Wednesday, December 11, 2019

4 - POINT SYSTEM, A WOVEN FABRIC GRADING SYSTEM


4 - POINT SYSTEM, A WOVEN FABRIC GRADING SYSTEM:


The fabric is woven by using different techniques like handloom, power loom ( shuttle loom), shuttleless loom. Every technology has the probability to get fabric defective. Weaver can reduce the fabric defects up to a maximum extent but he can't avoid the fabric defects occurring during weaving. 

The weaver has full control over fabric defects to be occurring during handloom weaving but handloom fabric doesn't get green of defects. There are pick variations, dense marks, cracks are normally found. 

In power loom and shuttleless loom, there are many mechanical and electronic protections are used to prevent fabric defects. It is also true that there is not any full proof protection system that could reduce the fabric defects up to zero per cent. 

All the above-described reasons make clear that woven fabric has some possible defects. Some of the fabric may be much detective and some fabric may have very few defects. Both fabrics can't be sold at an equal price.

It is also very true that the fabric having minimum defects sells at maximum price, and fabric having maximum defects sells at minimum price. All these reasons necessitate a standard fabric grading system. This grading system helps to decide the actual and correct price of any fabric lot, there are many kinds of grading systems are used in the different regions of the world.

4 - point fabric grading system has worldwide acceptability.  The simplicity of this system makes it more popular among other woven fabric grading systems. This system is easily applicable in fabric manufacturing units. The important information of 4 - points system are given below:

QUANTITY ASSASSINATION FOR INSPECTION:

•  10 % fabric quantity of the whole lot should be inspected.

• If the fabric lot has many colours of the same fabric quality, then the inspected quantity is decided according to the quantity of each shade.

• The fabric rolls having 40 penalty points per 100 square yards or 48 penalty points per 100 square meters are considered as first-grade quality. The fabric rolls containing more penalty points than tolerance limit are graded as second quality fabric. The penalty points per 100 square meters are calculated as below:



DEFECTS CLASSIFICATION IN 4 - POINT SYSTEM:

The defect size and penalty points to be imposed are given in below table:


INDIVIDUAL PIECE INSPECTION SHEET:



FABRIC DEFECTS SUMMARY SHEET OF A PIECE:



FABRIC ROLLS INSPECTION SUMMARY REPORT:



FINAL REPORT OF INSPECTED FABRIC LOT:

Please click on the below video link to watch the full article in Hindi:



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