FUSIBLE INTERLINING APPLICATIONS AND GENERAL SUGGESTIONS

During the application, the coat on the fusible interlining is liquidized by using heat, and transfer of this liquid onto the cloth at necessary amount, is established by the pressure. At the end of this process, by the cooling and the solidification of the coat, perfect fusing of the cloth and the fusible interlining is established.

In the application of fusible interlining adhesion, the safest way is to use a press machine. The quality and the well-kept state of the press is one of the most important factors that directly affect the final quality of the shirt. Although the type of fusible interlining may differ with regard to the cloth quality to be applied, there are some general criteria about the usage of the presses. Press temperature should be around,

**0 degrees Celsius for fusible interlining products that are **0gr/m2 or below, 
**0 degrees Celsius for fusible interlining products that are between **0gr/m2 and **0gr/m2      
**5 degrees Celsius for fusible interlining products that are **0gr/m2 or above.

To control the suggested temperature, temperature measuring papers should be used; those heat sensitive papers should be placed between the cloth and the fusible interlining while they are going into the press. Temperature is measured by the darkening rate of the heat indicators on the paper. If this process is applied to the right and left wings of the press at the same time, it allows observing whether heat differences occur between wings, or not.

PROPERTIES OF PRESS
 

To keep the quality at standards, the maintenance of the press should be made regularly and on time.

It should be used in an environment, which is isolated from the flow of yarn and fibre, and humidity.

It should have the structure and properties that are matching with the purpose.

The heat and pressure values should be homogenous on the surface of the press blanket.

The similarity of the parameter indicators ( pressure and heat ) and actual indicators should be checked frequently, in case of mismatching occasions, the maintenance should be informed for the necessary fixing.

The parameter indicators should be sensitive enough. Some analogue indicators might have temperature reading tolerances between ***5 C. In such cases; the thermometer might close the circuit at **5 degrees Celsius, whereas it ought to do so at **0 degrees Celsius, and may mislead the operator.

There should not be any corrosion allowed on the press cylinders, and the cylindrical pressure should be equally balanced on left, right and middle parts.

The cylinders should be checked frequently, the silicone covered cylinders must be changed regularly and the hardness of the silicone should be controlled continuously.

The operators should be experienced.

For the presses operating with single personnel; as the blankets may erode unequally, the personnel should work in rotation.

Products that come out of the press should not be handled before they are cooled, and in case of necessity for handling hot, appropriate care should be given. Otherwise, finger marks and loosen strength occurs at the points of contact.  

There should not be any deep scratches or patches on the blanket surface. If there are patches, care must be given to make the fusing of cloth and fusible interlining apart from this patchy area.

BASIC SUGGESTIONS ABOUT THE PRESSES  

Internal temperature of the press must frequently be controlled through electronic thermometer or temperature measuring papers.

In the mornings, ( especially in winter ) when the presses are first started, overall temperature in the press may remain below the optimum level even though thermometer, being fed by the resistance, indicates the right temperature. In such case, differences may occur between applications in the early mornings and afterwards. This is an important aspect that must be paid attention in terms of the quality of the product. In order to avoid this problem, no fusing should be done, for at least *0 minutes after the press is started.  

OBSERVING THE INTERNAL PRESSURE AND HEAT HOMOGENITY OF PRESS

 
Compress the cloth and the fusible interlining, cut in 5 cm stripes, simultaneously, to be fused at the left, right and middle parts of the press and check if any differences occur in their dismantlement strengths. The dismantlement strength should be minimum 1.2 Kg. 

Compress the shirt collar, in parellel to blanket’s flowing direction. Check the dismantlement strength. If there is strength difference between the sides, compress once more while turning the left and right sides upside down. In this case, if the strength difference disappears, it means that the problem is in press cylinders, have it checked immediately.

You could also do this control, when the press is cold, by using white A4 size standard papers and an unused carbon paper. Place the unused A4 size carbon paper between 2 white A4 size papers. Compress the papers from the left, right and middle at the same time. Observe the darkening ratio of the white papers by the carbon paper and see whether its marks are different at the left, right and middle parts, or not.