testing methods for edge banding strips

Visually inspect whether the edge banding strip matches the color and texture of the board material, or whether it matches the designer's requirements.

Check if the surface of the edge banding strip is smooth and flat, and free of impurities. Impurities or fine pinhole-like marks may indicate it's made from recycled PVC. Check if the back of the edge banding strip is flat. Use a flat blade to hold the edge banding strip horizontally and see if it forms a straight line. If it's not straight, thick glue lines will appear on both sides after edge banding. If the back of the edge banding strip is flat, but thick glue lines still appear after edge banding, check the following: Check if the sawn surface of the board is flat. If the upper and lower saw blades are of different sizes, small steps will appear on the sawn surface, affecting the edge banding. Check if the hot melt adhesive is applied too thickly. Check if the thickness and pressure of the edge banding machine are adjusted correctly. Use a small section of edge banding strip to apply the edge banding, then tear it off forcefully to check if the adhesion strength between the edge banding strip and the hot melt adhesive is reasonable and uniform.

After trimming, check if the sides of the board are uniform. If jagged edges appear, the following may be the causes: the trimming knife is too dull; the edge banding strip is too hard; or the edge banding strip contains too much calcium carbonate. Scratch the edge banding strip with your fingernail or other tool; if it breaks, the surface abrasion resistance and hardness of the edge banding strip do not meet the standards, indicating that the edge banding strip is substandard.