The use of sealing hot melt glue

1, the temperature at the time of sealing
The heat melt of the sealing edge is affected by the temperature, so the temperature is a very important index in the sealing process. The temperature of hot melt glue, substrate temperature, material temperature and working environment(workshop of sealing machine) are very important sealing parameters. In the automatic sealing machine, due to the adhesive coating on the substrate, the base material with too low temperature will allow the hot melt adhesive to solidify in advance, resulting in the adhesive can be glued to the substrate, but it can not adhere to the sealing material. The temperature of the substrate is best kept above 20 °C. The working environment temperature of the sealing machine will affect the curing speed of the adhesive. Factory often in the season of low temperature will appear the problem of sealing edge, the reason is that the heat melt glue curing speed at low temperature speed, the effective time of bonding shortened. If the feed speed of the sealing machine can not be changed(in most cases), it is necessary to Preheat the plate and the sealing material to ensure the quality of the sealing edge.

2, the processing of edge adhesive wire
The adhesive line between the sealing plate and the sealing band will have an adverse effect on the appearance of the plate furniture. The amount of coating is too large, it will make the adhesive line obvious, and conversely, it will reduce the edge strength. For the non-continuous or uneven rubber line phenomenon, the reasons for this are manifold. The following factors should be considered comprehensively: the material opening accuracy of the plate, the edge of the plate must be maintained at an angle of 90 ° with its plane; Whether the pressure of the sealing machine roller is evenly distributed and suitable in size, the pressure direction should be 90 ° angle with the plate edge; Whether the coating roller is intact, whether the heat melt glue is uniform on it, whether the amount of coating is appropriate; Seal the edge of the plate as far as possible to keep in a cleaner, less dust, in the finishing process, to avoid dirty things and glue wire contact.