Common quality defects in wallpaper can significantly impact the final appearance and durability of the product. Here are some key definitions: Color Difference: After installation, if the same batch of wallpaper shows a noticeable difference in color, it can affect the overall aesthetic. This includes left-right color variation on plain-colored wallpapers or front-back color inconsistency in the same roll or box. Leakage Coating: The absence of a PVC layer on the surface exposes the paper base, which can lead to an unattractive finish and reduce the visual appeal of the wallpaper. Missing Printing: When there is no printed pattern on the surface, the PVC layer becomes visible, which can ruin the decorative effect of the wallpaper. Leakage Pressure: If the embossing on the wallpaper is not properly applied, the depth may vary across the surface. This can result in a noticeable contrast when installed, especially between the edges or front and back of the same roll. Stained Line: Any visible stain or mark within 1.5 meters can greatly affect the usability and appearance of the wallpaper. Insufficient Overprinting: If the printed edges are unclear or the overprint deviation exceeds 2mm, it can create an unprofessional look. However, for abstract patterns, a slight deviation might be more acceptable. Trimming Deviation: If the width of the wallpaper does not align with the repeating pattern, it can cause the design to look incomplete or mismatched. Pattern Misalignment: If the edges of the wallpaper cannot be cut properly, the pattern from one roll to the next may not match, resulting in an uneven or broken design. Blasting Explosion Bottom: Severe bursting at the bottom or edges of the wallpaper can cause cracks, which negatively affect its appearance and durability. Pen Marks: Any ink or marking on the surface of the wallpaper is considered a defect, as it can distract from the intended design. White Edge: A visible white border or exposed paper edge after installation creates a stark contrast and detracts from the overall look of the wallpaper. Folding: If the wallpaper has visible creases or folds, it can make the surface look damaged and reduce its decorative value. Twilight: When the color or pattern fades or becomes less visible, it can diminish the decorative effect of the wallpaper, making it appear dull or worn out. Delamination: This occurs when the PVC layer separates from the backing paper, causing the surface to peel or blister, which severely affects both the appearance and performance of the wallpaper. Commercial Plywood,Birch Plywood,Construction Plywood,Waterproof Pp Plastic Plywood RILICO , https://www.rilico.com