Two Suggestions About Hot Melt Glue For Edge Banding
1. The temperature during edge sealing
Since the performance of hot melt glue for edge banding is affected by temperature, temperature is a very important indicator in the process of edge banding. The temperature of the hot melt adhesive, the temperature of the substrate, the temperature of the edge-sealing material and the temperature of the working environment are all very important edge-sealing parameters. In the automatic edge banding machine, because the glue is applied to the substrate, the substrate with too low temperature will cure the hot melt adhesive in advance, which will cause the glue to stick to the substrate, but the edge sealing material will not stick firmly. It is best to keep it above 20°C.
The working environment temperature of the edge banding machine will affect the curing speed of the glue.
Factories often have edge banding problems in low-temperature seasons. The reason is that the curing speed of hot melt glue for edge banding at low temperatures increases and the effective bonding time is shortened. If the feeding speed of the edge banding machine cannot be changed (in most cases), the plate and edge banding material must be preheated to ensure the edge banding quality.
2. Treatment of edge banding glue line
After edge sealing, the glue line between the board and the edge band will adversely affect the appearance of the panel furniture. If the amount of glue is too large, the glue line will be obvious. On the contrary, it will reduce the edge banding strength.
For the discontinuous or uneven glue line phenomenon, the reasons are many, and the following factors should be considered comprehensively:
The cutting accuracy of the plate, the edge of the plate must be kept at a 90° angle with its plane,Whether the pressure of the pressure roller of the edge banding machine is evenly distributed and the size is appropriate, and the pressure direction should be at a 90° angle to the edge of the sheet.
Whether the glue roller is intact, whether the hot melt glue is even on it, whether the amount of glue is appropriate,Keep the sealed panels in a clean and less dusty place as much as possible. During the finishing process, avoid dirty things from contacting the glue line.