# How to Obtain Dimensional Stability in Foil Print

## Dimensional Stability in Foil Print

How to Obtain Dimensional Stability in Foil Print While Keeping the Desired Shade Within an Optimal Process for Compact Jersey fabrics.

### Solution Analysis

 Problems Resource R. Feasibility Significance Time-Saving Total Priority Fabric Structure 1 1 9 1 12 8th Chemical characteristics 2 2 8 2 14 6th (2) Cross-linking agent 2 2 8 2 14 6th (1) Improper roller passing 5 5 7 2 19 4th Improper temperature 8 8 9 3 28 1st Improper padding pressure 7 8 9 3 27 2nd Relative Humidity 2 3 6 1 12 8th Absenteeism 3 5 4 1 13 7th (1) Unskilled worker 2 2 6 3 13 7th (2) Blower pressure 2 3 4 1 10 9th Machine tension 1 1 5 2 9 10th Use of steam 4 3 8 1 16 5th Speed variation 5 5 9 4 24 3rd (2) Improper fabric feeding 7 7 9 1 24 3rd (1) Unconsciousness 7 1 3 1 12 8th (3)

### 5W-1H Analysis (Reason 1)

 Question Improper Temperature Where does it happen? In  Finishing Why it is a problem? Affects foil shade What to do? Find out an optimal temperature Who will do? QCC team When will do? Within 1 month How much it will cost? Moderate cost

#### Developing Solutions for Reason 1: Improper Temperature

 S/L Solution suggested Analysis Remarks 1 a) Dryer + Compacting above 100ºC b) Stenter above 100ºC Shade not ok Not accepted 2 Dryer below 100ºC Shade ok, but dimension fails in lengthwise & diameter short Not accepted 3 Compacting Shade not ok Not accepted 4 Stenter below 100ºC a) Shade ok but dimension varies with pressure b) Shade & dimension ok; but, requires 5-6% excess process loss due to GSM problem Need more analysis 5 Tumble Dry Shade & dimension ok; but, requires 5-6% excess process loss due to GSM problem Need more analysis

### 5W-1H Analysis (Reason 2)

 Question Improper padding pressure Where is happens? In Stenter machine Why it is a problem? Affects foil What to do? Find out an optimal pressure & avoid maximum pressure Who will do? QCC team When will do? Within 1 month How much it will cost? Moderate cost

#### Developing Solutions for Reason 2: Improper Padding Pressure

 Solution suggested Analysis Remarks Stenter below 100ºC with double padder Affects foil for high pressure & causes lengthwise extension resulting dimension failure Not accepted Stenter below 100ºC with single padder (maintaining low pressure) Shade & dimension ok Accepted

### Foreseeing Resistance

 Resistance Analysis & Solution Dimensional stability is changed after foil print due to Delamination Control GSM, Shrinkage & Water Absorbency before printing (semi-finished while gumming & cutting) If finished before printing, absorbency may be reduced at finishing Used Hydrophilic Softener This technique is not applicable to loose knitted fabrics We will work on this in our next project

### Result Analysis

Order Number: GISGM1419
Fabrication: 100% Cotton, Interlock, Diameter- 62’’, GSM-180
Order Volume: 3,130 KG
Fabric Delivered: 2912 KG

 S/L Parameter (after finishing) Tumble-dry New Process 1 Processed quantity 1490 kg 1422 kg 2 Diameter 57~59’’ 60~62’’ 3 GSM 188~192 175~182 4 Consumption 6.8% more No excess required

The final result achieved from our project

 Dimensional Stability Buyer requirement Fabric save 0.068 Foil Save 0.074

Written By
Sharmin Akther Diba
Industrial & Production Engineer
Rajshahi University of Engineering & Technology
Email: [email protected]