What are the stitching defects?

What is seam defect?

A visual seam defect is a type of defect which you can see outside of a can’s seam. Visual seam defects include cut seam, droop, false seam, incomplete seam, cut-over, sharp seam, and vee. A packager should inspect visual seam defects on a can before starting the packaging process.

How can we prevent sewing defects?

How to prevent fabric slippage:

  1. use a thinner thread.
  2. use a thread with greater tenacity.
  3. use a smaller needle size.
  4. try a sharp, long-pointed needle, so it reduces the resistance.
  5. use a needle plate with a smaller hole.
  6. reduce the number of stitches per centimeter.

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.

What causes seam grin?

Caused by one of the following: 1) Feed Puckering – where the plies of fabric in the seam are not being aligned properly during sewing; 2) Tension Puckering – where the thread has been stretched and sewn into the seam. … To check for Seam Grin, apply normal seam stress across the seam and then remove the stress.

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How do you minimize product defects?

Poor product quality can have costly future consequences for companies, including a direct impact on brand and customer loyalty

  1. Evaluate quality control sampling plans.
  2. Employ a Tightened Inspection Level III sampling plan.
  3. Adopt a zero-defect policy.
  4. Shift focus to quality assurance.


What type of sewing faults are found in fabric?

Some common sewing problems are: Needle thread breakage. Bobbin or looper thread breakage. Thread fusing when the machine stops.

What is staggered stitch?

The stagger stitch reduces the thread build-up along the book spine by alternating the thread position. It is especially useful when sewing thick books printed on thin paper. Besides, for the asterPRO book sewing machine, the switch between normal and staggered stitch is automatically set up via the control panel.

What is a defect life cycle?

Defect life cycle, also known as Bug Life cycle is the journey of a defect cycle, which a defect goes through during its lifetime. It varies from organization to organization and also from project to project as it is governed by the software testing process and also depends upon the tools used.

What is a defect list?

List of Defects means the list of defects and the cost of the remedial works required to remedy such defects set out in Schedule 19 (List of Defects), together with any supplement thereto agreed in writing between the Parties as described in Clause 6.3(a). Save.

What are major defects?

A major defect is a damage or inconsistency in any of the major components of a building. It is likely to render a facility unusable for its intended purpose, and can even cause destruction or collapse of all or some part of the building.

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What factors affect the choice of seam?

Seam strength depends on the thread strength and stitch density. Seam performance of the garment depends on the fabric cover factor, fabric weight, thickness, tensile strength, fabric shrinkage along the fabric length and width, resiliency, bending rigidity, flexural rigidity and shear rigidity [15].

What determines the choice of seam?

A seam is a method of joining two or more pieces of material together by a row stitch. … The type of seam to be used will depend on the type of garment, texture and durability of the fabric.

What are the features needed for a perfect seam formation?

The required characteristics of the seams are discussed below:

  • Seam strength: Seam strength should be equal to or a little bit lower than the strength of the fabric. …
  • Elasticity: …
  • Durability: …
  • Security: …
  • Comfort: