On Line Quality Assurance System || Types Of On Line Quality Control System

There are two types of quality assurance system; one is off line quality assurance system and another is off line quality assurance system.

Online Quality Assurance System: Online quality control comprises with the raw material quality control and the process control. On line quality control cosist of –

  • Raw Material Control
  • Process Control

Raw Material Control: As the quality product depends on the raw material quality so we must be provided with the best quality raw material with an economical consideration.

  • The fabric must be without fault, with proper absorbency, whiteness as per requirement of the subsequent process. The Greige inspection report gives the condition of the raw fabric. The information found on a greige report is given below-

Penalty point legends

Code

Hole

H

Oil stain

OS

Chemical stain

CS

Water spot

WS

Fly yarn

FY

Rub mark

R

Dye stain

DS

Dirt stain

D

Rust stain

RS

Yarn contamination

YC

Inspect spot

IS

Grease stain

GS

Missing yarn

MY

Drop stitch

DS

Needle line

NL

Uneven tension

UT

Stripe

S

Thick & thin place

TT

Slubs

Sl

Sinker mark

SM

Birds eye

BE

Wrong design

WD

Pin holes

PH

Barre mark

BM

 

  • The chemical should be of known concentration with a higher degree of purity.
  • The entire machine should be higher precisions.

Process Control: The method chosen for the process must be provided with the necessary accurate parameters. The specific gravity, water level, residual hydrogen per oxide etc. at each stage should checked.

On line quality control is a system which is performed during manufacturing. During this checking, if any faults are found in materials, one should take necessary steps to reduce the fault or to stop the process and take necessary steps to recover it.

So, be careful during quality checking.

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