The seam of the collar interlining is indeed prone to breakage, especially when worn, cleaned, or ironed frequently. Due to the high activity frequency of the collar in clothing, repeated bending, friction, and pulling can bring additional stress to the stitching, which may lead to loose stitches or tearing of the fabric over time. Some collar interlinings made of stiff materials or special techniques lack elasticity when bent, and the seams are more prone to breakage due to concentrated tension. If the stitching process is poor, such as excessive needle spacing, poor suture quality, or no use of reinforced stitches, the risk of damage will be greater. During the cleaning process, if too strong a washing program is used or if the clothes are not flipped over or placed in a laundry bag, it may also accelerate the wear and tear of the seams. In daily care, attention should be paid to checking whether the collar interlining is firm. If loose threads or small cracks are found, they should be repaired in a timely manner. At the same time, gentle treatment should be taken during cleaning and ironing to extend its service life and maintain the overall appearance of the clothing.