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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