Reasons for tape degumming
Whether the first glue reaches a certain affinity with PVC material, whether corona surface material reached second PVC related index, commonly known as "diane".
Because hot melts contain plasticizers and migrate to PVC, they tend to drop in viscosity or even disappear.Four, the surface of the contaminated surface is contaminated with oil or dust, leading to degumming.
Use glue improperly. PVC as the surface material, you can not use hot melt adhesive, the most coating glue
First, the glue is not sticky enough;Two, PVC quality is poor, the plasticizer migrates to glue, destroy glue stickiness.
