EVA shoes sole usually produce by EVA molded or EVA injection. No matter which process is choosed, there will be a high density surface left. This skin prevent EVA shoes Sole to Glue with other EVA foam sheet or fabric.
We can destroy this skin by using chemical water, but the effect is not so good and this chemical water is poison.
MOR EVA FOAM provide laber service for our customer to remove this skin by Sanding EVA shoes sole manually or by Machine.
Here is a video shows how we sanding the EVA shoes sole.