Fabric Inspection: 4 Point System

Fabric Inspection: 4 Point System

Penalty points are arranged according to size of defects, warp and weft direction length.

 

Length of Defect                                                                                           Penalty Point

 

Up to 3 inch (3 inch or less than 3 inch)                                                                     1

3 inch to 6 inch (6 inch or less than 6 inch but more than 3 inch)                              2

6 inch to 9 inch (9 inch or less than 9 inch but more than 6 inch)                              3

More than 9 inch                                                                                                         4

 

Woven Fabric Hole

1 inch or less than                                                                                                       2

More than 1 inch                                                                                                         4

Open tear                                                                                                                    4

 

Knitted Fabric

Any hole                                                                                                                     4

 

 

ASQC: American Society for Quality Control

 

Result              = Average Penalty Point per Hundred Square Yard

 

Formula           = Total Penalty Points             X  _____100_______  X 36 inch

Length of Fabric Inspected             Fabric Width

 

KTA: Knitted Textile Association of America

 

Result              = Average Penalty Point per Hundred Yard

 

Formula           = Total Penalty Points             X 100

Length of Fabric Inspected

 

Fabric Inspection Machines:

 

McGuckin & Pyle, Inc. USA

Officine Meccaniche Castelli Snc, Italy

 

Examples:

 

Fabric Length Inspected 120 yards and Fabric Width 45 inch

 

Defect Found:

 

Missing Ends/Warp                 à        3, 5, 6, 7, 8 inch

Missing Pick/Weft                  à        2, 3, 1 ½, 10, 11 inch

Slubs                                       à        3, 2, 1, 4, 5, 8, 12 inch

Soiled Yarn                             à        3, 2, 1 ½, 6, 7, 11, 13

 

Roll 1                                                  Length 120 Yards                             Width 45 inch

 

Defects

1

2

3

4

Missing Ends/Warp

|

||

||

0

Missing Pick/Weft

|||

0

0

||

Slubs

|||

||

|

|

Soiled Yarn

|||

|

|

||

Total Defects

10

5

4

5

Penalty Points

10+

10+

12+

20

 

Total Penalty Points/Marks = 10 + 10 + 12 + 20 = 52

 

Calculation as per Formula:

 

ASQC: = Total Penalty  Points                       X   _____100_______              X 36 inch

Length of Fabric Inspected                                Fabric Width

 

= 52/120 x 100/45 x 36

 

= 34.666 point/100 square yards (Average Penalty Point per Hundred Square Yard)

 

Result: Accepted/First Quality.

 

KTA:   = Total Penalty Points             X 100

Length of Fabric Inspected

 

= 52/120 X 100

 

= 5200/120

 

= 43.333/100 yards (Average Penalty Point per Hundred Yard)

 

Result: Not Accepted/Rejected/2nd Quality.

Fabric Inspection: 4 Point System

Penalty points are arranged according to size of defects, warp and weft direction length.

 

Length of Defect                                                                                           Penalty Point

 

Up to 3 inch (3 inch or less than 3 inch)                                                                     1

3 inch to 6 inch (6 inch or less than 6 inch but more than 3 inch)                              2

6 inch to 9 inch (9 inch or less than 9 inch but more than 6 inch)                              3

More than 9 inch                                                                                                         4

 

Woven Fabric Hole

1 inch or less than                                                                                                       2

More than 1 inch                                                                                                         4

Open tear                                                                                                                    4

 

Knitted Fabric

Any hole                                                                                                                     4

 

 

ASQC: American Society for Quality Control

 

Result              = Average Penalty Point per Hundred Square Yard

 

Formula           = Total Penalty Points             X  _____100_______  X 36 inch

Length of Fabric Inspected             Fabric Width

 

KTA: Knitted Textile Association of America

 

Result              = Average Penalty Point per Hundred Yard

 

Formula           = Total Penalty Points             X 100

Length of Fabric Inspected

 

Fabric Inspection Machines:

 

McGuckin & Pyle, Inc. USA

Officine Meccaniche Castelli Snc, Italy

 

Examples:

 

Fabric Length Inspected 120 yards and Fabric Width 45 inch

 

Defect Found:

 

Missing Ends/Warp                 à        3, 5, 6, 7, 8 inch

Missing Pick/Weft                  à        2, 3, 1 ½, 10, 11 inch

Slubs                                       à        3, 2, 1, 4, 5, 8, 12 inch

Soiled Yarn                             à        3, 2, 1 ½, 6, 7, 11, 13

 

Roll 1                                                  Length 120 Yards                             Width 45 inch

 

Defects

1

2

3

4

Missing Ends/Warp

|

||

||

0

Missing Pick/Weft

|||

0

0

||

Slubs

|||

||

|

|

Soiled Yarn

|||

|

|

||

Total Defects

10

5

4

5

Penalty Points

10+

10+

12+

20

 

Total Penalty Points/Marks = 10 + 10 + 12 + 20 = 52

 

Calculation as per Formula:

 

ASQC: = Total Penalty  Points                       X   _____100_______              X 36 inch

Length of Fabric Inspected                                Fabric Width

 

= 52/120 x 100/45 x 36

 

= 34.666 point/100 square yards (Average Penalty Point per Hundred Square Yard)

 

Result: Accepted/First Quality.

 

KTA:   = Total Penalty Points             X 100

Length of Fabric Inspected

 

= 52/120 X 100

 

= 5200/120

 

= 43.333/100 yards (Average Penalty Point per Hundred Yard)

 

Result: Not Accepted/Rejected/2nd Quality.

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