and tightly woven together. …
- Color. A good quality fabric should have a dye job to match. …
- Thread Count. This refers to the number of thread strands per inch. …
- Finish. …
- Price. …
- Finished Product. …
- Source.
What are yarn defects?
Yarn faults The defects of yarn is called Yarn faults. When an uneven place or impurities or any other lack of minimum quality is found in a yarn is called yarn defects or faults. … An abnormally thick place or lump in yarn showing less twist at that place. 6. EFFECT More end breaks in the next process.
What are the types of defects?
Following are the common types of defects that occur during development:
- Arithmetic Defects.
- Logical Defects.
- Syntax Defects.
- Multithreading Defects.
- Interface Defects.
- Performance Defects.
How many types of defects are there?
3 Types of defects every importer needs to know. Quality control professionals typically classify quality defects into three main categories: minor, major and critical. The nature and severity of a defect determines in which of the three categories it belongs.
What is defect list?
on completion, issuing with the PCC a defects list detailing major items of work that are still outstanding. after completion, as a tool for monitoring any defects that come to light and are not remedied by the contractor during the contractual defect rectification period.
What are the causes of knitted fabric faults?
Ÿ Presence of dead fibers & other foreign materials, such as; dyed fibers, husk & synthetic fibers etc. Ÿ Dead Fibers appear in the fabric, as a result of the, presence of excessive immature Cotton fibers, in the Cotton fiber crop.
What is crease mark in fabric?
A crease mark is a visible deformation in fabric. A crease mark differs from a crease streak, as it’s unlikely to appear for an entire roll. Rather, it appears in just one spot on the fabric. If final pressing cannot restore fabric to the original condition, a crease mark will be left on the final product.
What are dyeing defects?
Bleeding: loss of colour from a dyed fabric when immersed in a liquid or colour is discharged in to a liquid medium and transfer to another fabric. … A loss of dye of fabric or yarn up on wet treatment. The colour runs when wet and will stain on contact.
How many types of fabric defects are there?
Glossary of Defects
| Defect | Severity |
|---|---|
| Runner | Major or Minor |
| Sanforize Pucker | Major or Minor |
| Scrimp | Major |
| Skewing |
How many defects of fabric are there?
In terms of quality standards, the defects on the fabric surface are categorized into two: surface colour change and local texture irregularity. Further, the defects can be classified as: Yarn Defects. Weaving Defects.
How can we prevent sewing defects?
How to prevent fabric slippage:
- use a thinner thread.
- use a thread with greater tenacity.
- use a smaller needle size.
- try a sharp, long-pointed needle, so it reduces the resistance.
- use a needle plate with a smaller hole.
- reduce the number of stitches per centimeter.