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2.
Semi-Pressure Sensitive Adhesives
Upon requests, we may provide adhesives with different open time and
heat resistant. Below are two major advantages of using semi-PSAs.
1) Adhesive shows very low surface tack, which will not contaminate
shoe upper components. 2) Semi-PSAs cause less problems on needles
during stitching process.
Midsoles
The adhesive must exhibit minimum surface tack after it is roll coated
on the midsole. As a result, the coated midsole can be easily placed
into shoe without sticking to hand or other objects. By a foot mold
pressure or human weight, the midsole is then secured onto innersole.
Boot Reinforcing
Hot melt adhesive is used to reinforce the shank portion of boots.
Immediately after the adhesive is sprayed on the interior part (leather)
of the boot, a piece of fabric is then covered and press bonded with
a vamp molding machine. Through such reinforcing treatment, the shank
area of boot will maintain tough and straight.
Shoe Box and Last
1. Shoe Box
Our hot melt adhesives for shoe box making features long open time,
good adhesion to various materials, and offer great heat resistance.
2. Last and insole attachment
Hot melt adhesive is used to attach last and insole, which can substitute
traditional nailing process. Adhesives feature great heat resistance,
high bonding strength, and can be removed from last easily.
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