The overcoat should have proper elasticity, and the collar of shirt should choose resin collar lining with certain rigidity, mainly with certain toughness. As can be seen from the figure above, the minimum rigidity is 5.4cm at 135 ℃. With the increase of temperature, the rigidity increases correspondingly.

 

Bonding time the bonding effect of interlining and fabric is greatly affected by the time, because the hot melt adhesive flow into the fabric has a certain time process, the peel strength and bonding time. The bonding of two layers of fabric depends on the short time for hot melt adhesive to connect the two layers. The hot melt adhesive is lack of melting and can not infiltrate the fabric very well, so the peel strength is low. However, the long pressing time causes a large amount of hot melt adhesive to infiltrate into the fabric. The pressing time should be selected according to the density and thickness of the fabric.

 

The pressure of bonding, the pressing time and the pressing time of bonding are mainly to eliminate the gap between the two layers of fabric, so that the hot melt adhesive can be squeezed into the fabric by external force. The pressing form of plate press is plane pressing, which makes the hot melt adhesive begin to press from the glass state (solid state) to the viscous flow state. The time of heating and pressing is synchronous, because the pressing time is longer, so the bonding fastness is higher than that of rolling belt press, but it is easy to penetrate;

 

The pressure form of rolling press is linear pressure, which makes the fabric and hot melt adhesive heat at the same time and pass through the oven at the same time. Because at this time, the two layers of unbonded fabric do not fit tightly in the heating, resulting in the interlining hot melt adhesive can not be well bonded to the fabric, so the rolling belt press (except for pre pressing and preheating) is not as firm as the plate press, and the effect on the hard to stick fabric is more obvious.